Rotary switch arranged in double rows

Abstract

The utility model relates to a rotary switch arranged in double rows, which comprises a free tripping structure and a switch assembly, the switch assembly comprises a switch shell and a plurality of switch units arranged in the switch shell, and the plurality of switch units are divided into two groups. The free tripping structure and the transmission structure between the switch assemblies which are arranged in double rows are improved, so that the free tripping structure is improved, and the transmission structure of the free tripping structure and the transmission structure between the switch assemblies which are arranged in double rows is improved. An original driven gear driving one row is changed into a driving gear directly matched with a free tripping structure at the same time, the driven gear of the other row is still used as a driven gear and rotates synchronously with the driving gear, transmission from the mechanism to a moving contact is 1: 1, torque cannot be lost, the opening degree of the moving contact can be set to be larger, and safety is improved.

Description

Technical Field

[0001] The utility model relates to a rotary switch arranged in double rows. Background Art

[0002] The patent CN202321287166.7 previously disclosed by the applicant discloses a double-row rotary switch, including a switch assembly, wherein the switch assembly includes a plurality of switch units, wherein the switch units include a unit housing and a moving contact and a static contact arranged in the unit housing; the plurality of switch units are divided into two rows and the rotation center axes of the two rows of switch units are arranged in parallel, and the third transmission gear having two internal gear parts drives the first transmission gear and the second transmission gear to realize the synchronous opening and closing of the two rows of switch units, thereby reducing the length of each row of switch units along the first direction A, reducing the risk of breakage during transportation, and reducing the torque transmission length of each row of switch units along the first direction A, improving the transmission efficiency and synchronization of the torque during opening and closing, and effectively increasing the upper limit of the number of switch units. The above structure drives the two rows of switch units by driving the first transmission gear and the second transmission gear through a third transmission gear having two internal gear parts, and there is a problem of certain loss of transmission torque. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a rotary switch with a double row arrangement.

[0004] The technical solution adopted by the utility model is as follows: a double-row rotary switch, comprising a free tripping structure and a switch assembly, wherein the switch assembly comprises a switch housing and a plurality of switch units arranged in the switch housing, wherein the switch unit comprises a moving contact and a stationary contact, wherein the moving contact is rotatable relative to the switch housing, and the stationary contact is fixed relative to the switch housing; the second rotation center axis of the moving contact is arranged along a second direction B;

[0005] The free tripping structure includes a connecting rod structure, and the connecting rod structure includes an arc motion output end;

[0006] The plurality of switch units are divided into two groups, forming a first switch unit group consisting of at least one switch unit and a second switch unit group consisting of at least one switch unit, wherein the second rotation center axes of the movable contacts of the first switch unit group are all located on the same axis, the second rotation center axes of the movable contacts of the second switch unit group are all located on the same axis, and the rotation center axis of the first switch unit group is arranged in parallel with the second rotation center axis of the second switch unit group;

[0007] The second rotation center axis of the moving contact of the first switch unit group is coaxial and circumferentially linked with a driving gear, and the second rotation center axis of the moving contact of the second switch unit group is coaxial and circumferentially linked with a first driven gear;

[0008] The driving gear is connected to the arc motion output end so that the driving gear forms a rotational motion under the arc motion of the arc motion output end;

[0009] The driving gear and the first driven gear are matched to each other so that the two rotate synchronously.

[0010] The driving gear and the first passive gear have the same outer diameter and number of teeth; the driving gear and the first passive gear are matched through at least one second passive gear so that the two rotate synchronously.

[0011] The outer wall of the switch housing is connected with a cover plate, and the driving gear, the first driven gear and the second driven gear are located between the cover plate and the outer wall of the switch housing.

[0012] The outer wall of the switch housing is provided with a transmission limiting cavity which is adapted to the shape of the driving gear, the first driven gear and the second driven gear which form a transmission match, and the driving gear, the first driven gear and the second driven gear are arranged in the transmission limiting cavity.

[0013] The driving gear and the first passive gear have the same outer diameter and number of teeth; the driving gear and the first passive gear are matched through at least one first transmission rack so that the two rotate synchronously.

[0014] The outer wall of the switch housing is connected with a cover plate, and the driving gear, the first driven gear, and the first transmission rack are located between the cover plate and the outer wall of the switch housing.

[0015] The first transmission rack is provided with one and is located on one side of the driving gear and the first passive gear, or the first transmission rack is provided with two and is located on both sides of the driving gear and the first passive gear; the outer wall of the switch housing is provided with a transmission limiting cavity that is adapted to the shape of the driving gear, the first passive gear, and the first transmission rack that form a transmission match, the driving gear, the first passive gear, and the first transmission rack are arranged in the transmission limiting cavity, and the inner wall of the transmission limiting cavity is provided with an abutment wall that limits the first transmission rack away from the outer side wall of the driving gear and the first passive gear.

[0016] The cover plate and the outer wall of the switch housing are detachably connected via threaded fasteners.

[0017] It also includes a knob having a first rotation center axis; the first rotation center axis is extended along a first direction, the second rotation center axis is extended along a second direction, and the first direction and the second direction are perpendicular to each other;

[0018] The free tripping structure and the switch assembly are stacked along the second direction, the first switch unit group and the second switch unit group of the switch assembly are stacked along the first direction, and the knob is located on one side of the assembly consisting of the free tripping structure and the switch assembly along the first direction;

[0019] The first passive gear is located between the knob and the active gear.

[0020] The rotation angle of the driving gear and the first driven gear during the opening and closing actions is 95-110°.

[0021] The beneficial effects of the utility model are as follows: the utility model improves the transmission structure between the free tripping structure and the switch assembly arranged in double rows, so that the original passive gear driving one of the rows is changed into an active gear directly matched with the free tripping structure at the same time, and the passive gear of the other row is still used as a passive gear and rotates synchronously with the active gear. The transmission from the mechanism to the moving contact is 1:1, and the torque will not be lost. In addition, the opening of the moving contact can be set larger, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0023] Figure 1 It is a structural schematic diagram of Example 1;

[0024] Figure 2 A schematic diagram of a transmission structure between a free tripping structure and a double-row switch assembly in Example 1;

[0025] Figure 3 is an exploded view of the switch assembly in Example 1;

[0026] Figure 4 It is a structural schematic diagram of the first transmission mechanism part in Example 1;

[0027] Figure 5 A schematic diagram of a transmission structure between a free tripping structure and a double-row switch assembly in Example 2;

[0028] Figure 6 is an exploded view of the switch assembly in Example 2;

[0029] First rotation center axis -100;

[0030] Knob output gear-220; second rack-230;

[0031] Free tripping structure-300; crank arm-310; tripping member-320;

[0032] Driving gear-410; first passive gear-420; second passive gear-430; first transmission rack-440;

[0033] Switch assembly-500; switch housing-510; cover plate-511; transmission limit cavity-512; abutment wall-513;

[0034] Release device-610; first trip push rod-620; second trip push rod-630. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0036] Embodiment 1:

[0037] A double row rotary switch, such as Figure 1 As shown, it includes a knob, a free tripping structure 300, and a switch assembly, wherein the switch assembly includes a switch housing 510 and a plurality of switch units disposed in the switch housing 510.

[0038] The knob has a first rotation center axis 100, and the first rotation center axis is extended along the first direction A. The switch unit includes a moving contact and a stationary contact. The moving contact is rotatable relative to the switch housing 510, and the stationary contact is fixed relative to the switch housing 510. The second rotation center axis of the moving contact is arranged along the second direction B.

[0039] The knob is used to drive the moving contact to close or open the moving contact with the static contact;

[0040] The free tripping structure 300 includes a tripping member 320 and a connecting rod structure with energy storage. The knob drives the moving contact and the static contact to close or open through the connecting rod structure with energy storage; the moving contact and the static contact in the closed state can be opened through the tripping member 320; the connecting rod structure with energy storage includes an arc motion input end and an arc motion output end, a first transmission mechanism is provided between the rotational motion output end and the arc motion input end of the knob, and a second transmission mechanism is connected between the arc motion output end and the rotational motion input end of the switch unit;

[0041] A plurality of switch units are divided into two groups, constituting a first switch unit group consisting of at least one switch unit and a second switch unit group consisting of at least one switch unit, the second rotation center axes of the moving contacts of the first switch unit group are all located on the same axis, the second rotation center axes of the moving contacts of the second switch unit group are all located on the same axis, and the rotation center axis of the first switch unit group is arranged parallel to the second rotation center axis of the second switch unit group.

[0042] like Figure 3 As shown, the second transmission mechanism comprises a driving gear 410 which is coaxial with the second rotation center axis of the moving contact of the first switch unit group and circumferentially linked, and a first driven gear 420 which is coaxially arranged with the second rotation center axis of the moving contact of the second switch unit group and circumferentially linked. The driving gear 410 is connected to the arc motion output end so that the driving gear 410 forms a rotational motion under the arc motion of the arc motion output end; the driving gear 410 and the first driven gear 420 are in transmission cooperation so that the two rotate synchronously.

[0043] By improving the transmission structure between the free tripping structure and the switch assembly arranged in two rows, the original passive gear driving one row is changed into an active gear that directly cooperates with the free tripping structure at the same time, and the passive gear of the other row is still used as a passive gear, which rotates synchronously with the active gear. The transmission from the mechanism to the moving contact is 1:1, and the torque will not be lost. In addition, the opening of the moving contact can be set larger to improve safety. The opening of the moving contact can be greater than 90°. In this embodiment, the rotation angle of the opening and closing action of the active gear 410 and the first passive gear 420 is 95-110°, that is, the opening of the moving contact can be 95-110°.

[0044] Specifically, Figure 2 As shown, the driving gear 410 and the first passive gear 420 have the same outer diameter and number of teeth; the driving gear 410 and the first passive gear 420 are matched with each other through at least one second passive gear 430 so that the two rotate synchronously.

[0045] like Figure 3 As shown, the outer wall of the switch housing 510 is connected with a cover plate 511 , and the driving gear 410 , the first driven gear 420 , and the second driven gear 430 are limited between the cover plate 511 and the outer wall of the switch housing 510 .

[0046] The outer wall of the switch housing 510 is provided with a transmission limiting cavity 512 that matches the shape of the driving gear 410, the first passive gear 420, and the second passive gear 430 that form a transmission match, and the driving gear 410, the first passive gear 420, and the second passive gear 430 are arranged in the transmission limiting cavity 512. This arrangement is convenient for installation. During installation, the switch unit is installed inside the switch housing 510. After assembly, the driving gear 410, the first passive gear 420, and the second passive gear 430 are installed in the transmission limiting cavity 512 outside the switch housing 510, and then the cover plate 511 is connected to keep the driving gear 410, the first passive gear 420, and the second passive gear 430 in the transmission limiting cavity 512 to form a stable transmission relationship.

[0047] The cover plate 511 and the outer wall of the switch housing 510 are detachably connected via threaded fasteners, which facilitates subsequent adjustment and maintenance.

[0048] The connecting rod mechanism of the free tripping structure 300 comprises an arc motion input end and an arc motion output end, and the plane where the arc motion of the arc motion input end and the plane where the arc motion of the arc motion output end are located are both arranged perpendicular to the second direction B;

[0049] The free tripping structure 300, the second transmission mechanism, and the switch assembly are stacked along the second direction B, and the first switch unit group and the second switch unit group of the switch assembly 500 are stacked along the first direction A. The knob is located on one side of the assembly consisting of the free tripping structure 300 and the switch assembly 500 along the first direction A.

[0050] The first passive gear 420 is located between the knob and the active gear 410. The distance between the knob and the active gear 410 is relatively large compared to the distance between the knob and the first passive gear 420. In this way, the space between the arc motion input end and the arc motion output end of the connecting rod mechanism can be larger.

[0051] Specifically, the free tripping structure 300 includes a mechanism bracket, and the connecting rod structure with energy storage is fixed in the mechanism bracket. Specifically, the connecting rod structure with energy storage includes a crank arm 310, an upper connecting rod, a lower connecting rod, an output wheel, a jumper 320, a locking member, and an energy storage spring. The specific structure of the free tripping structure 300 can refer to the patent CN202321287166.7 previously disclosed by the applicant, and will not be specifically described in this embodiment.

[0052] The first rotation center axis 100 of the knob and the arc motion input end of the connecting rod structure are transmitted through the first transmission component, such as Figure 4As shown, the first transmission assembly includes a knob output gear 220 integrally connected to the first rotating center axis 100 of the knob and a rack 230 meshing with the knob output gear 220. The rack 230 can slide along a straight line driven by the knob output gear 220. The upper end of the crank arm 310 is located on the sliding path of the rack 230. When the rack 230 slides along a straight line, the crank arm 310 is driven to rotate, so that the upper end of the crank arm 310 constitutes an arc motion input end.

[0053] At the same time, it also includes a tripper 610, a first tripping push rod 620, and a second tripping push rod 630. The tripper 610 is used to receive a tripping signal. The first tripping push rod 620 and the second tripping push rod 630 are sequentially transmitted and arranged between the tripper 610 and the tripping member 320. When the tripper 610 receives a tripping signal, the tripper 610 is pushed out, and the first tripping push rod 620 and the second tripping push rod 630 are sequentially transmitted to push the tripping member 320 to move the connecting rod structure with energy storage, thereby freely tripping and tripping. The tripping signal can be remote to realize remote rapid tripping control, or it can be a fault current signal to realize automatic tripping after a fault occurs.

[0054] Embodiment 2:

[0055] The structure of this embodiment is roughly the same as that of embodiment 1, and the main differences are: Figure 5 , Figure 6 As shown, the driving gear 410 and the first passive gear 420 have the same outer diameter and number of teeth; the driving gear 410 and the first passive gear 420 are coupled to each other through at least one first transmission rack 440 so that the two rotate synchronously.

[0056] The outer wall of the switch housing 510 is connected with a cover plate 511 , and the driving gear 410 , the first driven gear 420 , and the first transmission rack 440 are located between the cover plate 511 and the outer wall of the switch housing 510 .

[0057] The first transmission rack 440 is provided with one and is located on one side of the driving gear 410 and the first passive gear 420, or the first transmission rack 440 is provided with two and is located on both sides of the driving gear 410 and the first passive gear 420. In this embodiment, Figure 5As shown, two first transmission racks 440 are provided and are located on both sides of the driving gear 410 and the first passive gear 420; the outer wall of the switch housing 510 is provided with a transmission limiting cavity 512 which is adapted to the shape of the driving gear 410, the first passive gear 420 and the first transmission rack 440 that form a transmission match, the driving gear 410, the first passive gear 420 and the first transmission rack 440 are arranged in the transmission limiting cavity 512, and the inner wall of the transmission limiting cavity 512 is provided with an abutment wall 513 which limits the first transmission rack 440 away from the outer side walls of the driving gear 410 and the first passive gear 420.

[0058] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A double-row rotary switch, comprising a free tripping structure (300), a switch assembly, wherein the switch assembly comprises a switch housing (510) and a plurality of switch units arranged in the switch housing (510), The switch unit comprises a moving contact and a stationary contact, wherein the moving contact is rotatable relative to the switch housing (510), and the stationary contact is fixed relative to the switch housing (510); the second rotation center axis of the moving contact is arranged along a second direction (B); The free tripping structure (300) comprises a connecting rod structure, and the connecting rod structure comprises an arc motion output end; The plurality of switch units are divided into two groups, forming a first switch unit group consisting of at least one switch unit and a second switch unit group consisting of at least one switch unit, wherein the second rotation center axes of the movable contacts of the first switch unit group are all located on the same axis, the second rotation center axes of the movable contacts of the second switch unit group are all located on the same axis, and the rotation center axis of the first switch unit group is arranged in parallel with the second rotation center axis of the second switch unit group; Features: A driving gear (410) is coaxially and circumferentially linked to the second rotation center axis of the moving contact of the first switch unit group, and a first driven gear (420) is coaxially and circumferentially linked to the second rotation center axis of the moving contact of the second switch unit group; the driving gear (410) is connected to the arc motion output end so that the driving gear (410) forms a rotational motion under the arc motion of the arc motion output end; The driving gear (410) and the first driven gear (420) are in transmission cooperation so that the two rotate synchronously.

2. The double-row rotary switch according to claim 1, Features: The driving gear (410) and the first passive gear (420) have the same outer diameter and number of teeth; the driving gear (410) and the first passive gear (420) are matched in transmission through at least one second passive gear (430) so that the two rotate synchronously.

3. The double-row rotary switch according to claim 2, Features: The outer wall of the switch housing (510) is connected to a cover plate (511), and the driving gear (410), the first driven gear (420), and the second driven gear (430) are located between the cover plate (511) and the outer wall of the switch housing (510).

4. The double-row rotary switch according to claim 3, Features: The outer wall of the switch housing (510) is provided with a transmission limiting cavity (512) that matches the shape of the driving gear (410), the first driven gear (420), and the second driven gear (430) that form a transmission match, and the driving gear (410), the first driven gear (420), and the second driven gear (430) are arranged in the transmission limiting cavity (512).

5. The double-row rotary switch according to claim 1, Features: The driving gear (410) and the first passive gear (420) have the same outer diameter and number of teeth; the driving gear (410) and the first passive gear (420) are driven and matched via at least one first transmission rack (440) so that the two rotate synchronously.

6. The double-row rotary switch according to claim 5, Features: The outer wall of the switch housing (510) is connected to a cover plate (511), and the driving gear (410), the first driven gear (420), and the first transmission rack (440) are located between the cover plate (511) and the outer wall of the switch housing (510).

7. The double-row rotary switch according to claim 6, Features: The first transmission rack (440) is provided with one and is located on one side of the driving gear (410) and the first passive gear (420), or the first transmission rack (440) is provided with two and is located on both sides of the driving gear (410) and the first passive gear (420); the outer wall of the switch housing (510) is provided with a transmission limiting cavity (512) which is adapted to the shape of the driving gear (410), the first passive gear (420) and the first transmission rack (440) that form a transmission match, the driving gear (410), the first passive gear (420) and the first transmission rack (440) are arranged in the transmission limiting cavity (512), and the inner wall of the transmission limiting cavity (512) is provided with an abutment wall (513) which limits the first transmission rack (440) away from the outer side wall of the driving gear (410) and the first passive gear (420).

8. The double-row rotary switch according to any one of claims 3-4, 6-7, Features: The cover plate (511) and the outer wall of the switch housing (510) are detachably connected via threaded fasteners.

9. The double-row rotary switch according to claim 1, Features: It also includes a knob having a first rotation center axis (100); the first rotation center axis is extended along a first direction (A), the second rotation center axis is extended along a second direction (B), and the first direction (A) and the second direction (B) are perpendicular to each other; The free tripping structure (300) and the switch assembly (500) are stacked along the second direction (B), the first switch unit group and the second switch unit group of the switch assembly (500) are stacked along the first direction (A), and the knob is located on one side of the assembly consisting of the free tripping structure (300) and the switch assembly (500) along the first direction (A); The first passive gear (420) is located between the knob and the active gear (410).

10. The double-row rotary switch according to claim 1, Features: The rotation angle of the driving gear (410) and the first driven gear (420) during the opening and closing actions is 95-110°.

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