Signal output device of three-station mechanism

Abstract

A signal output device of a three-station mechanism comprises a case, a transmission mechanism and a mounting plate are arranged in the case, and the signal output device further comprises travel switches including a first travel switch, a second travel switch and a third travel switch which are arranged in a triangular shape, and the first travel switch and the second travel switch are horizontally arranged on one side of the mounting plate at intervals; the triggering piece is arranged above the mounting plate in a sliding manner, linearly reciprocates under the driving of the transmission mechanism and triggers the travel switch, and is provided with a pressing part which is used for pressing a roller of the travel switch and comprises a first pressing part and a second pressing part which are arranged on one side of the triggering piece at an interval, and a third pressing part arranged on the opposite side of the triggering piece; and the distance d1 between the first pressing part and the first travel switch, the distance d2 between the second pressing part and the second travel switch, and the distance d3 between the third pressing part and the third travel switch are gradually increased. The opening and closing in-place signal output delay is determined, the in-place condition of the travel switch is fully judged, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric equipment operating mechanisms, in particular to a three-station mechanism signal output device. Background Art

[0002] The three-position mechanism is a commonly used electrical switch device with a wide range of applications. Its main structure is to change the switch state of the travel switch through a transmission mechanism, output a position signal, and realize the function of one-button sequential control. Document No. CN 216435701 U discloses an improved three-position mechanism one-button sequential control device. However, the existing three-position mechanism cannot fully judge the position of the output of the opening and closing signal during use. There is a situation where the opening and closing are not in place, resulting in discharge of the circuit breaker, arc generation, leakage, and even explosion in severe cases. In order to fully judge the output of the opening and closing signal of the mechanism and meet the standards and installation requirements of foreign projects, we have developed this three-position mechanism signal output device. Utility Model Content

[0003] In view of the problems and shortcomings existing in the prior art, the utility model provides a three-position mechanism signal output device, which realizes the manufacturer's timing requirements by delaying the triggering of travel switches at different positions, thereby accurately judging the triggering status of each travel switch and avoiding faults or accidents caused by inadequate opening and closing of the switch.

[0004] The technical solution of this utility model is as follows:

[0005] A three-station mechanism signal output device, comprising a chassis, a transmission mechanism and a mounting plate arranged in the chassis, characterized in that it also comprises:

[0006] The travel switch comprises a first travel switch, a second travel switch and a third travel switch arranged in a triangle, and the first travel switch and the second travel switch are arranged horizontally and spaced apart on one side of the mounting plate;

[0007] The triggering member is slidably arranged above the mounting plate and moves linearly and reciprocatingly under the drive of the transmission mechanism to trigger the travel switch, and has:

[0008] The pressing part is used to press the travel switch roller, including a first pressing part and a second pressing part arranged at a distance on one side of the trigger member, and a third pressing part arranged at the opposite side of the trigger member, and the distance d between the first pressing part and the first travel switch is 1 , the distance d between the second pressing portion and the second travel switch 2 , the distance d between the third pressing portion and the third travel switch 3 Gradually increase.

[0009] In a specific embodiment, the trigger member is a rectangular plate-like structure, and the first pressing portion and the second pressing portion are arranged at the lower edge thereof, and the first pressing portion and the second pressing portion are arranged horizontally at intervals, wherein the first pressing portion is located at the front and the second pressing portion is located at the rear; the third pressing portion is arranged on the upper edge of the trigger member and is located at the rear in the length direction, and the front end of the third pressing portion is located between the second pressing portion and the third pressing portion in the length direction. Specifically, the first pressing portion and the second pressing portion are bosses extending downward along the lower edge of the trigger member, and the third pressing portion is a boss extending along the upper edge of the trigger member. Specifically, it can be manufactured by stamping a metal sheet.

[0010] When the trigger moves horizontally to the left, due to the distance d between the first pressing portion and the first travel switch 1 , the distance d between the second pressing portion and the second travel switch 2 , the distance d between the third pressing portion and the third travel switch 3 The first pressing part, the second pressing part and the third pressing part will press the first travel switch, the second travel switch and the third travel switch respectively, so as to achieve the delay triggering of the travel switch closure in sequence and implement the timing requirements of the three-station mechanism. Specifically, the spacing d can be set according to the moving speed of the trigger member. 1 ,d 2 ,d 3 When the trigger moves to the right, the first pressing part, the second pressing part and the third pressing part are separated from the first travel switch, the second travel switch and the third travel switch in sequence, so that the travel switch is disconnected.

[0011] In a specific embodiment, the transmission mechanism includes a driving assembly and a main shaft. The main shaft is vertically rotatable and connected to the mounting plate, and rotates forward and reversely under the drive of the driving assembly. A gear is provided on the upper part of the main shaft for driving the trigger member to move back and forth in a straight line. Specifically, a first guide hole is provided in the middle of the trigger member, extending along the length direction of the trigger member, and a transmission part is provided on one side thereof to cooperate with the gear. The transmission part is a plurality of teeth that can mesh with the gear and are arranged in a straight line. Specifically, the first guide hole is an oblong hole, and a transmission part is processed on the upper side. The transmission part is a plurality of teeth arranged in a straight line similar to a rack. The difference from the rack is that the transmission part is directly processed on the trigger member, rather than a split structure. In addition, the transmission part can also be a rack, which is fixed to the trigger member through a connecting member. The positive transmission or reverse rotation of the gear can drive the trigger member to move left or right horizontally through the transmission part.

[0012] In order to vertically position the trigger member and maintain the freedom of horizontal movement, a second guide hole is provided on the trigger member, and the center line of the second guide hole in the length direction is collinear with the center line of the first guide hole in the length direction, and is used for sliding connection with the mounting plate. Specifically, the second guide hole is an oblong hole collinear with the first guide hole, connected to the mounting plate by a bolt, and a bearing or a sliding sleeve is provided between the second guide hole and the bolt to reduce the friction when the trigger member moves horizontally.

[0013] In a specific embodiment, the trigger member is further provided with a third guide hole, which is slidably connected to the mounting plate and is located between the third pressing portion and the first guide hole. The third guide hole is an oblong hole whose length direction is parallel to the second guide hole, and is used to improve the linearity of the horizontal movement of the trigger member, avoid skewing during movement, and thus improve the accuracy of the delay.

[0014] In a specific embodiment, the driving assembly includes a motor, a driving rod connected to the motor, a sliding sleeve slidingly matched with the driving rod, a driving disk connected to the sliding sleeve and driven by the sliding sleeve to rotate forward and reversely, and the driving disk is fixedly connected to the main shaft and drives it to rotate forward and reversely. Specifically, the driving rod is a lead screw, the lower part of the sliding sleeve slidingly matches with the driving rod through a threaded pair, and the upper part is connected to the driving disk and drives it to rotate back and forth.

[0015] The three-station mechanism signal output device also includes a closing microswitch and an opening microswitch electrically connected to the travel switch, and is used to control the opening and closing states.

[0016] The beneficial effects of the utility model are:

[0017] Through the delayed triggering of the travel switches at different positions, the output delay of the opening and closing signals is determined, so as to fully judge the triggering status of each travel switch. The safety of equipment operation is improved, and foreign project standards are met to avoid the output errors of the opening and closing signals caused by the inadequate triggering of the travel switches, which may cause leakage or electric explosion, leading to equipment failure or safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment;

[0019] Figure 2 It is a partial enlarged view of the positional relationship between the trigger member and the travel switch;

[0020] Figure 3 It is a structural diagram of the trigger component;

[0021] Figure 4 It is a schematic diagram of the first state of the trigger member and the travel switch;

[0022] Figure 5 It is a schematic diagram of the second state of the trigger member and the travel switch;

[0023] 1. Chassis; 2. Driving mechanism; 3. Main shaft; 31. Gear; 4. Mounting plate; 5. Trigger; 51. First guide hole; 52. Transmission part; 53. Second guide hole; 54. First pressing part; 55. Second pressing part; 56. Third guide hole; 57. Third pressing part; 6. Travel switch group; 61. First travel switch; 62. Second travel switch; 63. Third travel switch; 7. Closing micro switch; 8. Opening micro switch. DETAILED DESCRIPTION

[0024] The following will further describe the technical means adopted to achieve the predetermined inventive purpose of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0025] See also Figure 1 and Figure 2 As shown, a three-station mechanism signal output device includes a chassis 1, a transmission mechanism and a mounting plate 4 are arranged in the chassis 1, and is characterized in that it also includes:

[0026] The travel switch includes a first travel switch 61, a second travel switch 62 and a third travel switch 63 arranged in a triangle, and the first travel switch 61 and the second travel switch 62 are horizontally spaced apart and arranged on one side of the mounting plate 4;

[0027] The trigger member 5 is slidably arranged above the mounting plate 4, and moves linearly and reciprocatingly under the drive of the transmission mechanism to trigger the travel switch, and has:

[0028] Pressing part, see Figure 3 As shown, the roller for pressing the travel switch includes a first pressing portion 54 and a second pressing portion 55 arranged at intervals on one side of the trigger member 5, and a third pressing portion 57 arranged on the opposite side of the trigger member 5, see Figure 2 As shown, the distance d1 between the first pressing portion 54 and the first travel switch 61, the distance d2 between the second pressing portion 55 and the second travel switch 62, and the distance d3 between the third pressing portion 57 and the third travel switch 63 gradually increase.

[0029] See also Figure 3As shown, in a specific embodiment, the trigger member 5 is a rectangular plate-shaped structure, and the first pressing portion 54 and the second pressing portion 55 are arranged at the lower edge thereof, and the first pressing portion 54 and the second pressing portion 55 are arranged horizontally at intervals, wherein the first pressing portion 54 is located at the front, and the second pressing portion 55 is located at the rear; the third pressing portion is arranged on the upper edge of the trigger member 5 and is located at the rear in the length direction, and the front end of the third pressing portion 57 is located between the second pressing portion 55 and the third pressing portion 57 in the length direction. Specifically, the first pressing portion 54 and the second pressing portion 55 are bosses extending downward along the lower edge of the trigger member 5, and the third pressing portion 57 is a boss extending along the upper edge of the trigger member 5. Specifically, it can be made by stamping a metal plate.

[0030] See also Figure 4 As shown, when the trigger member 5 moves horizontally to the left, the distance d1 between the first pressing portion 54 and the first travel switch 61, the distance d2 between the second pressing portion 55 and the second travel switch 62, and the distance d3 between the third pressing portion 57 and the third travel switch 63 gradually increase. Therefore, the first pressing portion 54, the second pressing portion 55, and the third pressing portion 57 will press the first travel switch 61, the second travel switch 62, and the third travel switch 63 in turn, thereby realizing the sequential delay triggering of the travel switches to close and implementing the timing requirements of the three-station mechanism. Specifically, the distances d1, d2, and d3 can be set according to the moving speed of the trigger member 5 to meet the delay time requirements. See Figure 5 As shown, when the trigger member 5 moves to the right, the first pressing portion 54, the second pressing portion 55, and the third pressing portion 57 are separated from the first travel switch 61, the second travel switch 62, and the third travel switch 63 in sequence, so that the travel switches are disconnected.

[0031] In a specific embodiment, the transmission mechanism includes a driving assembly and a main shaft 3, the main shaft 3 is vertically rotatably connected to the mounting plate 4, and rotates forward and reversely under the drive of the driving assembly, and a gear 31 is provided on the upper part thereof, which is used to drive the trigger member 5 to reciprocate linearly. Specifically, a first guide hole 51 is provided in the middle of the trigger member 5, extending along the length direction of the trigger member 5, and a transmission part 52 is provided on one side thereof to cooperate with the gear 31, and the transmission part 52 is a plurality of teeth that can mesh with the gear 31 and are arranged along a straight line. Specifically, the first guide hole 51 is an oblong hole, and a transmission part 52 is processed on the upper side, and the transmission part 52 is a plurality of teeth arranged linearly similar to a rack. The difference from the rack is that the transmission part 52 is directly processed on the trigger member 5, rather than a split structure. In addition, the transmission part 52 can also be a rack, which is fixed on the trigger member 5 through a connecting member. The positive transmission or reverse rotation of the gear 31 can drive the trigger member 5 to move left or right horizontally through the transmission part 52.

[0032] See also Figure 3As shown, in order to vertically position the trigger member 5 and maintain the freedom of horizontal movement, the trigger member 5 is provided with a second guide hole 53, and the center line of the length direction thereof is collinear with the center line of the length direction of the first guide hole 51, and is used for sliding connection with the mounting plate 4. Specifically, the second guide hole 53 is an oblong hole collinear with the first guide hole 51, connected to the mounting plate 4 by a bolt, and a bearing or a sliding sleeve is provided between the second guide hole 53 and the bolt, so as to reduce the friction force when the trigger member 5 moves horizontally.

[0033] See also Figure 3 As shown, in a specific embodiment, the trigger member 5 is further provided with a third guide hole 56, which is slidably connected to the mounting plate 4 and is located between the third pressing portion 57 and the first guide hole 51. The third guide hole 56 is an oblong hole whose length direction is parallel to the second guide hole 53, and is used to improve the straightness of the horizontal movement of the trigger member 5 to avoid skewing during movement, thereby improving the accuracy of the delay.

[0034] In a specific embodiment, the driving assembly includes a motor, a driving rod connected to the motor, a sliding sleeve slidably matched with the driving rod, a driving disk connected to the sliding sleeve and driven by the sliding sleeve to rotate forward and reversely, and the driving disk is fixedly connected to the main shaft 3 and drives it to rotate forward and reversely. Specifically, the driving rod is a lead screw, the lower part of the sliding sleeve is slidably matched with the driving rod through a threaded pair, and the upper part is connected to the driving disk and drives it to rotate back and forth.

[0035] See also Figure 1 As shown, the three-position mechanism signal output device also includes a closing microswitch 7 and an opening microswitch 8 electrically connected to the travel switch for controlling the opening and closing states.

[0036] The above is a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments and examples. Various changes, equivalent substitutions, improvements, etc. made within the knowledge scope of those skilled in the art without departing from the concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-station mechanism signal output device, comprising a chassis (1), a transmission mechanism and a mounting plate (4) arranged in the chassis (1), characterized in that: Also includes: The travel switch comprises a first travel switch (61), a second travel switch (62) and a third travel switch (63) arranged in a triangle, and the first travel switch (61) and the second travel switch (62) are arranged horizontally and spaced apart on one side of the mounting plate (4); The trigger member (5) is slidably arranged above the mounting plate (4) and moves linearly back and forth under the drive of the transmission mechanism to trigger the travel switch, and has: The pressing portion is used to press the travel switch roller, and comprises a first pressing portion (54) and a second pressing portion (55) arranged at intervals on one side of the trigger member (5), and a third pressing portion (57) arranged on the opposite side of the trigger member (5), wherein the spacing d1 between the first pressing portion (54) and the first travel switch (61), the spacing d2 between the second pressing portion (55) and the second travel switch (62), and the spacing d3 between the third pressing portion (57) and the third travel switch (63) gradually increase.

2. The signal output device according to claim 1, characterized in that: The transmission mechanism comprises a driving assembly and a main shaft (3). The main shaft (3) is vertically rotatably connected to a mounting plate (4) and rotates forward and reversely under the drive of the driving assembly. A gear (31) is provided on the upper part of the main shaft for driving the trigger member (5) to move back and forth in a straight line.

3. The signal output device according to claim 2, characterized in that: A first guide hole (51) is provided in the middle of the trigger member (5) and extends along the length direction of the trigger member (5). A transmission part (52) that cooperates with the gear (31) is provided on one side thereof. The transmission part (52) is a plurality of teeth that can mesh with the gear (31) and are arranged along a straight line.

4. The signal output device according to claim 3, characterized in that: The trigger member (5) is provided with a second guide hole (53), and the center line of the second guide hole (53) in the length direction is colinear with the center line of the first guide hole (51) in the length direction, and is used for sliding connection with the mounting plate (4).

5. The signal output device according to claim 4, characterized in that: The trigger member (5) is also provided with a third guide hole (56), which is slidably connected to the mounting plate (4) and is located between the third pressing portion (57) and the first guide hole (51).

6. The signal output device according to claim 5, characterized in that: The first guide hole (51), the second guide hole (53) and the third guide hole (56) are all oblong holes.

7. The signal output device according to any one of claims 2 to 6, characterized in that: The driving assembly comprises a motor, a driving rod connected to the motor, a sliding sleeve slidably matched with the driving rod, and a driving disk connected to the sliding sleeve and driven by the sliding sleeve to rotate forward and reversely. The driving disk is fixedly connected to the main shaft (3) and drives it to rotate forward and reversely.

8. The signal output device according to claim 7, characterized in that: The driving rod is a lead screw, the lower part of the sliding sleeve is slidably matched with the driving rod through a threaded pair, and the upper part is connected to the driving disk and drives it to reciprocate.

9. The signal output device according to claim 1, characterized in that: It also includes a closing micro switch (7) and an opening micro switch (8) electrically connected to the travel switch.

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