Push rod actuator for increasing rack retention

Abstract

The utility model discloses a push rod actuator capable of increasing rack retention, which belongs to the technical field of push rod actuators and comprises a casing, a driving portion, a torque increasing mechanism and a rack, the casing is divided into a driving area and a stroke area, and the driving area is perpendicular to the stroke area; the driving part is arranged in the driving area; the torque increasing mechanism comprises an electromagnetic clutch device, an elastic piece and a connecting rod, the electromagnetic clutch device is arranged in the driving area and close to the tail end of the driving part, and the elastic piece right faces the electromagnetic clutch device and is connected with the driving part through the connecting rod; the rack is arranged in the stroke area and connected with the driving part in a matched mode. Through the arrangement of the electromagnetic clutch, when the rack extends out in place and the motor is powered off, the electromagnetic clutch adsorbs the elastic piece connected with the motor, limits and increases the no-load rotation torque of the motor, and the no-load rotation torque is amplified through the reduction gear box, so that the retention force of the gear can be effectively increased, and the retention force of the rack is indirectly increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to push rod actuator technical field, concretely relates to a kind of push rod actuators of increasing rack holding force. BACKGROUND

[0002] At present, high-end household appliances develop towards intelligent, centralization, cabinet and integration, gradually eliminate door handle after applying various automatic door openers, so that household appliances are more beautiful. When push rod actuator is applied to household appliance industry, the rack needs to be kept for a period of time after being pushed out, and there is a requirement for keeping force during this period. In many cases, this keeping force is directly applied to the rack in some way. However, the existing push rod actuator is mostly output by motor and reduction gear box, but cannot adjust the output torque, so it cannot directly or indirectly increase the keeping force of the rack. UTILITY MODEL CONTENTS

[0003] The utility model aims at: provide a kind of push rod actuators of increasing rack holding force to solve the above problems, by setting electromagnetic clutch, cooperate with the spring piece connected with motor, limit and increase the no-load rotating torque of motor, can effectively increase the keeping force of gear, indirectly increase the keeping force of rack.

[0004] Technical scheme: the utility model provides a kind of push rod actuators of increasing rack holding force, comprising: shell, drive part, torque increasing mechanism, rack, the shell is divided into drive area and stroke area, the drive area and stroke area are vertically arranged;The drive part is arranged in drive area;The torque increasing mechanism includes: electromagnetic clutch device, spring piece, connecting rod, the electromagnetic clutch device is arranged in drive area, is close to drive part end, the spring piece is opposite electromagnetic clutch device, is connected drive part by connecting rod;The rack is arranged in stroke area and is connected with drive part in cooperation.When rack is extended to position, electromagnetic clutch device attracts spring piece, increases the torque of drive part when no load, to increase the keeping force of rack.

[0005] Further, the above-mentioned push rod actuator of increasing rack holding force is provided with an opening outside the stroke area.

[0006] Further, the above-mentioned push rod actuator of increasing rack holding force is provided with an opening outside the stroke area.

[0007] Further, the push rod actuator of the application has the following beneficial effects: the push rod actuator of the application has the electromagnetic clutch, when the rack is extended to the position, the electromagnetic clutch adsorbs the elastic sheet connected with the motor after the motor is powered off, limits and increases the no-load rotating torque of the motor, and then the rotating torque is enlarged through the reduction gear box, so that the rack retaining force is effectively increased.

[0008] Further, the push rod actuator of the application has the following beneficial effects: the push rod actuator of the application has the electromagnetic clutch, when the rack is extended to the position, the electromagnetic clutch adsorbs the elastic sheet connected with the motor after the motor is powered off, limits and increases the no-load rotating torque of the motor, and then the rotating torque is enlarged through the reduction gear box, so that the rack retaining force is effectively increased.

[0009] Further, the push rod actuator of the application has the following beneficial effects: the push rod actuator of the application has the electromagnetic clutch, when the rack is extended to the position, the electromagnetic clutch adsorbs the elastic sheet connected with the motor after the motor is powered off, limits and increases the no-load rotating torque of the motor, and then the rotating torque is enlarged through the reduction gear box, so that the rack retaining force is effectively increased.

[0010] Further, the push rod actuator of the application has the following beneficial effects: the push rod actuator of the application has the electromagnetic clutch, when the rack is extended to the position, the electromagnetic clutch adsorbs the elastic sheet connected with the motor after the motor is powered off, limits and increases the no-load rotating torque of the motor, and then the rotating torque is enlarged through the reduction gear box, so that the rack retaining force is effectively increased.

[0011] The technical scheme can be seen that the push rod actuator of the application has the following beneficial effects: the push rod actuator of the application has the electromagnetic clutch, when the rack is extended to the position, the electromagnetic clutch adsorbs the elastic sheet connected with the motor after the motor is powered off, limits and increases the no-load rotating torque of the motor, and then the rotating torque is enlarged through the reduction gear box, so that the rack retaining force is effectively increased. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the push rod actuator of the application;

[0013] Figure 2 It is a schematic view of the driving part of the application;

[0014] Figure 3 It is a schematic view of the rack of the application.

[0015] In the figure: the shell 1, the driving part 2, the torque increasing mechanism 3, the rack 4, the driving area 11, the stroke area 12, the opening 13, the electromagnetic clutch device 31, the elastic sheet 32, the connecting rod 33, the motor 21, the reduction gear box 22, the driving shaft 23, the gear 231, the buffer area 41, the notch 42, the second notch 43, the buffer sleeve 411, the lock catch structure 412. DETAILED DESCRIPTION

[0016] Example 1

[0017] As Figures 1-2The push rod actuator for increasing rack holding force shown in the embodiment comprises a housing 1, a driving part 2, a torque increasing mechanism 3, and a rack 4. The housing 1 is divided into a driving area 11 and a stroke area 12, and the driving area 11 and the stroke area 12 are arranged vertically. The driving part 2 is arranged in the driving area 11. The torque increasing mechanism 3 comprises an electromagnetic clutch device 31, an elastic sheet 32, and a connecting rod 33. The electromagnetic clutch device 31 is arranged in the driving area 11 and close to the end of the driving part 2. The elastic sheet 32 is opposite to the electromagnetic clutch device 31 and is connected to the driving part 2 through the connecting rod 33. The rack 4 is arranged in the stroke area 12 and is connected to the driving part 2. When the rack is extended to the position, the electromagnetic clutch device 31 attracts the elastic sheet 32 to increase the torque of the driving part 2 in no-load state, thereby increasing the holding force of the rack 4.

[0018] As shown in the embodiment, Figure 2 The driving part 2 of the push rod actuator for increasing rack holding force comprises a motor 21, a speed reducer gear box 22, and a driving shaft 23. The motor 21 is connected to the speed reducer gear box 22. The end of the motor 21 is connected to the elastic sheet 32 through the connecting rod 33. The driving shaft 23 is connected to the output end of the speed reducer gear box 22. The elastic sheet 32 is attracted by the electromagnetic clutch device 31 to increase the rotating torque of the motor 21 in no-load state. The rotating torque is amplified by the speed reducer gear box 22 to effectively increase the holding force of the gear, thereby indirectly increasing the holding force of the rack 4.

[0019] Embodiment 2

[0020] In this embodiment, the push rod actuator for increasing rack holding force shown in the embodiment, Figure 1 , 3 The stroke area 12 is provided with an opening 13. The end of the rack 4 is provided with a buffer area 41. The buffer area 41 enters the outside of the housing 1 through the opening 13 of the stroke area 12.

[0021] As shown in the embodiment, Figure 3 The buffer area 41 is sleeved with a buffer sleeve 411. The buffer area 41 is provided with a lock catch structure 412. The rack 4 is provided with a notch 42. The buffer area 41 is provided with a second notch 43. The notch 42 and the second notch 43 are both towards the side of the driving part 2. The stroke of the notch 42 and the second notch 43 is set according to the opening angle of the push rod actuator.

[0022] In this embodiment, the driving shaft 23 is provided with two sets of gears 231. The gears 231 are engaged with the teeth on the rack 4.

[0023] It should be noted that the above only describes the technical solutions of the utility model and is not limited. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the utility model technical solutions can be modified or replaced equivalently without departing from the scope of the utility model technical solutions, and all should be covered in the scope of the claims of the utility model.

Claims

1. A push rod actuator to increase rack retention, characterized by: The utility model relates to a kind of push rod actuators, including: Shell (1), the shell (1) is divided into driving area (11) and stroke area (12), the driving area (11) and stroke area (12) are vertically arranged; Driving part (2), the driving part (2) is arranged in driving area (11); Torque increasing mechanism (3), the torque increasing mechanism (3) includes: electromagnetic clutch device (31), elastic sheet (32), connecting rod (33), the electromagnetic clutch device (31) is arranged in driving area (11), close to driving part (2) end, the elastic sheet (32) is opposite electromagnetic clutch device (31), driving part (2) is connected by connecting rod (33); Rack (4), the rack (4) is arranged in stroke area (12), and is connected with driving part (2) cooperation.

2. A putter implement according to claim 1, wherein: The outside of the stroke area (12) is provided with an opening (13).

3. A putter implement according to claim 1, wherein: The driving part (2) includes: motor (21), speed reducer gearbox (22), drive shaft (23), the motor (21) is connected with speed reducer gearbox (22), motor (21) end is connected elastic sheet (32) by connecting rod (33), the drive shaft (23) is connected speed reducer gearbox (22) output end.

4. A push rod actuator to increase rack retention force according to claim 3, wherein: Two sets of gears (231) are provided on the drive shaft (23), and the gears (231) are engaged with the teeth on the rack (4).

5. The putter implement of claim 1, wherein: The end of the rack (4) is provided with a buffer area (41), which passes through the opening (13) outside the stroke area (12) and enters the outside of the shell (1).

6. A putter implement according to claim 5, wherein: The outside of the buffer area (41) is sleeved with a buffer sleeve (411), and the buffer area (41) is provided with a lock catch structure (412).

7. A push rod actuator to increase rack retention force according to claim 6, wherein: The rack (4) is provided with a notch (42), and the buffer area (41) is provided with a second notch (43).

8. A push rod actuator to increase rack retention force according to claim 7, wherein: The notch (42) and the second notch (43) are both towards the side of the driving part (2), and the stroke of the notch (42) and the second notch (43) is set according to the opening angle of the door assembled by the push rod actuator.

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