Push rod actuator with static retention force provided by elastic wedge block

Abstract

The utility model discloses a push rod actuator with static retentivity provided by an elastic wedge block, which belongs to the technical field of push rod actuators and comprises a shell, a gear motor, a rack and a static retentivity component, the shell is L-shaped and is divided into an upper cover and a lower cover, one side of the shell is a driving area, the other side of the shell is a stroke area, and the middle joint of the shell is a matching output area; the gear motor is arranged in the driving area, the output end of the gear motor is connected with the driving shaft, the driving shaft enters the matched output area, and a gear set is arranged on the driving shaft. The rack is arranged in the stroke area and comprises a tooth end and a buffering end, and a lower wedge block is arranged at the outermost end of the tooth end. A through hole is formed in the stroke area of the upper cover, and an elastic wedge block is arranged in the through hole. The electric connector is simple to operate, low in cost, convenient to install, flexible and convenient, and the elastic wedge block is arranged on the upper cover to regulate and control the static retention force, so that the problem of continuous power-on maintenance is avoided.

Description

Technical Field

[0001] This utility model relates to the field of push rod actuator technology, specifically to a push rod actuator in which an elastic wedge provides static holding force. Background Technology

[0002] Currently, high-end home appliances are developing towards intelligence, centralization, cabinet-style design, and integration. With the application of various automatic door opener / close actuators, door handles are gradually being phased out, making appliances more aesthetically pleasing. In many home appliance examples, push-rod actuators are used to push the door open to a certain travel position. The door's own weight and the springs inside the hinges generate a significant closing force. At this point, if the actuator is de-energized, it needs to pause for a few seconds to allow the user time to manually open the door. During these few seconds, the actuator itself must maintain a certain static holding force. Since the self-locking force of the geared motor is insufficient, a push-rod actuator with an elastic wedge providing static holding force is needed to avoid requiring continuous power. Utility Model Content

[0003] The purpose of this utility model is to provide a push rod actuator that provides static holding force by an elastic wedge to solve the above problems. It adopts a mechanical structure design on the housing to achieve a large static holding force. It has the characteristics of simple operation, low cost, easy installation, flexibility and convenience, low power consumption, and miniaturization of the actuator, thus avoiding the need for other power sources to continuously supply power for maintenance.

[0004] Technical Solution: This utility model provides a push rod actuator with static holding force provided by an elastic wedge, comprising: a housing, a geared motor, a rack, and a static holding force assembly. The housing is L-shaped and divided into an upper cover and a lower cover. One side of the housing is a drive area, and the other side is a stroke area. The junction in the middle is a mating output area, and the mating output area has an opening on the outer side of the stroke area. The geared motor is located in the drive area, and its output end is connected to a drive shaft. The drive shaft enters the mating output area and has a gear set. The rack is located in the stroke area, with one end extending from the opening. The rack includes a tooth end and a buffer end. The lower wedge is located at the outermost end of the tooth end. The upper cover has a through hole in the stroke area, and an elastic wedge is located in the through hole. The elastic wedge includes a thin-walled connecting plate and an upper wedge. The thin-walled connecting plate is vertically located in the middle of the through hole of the upper cover, and the upper wedge is located below the thin-walled connecting plate. The upper and lower wedges are arranged opposite each other, and both contact surfaces are sloped structures. The initial contact side is a steep slope, and the other side is a gentle slope. The holding force is adjusted by the elastic wedge. The lower wedge can easily pass the upper wedge during its movement, and provides resistance during its retraction, thereby achieving a larger static holding force. This requires the motor to reverse to overcome the resistance and retract the rack.

[0005] Furthermore, in the aforementioned push rod actuator where a static holding force is provided by an elastic wedge, the upper cover is designed with an external structure conforming to that of a geared motor in the drive area.

[0006] Furthermore, in the aforementioned push rod actuator where an elastic wedge provides static holding force, the tooth end is connected to a gear set, and the buffer end is disposed through an opening outside the engagement output area.

[0007] Furthermore, in the aforementioned push rod actuator that provides static holding force using an elastic wedge, the tooth end and buffer end are connected to the tooth end with a slot on the drive shaft side. There are two slots on the tooth end and one on the buffer end. The slots have different strokes, and the stroke can be set according to the opening angle required by the product, making it highly adaptable.

[0008] Furthermore, in the aforementioned push rod actuator where an elastic wedge provides static holding force, a buffer sleeve is provided on the outer side of the buffer end, and a locking structure is provided at the buffer sleeve.

[0009] Furthermore, in the aforementioned push rod actuator where an elastic wedge provides static holding force, micro switches are symmetrically arranged on both sides of the drive shaft, and the rollers below the micro switches engage with slots.

[0010] Furthermore, in the aforementioned push rod actuator where a static holding force is provided by an elastic wedge, the mating output area has limit rollers on both sides of the opening.

[0011] Furthermore, in the aforementioned push rod actuator that uses an elastic wedge to provide static holding force, the upper cover has a buckle plate on its outer side, the lower cover has a buckling groove that corresponds to the buckle plate, and the lower cover has several mounting holes on its outer side.

[0012] Furthermore, in the aforementioned push rod actuator where a static holding force is provided by an elastic wedge, the magnitude of the static holding force is adjusted by adjusting the length, width, and height of its thin-walled connecting plate, the contact area between the upper and lower wedges, and the steepness of the wedge.

[0013] Furthermore, in the aforementioned push rod actuator where a static holding force is provided by an elastic wedge, the upper cover 11 adjusts the magnitude of the static holding force by adjusting the material and thickness.

[0014] As can be seen from the above technical solution, the present invention has the following beneficial effects: The push rod actuator of the present invention, which provides static holding force by elastic wedge, adopts a mechanical structure with an upper cover and elastic wedge. The static holding force can be adjusted by adjusting the length, width and height of its thin-walled connecting plate, the contact area between the upper wedge and the lower wedge, and the steepness. Alternatively, the static holding force can be adjusted by adjusting the shell material and thickness. It is simple to operate, low in cost, easy to install, flexible and convenient, low in power consumption, and has the characteristics of miniaturization of the actuator, thus avoiding the need for other power sources to continuously provide power. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a push rod actuator of the present invention, in which an elastic wedge provides static holding force;

[0016] Figure 2 This is a schematic diagram of the internal structure of the push rod actuator of this utility model;

[0017] Figure 3 This is a schematic diagram of the rack structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the top cover of this utility model;

[0019] Figure 5 This is a schematic diagram of the elastic wedge block of this utility model.

[0020] In the diagram: 1. Housing; 2. Gear motor; 3. Rack; 4. Micro switch; 5. Limit roller; 11. Upper cover; 12. Lower cover; 121. Drive area; 122. Stroke area; 123. Output area; 21. Drive shaft; 211. Gear set; 31. Tooth end; 32. Buffer end; 311. Lower wedge; 312. Buffer sleeve; 321. Locking structure; 322. Elastic wedge; 111. Thin-walled connecting plate; 1111. Upper wedge; 1112. Buckle plate; 112. Fastening groove; 124. Mounting hole; 125. Detailed Implementation

[0021] Example 1

[0022] like Figure 1-2The illustrated push rod actuator, which utilizes an elastic wedge to provide static holding force, includes: a housing 1, a reduction motor 2, a rack 3, and a static holding force assembly 4. The housing 1 is L-shaped and consists of an upper cover 11 and a lower cover 12. One side of the housing 1 is a drive area 121, and the other side is a travel area 122. The junction in the middle is a mating output area 123, which has an opening facing the outer side of the travel area 122. The reduction motor 2 is located in the drive area 121, and its output end is connected to a drive shaft 21. The drive shaft 21 enters the mating output area 123, and a gear set 211 is mounted on the drive shaft 21. The rack 3 is located in the travel area 122. In the rack 3, one end extends from the opening. The rack 3 comprises two parts: a toothed end 31 and a buffer end 32. The lower wedge 311 is located at the outermost end of the toothed end 31. The upper cover 11 has a through hole in the travel area 122. An elastic wedge 111 is provided in the through hole. The elastic wedge 111 includes a thin-walled connecting plate 1111 and an upper wedge 1112. The thin-walled connecting plate 1111 is vertically arranged in the middle of the through hole of the upper cover 11. The upper wedge 1112 is located below the thin-walled connecting plate 1111. The upper wedge 1112 and the lower wedge 311 are arranged opposite each other. Both contact surfaces are sloped structures. The initial contact side is a steep slope, and the other side is a gentle slope. The holding force is adjusted by the elastic wedge. The lower wedge 311 is controlled to easily pass through the upper wedge 1112 during the travel process and provides obstruction during the retraction process, thereby achieving a larger static holding force. The motor needs to reverse to overcome this and retract the rack 3.

[0023] like Figure 4 The illustrated push rod actuator uses an elastic wedge to provide static holding force, and the upper cover 11 is designed with an external structure in the drive area 121 that conforms to the shape of the geared motor 2.

[0024] like Figure 2-3 The illustrated push rod actuator uses an elastic wedge to provide static holding force. The tooth end 31 is connected to the gear set 211, and the buffer end 32 is provided through the opening on the outside of the engagement output area 123. At the connection between the tooth end 31 and the buffer end 32 and the tooth end 31, a slot 312 is provided on the side of the drive shaft 21. There are two slots on the tooth end 31 and one on the buffer end 32. The slots 312 have different strokes, and the stroke can be set according to the opening angle required by the product, making it highly adaptable.

[0025] In this embodiment, micro switches 4 are symmetrically arranged on both sides of the drive shaft 21, and the rollers below the micro switches 4 cooperate with the slots 312.

[0026] Example 2

[0027] Based on Example 1, in this example, as... Figure 3The push rod actuator shown is provided with a static holding force provided by an elastic wedge. The buffer end 32 is provided with a buffer sleeve 321 on the outside, and a locking structure 322 is provided at the buffer sleeve 321.

[0028] In this embodiment, the output area 123 is provided with limiting rollers 5 on both sides of the opening. The spacing between the limiting rollers 5 is equal to the width of the rack 3, so as to ensure the stability of the movement of the rack 3.

[0029] like Figure 4-5 The push rod actuator shown is provided with a static holding force by an elastic wedge. The upper cover 11 is provided with a buckle plate 112 on the outside, and the lower cover 12 is provided with a buckling groove 124 that corresponds to and cooperates with the buckle plate 112. The lower cover 12 is provided with a plurality of mounting holes 125 on the outside.

[0030] In this embodiment, the elastic wedge 111 adjusts the magnitude of the static holding force by adjusting the length, width and height of its thin-walled connecting plate 1111, the contact area between the upper wedge 1112 and the lower wedge 311, and the steepness.

[0031] In this embodiment, the upper cover 11 adjusts the magnitude of the static holding force by adjusting the material and thickness.

[0032] It should be noted that the above description is merely a technical solution of the utility model and not a limitation. Although the present utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of the utility model without departing from the scope of the present utility model, and all such modifications and substitutions should be covered within the scope of the claims of the present utility model.

Claims

1. A push rod actuator with a static holding force provided by an elastic wedge, characterized in that: include: The housing (1) is L-shaped and is divided into an upper cover (11) and a lower cover (12). One side of the housing (1) is the driving area (121), the other side is the travel area (122), and the middle junction is the output area (123). The output area (123) is provided with an opening on the outside of the travel area (122). The upper cover (11) is designed with an external structure that conforms to the geared motor (2). A geared motor (2) is provided in the drive area (121), and its output end is connected to a drive shaft (21). The drive shaft (21) enters the engagement output area (123), and a gear set (211) is provided on the drive shaft (21). A rack (3) is provided in the travel area (122), with one end extending from the opening, and a lower wedge (311) is provided on the rack (3); The upper cover (11) has a through hole in the travel area (122), and an elastic wedge (111) is provided in the through hole. The elastic wedge (111) includes a thin-walled connecting plate (1111) and an upper wedge (1112). The thin-walled connecting plate (1111) is vertically arranged in the middle of the through hole of the upper cover (11), and the upper wedge (1112) is arranged below the thin-walled connecting plate (1111). The upper wedge (1112) and the lower wedge (311) are arranged opposite each other, and both sides of the contact surface are sloped structures. The initial contact side is a steep slope and the other side is a gentle slope.

2. The push rod actuator according to claim 1, characterized in that: The rack (3) includes two parts: a tooth end (31) and a buffer end (32), and the lower wedge (311) is located at the outermost end of the tooth end (31).

3. A push rod actuator with static holding force provided by an elastic wedge as described in claim 2, characterized in that: The tooth end (31) is connected to the gear set (211), and the buffer end (32) is set through the opening outside the engagement output area (123).

4. A push rod actuator with static holding force provided by an elastic wedge as described in claim 3, characterized in that: At the connection between the tooth end (31) and the buffer end (32) and the tooth end (31), a slot (312) is provided on the side of the drive shaft (21). There are two slots on the tooth end (31) and one on the buffer end (32). The slots (312) have different strokes, which are determined according to the opening angle of the product.

5. A push rod actuator with static holding force provided by an elastic wedge as described in claim 4, characterized in that: The buffer end (32) is provided with a buffer sleeve (321) on the outside, and a locking structure (322) is provided at the buffer sleeve (321).

6. A push rod actuator according to claim 1, characterized in that: Microswitches (4) are symmetrically arranged on both sides of the drive shaft (21), and the rollers below the microswitches (4) cooperate with the slots (312).

7. A push rod actuator according to claim 1, characterized in that: The output area (123) is provided with limiting rollers (5) on both sides of the opening.

8. A push rod actuator according to claim 1, characterized in that: The upper cover (11) is provided with a buckle plate (112) on the outside, and the lower cover (12) is provided with a buckling groove (124) that corresponds to and cooperates with the buckle plate (112). The lower cover (12) is provided with a plurality of mounting holes (125) on the outside.

9. A push rod actuator according to claim 1, characterized in that: The elastic wedge (111) adjusts the magnitude of the static holding force by adjusting the length, width and height of its thin-walled connecting plate (1111), the contact area between the upper wedge (1112) and the lower wedge (311), and the steepness.

10. A push rod actuator according to claim 1, characterized in that: The upper cover (11) adjusts the magnitude of the static holding force by adjusting the material and thickness.

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