Push rod actuator with large static holding force

Abstract

The utility model discloses a push rod actuator with larger static retention, which belongs to the technical field of push rod actuators, and comprises a shell, a speed reducing motor, a rack and a static retention 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. The static retention component comprises an adjusting component and an upper wedge block, the upper wedge block is arranged above a stroke area of an upper cover of the adjusting component, and the upper wedge block is arranged below the upper cover and connected with the adjusting component. The device is simple to operate, low in cost, convenient to install, flexible and convenient, and avoids the problem of continuous power-on maintenance by regulating and controlling the static retention force.

Description

TECHNICAL FIELD

[0001] The utility model relates to push rod actuator technical field, concretely relates to a push rod actuator with greater static holding force. BACKGROUND

[0002] At present, high-end household appliances develop towards intelligence, centralization, cabinet and integration, and gradually eliminate door handle after applying various automatic door opening actuators, so that household appliances are more beautiful. In many household appliance cases, push rod actuators are used to push the door body to a certain stroke position, and the door body weight and hinge internal spring will generate a large door closing force. At this time, in the case of actuator power failure, a certain time is left for manual opening of the door body. In the several seconds, the actuator itself needs to have a certain static holding force, and a push rod actuator with greater static holding force is needed to avoid the need for continuous power supply. UTILITY MODEL CONTENTS

[0003] The utility model discloses a push rod actuator with greater static holding force solves the above problems, adopts simple mechanical structure to realize greater static holding force, has the advantages of simple operation, low cost, convenient installation, flexible and convenient, can select static holding force assembly position according to the situation, and avoids the shortcoming that continuous power supply is maintained.

[0004] Technical scheme: the utility model provides a push rod actuator with greater static holding force, include: casing, reduction motor, rack, static holding force assembly, the casing is L type, and is divided into upper cover and lower cover, and one side of casing is drive area, and the other side is stroke area, and the middle junction is matched output area, and the matched output area is equipped with the opening opposite the outside of stroke area, the reduction motor sets up in drive area, and the output end is connected drive shaft, and the drive shaft enters matched output area, and is equipped with gear set on drive shaft, the rack sets up in stroke area, and one end stretches out from the opening, and the rack includes two parts of tooth end and buffer end, and the tooth end most outer end is equipped with lower wedge, the static holding force assembly includes: adjusting assembly, upper wedge, set up in the stroke area above adjusting assembly upper cover, the upper wedge sets up below upper cover, and is connected adjusting assembly. Holding force is adjusted through static holding force assembly adjusting assembly to the position of upper wedge, thereby controlling the contact area of upper wedge and lower wedge, thereby adjusting the upper limit of static holding force.

[0005] Further, the push rod actuator with large static holding force has the adjusting assembly, which comprises a fixed plate, a connecting column, a spring and an insertion block. The fixed plate is a plate structure with a downward protruding middle part, and the protruding part is matched with the mounting groove 111 in size. The fixed plate is mounted on the mounting groove. The connecting column is fixedly connected with the upper wedge block through the fixed plate and the upper cover, and the upper end of the connecting column is provided with a cap. The spring is arranged around the outer side of the connecting column. The insertion block is inserted into the middle part of the fixed plate and clamped below the cap of the connecting column, and the connecting column is pulled to lift the upper wedge block below.

[0006] Further, the push rod actuator with large static holding force has the upper cover which is designed with the outer shape structure matched with the speed reducer in the driving area.

[0007] Further, the push rod actuator with large static holding force has the gear end which is connected with the gear set, and the buffer end which is arranged through the opening outside the matching output area.

[0008] Further, the push rod actuator with large static holding force has the gear end and the buffer end which are provided with notches on the side of the driving shaft, and the gear end is provided with two notches and the buffer end is provided with one notch. The notches have different strokes, and the strokes can be set according to the required opening angle of the product, and the applicability is strong.

[0009] Further, the push rod actuator with large static holding force has the buffer end which is provided with a buffer sleeve head outside, and the buffer sleeve head is provided with a lock structure.

[0010] Further, the push rod actuator with large static holding force has the micro switch which is symmetrically arranged on both sides of the driving shaft, and the roller below the micro switch is matched with the notch.

[0011] Further, the push rod actuator with large static holding force has the limiting roller which is arranged on both sides of the opening of the matching output area.

[0012] Further, the push rod actuator with large static holding force has the two mounting grooves which are arranged above the stroke area of the upper cover.

[0013] Further, the push rod actuator with large static holding force has the following beneficial effects: the push rod actuator with large static holding force has the mechanical structure of the static holding force assembly, the contact surface of the upper wedge block and the lower wedge block is adjusted to control the static holding force, the operation is simple, the cost is low, the installation is convenient, flexible and convenient, the static holding force assembly can be flexibly adjusted and installed according to the needs of the product, a plurality of stroke specifications can be realized on one push rod actuator, manual disassembly of the product for position adjustment is avoided, and the problem of continuous power supply of the push rod actuator is avoided.

[0014] The technical scheme can be seen as follows: the push rod actuator with large static holding force has the following beneficial effects: the push rod actuator with large static holding force has the mechanical structure of the static holding force assembly, the contact surface of the upper wedge block and the lower wedge block is adjusted to control the static holding force, the operation is simple, the cost is low, the installation is convenient, flexible and convenient, the static holding force assembly can be flexibly adjusted and installed according to the needs of the product, a plurality of stroke specifications can be realized on one push rod actuator, manual disassembly of the product for position adjustment is avoided, and the problem of continuous power supply of the push rod actuator is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of the push rod actuator with large static holding force.

[0016] Figure 2 It is a schematic view of the push rod actuator with large static holding force.

[0017] Figure 3 It is a schematic view of the rack structure.

[0018] Figure 4 It is a schematic view of the upper cover.

[0019] Figure 5 It is a schematic view of the static holding force assembly structure.

[0020] In the figure: the shell 1, the reduction motor 2, the rack 3, the static holding force assembly 4, the micro switch 5, the limiting roller 6, the upper cover 11, the lower cover 12, the driving area 121, the stroke area 122, the matching output area 123, the driving shaft 21, the gear set 211, the tooth end 31, the buffer end 32, the lower wedge block 311, the adjusting assembly 41, the upper wedge block 42, the slot 312, the buffer sleeve head 321, the lock catch structure 322, the mounting groove 111, the fixed plate 411, the connecting column 412, the spring 413, and the plug 414. DETAILED DESCRIPTION

[0021] Example 1

[0022] As Figures 1-2 shown in a kind of push rod executor with greater static holding force, comprising: shell 1, reduction motor 2, rack 3, static holding force component 4, the shell 1 is L type, and is divided into upper cover 11 and lower cover 12, one side of shell 1 is drive area 121, the other side is stroke area 122, the middle junction is matched output area 123, the matched output area 123 is provided with opening on the outside of stroke area 122 opposite 122;The reduction motor 2 is arranged in drive area 121, and the output end is connected drive shaft 21, the drive shaft 21 enters matched output area 123, and gear set 211 is arranged on drive shaft 21;The rack 3 is arranged in stroke area 122, and one end is stretched out from opening, and rack 3 includes two parts of tooth end 31 and buffer end 32, the outermost end of tooth end 31 is equipped with lower wedge block 311;The static holding force component 4 includes: adjusting component 41, upper wedge block 42, the setting is adjusted component 41, the upper cover 11 is arranged above stroke area 122, the upper wedge block 42 is arranged below upper cover 11, and is connected adjusting component 41.Holding force is adjusted by adjusting component 41 to the position of upper wedge block 42 using adjusting component 41 of static holding force component 4, so as to control the contact area of upper wedge block 42 and lower wedge block 311, thereby adjusting the upper limit of static holding force.

[0023] As Figure 4 shown in a kind of push rod executor with greater static holding force, the upper cover 11 is designed with the outer shape structure of reduction motor 2 in drive area 121.

[0024] As Figures 2-3 shown in a kind of push rod executor with greater static holding force, the tooth end 31 is connected with gear set 211, and the buffer end 32 is arranged through the opening outside matched output area 123;The tooth end 31 and buffer end 32 are connected with the notch 312 on one side of drive shaft 21, the tooth end 31 is equipped with two, and the buffer end 32 is equipped with one, the stroke of notch 312 is different, and the stroke can be set according to the opening angle required by product, and the applicability is strong.

[0025] In the embodiment, the drive shaft 21 is symmetrically provided with microswitch 5 on both sides, and the roller below microswitch 5 is matched with notch 312.

[0026] Embodiment 2

[0027] On the basis of embodiment 1, in this embodiment, as Figure 3 shown in a kind of push rod executor with greater static holding force, the outside of buffer end 32 is equipped with buffer sleeve head 321, and the lock catch structure 322 is arranged at buffer sleeve head 321.

[0028] In this embodiment, the matching output area 123 is provided with limiting rollers 6 on both sides of the opening, and the distance between the limiting rollers 6 is equal to the width of the rack 3, so as to ensure the stability of the movement of the rack 3.

[0029] As shown in the drawings, a push rod actuator with large static holding force is provided with two installation grooves 111 above the stroke area 122 of the upper cover 11. Figure 4

[0030] As shown in the drawings, a push rod actuator with large static holding force is provided with two installation grooves 111 above the stroke area 122 of the upper cover 11. Figure 5 As shown in the drawings, a push rod actuator with large static holding force is provided with two installation grooves 111 above the stroke area 122 of the upper cover 11.The upper wedge block 42 and the lower wedge block 311 are both inclined surfaces, the higher part is a steep slope, and the remaining part is a gentle slope. When the adjusting assembly 41 adjusts the upper wedge block 42, the upper wedge block 42 and the lower wedge block 311 are in contact through the gentle slope, which facilitates the lower wedge block 311 to pass over the upper wedge block 42. When the adjusting assembly 41 adjusts the upper wedge block 42, the upper wedge block 42 is in contact with the steep slope of the lower wedge block 311 under the action of the spring 413, so that the lower wedge block 311 cannot easily retreat, thereby realizing large static holding force.

[0031] In this embodiment, the number of static holding force assemblies 4 is consistent with the number of installation grooves 111, and the upper cap of the inner connecting column 412 is provided with a clamping groove on both sides. The plug block 414 is inserted from the outside to the inside, respectively clamped below the cap of the first connecting column 412 and below the cap groove of the second connecting column 412, so that the height position of the upper wedge block 42 in the two static holding force assemblies 4 is high on the outside and low on the inside, respectively providing small and large static holding force states. Various stroke specifications can be realized on one push rod actuator, and the installation position of the static holding force can be selected according to the situation to avoid the need for manual disassembly of the product for position adjustment. Only by pulling out the plug block 414, the static holding force of the push rod actuator can be changed.

[0032] 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 with a large static holding force, 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 a driving area (121), the other side is a travel area (122), and the middle intersection is a matching output area (123). The matching output area (123) is provided with an opening on the outside of the travel area (122); A reduction motor (2), the reduction motor (2) being arranged in a driving area (121), an output end of which is connected to a driving shaft (21), the driving shaft (21) entering a matching output area (123), and a gear set (211) being provided on the driving shaft (21); A rack (3), the rack (3) is arranged in the travel area (122), one end of which extends out from the opening, the rack (3) comprising a tooth end (31) and a buffer end (32), the outermost end of the tooth end (31) being provided with a lower wedge block (311); A static retaining force assembly (4) comprising: an adjusting assembly (41) and an upper wedge (42), wherein the adjusting assembly (41) is arranged above a travel area (122) of an upper cover (11) of the adjusting assembly (41); and the upper wedge (42) is arranged below the upper cover (11) and connected to the adjusting assembly (41).

2. The push rod actuator with large static holding force according to claim 1, characterized in that: The upper cover (11) is designed with an external structure in the driving area (121) that conforms to the reduction motor (2).

3. The push rod actuator with large static holding force according to claim 1, characterized in that: The tooth end (31) is connected in cooperation with the gear set (211), and the buffer end (32) is arranged through the outer opening of the cooperation output area (123).

4. The push rod actuator with large static holding force according to claim 3, characterized in that: The tooth end (31) and the buffer end (32) are connected to the tooth end (31) at a position facing the drive shaft (21). Two notches are provided on the tooth end (31) and one is provided on the buffer end (32). The strokes of the notches (312) are different and are determined according to the opening angle of the product door.

5. The push rod actuator with large static holding force according to claim 1, characterized in that: A buffer sleeve (321) is provided on the outside of the buffer end (32), and a locking structure (322) is provided on the buffer sleeve (321).

6. The push rod actuator with large static holding force according to claim 1, characterized in that: Micro switches (5) are symmetrically arranged on both sides of the drive shaft (21), and the rollers below the micro switches (5) cooperate with the notches (312).

7. The push rod actuator with large static holding force according to claim 1, characterized in that: The matching output area (123) is provided with limiting rollers (6) on both sides of the opening.

8. The push rod actuator with large static holding force according to claim 1, characterized in that: The upper cover (11) is provided with two mounting grooves (111) above the travel area (122).

9. The push rod actuator with large static holding force according to claim 1, characterized in that: The adjustment assembly (41) includes: a fixed plate (411), a connecting column (412), a spring (413), and an insert (414). The fixed plate (411) is a plate-like structure with a downwardly protruding middle portion, and the protruding portion thereof matches the size of the mounting slot (111). The fixed plate (411) is mounted on the mounting slot (111). The connecting column (412) passes through the fixed plate (411) and the upper cover (11) and is fixedly connected to the upper wedge (42). A cap is provided at the upper end of the connecting column (412). The spring (413) surrounds the outer side of the connecting column (412). The insert (414) is inserted into the middle portion of the fixed plate (411) and is stuck under the cap of the connecting column (412), thereby pulling up the connecting column (412) and lifting the upper wedge (42) below.

10. The push rod actuator with large static holding force according to claim 1, characterized in that: The upper wedge block (42) and the lower wedge block (311) are both inclined surface structures, wherein the higher portion is a steep slope surface and the remaining portion is a gentle slope surface.

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