CN215478961U - Lead wire collecting device capable of feeding back position, actuator and refrigerator - Google Patents

Abstract

The utility model belongs to the technical field of intelligent home furnishing, and particularly relates to a lead collecting device capable of feeding back a position, an actuator and a refrigerator. The lead wire collecting device includes: a housing in which an accommodation space is formed; the wire collecting roller is arranged in the accommodating space, the wire collecting roller is elastically and rotatably connected with the shell, and a wire collecting groove is formed in the surface of the wire collecting roller; the lead wire is wound in the wire collecting groove, one end of the lead wire, which can be pulled out relative to the wire collecting groove, is marked as a movable end, the other end of the lead wire is marked as a fixed end, the movable end penetrates out of the shell, and the fixed end penetrates through the wire collecting groove; and the detection assembly detects the rotation angle of the line concentration roller relative to the shell, so that the moving distance of the movable end is judged. This lead wire collection device, with the orderly rolling of lead wire and the integrative integration of position detection, both solved the lead wire rolling problem, prevent that the lead wire from receiving destruction such as extrusion scraping in the motion process, save the cost that additionally sets up position detection device again. The lead collection device can also be used in conjunction with an actuator.

Description

Lead wire collecting device capable of feeding back position, actuator and refrigerator

Technical Field

The utility model belongs to the technical field of intelligent home furnishing, and particularly relates to a lead collecting device capable of feeding back a position, an actuator and a refrigerator.

Background

Automation and intellectualization are one of the important development directions of current household products. At present, some intelligent household products with drawers capable of being automatically pushed and pulled or partition plates capable of being automatically lifted exist in the market. Most of these products are arranged in a way that the actuator body does not move and the actuator parts (such as rack, push rod, etc.) move relative to the actuator body, which requires the moving actuator parts to be large in size to achieve full opening of the drawer and long-distance lifting of the partition. The technical route has higher cost, can increase the complexity of household products, reduce the reliability of the whole product and even bring certain potential safety hazards. For example, patent CN207881333U provides an automatic opening and closing drawer mechanism, which is intended for automatic opening and closing of a drawer of a refrigerator. The working principle of the automatic opening and closing drawer mechanism is that a motor drives a gear set, and the gear set drives a rack to output, so that the drawer is automatically opened and closed. In order to achieve a full-stroke opening of the drawer, the toothed rack must meet certain length requirements. When the rack is long, the size of the actuator is large, and the whole machine needs to provide enough space for placing the rack, which increases the complexity and cost of the system. Meanwhile, components such as an air compressor and the like are arranged on the rear side of the drawer below the refrigerator, and if a large rack exists, intersection is inevitably generated between the components and the rear-side air compressor, so that potential safety hazards are large.

Currently, there are also a few actuators that use the opposite arrangement, i.e., the actuator is stationary and the actuator body moves with the moving components, such as drawers, partitions, etc. When the arrangement mode is adopted, the wire harness for providing power for the actuator main body needs to withstand the test of repeated bending for a long time in the use process, which puts very high requirements on the durability and the reliability of the wire harness and also leads to high cost of the wire harness. In the operation process, if the wire harness is not timely and accurately returned, the wire harness is extruded, and certain potential safety hazards are generated. In addition, the placement of the irregular wiring harness additionally occupies a small storage space. For example, patent CN110926090A discloses a refrigerator with an automatic opening and closing door, in which a drawer door automatically slides out or in a main body of the refrigerator through an automatic opening and closing door assembly, and the main body of the automatic opening and closing door assembly reciprocates along with a drawer door body. However, this patent does not describe the manner in which the controller is connected to the door opening and closing actuator assembly, nor how to overcome the above-described disadvantages of the reciprocating movement of the wiring harness.

In addition, no matter the technical solution of patent CN207881333U or patent CN110926090A, in order to implement automatic control, a position detection device needs to be separately arranged in the actuator to implement the determination of the position, which not only increases the overall complexity, but also brings extra cost of the wire harness. Moreover, the accuracy and cost of conventional position detection devices are closely related. The photoelectric encoder has high precision, large occupied space, poor operation reliability in a low-temperature or temperature impact environment and high cost; the micro switch is matched with the rack, the triggering mode is single, the precision depends on the number of the salient points or the grooves on the rack, if the cost factor is considered, the number of the salient points or the grooves is reduced, and in the process of entering and exiting the drawer, the overshoot phenomenon easily occurs due to the high stroke speed of the rack.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a lead collecting device capable of feeding back a position, an actuator and a refrigerator, and aims to solve the problems in the prior art.

The utility model is realized by the following technical scheme: a position-feedbackable lead collection device comprising:

a housing in which an accommodation space is formed;

the wire collecting roller is arranged in the accommodating space, the wire collecting roller is elastically and rotatably connected with the shell, and a wire collecting groove is formed in the surface of the wire collecting roller;

the lead wire is wound in the wire collecting groove, one end of the lead wire, which can be pulled out relative to the wire collecting groove, is marked as a movable end, the other end of the lead wire is marked as a fixed end, the movable end penetrates out of the shell, and the fixed end penetrates through the wire collecting groove; the lead wire is understood in a broad sense and includes a wire harness, a flat cable, an independent wire and the like which are formed by a plurality of wires.

And the detection assembly detects the rotation angle of the line concentration roller relative to the shell, so that the moving distance of the movable end is judged.

In the utility model, because the line concentration roller is elastically and rotatably connected with the shell, when the movable end of the lead wire is pulled out, the line concentration roller always has the rotation torque for rewinding the lead wire into the line concentration groove, and the lead wire is wound on the line concentration roller to the maximum extent, thereby ensuring the orderly collection of the lead wire, avoiding the damage of the lead wire, ensuring the one-to-one correspondence between the moving distance of the movable end and the rotation angle of the line concentration roller relative to the shell, and ensuring the accurate detection of the distance.

Furthermore, the detection assembly comprises a microswitch fixed in the shell and at least one trigger part which is arranged on the wire collecting roller and matched with the microswitch, and the microswitch is triggered by the trigger part and generates an electric signal every time the microswitch passes through the trigger part, so that the rotation angle of the wire collecting roller relative to the shell can be determined according to the number of times the microswitch is triggered by the trigger part.

Further, the triggering part is a protrusion or a groove arranged on the line concentration roller, or the triggering part is a plurality of protrusions or a plurality of grooves arranged on the line concentration roller in an annular array, and the density of the triggering part can be reasonably adjusted according to the requirement of detection precision.

Furthermore, the lead collecting device capable of feeding back the position further comprises a sliding guide connection assembly, and the sliding guide connection assembly is used for electrically connecting the fixed end moving along with the line concentration roller to a component not moving along with the line concentration roller. The basic functions of the lead rolling and position detection of the utility model can be realized if a lead direct connection mode is adopted instead of a sliding guide connection component, but the rotatable angle of the line concentration roller relative to the shell is limited by the flexibility of the lead. After the sliding guide connection assembly is arranged, the rotatable angle of the line concentration roller relative to the shell is not limited any more.

Specifically, the sliding guide connection assembly comprises a group of guide connection rings and a group of elastic brushes; the guide connecting ring and the elastic brush are opposite in position, and are in one-to-one correspondence and elastic sliding contact; the installation mode of the sliding guide connection component is any one of the following two modes:

the first method is as follows: the guide connection ring and the shell are relatively fixed, the elastic brush is fixed on the wire collecting roller, and the fixed end is electrically connected with the elastic brush;

the second method comprises the following steps: the elastic brush is fixed relative to the shell, the guide ring is fixed on the wire collecting roller, and the fixed end is electrically connected with the guide ring.

Furthermore, the elastic brush comprises a C-shaped fixing part and elastic contact parts which are integrally connected with two ends of the fixing part and tilt towards the same side; the fixing part is used for fixing the elastic brush at a preset position, and the elastic contact part is in contact with the guide connection ring.

Furthermore, a volute spiral spring is connected between the wire collecting roller and the shell to realize elastic rotatable connection; one end of the volute spiral spring is fixed on the shell, and the other end of the volute spiral spring is fixed on the wire collecting roller; the elastic force of the spiral spring provides a rotational driving force for pulling the wire and winding the wire around the wire collecting roller. When one end of the spiral spring is fixed and the other end of the spiral spring is acted with torque, the spiral spring generates bending elastic deformation under the action of the applied torque, so that the spring generates torsion in a plane, the size of a deformation angle is in direct proportion to the torque, and after the acting torque disappears, the elastic force accumulated by the spring is released, so that the spiral spring has the tendency of recovering the initial state. The spiral spring is preferably a flat spiral spring wound by a long and thin high-carbon steel material with a constant cross section.

Preferably, a fixed shaft is arranged in the shell, and a clamping groove is formed in the center of the fixed shaft along the axial direction; one side of the wire collecting roller is provided with a round counter bore capable of accommodating a volute spiral spring, and the inner wall of the round counter bore is provided with a side groove; one end of the spiral spring is clamped in the clamping groove, and the other end of the spiral spring is clamped in the side groove. The fixing manner of the two ends of the spiral spring is not limited to the above, and for example, the fixing manner may be hinge fixing, pin fixing, gasket connecting fixing, plastic sealing fixing, and screw fixing.

Furthermore, the center of the line concentration roller is also provided with a shaft hole, the fixed shaft extends into the shaft hole, and the fixed shaft and the shaft hole are in clearance fit.

Based on the lead collecting device capable of feeding back the position, the utility model further provides a linear motion actuator, which comprises an actuator main body, an execution component, a power supply and a control unit, wherein the execution component is driven by the actuator main body to make linear motion relative to the actuator main body; the actuator body is fixed on a movable carrier which moves linearly relative to the fixed carrier; the movable end is connected to the actuator main body to provide driving force for the actuator main body, and the fixed end, the power supply and the detection assembly are electrically connected with the control unit; the detection assembly detects the rotation angle of the line concentration roller relative to the shell to determine the relative position between the movable carrier and the fixed carrier, and the control unit controllably transmits the driving force of the power supply to the actuator main body according to the signal of the detection assembly and the input execution signal.

Based on the linear motion actuator, the utility model also provides a refrigerator, which comprises a fixed carrier, a movable carrier and a linear motion actuator; the fixed carrier is a refrigerator shell, and the movable carrier is a drawer which can be drawn out relative to the refrigerator shell; the control unit controllably transmits the driving force of the power supply to the actuator main body according to the signal of the detection assembly and the execution signal input by a user through the refrigerator operation panel, so that the drawer can be automatically and controllably moved out and retracted.

Has the advantages that: the lead collecting device capable of feeding back the position, provided by the utility model, has the advantages of reasonable and compact integral structure, simple component arrangement, economic cost and reliable performance. The utility model skillfully integrates the orderly winding of the lead and the position detection, solves the problem of winding of the lead, prevents the lead from being damaged by extrusion, scraping and the like in the motion process, and saves the cost of additionally arranging a position detection device. In addition, the lead collecting device is matched with the actuator for use, so that the miniaturization and the light weight of the actuator can be promoted, the integrated design of the actuator main body and the movable carrier can be realized, the complexity of the whole structure is reduced, the reliability of the system is improved, and the space is further saved. The lead collecting device can be matched with various linear motion actuators such as horizontal pushing, lifting and the like, is suitable for household appliances such as refrigerators, disinfection cabinets and the like, is also suitable for household products such as intelligent curtains, intelligent door curtains and the like, has remarkable advantages particularly in long-distance motion, and has high practical application value.

Drawings

Fig. 1 is a schematic structural diagram of a housing.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 and 4 are schematic views of the internal structure of the lead collecting device.

Fig. 5 is a schematic structural view of the collector roll.

Fig. 6 is a schematic view showing the engagement of the collector roll and the brush.

Fig. 7 is a schematic view of the mating of the wiper and the lead.

Fig. 8 is a schematic view of the docking ring and the wiper.

Fig. 9 is a schematic view of the micro switch and the trigger.

Fig. 10 is a schematic view of the arrangement of the trigger part on the collector roll in example 2.

In the figure, the housing 1, the line concentration roller 2, the line concentration groove 21, the lead wire 3, the movable end 31, the fixed end 32, the detection assembly 4, the microswitch 41, the trigger portion 42, the sliding guide assembly 5, the guide ring 51, the elastic brush 52, the fixing portion 521, the elastic contact portion 522, the spiral spring 6, the fixing shaft 11, the clamping groove 111, the circular counter bore 22, the side groove 221 and the shaft hole 23.

Detailed Description

The utility model is further illustrated by the following specific examples, which are illustrative and intended to illustrate the problem and explain the utility model, but not limiting.

Example 1

A position-feedbackable lead collection device, as shown in fig. 1 to 9, comprising:

the shell body 1, the shell body 1 takes the form of the cylinder, form the accommodating space in the shell body 1;

the wire collecting roller 2 is disc-shaped and is arranged in the accommodating space, the wire collecting roller 2 is elastically and rotatably connected with the shell 1, and a wire collecting groove 21 is formed in the surface of the wire collecting roller 2;

the lead 3 is wound in the line concentration groove 21, one end of the lead 3, which can be pulled out relative to the line concentration groove 21, is marked as a movable end 31, the other end is marked as a fixed end 32, the movable end 31 penetrates through a through hole in the shell 1 and penetrates out of the shell 1, and the fixed end 32 penetrates through the through hole in the line concentration groove 21 and is led out towards the center of the line concentration roller 2;

and a detection component 4, wherein the detection component 4 detects the rotation angle of the line concentration roller 2 relative to the shell 1 so as to judge the moving distance of the movable end 31.

In this embodiment, the detecting assembly 4 includes a micro switch 41 fixed in the housing 1 and a trigger portion 42 disposed on the line collecting roller 2 and engaged with the micro switch 41, the trigger portion 42 is a protrusion, and a contact portion of the protrusion and the micro switch 41 is an arc shape to reduce abrasion; the detection component 4 determines the rotation angle of the wire collecting roller 2 relative to the shell 1 according to the number of times that the microswitch 41 is triggered by the trigger part 42.

In this embodiment, the device further includes a sliding guide assembly 5, where the sliding guide assembly 5 includes a set of guide rings 51 and a set of brushes 52; the guide ring 51 and the elastic brush 52 are opposite in position, and the guide ring 51 and the elastic brush 52 are in one-to-one correspondence and are in elastic slidable contact; the installation mode of the sliding guide connection component 5 is as follows: the guide ring 51 is concentrically fixed to the substrate, the substrate is fixed to the housing 1, the brush 52 is fixed to the collector roll 2, and the fixed end 32 is electrically connected to the brush 52. In addition, a lead wire can be led out from the conductive ring 51 for connecting with an external power supply or a control unit capable of supplying electric energy.

In this embodiment, the elastic brush 52 includes a C-shaped fixing portion 521 and elastic contact portions 522 integrally connected to two ends of the fixing portion 521 and tilted toward the same side; the fixing portion 521 is fixed to one side of the collector roller 2, and the elastic contact portion 522 is in contact with the docking ring 51.

In the embodiment, a volute spiral spring 6 is connected between the line concentration roller 2 and the shell 1 to realize elastic rotatable connection; one end of the volute spiral spring 6 is fixed on the shell 1, and the other end of the volute spiral spring is fixed on the wire collecting roller 2; the elastic force of the spiral spring 6 provides a rotational driving force for pulling the lead wire 3 and winding the lead wire 3 around the wire collecting roller 2. Specifically, a fixed shaft 11 is arranged in the shell 1, and a clamping groove 111 is formed in the center of the fixed shaft 11 along the axial direction; one side of the wire collecting roller 2 is provided with a round counter bore 22 which can accommodate the volute spiral spring 6, and the inner wall of the round counter bore 22 is provided with a side groove 221; one end of the spiral spring 6 is clamped in the clamping groove 111, and the other end of the spiral spring 6 is clamped in the side groove 221.

In this embodiment, the center of the line collecting roller 2 is further provided with a shaft hole 23, and the fixing shaft 11 extends into the shaft hole 23, so that the line collecting roller 2 rotates around the fixing shaft 11 on the shell 1.

Example 2

A position feedback lead wire collecting device, as shown in figures 1 to 10, replaces the triggering part 42 on the surface of the wire collecting roller 2 in the embodiment 1 by a bulge with a plurality of bulges arranged in a circular array, and the rest structure is unchanged.

Example 3

A linear motion actuator comprises an actuator body, an actuating component, a power supply and a control unit, wherein the actuating component is driven by the actuator body to do linear motion relative to the actuator body, and the linear motion actuator also comprises a lead wire collecting device (shown in figures 1 to 9) capable of feeding back positions, which is provided by embodiment 1; the casing 1 of the executive component and the lead collecting device is arranged on a fixed carrier, and the main body of the executive component is fixed on a movable carrier which moves linearly relative to the fixed carrier; the movable end 31 is connected to the actuator body to provide driving force for the actuator body, a lead is led out of the lead ring 51 and connected with the control unit, and the power supply and the detection assembly 4 are also electrically connected with the control unit; the detection component 4 detects the rotation angle of the wire concentration roller 2 relative to the shell 1 according to the number of times that the microswitch 41 is triggered, so as to determine the relative position between the movable carrier and the fixed carrier, and the control unit controllably transmits the driving force of the power supply to the actuator main body according to the signal of the detection component 4 and the input execution signal.

Example 4

A refrigerator comprising a fixed carrier, a movable carrier and the linear motion actuator provided in embodiment 3; the fixed carrier is a refrigerator shell, and the movable carrier is a drawer which can be drawn out relative to the refrigerator shell; the control unit controllably transmits the driving force of the power supply to the actuator main body according to the signal of the detection assembly 4 and the execution signal input by the user through the refrigerator operation panel, thereby realizing the automatic controllable moving-out and withdrawing of the drawer.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.

Claims (10)

1. A position-feedbackable lead wire collection device, characterized in that: the method comprises the following steps:

the device comprises a shell (1), wherein an accommodating space is formed in the shell (1);

the wire collecting roller (2) is arranged in the accommodating space, the wire collecting roller (2) is elastically and rotatably connected with the shell (1), and a wire collecting groove (21) is formed in the surface of the wire collecting roller (2);

the lead wire (3) is wound in the wire collecting groove (21), one end, which can be pulled out relative to the wire collecting groove (21), of the lead wire (3) is marked as a movable end (31), the other end of the lead wire is marked as a fixed end (32), the movable end (31) penetrates out of the shell (1), and the fixed end (32) penetrates through the wire collecting groove (21);

and the detection component (4) detects the rotation angle of the line concentration roller (2) relative to the shell (1) so as to judge the moving distance of the movable end (31).

2. A position feedbackable lead collection device according to claim 1 wherein: the detection assembly (4) comprises a microswitch (41) fixed in the shell (1) and at least one trigger part (42) which is arranged on the wire collecting roller (2) and matched with the microswitch (41); the detection component (4) determines the rotation angle of the wire collecting roller (2) relative to the shell (1) according to the number of times that the microswitch (41) is triggered by the trigger part (42).

3. A position feedbackable lead collection device according to claim 2 wherein: the triggering part (42) is a protrusion or a groove arranged on the line concentration roller (2), or the triggering part (42) is a plurality of protrusions or a plurality of grooves arranged on the line concentration roller (2) in an annular array.

4. A position feedbackable lead collection device according to claim 2 wherein: the device is characterized by further comprising a sliding guide-connection assembly (5), wherein the sliding guide-connection assembly (5) comprises a group of guide-connection rings (51) and a group of elastic brushes (52); the guide ring (51) is opposite to the elastic brush (52), and the guide ring (51) is in one-to-one correspondence with the elastic brush (52) and is in elastic slidable contact with the elastic brush; the installation mode of the sliding guide connection component (5) is any one of the following two modes:

the first method is as follows: the guide connection ring (51) is fixed relative to the shell (1), the elastic brush (52) is fixed on the line concentration roller (2), and the fixed end (32) is electrically connected with the elastic brush (52);

the second method comprises the following steps: the elastic brush (52) is relatively fixed with the shell (1), the guide connection ring (51) is fixed on the wire concentration roller (2), and the fixed end (32) is electrically connected with the guide connection ring (51).

5. A position feedbackable lead collection device according to claim 4 wherein: the elastic brush (52) comprises a C-shaped fixing part (521) and elastic contact parts (522) which are integrally connected to two ends of the fixing part (521) and tilt towards the same side; the fixing portion (521) is used for fixing the elastic brush (52) at a preset position, and the elastic contact portion (522) is in contact with the guide ring (51).

6. A position feedbackable lead collection device according to claim 2 wherein: a volute spiral spring (6) is connected between the wire collecting roller (2) and the shell (1) to realize elastic rotatable connection; one end of the volute spiral spring (6) is fixed on the shell (1), and the other end of the volute spiral spring is fixed on the wire collecting roller (2); the elastic force of the spiral spring (6) provides a rotary driving force for tensioning the lead wire (3) and winding the lead wire (3) on the wire collecting roller (2).

7. A position feedbackable lead collection device according to claim 6 wherein: a fixed shaft (11) is arranged in the shell (1), and a clamping groove (111) is formed in the center of the fixed shaft (11) along the axial direction; a round counter bore (22) capable of accommodating a volute spiral spring (6) is formed in one side of the wire collecting roller (2), and a side groove (221) is formed in the inner wall of the round counter bore (22); one end of the spiral spring (6) is clamped in the clamping groove (111), and the other end of the spiral spring (6) is clamped in the side groove (221).

8. A position feedbackable lead collection device according to claim 7 wherein: the central part of the wire collecting roller (2) is also provided with a shaft hole (23), and the fixed shaft (11) extends into the shaft hole (23).

9. An actuator, characterized by: the lead wire collecting device comprises an actuator body, an actuator part, a power supply and a control unit, wherein the actuator part is driven by the actuator body to do linear motion relative to the actuator body, and the lead wire collecting device further comprises a position feedback lead wire collecting device according to any one of claims 1 to 8; the actuator and the casing (1) of the lead collecting device are arranged on a fixed carrier, and the actuator body is fixed on a movable carrier which moves linearly relative to the fixed carrier; the movable end (31) is connected to the actuator main body to provide driving force for the actuator main body, and the fixed end (32), the power supply and the detection assembly (4) are electrically connected with the control unit; the detection assembly (4) detects the rotation angle of the wire concentration roller (2) relative to the shell (1) to determine the relative position between the movable carrier and the fixed carrier, and the control unit controllably transmits the driving force of the power supply to the actuator body according to the signal of the detection assembly (4) and the input execution signal.

10. A refrigerator, characterized in that: comprising a stationary carrier, a movable carrier and an actuator according to claim 9; the fixed carrier is a refrigerator shell, and the movable carrier is a drawer which can be drawn out relative to the refrigerator shell; the control unit controllably transmits the driving force of a power supply to the actuator main body according to the signal of the detection assembly (4) and an execution signal input by a user through the refrigerator operation panel, so that the drawer can be automatically and controllably moved out and retracted.

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