CN109114860B - Automatic door opening device and refrigerator - Google Patents

Abstract

The invention discloses an automatic door opener and a refrigerator, wherein the automatic door opener comprises a base with a groove, a driving device fixed in the base, a pushing assembly in sliding connection with the groove, and a swinging mechanism meshed with the driving device, the pushing assembly comprises a push rod provided with a sliding groove and a swinging groove, part of the swinging mechanism penetrates through the sliding groove and is connected with the base, and part of the swinging mechanism is arranged in the swinging groove and swings along the swinging groove under the driving of the driving device so as to push the push rod to move along the extending direction of the push rod. The pushing assembly is connected with the driving device through the swinging mechanism, the swinging mechanism is meshed with the driving device, and the driving device drives the pushing assembly to move so as to realize automatic opening and closing of the door body.

Description

Automatic door opening device and refrigerator

Technical Field

The invention relates to the technical field of refrigerators, in particular to an automatic door opening device and a refrigerator.

Background

With the continuous improvement of living standard of people, consumption concept has also changed greatly. The refrigerator with beautiful and elegant appearance, large volume and rich functions has become a market pet. However, when the volume of the refrigerator is increased, the weight of the load of the corresponding door body or drawer and the door seal suction force of the door body or drawer type door body are also larger, so that more and more users feed back the refrigerator door body and are not easy to open.

Disclosure of Invention

The invention aims to solve the technical problem that the defects of the prior art are overcome, and an automatic door opening device and a refrigerator are provided to achieve automatic door opening of the refrigerator.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

an automatic door opening device, comprising: have the grooved base, be fixed in drive arrangement in the base, sliding connection in promotion subassembly in the fluting, and with drive arrangement engaged with swing mechanism, promotion subassembly is including the push rod that is provided with sliding tray and swing groove, the swing mechanism part passes the sliding tray and with the base is connected, the swing mechanism part is arranged in the swing groove, and follow under the drive arrangement drive the swing groove swing, in order to promote the push rod moves along its extending direction.

The automatic door opener comprises a door body, a push assembly and a push head, wherein the push assembly further comprises a push head used for being in contact with the door body, the push head comprises a connecting part and a positioning part connected with the connecting part, the connecting part comprises two connecting plates arranged at intervals, and the push rod part is arranged between the two connecting plates and is respectively in rotating connection with the two connecting plates.

The automatic door opening device comprises a positioning plate and arc transition plates arranged at two ends of the positioning plate, wherein one side of the positioning plate, which is far away from the connecting part, is used for being in contact with a door body.

The automatic door opener is characterized in that the swing groove is located at one end, far away from the push head, of the push rod, and the extending direction of the swing groove is perpendicular to the extending direction of the sliding groove.

The automatic door opener is characterized in that the swing mechanism comprises a swing rod assembly, an installation shaft and a gear tightly matched with the swing rod assembly, one end of the installation shaft penetrates through the sliding groove and then is connected with the base, the other end of the installation shaft penetrates through the swing rod assembly and then is connected with the gear in a rotating mode, and the gear is connected with the driving device and drives the swing rod assembly to swing along the swing groove.

The automatic door opener, wherein, the pendulum rod subassembly includes the mounting disc, for the swing head that the mounting disc turned over and turned over arranges in carousel in the mounting disc, and with mounting disc matched with apron, the carousel cover is located install epaxial, and with the gear passes through the keyway mode and closely cooperates, the swing head is arranged in the swing inslot can be followed the swing groove swings.

The automatic door opener is characterized in that at least one limiting block is arranged on the rotary disc, a limiting groove matched with the limiting block is arranged on the mounting disc, and when the limiting block is arranged in the limiting groove, the mounting disc is clamped with the rotary disc and rotates synchronously.

The automatic door opener is characterized in that the limiting block is a magnetic steel ball, a first through hole and a second through hole are symmetrically formed in the rotary plate, and one-way magnetic columns are respectively arranged in the first through hole and the second through hole so as to adsorb the magnetic steel ball on the rotary plate through the one-way magnetic columns.

The automatic door opening device is characterized in that a first magnet and a second magnet are respectively arranged on two sides of the swing groove, a first Hall sensor is arranged at one end, close to the door body, of the box body, and a second Hall sensor is arranged at one end, far away from the door body, of the box body; when the first inductor is in contact with the first magnet, the pushing assembly is in a minimum stroke, and when the second inductor is in contact with the second magnet, the pushing assembly is in a maximum stroke.

A refrigerator is provided with the automatic door opening device.

Has the advantages that: compared with the prior art, the invention provides an automatic door opener and a refrigerator, wherein the automatic door opener comprises a base with a groove, a driving device fixed in the base, a pushing assembly in sliding connection with the groove, and a swinging mechanism meshed with the driving device, the pushing assembly comprises a push rod provided with a sliding groove and a swinging groove, part of the swinging mechanism penetrates through the sliding groove and is connected with the base, and part of the swinging mechanism is arranged in the swinging groove and swings along the swinging groove under the driving of the driving device so as to push the push rod to move along the extending direction of the push rod. The pushing assembly is connected with the driving device through the swinging mechanism, the swinging mechanism is meshed with the driving device, and the driving device drives the pushing assembly to move so as to realize automatic opening and closing of the door body.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of an automatic door opener according to the present invention.

Fig. 2 is a schematic structural diagram of a view angle of an embodiment of an automatic door opener according to the present invention.

Fig. 3 is a schematic structural diagram of a pushing assembly in an embodiment of the automatic door opener provided by the present invention.

Fig. 4 is a schematic structural diagram of a swing mechanism in an embodiment of the automatic door opener provided by the present invention.

Fig. 5 is a schematic structural diagram of a refrigerator provided by the present invention.

Detailed Description

The invention provides an automatic door opening device and a refrigerator, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail by referring to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention will be further explained by the description of the embodiments with reference to the drawings.

The present embodiment provides an automatic door opening device, as shown in fig. 1 and 2, which includes a base 1, a pushing assembly 2, a driving device 4, and a swing mechanism 3 engaged with the driving device 4. The base 1 is provided with a slot 9, the pushing component 2 is positioned in the slot 9, and the pushing component 2 is connected with the slot 9 in a sliding manner and slides to partially extend out of the slot 9. The pushing assembly 2 comprises a pushing rod 21, a sliding groove 211 and a swinging groove 212 are formed in the pushing rod 21, the swinging rod mechanism part penetrates through the sliding groove 211 and then is connected with the base 1, the swinging mechanism 3 part is arranged in the swinging groove 212 and swings along the swinging groove 212 under the driving of the driving device 4 so as to push the pushing rod 21 to move along the extending direction of the pushing rod 21, and therefore the automatic opening and closing of the refrigerator door body is achieved.

As shown in fig. 1-3, the pushing assembly 2 further includes a pushing head 22, the pushing head 22 is rotatably connected to the pushing rod 21, and the pushing head 22 is located at an end of the pushing rod 21 away from the swing mechanism 3, when the door body is in a door closing state, the pushing rod 21 is located in the slot 9, and the pushing head 22 is flush with an opening at an end of the slot 9 away from the swing mechanism 3 and covers the opening of the slot 9; when the door body is in a door opening state, the push rod 21 partially penetrates through the opening of the slot 9 and is arranged outside the slot 9, and the push head 22 rotates relative to the push rod 21 along the circumferential direction and is attached to the door body, so that the relative movement of the push head 22 and the door body can be avoided, and the abrasion of the push head 22 on the door body is reduced.

Further, the pushing head 22 includes a connecting portion 222 and a positioning portion 221, the connecting portion 222 includes two connecting plates disposed at an interval, one end of the push rod 21 far away from the swing mechanism 3 is disposed between the two connecting plates, and the two connecting plates are hinged to the push rod 21 through a pin 23, so that the pushing head 22 is rotatably connected to the push rod 21. The positioning portion 221 includes a positioning plate and arc transition plates disposed at two ends of the positioning plate, one side of the positioning plate away from the connecting portion 222 is used for contacting with the door body, so that the pushing head 22 forms area contact with the door body, and in the pushing process, the pushing head 22 keeps surface contact with the door body, so as to avoid point contact between the pushing head 22 and the door body, thereby reducing damage of the pushing head 22 to the appearance surface of the door body.

As shown in fig. 1 and 2, the sliding groove 211 is disposed along the extending direction of the open groove 9, and the swinging groove 212 is disposed along a direction perpendicular to the extending direction of the open groove 9, that is, the extending direction of the sliding groove 211 is perpendicular to the extending direction of the swinging groove 212, and when the swinging mechanism 3 swings along the swinging groove 212, it drives the pushing assembly 2 to move along the extending direction of the open groove 9, so as to adjust the relative position of the swinging mechanism 3 and the sliding groove 211. In this embodiment, the length of the swing slot 212 along the extending direction thereof matches the length of the sliding slot 211 along the extending direction thereof, when the swing mechanism 3 swings to an end point near the driving device 4, the pushing component 2 is located in the slot 9 and the swing mechanism 3 contacts with an end of the sliding slot 211 near the pushing head 22, and when the swing mechanism 3 swings to an end far away from the driving device 4, the pushing component 2 is partially located outside the slot 9 and the swing mechanism 3 contacts with an end of the sliding slot 211 far away from the pushing head 22. That is, the swing mechanism 3 converts the swing motion of the swing mechanism along the extending direction of the swing groove 212 into the sliding motion of the pushing assembly 2 along the extending direction of the slot 9, so that the pushing assembly 2 pushes the door body to open/close.

Further, the width of the position of the push rod 21 where the swing groove 212 is provided is greater than the width of the position of the push rod 21 where the swing groove 212 is not provided, the width of the slot 9 is matched with the width of the position of the push rod 21 where the swing groove 212 is provided, and the width of the opening of the slot 9 is equal to the width of the position of the push rod 21 where the swing groove 212 is not provided. When the push rod 21 is disposed in the slot 9, four grooves are formed on the push rod 21 and the inner wall of the slot 9, and are respectively marked as a first groove, a second groove, a third groove and a fourth groove. The side walls of the first groove and the second groove, which are far away from the swing groove 212, are respectively provided with a Hall sensor, the Hall sensor arranged on the side wall of the first groove is marked as a first Hall sensor 8, the Hall sensor arranged on the side wall of the second groove is marked as a second Hall sensor 5, and the first groove and the second groove are positioned on the same side of the push rod 21. Correspondingly, a first magnet 7 is arranged on the outer wall of the swing groove 212 opposite to the first groove, and a second magnet 6 is arranged on the outer wall of the swing groove 212 opposite to the second groove, so that the rotation of the driving device 4 is controlled by the distance between the hall sensor and the magnet. In this embodiment, the first groove is located at an end far away from the door body, and the second groove is located at an end close to the door body, so that when the first inductor contacts the first magnet 7, the pushing assembly 2 is at the minimum stroke, and when the second inductor contacts the second magnet 6, the pushing assembly 2 is at the maximum stroke.

Further, in order to improve the accuracy of the hall sensor and the magnet sensing, a third hall sensor is disposed on the side wall of the third groove far from the swing groove 212, and a fourth hall sensor is disposed on the side wall of the fourth groove far from the swing groove 212, wherein the third groove and the fourth groove are located on the same side of the push rod 21. Correspondingly, a third magnet is arranged on the outer wall of the swing groove 212 opposite to the third groove, and a fourth magnet is arranged on the outer wall of the swing groove opposite to the fourth groove, so that the rotation of the driving device 4 is controlled by the distance between the hall sensor and the magnet. In this way, the minimum formation of the push rod 21 can be determined by the first hall sensor 8 and the first magnet 7, and the third hall sensor and the third magnet, and the maximum stroke of the push rod 21 can be determined by the second hall sensor 5 and the second magnet 6, and the fourth hall sensor and the fourth magnet. Therefore, the accuracy of the induction signal can be improved, and the accuracy of the automatic door opener is improved. In addition, the first hall sensor 8 and the third hall sensor, and the second hall sensor 5 and the fourth hall sensor may function as mutual backup.

As shown in fig. 1, 2 and 4, the swing mechanism 3 includes a swing link assembly, a mounting shaft 36 and a gear 31, one end of the mounting shaft 36 penetrates through the sliding groove 211 and is connected to the base 1, the other end of the mounting shaft passes through the swing link assembly and is connected to the gear 31 in a rotating manner, and the gear 31 is connected to the driving device 4 and can rotate the mounting shaft 36 under the driving of the driving device 4. The swing link assembly and the gear 31 are tightly matched in a key way and can synchronously rotate with the gear 31, so that when the gear 31 rotates by the driving device 4, the gear 31 drives the swing link assembly to swing, and the swing link assembly swings along the swing groove 212.

As shown in fig. 4, the swing link assembly includes a mounting plate 32, a swing head 33, a rotating plate 34 and a cover plate 37, wherein the swing head 33 is folded toward a swing groove 212 with respect to the mounting plate 32, and the swing head 33 is partially disposed in the swing groove 212 and can swing along the swing groove 212. The side of the mounting plate 32 away from the swing groove 212 is in contact with the gear 31, and the side close to the swing groove 212 is connected to the cover plate 37. The mounting plate 32 is provided with a mounting groove penetrating through the mounting plate 32, the rotary plate 34 is assembled in the mounting groove, one end of the rotary plate is in contact with the cover plate 37 to be supported by the cover plate 37, and the other end of the rotary plate is in close fit with the gear 31 in a key way, so that the swing link assembly and the gear 31 rotate synchronously. Thus, when the driving device 4 drives the gear 31 to rotate, the gear 31 drives the rotating disc 34 and the mounting disc 32 to rotate synchronously, so that the swinging head 33 swings along the swinging groove 212.

As shown in fig. 4, at least one limiting block is disposed on the turntable 34, a limiting groove matched with the limiting block is disposed on the mounting disc 32, and when the limiting block is disposed in the limiting groove, the mounting disc 32 is engaged with the turntable 34 and synchronously rotates, so that when the gear 31 drives the turntable 34 to rotate, the mounting disc 32 and the swing head 33 connected to the mounting disc 32 synchronously rotate, and the swing head 33 swings along the swing groove 212. In addition, when the mounting disc 32 receives an external force, the mounting disc 32 can rotate around the rotary disc 34, so that when the pushing assembly 2 is pushed manually, the pushing assembly 2 drives the swinging head 33 to swing along the swinging groove 212, and the swinging head 33 drives the mounting plate to rotate relative to the rotary disc 34, thereby avoiding the problem that when the push rod 21 is pushed out, the driving device 4 stops moving, the swinging rod stops at a certain fixed position, and the push rod 21 cannot be pushed back.

Further, the number of the limiting blocks is two, and the number of the limiting grooves in the mounting disc 32 is two. The two limit blocks are symmetrically arranged on the outer surface of the rotary disc 34, and the two limit grooves are symmetrically arranged on the mounting disc 32, namely, the two limit grooves are symmetrically arranged on the inner surface of the mounting groove. In this embodiment, the limiting block adopts magnetic steel balls 35, a first through hole and a second through hole are arranged on the turntable 34, the first through hole and the second through hole are symmetrically arranged, and unidirectional magnetic columns are arranged in the first through hole and the second through hole, so that the magnetic steel balls 35 are adsorbed on the turntable 34 by attracting the unidirectional magnetic columns and the magnetic steel balls 35. In addition, the cover plate 37 is a metal cover plate, and the magnetic steel balls 35 are adsorbed on the metal cover plate, so that the magnetic steel balls 35 are located at one end of the turntable 34 close to the metal cover plate. Thus, when the mounting plate 32 rotates relative to the rotary plate 34, the magnetic steel balls 35 are always positioned at one end of the rotary plate 34 close to the metal cover plate and matched with the limiting grooves under the action of the one-way magnetic columns. In addition, when the mounting plate 32 rotates relative to the rotary plate 34 under the action of external force, attractive force is generated between the one-way magnetic column and the magnetic steel ball 35, the external force applied to the mounting plate 32 can be reduced under the action of the attractive force, the force required by manually pushing the automatic door opening device is reduced, and therefore convenience is brought to the use of a user.

As shown in fig. 1 and 2, the driving device 4 may include a driving motor 42 and a reduction gear 41 set, and the driving motor is connected with the gear 31 through the reduction gear 41 set to drive the gear 31 to rotate by the driving motor 42. In this embodiment, the base 1 may be a box body formed by a box base and a box cover, the pushing assembly 2, the swinging mechanism 3 and the driving device 4 are all disposed in the box body, and the opening of the slot 9 is located on the box body, so that the pushing assembly 2 can move to the outside of the box body to push the door body. In addition, in order to reduce the noise of the automatic door opening device, a shock pad may be provided on the cassette holder.

Based on the above automatic door opening device, the present invention also provides a refrigerator, as shown in fig. 5, which is equipped with the automatic door opening device 100 according to the above embodiment.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. An automatic door opener, its characterized in that, it includes: have the grooved base, be fixed in drive arrangement in the base, sliding connection in promotion subassembly in the fluting, and with drive arrangement engaged with swing mechanism, promotion subassembly is including the push rod that is provided with sliding tray and swing groove, the swing mechanism part passes the sliding tray and with the base is connected, the swing mechanism part is arranged in the swing groove, and follow under the drive arrangement drive the swing groove swing, in order to promote the push rod moves along its extending direction.

2. The automatic door opener according to claim 1, wherein the pushing assembly further comprises a pushing head for contacting with the door body, the pushing head comprises a connecting portion and a positioning portion connected with the connecting portion, the connecting portion comprises two connecting plates arranged at intervals, and the pushing rod portion is arranged between the two connecting plates and is rotatably connected with the two connecting plates respectively.

3. The automatic door opener according to claim 2, wherein the positioning portion comprises a positioning plate and arc-shaped transition plates arranged at two ends of the positioning plate, and one side of the positioning plate, which is far away from the connecting portion, is used for contacting with the door body.

4. The automatic door opener according to claim 2, wherein the swing slot is located at an end of the push rod away from the push head, and extends in a direction perpendicular to an extending direction of the sliding slot.

5. The automatic door opening device according to claim 1, wherein the swing mechanism comprises a swing link assembly, a mounting shaft and a gear closely matched with the swing link assembly, one end of the mounting shaft penetrates through the sliding groove and is connected with the base, the other end of the mounting shaft penetrates through the swing link assembly and is rotationally connected with the gear, and the gear is connected with the driving device so as to drive the swing link assembly to swing along the swing groove through the gear.

6. The automatic door opener according to claim 5, wherein the swing link assembly comprises a mounting plate, a swing head which is turned over relative to the mounting plate, a rotary plate which is arranged in the mounting plate, and a cover plate which is matched with the mounting plate, the rotary plate is sleeved on the mounting shaft and is tightly matched with the gear in a key way, and the swing head is arranged in the swing groove and can swing along the swing groove.

7. The automatic door opener according to claim 6, wherein at least one limiting block is disposed on the rotary plate, a limiting groove for matching with the limiting block is disposed on the mounting plate, and when the limiting block is disposed in the limiting groove, the mounting plate is engaged with the rotary plate and rotates synchronously.

8. The automatic door opener according to claim 7, wherein the limiting block is a magnetic steel ball, the rotary plate is symmetrically provided with a first through hole and a second through hole, and the first through hole and the second through hole are respectively provided with a one-way magnetic column, so that the magnetic steel ball is adsorbed on the rotary plate through the one-way magnetic column.

9. The automatic door opening device according to claim 1, wherein a first magnet and a second magnet are respectively arranged on two sides of the swing groove, a first Hall sensor is arranged at one end, close to the door body, of the base, and a second Hall sensor is arranged at one end, far away from the door body, of the base; when the first Hall sensor contacts with the first magnet, the pushing assembly is in the minimum stroke, and when the second Hall sensor contacts with the second magnet, the pushing assembly is in the maximum stroke.

10. A refrigerator provided with an automatic door opening device according to any one of claims 1 to 9.

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