Automatic door opening device and refrigeration equipment

Abstract

The utility model discloses an automatic door opening device and refrigeration equipment, and relates to the technical field of refrigeration equipment, the automatic door opening device comprises a base, a driving assembly and an ejector rod, and the driving assembly is installed on the base; the ejector rod is movably arranged on the base, the ejector rod is in transmission connection with the driving assembly, and the ejector rod can partially extend out of one side of the base under the driving of the driving assembly; the tail end of the ejector rod is rotationally connected with a rotating piece. According to the technical scheme, a top door structure at the front end of the top rod is replaced by the rotating piece rotationally connected with the front end of the top rod, so that the friction force between the top rod and the door body is reduced, the noise between the top rod and the door body is reduced, and the door body rotates more smoothly due to the fact that the friction force between the rotating piece and the door body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to an automatic door opening device and refrigeration equipment. Background Art

[0002] At present, in the home appliance industry, all mainstream companies have deployed electric door opening technology, and the methods of pushing doors are similar. A rectangular push rod and a rubber sleeve push the door body horizontally to rotate. In the initial state, the push rod and the door body are vertical and the entire front of the push rod is in contact with the door body. As the door body starts to rotate, the push rod and the door body are in line contact and slide friction on the door body. With the rubber sleeve, the friction force when the push rod drives the door body is large, which wastes energy and makes the force changes during the rotation of the door body more complex and uneven, affecting the smoothness of the door rotation and increasing noise. Utility Model Content

[0003] The main purpose of the utility model is to provide an automatic door opening device and a refrigeration device, aiming to reduce the noise and energy consumption generated by the automatic door opening device when opening the door.

[0004] To achieve the above-mentioned purpose, the automatic door opening device proposed in the present invention comprises:

[0005] base;

[0006] A drive assembly is mounted on the base;

[0007] A push rod is movably disposed on the base, the push rod is transmission-connected to the drive assembly, and the push rod can be partially extended from one side of the base under the drive of the drive assembly;

[0008] Wherein, the end of the push rod is rotatably connected to a rotating member.

[0009] In one embodiment, the rotating member includes a wheel body and a sleeve, and the sleeve is sleeved on the wheel body.

[0010] In one embodiment, the push rod includes a sliding portion and a transmission portion connected to each other, the transmission portion is transmission-connected to the driving assembly, and the sliding portion is slidably connected to the base.

[0011] In one embodiment, a sliding groove is provided on the back side of the sliding portion, and a guide protrusion is provided on the base corresponding to the sliding groove. When driven by the driving assembly, the push rod can slide along the extension direction of the guide protrusion.

[0012] In one embodiment, the driving assembly includes a driving device and a gear transmission mechanism that are transmission-connected, and the transmission part includes a rack meshing with the gear transmission mechanism.

[0013] In one embodiment, the gear transmission mechanism includes a final gear, which includes an internal gear and an external tooth plate fixed to the internal gear, the tooth portion of the external tooth plate extending out of the outer periphery of the internal gear, the internal gear is transmission-connected to the drive device, and the external tooth plate is meshed with the rack.

[0014] In one embodiment, the transmission part is arranged as an inclined plate, and the push rod has a first position housed in the base and a second position extending from the base. When the transmission part is in the first position, the distance between the transmission part and the axis of the internal gear is D1, and when the transmission part is in the second position, the distance between the transmission part and the axis of the internal gear is D2, and D1 is less than D2.

[0015] In one embodiment, when the push rod is located at the first position, the outer tooth plate has a third position engaged with the rack, and when the push rod is located at the second position, the outer tooth plate has a fourth position engaged with the rack, and the third position is closer to the axis of the internal gear than the fourth position.

[0016] In one embodiment, the driving device includes a driving motor, the driving motor includes a motor body and a motor shaft connected to each other, a threaded transmission member is sleeved on the motor shaft, the gear transmission mechanism includes a first gear, the threaded transmission member is transmission-connected to the first gear, and the first gear is transmission-connected to the last gear.

[0017] In one embodiment, the first gear includes a main gear and a sub gear that are coaxially arranged, the main gear is engaged with the threaded transmission member, the sub gear is transmission-connected to the final gear, and the diameter of the main gear is larger than the diameter of the sub gear.

[0018] The present utility model also proposes a refrigeration device, which includes an automatic door opening device, and the automatic door opening device includes a base, a drive assembly and a push rod, and the drive assembly is installed on the base; the push rod is movably arranged on the base, and the push rod is transmission-connected to the drive assembly. Under the drive of the drive assembly, the push rod can be partially extended from one side of the base; wherein, the end of the push rod is rotatably connected to a rotating part.

[0019] The technical solution of the present utility model replaces the top door structure at the front end of the top rod with a rotating part rotatably connected to the front end of the top rod, thereby reducing the friction between the top rod and the door body, reducing the noise between the top rod and the door body, and reducing the friction between the rotating part and the door body, making the rotation of the door body smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the structure of the automatic door opening device and the door body of the utility model;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure of the automatic door opening device;

[0023] Figure 3 for Figure 2 Schematic diagram of the structure at A in the middle;

[0024] Figure 4 It is a structural diagram of the cooperation between the ejector rod and the rotating member;

[0025] Figure 5 This is a structural diagram of the final gear.

[0026] Description of Figure Numbers:

[0027] 100. Automatic door opening device; 200. Door body; 1. Base; 11. Guide protrusion; 2. Drive assembly; 21. Drive device; 211. Drive motor; 211a. Motor body; 211b. Motor shaft; 212. Threaded transmission member; 22. Gear transmission mechanism; 221. Final gear; 221a. Internal gear; 221b. External gear plate; 222. First gear; 222a. Main gear; 222b. Sub-gear; 3. Push rod; 31. Sliding part; 311. Slide groove; 32. Transmission part; 321. Rack; 4. Rotating part.

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] At present, in the home appliance industry, all mainstream companies have deployed electric door opening technology, and the methods of pushing doors are similar. A rectangular push rod and a rubber sleeve push the door body horizontally to rotate. In the initial state, the push rod and the door body are vertical and the entire front of the push rod is in contact with the door body. As the door body starts to rotate, the push rod and the door body are in line contact and slide friction on the door body. With the rubber sleeve, the friction force when the push rod drives the door body is large, which wastes energy and makes the force changes during the rotation of the door body more complex and uneven, affecting the smoothness of the door rotation and increasing noise.

[0033] In view of this, the present invention proposes an automatic door opening device 100. The automatic door opening device 100 of the present invention can be applied to refrigeration equipment, wherein the refrigeration equipment can be a refrigerator, freezer or other equipment with refrigeration function.

[0034] See also Figure 1 and Figure 2 In one embodiment of the present invention, the automatic door opening device 100 includes a base 1, a driving component 2 and a push rod 3, the driving component 2 is installed on the base 1; the push rod 3 is movably arranged on the base 1, and the push rod 3 is transmission-connected to the driving component 2. Under the drive of the driving component 2, the push rod 3 can be partially extended from one side of the base 1; wherein, the end of the push rod 3 is rotatably connected to a rotating part 4.

[0035] Specifically, the automatic door opening device 100 is used to automatically open the door body 200 of the refrigeration equipment. The automatic door opening method can be to control the automatic door opening device 100 to open the door body 200 through voice recognition of the "open the door" command through the electronic control module, or to provide a touch button on the door body 200. After touching the touch button, the electronic control module controls the automatic door opening device 100 to open the door body 200.

[0036] The base 1 of the automatic door opening device 100 is used to install and fix the drive component 2 and the push rod 3. The drive component 2 is used to drive the push rod 3 to move, wherein the drive component 2 can be a hinge, a gear set, or a cylinder drive, and no specific restrictions are made here. When the push rod 3 extends out of the base 1, it contacts the door body 200. As the push rod 3 gradually extends outward from the base 1, the push rod 3 applies a thrust to the door body 200, causing the door body 200 to gradually open. Considering that in order to reduce the friction between the push rod 3 and the door body 200, a rotating member 4 is provided at the end of the push rod 3 (i.e., the end of the push rod 3 facing the door body 200), and the door body 200 is pushed open by the rotating member 4, wherein the number of rotating members 4 can be one, two, or more; the rotating member 4 can be made of foam material, plastic material, or rubber material, and no specific restrictions are made here.

[0037] It should be noted that the end of the push rod 3 is rotatably connected to the rotating member 4. When the automatic door opening device 100 is in the process of pushing the door body 200 open, the rotating member 4 is constantly rolling, so that the contact surface with the door body 200 is changing every moment, so it is not easy to generate excessive noise, and the rolling friction is smaller than the existing conventional push rod 3 model (sliding friction throughout the process). It should be further explained that the rotating member 4 can be configured as a plurality of balls or a plurality of rollers. In this embodiment, the rotating member 4 is configured as a roller. In the process of driving the door body 200 to open, there is a mutual force between the roller and the door body 200, and the reaction force given to the roller by the door body 200 is always directed to the axis of the roller, so that the force on the door body 200 is more uniform, the friction between the rotating member 4 and the door body 200 is small, and the door body 200 rotates more smoothly.

[0038] The technical solution of the present invention is to replace the top door structure at the front end of the top rod 3 with a rotating part 4 rotatably connected to the front end of the top rod 3, thereby reducing the friction between the top rod 3 and the door body 200 and reducing the noise between the top rod 3 and the door body 200. The friction between the rotating part 4 and the door body 200 is reduced, making the rotation of the door body 200 smoother.

[0039] In one embodiment, see Figure 1 and Figure 2The rotating member 4 includes a wheel body and a sleeve, and the sleeve is sleeved on the wheel body.

[0040] It should be noted that, in order to make the rotating member 4 have a greater hardness, so as to reduce the energy loss of the rotating member 4 during the process of opening the door body 200, the rotating member 4 is configured as a wheel body and a sleeve (not shown), that is, Figure 2 and Figure 3 The rotating member 4 structure shown is wrapped with a rubber sleeve, so that the rotating member 4 has less friction when pushing the door body 200, further reducing the energy loss of the automatic door opening device 100.

[0041] In one embodiment, please continue to refer to Figure 1 and Figure 2 The material of the rotating part 4 is set to rubber.

[0042] Furthermore, according to the previous embodiment, a sheath is wrapped around the outside of the wheel body to reduce the friction between the rotating part 4 and the door body 200. In this embodiment, the rotating part 4 is made of rubber material as a whole, which not only reduces the friction generated by the contact between the rotating part 4 and the door body 200, but also allows the rotating part 4 to be integrally formed, thereby reducing the manufacturing steps of the rotating part 4 and saving the manufacturing time of the automatic door opening device 100.

[0043] In one embodiment, see Figure 2 and Figure 4 The push rod 3 includes a sliding portion 31 and a transmission portion 32 connected to each other, the transmission portion 32 is transmission-connected to the driving assembly 2, and the sliding portion 31 is slidingly connected to the base 1.

[0044] Optionally, a sliding track may be installed on the base 1, and the sliding part 31 may be set in the form of a slider, and a sliding connection may be achieved by sliding the slider on the sliding track. Alternatively, a rolling bearing may be set between the base 1 and the sliding part 31 to achieve a sliding connection. Alternatively, a sliding groove may be set on either the sliding part 31 or the base 1, and a guide protrusion adapted to the sliding groove may be set on the other, so that a sliding fit is formed between the sliding groove and the guide protrusion.

[0045] In one embodiment, please continue to refer to Figure 2 and Figure 4 A sliding groove 311 is provided on the back side of the sliding portion 31 , and a guide protrusion 11 is provided on the base 1 corresponding to the sliding groove 311 . Driven by the driving assembly 2 , the push rod 3 can slide along the extension direction of the guide protrusion 11 .

[0046] Specifically, the above description shows that the push rod 3 has a tendency to move toward the outside of the base 1 under the drive of the drive assembly 2. In this embodiment, a guide protrusion 11 is provided on the base 1, and a slide groove 311 is provided on the back side of the sliding portion 31 (i.e., the side of the sliding portion 31 facing the base 1). That is, the movement of the push rod 3 relative to the base 1 is through the sliding cooperation between the sliding portion 31 and the guide protrusion 11. In this way, the movement path of the push rod 3 can be limited, so that the push rod 3 moves along the extension direction of the guide protrusion 11, so that the push rod 3 can stably push the door body 200 open, making the force on the door body 200 more stable. The transmission portion 32 and the drive assembly 2 can be gear transmission, pulley transmission, or hinge transmission, which is not specifically limited here.

[0047] In one embodiment, see Figure 2 and Figure 3 The driving assembly 2 includes a driving device 21 and a gear transmission mechanism 22 that are transmission-connected, and the transmission part 32 includes a rack 321 that meshes with the gear transmission mechanism 22.

[0048] Furthermore, the drive assembly 2 includes a drive device 21 and a gear transmission mechanism 22. The drive device 21 drives the gear transmission mechanism 22 to rotate, and the gear transmission mechanism 22 then engages with the transmission part 32, thereby driving the push rod 3 to slide. The transmission part 32 is provided with a rack 321 on the side close to the gear transmission mechanism 22 for engaging with the gear transmission mechanism 22. The gear transmission mechanism 22 can have only one gear, two gears, or multiple gears.

[0049] In one embodiment, see Figure 2 and Figure 5 The gear transmission mechanism 22 includes a final gear 221, and the final gear 221 includes an internal gear 221a and an external tooth plate 221b fixed to the internal gear 221a. The tooth portion of the external tooth plate 221b extends out from the outer periphery of the internal gear 221a. The internal gear 221a is transmission-connected to the driving device 21, and the external tooth plate 221b is engaged with the rack 321.

[0050] Specifically, the final gear 221 is the gear at the end of the transmission relationship with the driving device 21. The final gear 221 includes an internal gear 221a and an external gear plate 221b connected to each other, and the internal gear 221a and the external gear plate 221b rotate along the same axis, wherein the internal gear 221a is a conventional circular gear structure, and the external gear plate 221b is roughly semicircular, and the external gear plate 221b partially extends out of the outer periphery of the internal gear 221a. There is a transmission relationship between the internal gear 221a and the driving device 21, which can be direct transmission or indirect transmission, and the external gear plate 221b is engaged with the rack 321, and drives the push rod 3 to slide through the external gear plate 221b.

[0051] In one embodiment, see Figure 2 The transmission part 32 is arranged as an inclined plate, and the push rod 3 has a first position housed in the base 1 and a second position extending from the base 1. When the transmission part 32 is in the first position, the distance between the transmission part 32 and the axis of the internal gear 221a is D1, and when the transmission part 32 is in the second position, the distance between the transmission part 32 and the axis of the internal gear 221a is D2, and D1<D2.

[0052] It should be noted that, in order to achieve a more stable meshing relationship between the transmission portion 32 and the external toothed plate 221b, the transmission portion 32 is configured as an inclined plate. Compared to a straight plate, the inclined plate configuration allows for a larger meshing area between the transmission portion 32 and the external toothed plate 221b, thereby achieving a tighter meshing between the external toothed plate 221b and the rack 321. This increases the force-bearing area between the external toothed plate 221b and the rack 321, thereby enhancing the structural stability between the external toothed plate 221b and the transmission portion 32. The push rod 3 has a first position housed within the base 1 and a second position extending out of the base 1. Given that the transmission portion 32 is configured as an inclined plate, the distance between the transmission portion 32 and the axis of the internal gear 221a continuously changes during its movement along the guide protrusion 11. In this embodiment, the distance between the transmission portion 32 and the axis of the internal gear 221a in the first position is smaller than the distance between the transmission portion 32 and the axis of the internal gear 221a in the second position. Therefore, as the transmission portion 32 gradually extends out of the base 1 , the distance between the transmission portion 32 and the axis of the internal gear 221 a becomes larger and larger.

[0053] In one embodiment, please continue to refer to Figure 2 When the push rod 3 is located at the first position, the outer tooth plate 221b has a third position meshing with the rack 321, and when the push rod 3 is located at the second position, the outer tooth plate 221b has a fourth position meshing with the rack 321. The third position is closer to the axis of the internal gear 221a than the fourth position.

[0054] Specifically, considering that part of the outer tooth plate 221b extends out from the outer periphery of the inner gear 221a, and another part of the outer tooth plate 221b coincides with the inner gear 221a, it should be noted that when the transmission part 32 gradually moves away from the axis of the inner gear 221a, the outer tooth plate 221b gradually rotates to the part extending out from the outer periphery of the inner gear 221a, so that the transmission part 32 and the outer tooth plate 221b are always kept in meshing state.

[0055] In one embodiment, see Figure 3The driving device 21 includes a driving motor 211, and the driving motor 211 includes a motor body 211a and a motor shaft 211b connected to each other. A threaded transmission member 212 is sleeved on the motor shaft 211b. The gear transmission mechanism 22 includes a first gear 222, and the threaded transmission member 212 is transmission-connected to the first gear 222. The first gear 222 is transmission-connected to the last gear 221.

[0056] It should be noted that the driving device 21 drives the threaded transmission member 212 to rotate through the motor shaft 211b, thereby driving the first gear 222 engaged with the threaded transmission member 212 to rotate. The transmission connection between the first gear 222 and the final gear 221 can be direct engagement or transmission through several other gears, wherein the number of other gears can be one, two, or several.

[0057] In one embodiment, see Figure 3 The first gear 222 includes a main gear 222a and a sub gear 222b arranged coaxially. The main gear 222a is engaged with the threaded transmission member 212, and the sub gear 222b is transmission-connected to the final gear 221. The diameter of the main gear 222a is larger than the diameter of the sub gear 222b.

[0058] Optionally, the first gear 222 includes a coaxially arranged main gear 222a and a sub-gear 222b, wherein the main gear 222a and the sub-gear 222b have different diameters, thereby achieving a speed change effect. Considering that the speed at which the push rod 3 pushes the door body 200 to rotate should not be too fast, the main gear 222a is engaged with the threaded transmission member 212, and the sub-gear 222b is transmission-connected to the final gear 221, thereby reducing the speed of the final gear 221. Among them, multiple speed change gears can also be provided between the first gear 222 and the final gear 221 to further reduce the speed of the final gear 221.

[0059] The present invention also proposes a refrigeration device, which includes an automatic door opening device 100. The specific structure of the automatic door opening device 100 refers to the above embodiment. Since the present refrigeration device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0060] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An automatic door opening device, characterized in that: include: base; A drive assembly is mounted on the base; A push rod is movably disposed on the base, the push rod is transmission-connected to the drive assembly, and the push rod can be partially extended from one side of the base under the drive of the drive assembly; Wherein, the end of the push rod is rotatably connected to a rotating member.

2. The automatic door opening device according to claim 1, characterized in that: The rotating member includes a wheel body and a sleeve, and the sleeve is sleeved on the wheel body.

3. The automatic door opening device according to claim 1, wherein: The push rod includes a sliding portion and a transmission portion connected to each other, the transmission portion is transmission-connected to the driving assembly, and the sliding portion is slidably connected to the base.

4. The automatic door opening device according to claim 3, characterized in that: A sliding groove is provided on the back side of the sliding portion, and a guide protrusion is provided on the base corresponding to the sliding groove. Under the drive of the driving assembly, the push rod can slide along the extending direction of the guide protrusion.

5. The automatic door opening device according to claim 4, characterized in that: The driving assembly includes a driving device and a gear transmission mechanism that are transmission-connected, and the transmission part includes a rack meshing with the gear transmission mechanism.

6. The automatic door opening device according to claim 5, characterized in that: The gear transmission mechanism includes a final gear, which includes an internal gear and an external tooth plate fixed to the internal gear, the tooth portion of the external tooth plate extending out of the outer periphery of the internal gear, the internal gear being transmission-connected to the drive device, and the external tooth plate meshing with the rack.

7. The automatic door opening device according to claim 6, characterized in that: The transmission part is arranged as an inclined plate, and the push rod has a first position housed in the base and a second position extending from the base. When the transmission part is in the first position, the distance between the transmission part and the axis of the internal gear is D1, and when the transmission part is in the second position, the distance between the transmission part and the axis of the internal gear is D2, and D1 is less than D2.

8. The automatic door opening device according to claim 7, characterized in that: When the push rod is in the first position, the outer tooth plate has a third position meshing with the rack, and when the push rod is in the second position, the outer tooth plate has a fourth position meshing with the rack, and the third position is closer to the axis of the internal gear than the fourth position.

9. The automatic door opening device according to claim 6, wherein: The driving device includes a driving motor, which includes a motor body and a motor shaft connected to each other. A threaded transmission member is sleeved on the motor shaft. The gear transmission mechanism includes a first gear, the threaded transmission member is transmission-connected to the first gear, and the first gear is transmission-connected to the final gear.

10. The automatic door opening device according to claim 9, characterized in that: The first gear includes a main gear and a sub gear which are coaxially arranged. The main gear is engaged with the threaded transmission member. The sub gear is transmission-connected to the final gear. The diameter of the main gear is larger than that of the sub gear.

11. A refrigeration device, characterized in that: Comprising the automatic door opening device as described in any one of claims 1 to 10.

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