CN112146338B - Height-adjustable rack - Google Patents
Height-adjustable rack Download PDFInfo
- Publication number
- CN112146338B CN112146338B CN201910566897.7A CN201910566897A CN112146338B CN 112146338 B CN112146338 B CN 112146338B CN 201910566897 A CN201910566897 A CN 201910566897A CN 112146338 B CN112146338 B CN 112146338B
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- Prior art keywords
- guide rail
- lower guide
- sliding cavity
- arc
- shaped profile
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Refrigerator Housings (AREA)
Abstract
The invention relates to a height-adjustable rack which comprises a pair of lifting devices, a rack plate and a synchronous mechanism, wherein the two lifting devices are respectively arranged on two sides of the rack plate and are connected through the synchronous mechanism; the lower guide rail is configured to be capable of horizontally sliding along the sliding cavity, the upper guide rail is the same as the sliding cavity in length and can slide up and down in the sliding cavity, and the cam is installed between the upper guide rail and the lower guide rail and is in rolling fit with the upper guide rail and the lower guide rail; the lower guide rail is provided with a pushing structure for pushing the lower guide rail to slide; the shell is also provided with a locking structure for locking the lower guide rail; the object placing plate is connected with the upper guide rail and keeps synchronous motion with the upper guide rail, and the synchronizing mechanism is connected with the lower guide rails of the two lifting devices and keeps the two lower guide rails in synchronous motion. The rack of the invention has adjustable height, simple structure, good bearing effect and low manufacturing cost.
Description
Technical Field
The invention relates to a household appliance, in particular to a rack with adjustable height.
Background
In order to improve the utilization rate of the internal space of the existing household refrigerator, a special rack is generally arranged in the refrigerator, the rack of the common refrigerator is generally clamped in an inner container of the refrigerator in a pluggable mode, the height of the rack is determined by the position of a clamping groove and cannot be adjusted, so that under certain conditions, articles cannot be smoothly placed on the rack due to the fact that the reserved height of the rack is not enough, and the situation of space waste can occur if the rack is removed. At present, some high-end refrigerators are provided with a liftable electric rack in an inner container, and the electric rack is provided with the following application numbers: 201611037914.0 discloses a synchronous lifting system for refrigerator racks, which comprises: controller, rack body and two at least elevating system, elevating system includes: the rack body is assembled with the lifting mechanism, the connecting piece is sleeved on the guide rod in a sliding manner, the sliding nut is sleeved on the transmission screw rod, and the motor drives the transmission screw rod to rotate to drive the sliding nut to lift so as to drive the rack body to move along the guide rod; the controller is configured to control the rotation speed and the number of steps of each motor to gradually approach synchronization according to the rotation speed and the number of steps of the corresponding motor fed back by each sensor. Although the problem that the height of the rack is not adjustable is solved, the structure of the electric device is complex, and the inside of the refrigerator is easy to frost, so that the failure of the lifting mechanism is easily caused, the reliability of use is low, the manufacturing cost is high, and the later maintenance is troublesome.
The invention is therefore set forth in this light.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a rack with adjustable height, which can be manually adjusted in height, and has the advantages of simple structure, convenience in use and low manufacturing cost.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
a height-adjustable rack comprises a pair of lifting devices, a rack plate and a synchronizing mechanism, wherein the two lifting devices are respectively arranged at two sides of the rack plate and are connected through the synchronizing mechanism,
the lifting device comprises a shell with a sliding cavity, and a lower guide rail, a cam and an upper guide rail which are arranged in the sliding cavity;
the lower guide rail is configured to be capable of horizontally sliding along the sliding cavity, the upper guide rail is the same as the sliding cavity in length and is configured to be capable of vertically sliding in the sliding cavity, and the cam is installed between the upper guide rail and the lower guide rail and is in rolling fit with the upper guide rail and the lower guide rail;
the lower guide rail is provided with a pushing structure for pushing the lower guide rail to slide; the shell is also provided with a locking structure for locking the lower guide rail;
the object placing plate is connected with the upper guide rail and keeps synchronous motion with the upper guide rail, and the synchronizing mechanism is connected with the lower guide rails of the two lifting devices and keeps the two lower guide rails in synchronous motion.
Furthermore, the rolling surface of the cam is a tooth-shaped surface, the lower surface of the upper guide rail and the upper surface of the lower guide rail are respectively provided with teeth matched with the tooth-shaped surface, and at least one pair of cams are arranged between the upper guide rail and the lower guide rail and are arranged back and forth along the length direction of the sliding cavity.
Further, the profile surface of the cam comprises a first arc-shaped profile, a second arc-shaped profile and a transition connecting profile; the radius of the first arc-shaped profile is larger than that of the second arc-shaped profile, and the distance between the centers of the first arc-shaped profile and the second arc-shaped profile is larger than the sum of the radii of the first arc-shaped profile and the second arc-shaped profile; the transition connection profile is in tangential connection with the first arc-shaped profile and the second arc-shaped profile.
Furthermore, the locking structure is an elastic component arranged on the shell, one end of the elastic component is connected with the shell, the other end of the elastic component is a free end, the free end is provided with a buckle, one side of the lower guide rail is provided with a plurality of positioning holes which are horizontally arranged, and the buckle can be clamped into the positioning holes to form positioning fit; the back of the buckle is provided with a handle, the elastic component can be deformed by pushing the handle, and the buckle is separated from the positioning hole.
Further, a return spring is further installed at one end of the lower guide rail, and the return spring is located in the sliding cavity and used for enabling the lower guide rail to return to one side of the sliding cavity.
Further, one side of sliding cavity is equipped with a bar hole, promote the structure for setting up the protruding piece in bottom rail one side, protruding piece stretches out to the outside of sliding cavity through the bar hole, can make the bottom rail slide in sliding cavity through promoting protruding piece.
Furthermore, a clamping groove is formed at the upper end part of the upper guide rail, the edge of the shelf plate is inserted into the clamping groove, and the edge of the shelf plate and the clamping groove are in interference fit.
Furthermore, the synchronizing mechanism is a rigid rod, and the lower guide rails of the two lifting devices are respectively provided with a slot which is connected with the rigid rod in an inserting way.
Furthermore, one end of the lower guide rail is bent upwards to form an L-shaped structure, and the rigid rod is inserted at the upper end of the lower guide rail.
Furthermore, a through hole for the rigid rod to pass through is formed in one side of the shell, and when the lower guide rail slides, the rigid rod slides in the through hole.
After the technical scheme of the invention is adopted, the following beneficial effects are brought:
the height-adjustable rack provided by the invention has the advantages that the height of the rack is adjusted in a manual adjusting mode, no electric appliance element is used, the reliability is good, the manufacturing cost is low, the space in the refrigerator can be fully utilized, the space utilization rate in the refrigerator is improved, the structure is simple, the bearing capacity is good, the adjusting process is purely manual operation, the operation is flexible and convenient, the installation and maintenance cost is low, meanwhile, the lifting device is installed in a manner of being attached to the inner container wall, the attractive effect of the internal structure is not influenced, and the rack is simple and practical.
Drawings
FIG. 1: structure of the invention;
FIG. 2: the structure of the lifting device of the invention;
FIG. 3: is an exploded view of fig. 2;
FIG. 4: a left side view of the lifting device of the present invention;
FIG. 5: is a cross-sectional view taken along plane a-a of fig. 4;
FIG. 6: a top view of the lifting device of the present invention;
FIG. 7: is a cross-sectional view taken along plane B-B of fig. 6;
FIG. 8: front view of the cam of the present invention;
FIG. 9: the invention relates to a matching schematic diagram of an inner container and a rack of a refrigerator;
wherein: 1. the shelf board 2, the lifting device 3, the rigid rod 4, the inner container 21, the housing 22, the lower guide rail 23, the upper guide rail 24, the cam 25, the locking structure 26, the return spring 27, the support rod 21a, the sliding cavity 22a, the pushing structure 22b, the positioning hole 24a, the first arc-shaped profile 24b, the second arc-shaped profile 24c, the transition connecting profile 24d, the protruding shaft 41 and the support structure.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, a height-adjustable rack comprises a pair of lifting devices 2, a rack 1 and a synchronizing mechanism, wherein the two lifting devices 2 are symmetrically installed at two sides of the rack 1 and drive the rack 1 to lift, and the two lifting devices 2 are connected by the synchronizing mechanism to ensure the synchronous movement of the two lifting devices. The shelf 1 is a square plate, and the lifting device 2 includes a rectangular housing 21, a lower guide rail 22, a cam 24, an upper guide rail 23 and a return spring 26.
An elongated slide chamber 21a is formed inside the housing 21, and at least the upper end of the slide chamber 21a is open. The lower guide rail 22 is installed at the bottom of the slide chamber 21a and can slide horizontally in the slide chamber 21a, and the width of the lower guide rail 22 is the same as that of the slide chamber 21a, so that the lower guide rail 22 can only slide back and forth in the slide chamber 21a, i.e., along the length of the slide chamber 21 a. Preferably, the bottom of the lower guide rail 22 is a T-shaped groove, and the bottom of the sliding cavity 21a is a T-shaped rail, which are matched with each other.
The upper guide rail 23 is located above the lower guide rail 22, the upper guide rail 23 is in limit fit with the sliding cavity 21a, so that the upper guide rail 23 cannot slide back and forth relative to the sliding cavity 21a and can only slide up and down, the limit fit is realized in a manner that the length of the upper guide rail 23 is the same as that of the sliding cavity 21a, and the front end and the rear end of the upper guide rail 23 are respectively in contact with the inner wall of the sliding cavity 21a so as to limit the upper guide rail 23 to slide relative to the sliding cavity 21a in the front-rear direction.
The cam 24 is installed between the upper guide rail 23 and the lower guide rail 22, the cam 24 is in rolling fit with the upper guide rail 23 and the lower guide rail 22, the cam 24 plays a role in supporting the upper guide rail 23, when the cam 24 rotates, the distance between the upper guide rail 23 and the lower guide rail 22 can be changed, the upper guide rail 23 moves up and down, and the lifting function is achieved.
The lower guide rail 22 is provided with a pushing structure 22a capable of pushing the lower guide rail 22 to slide. The pushing structure 22a is pushed by a human hand, when the human hand pushes the lower guide rail 22 to slide, the cam 24 rotates and enables the upper guide rail 23 to move in the vertical direction, the object placing plate 1 is connected with the upper guide rail 23 and keeps synchronous movement with the upper guide rail 23, and the object placing plate 1 can be located at different heights by adjusting the position of the lower guide rail 22.
Specifically, promote structure 22a for setting up the protruding piece in lower guideway 22 one side, be equipped with anti-skidding stripe on the surface of protruding piece, one side of sliding cavity 21a is equipped with a bar hole 21b, the protruding piece stretches out to the outside of sliding cavity 21a through bar hole 21b, and the protruding piece can slide in bar hole 21b, can make lower guideway 22 slide in sliding cavity 21a through promoting the protruding piece.
As shown in connection with fig. 4 and 5. In order to prevent the position of the storage plate 1 from changing after the action force of the human hand is removed, the housing 21 is further provided with a locking structure 25 for locking the lower guide rail 22, one side of the lower guide rail 22 is provided with a plurality of positioning holes 22b which are horizontally arranged, the locking structure 25 is an elastic member arranged on the housing 21, one end of the elastic member is connected with the housing 21, and the other end of the elastic member is a free end and can move relative to the housing 21. A snap is provided at the free end of the elastic member, said snap being snapped into the positioning hole 22b and forming a positioning fit. A pull handle is provided on the back of the clip, and the elastic member is deformed by pushing the pull handle to separate the clip from the positioning hole 22 b.
Referring to fig. 6 and 7, the return spring 26 is mounted at one end of the lower rail 22 and located at the rear side of the sliding cavity 21a, and is used for pushing the lower rail 22 to return, one end of the return spring 26 abuts against the inner wall of the sliding cavity 21a, and the other end abuts against the end of the lower rail 22, in order to prevent the return spring 26 from twisting, a support rod 27 is further sleeved inside the return spring 26, when the return spring 26 is compressed, the support rod 27 can extend into the lower rail 22, the return spring 26 pushes the lower rail 22 to one side in front of the sliding cavity 21a by virtue of its own elasticity, so that the lower rail 22 is pushed by a human hand to lift the shelf board 1, and the return spring 26 pushes the lower rail 22 to lower the shelf board 1.
Preferably, the rolling surface of the cam 24 is a toothed surface, the lower surface of the upper rail 23 and the upper surface of the lower rail 22 are respectively provided with teeth matched with the toothed surface, and at least one pair of cams 24 is arranged between the upper rail 23 and the lower rail 22 and arranged back and forth along the length direction of the sliding cavity 21 a.
As shown in fig. 8, the profile surface of the cam 24 includes a first curved profile 24a, a second curved profile 24b, and a transition profile 24 c; the radius of the first arc-shaped profile 24a is larger than that of the second arc-shaped profile 24b, and the distance between the centers of the two is larger than the sum of the radii of the two; the transition connection profile 24c is tangentially connected to the first and second curved profiles 24a, 24 b. A protruding shaft 24d is further arranged in the center of the first arc-shaped profile 24a, and the inner wall of the sliding cavity 21a is provided with a jack and is in plug fit with the protruding shaft 24d, so that the cam 24 can only rotate along the protruding shaft 24 d.
Preferably, a clamping groove is formed at the upper end of the upper guide rail 23, the clamping groove is U-shaped, the edge of the shelf board 1 is inserted into the clamping groove, and the two are in interference fit.
The synchronous mechanism is a rigid rod 3, the lower guide rails 22 of the two lifting devices 2 are respectively provided with a slot and are connected with the rigid rod 3 in an inserting way, and the two lower guide rails 22 are always kept in synchronous motion through the rigid rod 3.
Preferably, one end of the lower guide rail 22 is bent upwards to form an L-shaped structure, the rigid rod 3 is inserted into the upper end of the lower guide rail 22 and abuts against the lower side of the storage tray 1, a through hole for the rigid rod 3 to pass through is formed in one side of the housing 21, and the rigid rod 3 slides in the through hole when the lower guide rail 22 slides.
As shown in fig. 9, the refrigerator is provided with the height-adjustable rack, the refrigerator further comprises an inner container 4, a supporting structure 41 is arranged on a side wall of the inner container 4, the housing 21 is fixedly clamped on the supporting structure 41, specifically, the supporting structure 41 is a supporting rib arranged horizontally, and a clamping structure is arranged at the bottom of the housing 21 and is in clamping fit with the supporting rib.
Claims (10)
1. The utility model provides a but height-adjusting's rack, includes a pair of elevating gear, rack and lazytongs, two elevating gear install respectively in the both sides of rack to connect through lazytongs, its characterized in that:
the lifting device comprises a shell with a sliding cavity, and a lower guide rail, a cam and an upper guide rail which are arranged in the sliding cavity;
the lower guide rail is configured to be capable of horizontally sliding along the sliding cavity, the upper guide rail is the same as the sliding cavity in length and is configured to be capable of vertically sliding in the sliding cavity, the cam is installed between the upper guide rail and the lower guide rail and is in rolling fit with the upper guide rail and the lower guide rail, the rolling surface of the cam is a tooth-shaped surface, and the lower surface of the upper guide rail and the upper surface of the lower guide rail are respectively provided with teeth matched with the tooth-shaped surface;
the lower guide rail is provided with a pushing structure for pushing the lower guide rail to slide; the shell is also provided with a locking structure for locking the lower guide rail;
the object placing plate is connected with the upper guide rail and keeps synchronous motion with the upper guide rail, and the synchronizing mechanism is connected with the lower guide rails of the two lifting devices and keeps the two lower guide rails in synchronous motion.
2. An adjustable height rack according to claim 1 wherein: at least one pair of cams is arranged between the upper guide rail and the lower guide rail and is arranged back and forth along the length direction of the sliding cavity.
3. An adjustable height rack according to claim 1 or 2 wherein: the profile surface of the cam comprises a first arc-shaped profile, a second arc-shaped profile and a transitional connecting profile; the radius of the first arc-shaped profile is larger than that of the second arc-shaped profile, and the distance between the centers of the first arc-shaped profile and the second arc-shaped profile is larger than the sum of the radii of the first arc-shaped profile and the second arc-shaped profile; the transition connection profile is in tangential connection with the first arc-shaped profile and the second arc-shaped profile.
4. An adjustable height rack according to claim 1 wherein: the locking structure is an elastic component arranged on the shell, one end of the elastic component is connected with the shell, the other end of the elastic component is a free end, the free end is provided with a buckle, one side of the lower guide rail is provided with a plurality of positioning holes which are horizontally arranged, and the buckle can be clamped into the positioning holes to form positioning fit; the back of the buckle is provided with a handle, the elastic component can be deformed by pushing the handle, and the buckle is separated from the positioning hole.
5. An adjustable height rack according to claim 1 wherein: and one end of the lower guide rail is also provided with a return spring, and the return spring is positioned in the sliding cavity and used for returning the lower guide rail to one side of the sliding cavity.
6. An adjustable height rack according to claim 1 wherein: one side of sliding cavity is equipped with a bar hole, promote the structure for setting up the protruding piece in bottom rail one side, protruding piece stretches out to the outside of sliding cavity through the bar hole, can make the bottom rail slide in sliding cavity through promoting protruding piece.
7. An adjustable height rack according to claim 1 wherein: the upper end of the upper guide rail forms a clamping groove, the edge of the shelf is inserted into the clamping groove, and the edge of the shelf and the clamping groove are in interference fit.
8. An adjustable height rack according to claim 1 wherein: the synchronous mechanism is a rigid rod, and the lower guide rails of the two lifting devices are respectively provided with a slot which is connected with the rigid rod in an inserting way.
9. An adjustable height rack according to claim 8 wherein: one end of the lower guide rail is bent upwards to form an L-shaped structure, and the rigid rod is inserted in the upper end of the lower guide rail.
10. An adjustable height rack according to claim 8 wherein: and a through hole for the rigid rod to pass through is formed in one side of the shell, and the rigid rod slides in the through hole when the lower guide rail slides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910566897.7A CN112146338B (en) | 2019-06-27 | 2019-06-27 | Height-adjustable rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910566897.7A CN112146338B (en) | 2019-06-27 | 2019-06-27 | Height-adjustable rack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112146338A CN112146338A (en) | 2020-12-29 |
| CN112146338B true CN112146338B (en) | 2022-03-22 |
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ID=73868700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910566897.7A Active CN112146338B (en) | 2019-06-27 | 2019-06-27 | Height-adjustable rack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112146338B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101711334A (en) * | 2007-04-20 | 2010-05-19 | Lg电子株式会社 | Structure for modifying height of shelf and refrigerator having the same |
| WO2010091949A2 (en) * | 2009-02-13 | 2010-08-19 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerator with height-adjustable shelf for refrigerated goods |
| CN201583099U (en) * | 2009-12-03 | 2010-09-15 | 苏州三星电子有限公司 | Lifting adjustment type shelf of refrigerator |
| CN103153136A (en) * | 2010-07-15 | 2013-06-12 | Bsh博世和西门子家用电器有限公司 | Refrigeration device, in particular domestic refrigeration device |
| CN106196866A (en) * | 2014-08-12 | 2016-12-07 | Lg电子株式会社 | Refrigerator |
| CN106595212A (en) * | 2016-12-30 | 2017-04-26 | 青岛海尔股份有限公司 | Drawer assembly and refrigerator comprising same |
| CN108019996A (en) * | 2016-11-04 | 2018-05-11 | 三星电子株式会社 | Refrigerator |
| CN109539682A (en) * | 2019-01-28 | 2019-03-29 | 合肥华凌股份有限公司 | Rack unit and refrigerator with it |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101618128B1 (en) * | 2014-04-16 | 2016-05-04 | 엘지전자 주식회사 | Refrigerator |
-
2019
- 2019-06-27 CN CN201910566897.7A patent/CN112146338B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101711334A (en) * | 2007-04-20 | 2010-05-19 | Lg电子株式会社 | Structure for modifying height of shelf and refrigerator having the same |
| WO2010091949A2 (en) * | 2009-02-13 | 2010-08-19 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerator with height-adjustable shelf for refrigerated goods |
| CN201583099U (en) * | 2009-12-03 | 2010-09-15 | 苏州三星电子有限公司 | Lifting adjustment type shelf of refrigerator |
| CN103153136A (en) * | 2010-07-15 | 2013-06-12 | Bsh博世和西门子家用电器有限公司 | Refrigeration device, in particular domestic refrigeration device |
| CN106196866A (en) * | 2014-08-12 | 2016-12-07 | Lg电子株式会社 | Refrigerator |
| CN108019996A (en) * | 2016-11-04 | 2018-05-11 | 三星电子株式会社 | Refrigerator |
| CN106595212A (en) * | 2016-12-30 | 2017-04-26 | 青岛海尔股份有限公司 | Drawer assembly and refrigerator comprising same |
| CN109539682A (en) * | 2019-01-28 | 2019-03-29 | 合肥华凌股份有限公司 | Rack unit and refrigerator with it |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112146338A (en) | 2020-12-29 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20211229 Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant after: Qingdao Haier Molds Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: Qingdao Haier Molds Co.,Ltd. Applicant before: Haier Smart Home Co., Ltd. |
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Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee after: Kaos Mold (Qingdao) Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee before: Qingdao Haier Molds Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |