Commercial freezing display cabinet with night curtain

Abstract

The utility model belongs to the technical field of refrigerators, and relates to a commercial refrigeration display cabinet with a night curtain, which comprises a cabinet body, a glass door body and a night curtain device arranged above the rear side of the cabinet body, and the night curtain device comprises a night curtain box, a rotating shaft and an electric driving mechanism; the night curtain box is provided with a front opening located above the rear cabinet opening. The rotating shaft is rotationally connected into the night curtain box and is arranged in the left-right direction of the cabinet body; one end of the night curtain extends out of the front opening of the night curtain box; the electric driving mechanism is connected with the rotating shaft; when the night curtain is released, the electric driving mechanism drives the rotating shaft to rotate so that the night curtain can be disengaged from the rotating shaft, meanwhile, a user pulls the night curtain towards the front side of the cabinet body till the night curtain covers the glass door body, and the rotating shaft stops rotating. When the night curtain is folded, the electric driving mechanism drives the rotating shaft to rotate reversely so as to drive the night curtain to be wound on the rotating shaft till the outer end of the night curtain falls on the top face of the rear cabinet opening, and the rotating shaft stops rotating. According to the utility model, the night curtain is integrated on the commercial refrigeration display cabinet, and the folding and unfolding process of the night curtain is simple and convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of refrigerator, specifically relates to a commercial refrigeration display cabinet with night curtain. BACKGROUND

[0002] The commercial refrigeration display cabinet usually comprises a cabinet body and a glass door body, the cabinet body has a storage cavity with a top opening, and the glass door body is connected to the top opening to open or close the storage cavity. The commercial refrigeration display cabinet displays the goods in the cabinet through the glass door body for customers to select. In a high-temperature environment, in order to maintain the low temperature in the cabinet, the compressor of the commercial refrigeration display cabinet must be continuously operated to prevent the goods in the cabinet from melting. However, the operation of the compressor is the main part of the power consumption of the commercial refrigeration display cabinet, so the merchant usually covers a night curtain above the glass door body, and the night curtain is usually a thick cotton quilt to slow down the loss of cold in the cabinet and reduce the working load of the compressor. However, the use of the night curtain affects the appearance of the commercial refrigeration display cabinet, and customers have to move the night curtain frequently when selecting the goods in the cabinet, and the night curtain has no place to store or is inconvenient to store when not in use. SUMMARY

[0003] In view of the deficiencies in the related art, the utility model provides a commercial refrigeration display cabinet with a night curtain, aiming to solve the technical problems mentioned in the background art.

[0004] The utility model provides a commercial refrigeration display cabinet with a night curtain, comprising a cabinet body, a glass door body connected to the top opening of the cabinet body, and a night curtain device installed above the rear side of the cabinet body, wherein the night curtain device comprises:

[0005] A night curtain box has an accommodation cavity inside, and the accommodation cavity has a front opening located above the rear cabinet opening of the cabinet body;

[0006] A rotating shaft is rotatably connected to the accommodation cavity of the night curtain box and is arranged along the left-right direction of the cabinet body. A night curtain is wound on the rotating shaft, and one end of the night curtain is a retractable end that extends out of the front opening of the night curtain box;

[0007] An electric drive mechanism is connected to the rotating shaft and used to drive the rotating shaft to rotate;

[0008] When the night curtain is released, the rotating shaft rotates under the drive of the electric drive mechanism to make the night curtain detach from the rotating shaft, and at the same time, the user pulls the retractable end of the night curtain to the front side of the cabinet body until the night curtain covers the entire glass door body. At this time, the electric drive mechanism stops to make the rotating shaft stop rotating. When the night curtain is retracted, the rotating shaft reverses under the drive of the electric drive mechanism to drive the night curtain to wind on the rotating shaft until the retractable end of the night curtain falls on the top surface of the rear cabinet opening of the cabinet body. At this time, the electric drive mechanism stops to make the rotating shaft stop rotating.

[0009] In some embodiments, the rotating shaft is a hollow structure, and the first transmission sleeve and the second transmission sleeve are respectively inserted into two ends of the rotating shaft and are respectively rotatably connected to the left and right side walls of the accommodating cavity; the electric drive mechanism comprises a motor, a motor control board and a retractable key; the retractable key is installed on one side of the outer wall of the night curtain box; the motor control board is installed in the accommodating cavity of the night curtain box; the motor is arranged in the inner cavity of the rotating shaft, and the output shaft of the motor is coaxially arranged with the rotating shaft; the first limiting shaft is connected to one end of the motor away from the output shaft, the first limiting shaft penetrates through the first transmission sleeve and is connected to the side wall of the accommodating cavity, and the first transmission sleeve is rotatably connected to the first limiting shaft; one end of the motor output shaft is connected to a transmission block, and the transmission block is connected to the rotating shaft; the motor control board is electrically connected to the retractable key, and the motor control board is communicatively connected to the motor.

[0010] In some embodiments, a plurality of limiting ribs extending in the axial direction are protruded on the inner cavity wall of the rotating shaft, and a plurality of limiting grooves matched with the limiting ribs are arranged on the outer walls of the first transmission sleeve, the second transmission sleeve and the transmission block.

[0011] In some embodiments, the second transmission sleeve and the side wall of the accommodating cavity are provided with an end cover and a second limiting shaft, one end of the second limiting shaft is inserted into the second transmission sleeve and is rotatably connected thereto, the other end of the second limiting shaft is inserted into the end cover, the end cover is connected to the side wall of the accommodating cavity; the first transmission sleeve and the side wall of the accommodating cavity are also provided with an end cover, and one end of the first limiting shaft away from the motor is inserted into the end cover.

[0012] The utility model provides a kind of commercial refrigeration display cabinet with night curtain, including cabinet, glass door body connected to the top opening of cabinet, night curtain device installed on the upper rear side of cabinet;Wherein, night curtain device includes:

[0013] Night curtain box, its inside has accommodating cavity, and accommodating cavity has front opening, and front opening is located above the rear cabinet opening of cabinet;

[0014] Rotating shaft is rotatably connected in the accommodating cavity of night curtain box, and rotating shaft is arranged along the left and right direction of cabinet;Night curtain is wound on rotating shaft, and one end of night curtain is retractable end, and retractable end extends out of the front opening of night curtain box;

[0015] Spring driving mechanism is connected with rotating shaft, for driving rotating shaft to rotate;

[0016] When the night curtain is released, the user pulls the release end of the night curtain to the front side of the cabinet body against the spring force of the spring driving mechanism, drives the rotating shaft to rotate to make the night curtain off the rotating shaft, until the night curtain covers the entire glass door body, the user no longer exerts force, at this time the spring driving mechanism is locked and the rotating shaft is stopped; when the night curtain is rolled up, the user pulls the release end of the night curtain to unlock the spring driving mechanism, the user no longer exerts force, the rotating shaft is reversed under the restoring spring force of the spring driving mechanism, drives the night curtain to wind up to the rotating shaft, until the release end of the night curtain falls on the top surface of the rear cabinet opening of the cabinet body, at this time the spring driving mechanism is reset and the rotating shaft is stopped.

[0017] In some embodiments, the rotating shaft is a hollow structure, and the first rotating sleeve and the second rotating sleeve are respectively inserted into the two ends of the rotating shaft and are respectively rotatably connected to the left and right side walls of the accommodating cavity; the spring driving mechanism comprises a main spring and a self-locking assembly; the main spring is arranged in the inner cavity of the rotating shaft, and the two ends of the main spring are respectively connected with a first limiting rod and a driving block; the first limiting rod penetrates through the first rotating sleeve and is connected to the side wall of the accommodating cavity, and the first rotating sleeve is rotatably connected to the first limiting rod; the driving block is connected to the rotating shaft; the self-locking assembly comprises a locking shaft, a ball, a second limiting rod and a second end cover; one end of the second limiting rod is inserted into the second rotating sleeve and is rotatably connected thereto, and the other end of the second limiting rod is inserted into the second end cover; the second end cover is connected to the side wall of the accommodating cavity; the locking shaft is connected to the end of the second limiting rod inserted into the second rotating sleeve, and the second rotating sleeve is rotatably connected to the locking shaft; a slide groove is recessed on the outer wall of the locking shaft, and the slide groove comprises two main slides oppositely arranged, a plurality of connecting slides communicating the two main slides, and a locking portion at one end of the connecting slide; an axially extending slide groove is recessed on the inner wall of the second rotating sleeve, and the ball is accommodated between the slide groove and the slide groove; when the rotating shaft rotates, the ball is rolled in one main slide through the second rotating sleeve; when the rotating shaft stops, the ball enters the connecting slide and rolls to the locking portion; when the rotating shaft rotates again, the ball is rolled in another main slide through the second rotating sleeve and away from the locking portion.

[0018] In some embodiments, a plurality of axially extending limiting ribs are protruded on the inner cavity wall of the rotating shaft, and a plurality of limiting grooves matched with the limiting ribs are arranged on the outer walls of the first rotating sleeve, the second rotating sleeve and the driving block.

[0019] In some embodiments, the spring driving mechanism further comprises a pre-tightening assembly, the pre-tightening assembly comprising a pre-tightening spring, a pre-tightening shaft, a first end cover and a cover plate; the first end cover is connected with the side wall of the accommodating cavity, and the first end cover is recessed with an accommodating groove; the pre-tightening spring is installed in the accommodating groove and is in pressure connection with the side wall of the accommodating groove; the first limiting rod is inserted into the accommodating groove at the end away from the main spring; the pre-tightening shaft is located in the accommodating groove and is connected with the first limiting rod, the outer wall of the pre-tightening shaft is recessed with a pre-tightening groove, and the two ends of the pre-tightening spring are pressed on the two side walls of the pre-tightening groove; and the cover plate is located on the side of the accommodating groove away from the first limiting rod and is connected with the first end cover, so as to limit the pre-tightening spring in the accommodating groove.

[0020] In some embodiments, the night curtain box is provided with an inspection opening at the corresponding cover plate, and an inspection cover is installed on the outer wall of the night curtain box corresponding to the inspection opening.

[0021] In some embodiments, the night curtain device further comprises a guide roller, the guide roller being rotatably connected in the accommodating cavity of the night curtain box, the guide roller being arranged along the left-right direction of the cabinet and being located below the rotating shaft, so that the night curtain extends out of the front opening of the night curtain box after passing through the guide roller.

[0022] In some embodiments, the night curtain box comprises two side frames arranged oppositely, a front panel connected between the front sides of the two side frames, and a rear panel connected between the rear sides of the two side frames, so that the accommodating cavity is formed in the night curtain box, and the front opening is formed between the lower part of the front panel and the lower part of the rear panel; the lower parts of the two side frames are respectively connected to the left and right ends of the upper part of the rear side of the cabinet; and the rotating shaft is rotatably connected between the two side frames.

[0023] In some embodiments, the outer wall surface of the night curtain box facing the front side of the cabinet is provided with an advertising sticking area.

[0024] In some embodiments, a handle shaft is wrapped in the winding end of the night curtain.

[0025] Based on the above technical solutions, the commercial refrigeration display cabinet with a night curtain provided in the embodiments of the present application solves the problem of inconvenient storage of the night curtain, realizes the integrated integration of the night curtain on the commercial refrigeration display cabinet, does not affect the appearance of the commercial refrigeration display cabinet, and makes the process of winding and unwinding the night curtain simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0027] Figure 1 FIG. 1 is a perspective view of a commercial refrigeration display cabinet with a night curtain according to the present application;

[0028] Figure 2The utility model discloses a commercial refrigeration display cabinet with night curtain's side view of the utility model discloses a commercial refrigeration display cabinet with night curtain;

[0029] Figure 3 The utility model discloses a commercial refrigeration display cabinet with night curtain's perspective view of night curtain device in the utility model discloses a commercial refrigeration display cabinet with night curtain;

[0030] Figure 4 The utility model discloses a commercial refrigeration display cabinet with night curtain's A-A section view in the utility model discloses a commercial refrigeration display cabinet with night curtain Figure 2 ;

[0031] Figure 5 The utility model discloses a commercial refrigeration display cabinet with night curtain's B place enlarged view in the utility model discloses a commercial refrigeration display cabinet with night curtain Figure 4 ;

[0032] Figure 6 The utility model discloses a commercial refrigeration display cabinet with night curtain's C place enlarged view in the utility model discloses a commercial refrigeration display cabinet with night curtain Figure 4 ;

[0033] Figure 7 The utility model discloses a commercial refrigeration display cabinet with night curtain's D place enlarged view in the utility model discloses a commercial refrigeration display cabinet with night curtain Figure 4 ;

[0034] Figure 8 The utility model discloses a commercial refrigeration display cabinet with night curtain's E-E section view in the utility model discloses a commercial refrigeration display cabinet with night curtain Figure 4 ;

[0035] Figure 9 The utility model discloses a commercial refrigeration display cabinet with night curtain's F place enlarged view in the utility model discloses a commercial refrigeration display cabinet with night curtain Figure 8 ;

[0036] Figure 10 The utility model discloses a commercial refrigeration display cabinet with night curtain's A-A section view in the utility model discloses a commercial refrigeration display cabinet with night curtain Figure 2 ;

[0037] Figure 11 The utility model discloses a commercial refrigeration display cabinet with night curtain's G place enlarged view in the utility model discloses a commercial refrigeration display cabinet with night curtain Figure 10 ;

[0038] Figure 12 The utility model discloses a commercial refrigeration display cabinet with night curtain's H direction view of pre -tightening subassembly in the utility model discloses a commercial refrigeration display cabinet with night curtain Figure 11 ;

[0039] Figure 13 The utility model discloses a commercial refrigeration display cabinet with night curtain's J place enlarged view in the utility model discloses a commercial refrigeration display cabinet with night curtain Figure 10 ;

[0040] Figure 14 The utility model discloses a commercial refrigeration display cabinet with night curtain's perspective view of self -locking shaft in the utility model discloses a commercial refrigeration display cabinet with night curtain Figure 13 ;

[0041] Figure 15 The utility model discloses a commercial refrigeration display cabinet with night curtain's K place enlarged view in the utility model discloses a commercial refrigeration display cabinet with night curtain Figure 10 ;

[0042] Figure 16 The utility model discloses a commercial refrigeration display cabinet with night curtain's M-M section view in the utility model discloses a commercial refrigeration display cabinet with night curtain Figure 10 ;

[0043] Figure 17 The utility model discloses a commercial refrigeration display cabinet with night curtain's N place enlarged view in the utility model discloses a commercial refrigeration display cabinet with night curtain Figure 16 .

[0044] In the figure: 10, cabinet body; 11, rear cabinet opening; 20, glass door body; 30, night curtain device; 40, night curtain box; 401, containing cavity; 402, front opening; 403, access opening; 41, side frame; 42, front panel; 43, rear panel; 44, access cover; 50, rotating shaft; 501, limiting rib; 502, limiting groove; 51, first transmission sleeve; 52, second transmission sleeve; 53, end cover; 54, first limiting shaft; 55, second limiting shaft; 56, motor; 561, output shaft; 57, motor control panel; 58, guide roller; 59, transmission block; 60, night curtain; 61, winding and unwinding end; 62, handle shaft; 71, first rotating sleeve; 72, second rotating sleeve; 721, sliding groove; 81, main spring; 82, first limiting rod; 83, driving block; 84, self-locking assembly; 841, locking shaft; 8411, sliding channel; 8412, main sliding channel; 8413, connecting sliding channel; 8414, locking portion; 842, ball; 843, second limiting rod; 844, second end cover; 85, pre-tightening assembly; 851, pre-tightening spring; 852, pre-tightening shaft; 8521, pre-tightening groove; 853, first end cover; 854, cover plate. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0046] In the description of the present application, it should be understood that the terms "center", "transverse", "longitudinal", "upper", "lower", "top", "bottom", "inner", "outer", "left", "right", "front", "rear", "vertical", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, that is, the orientation is described when a user faces the commercial refrigerated display cabinet, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0047] The terms "first", "second", and the like are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features.

[0048] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "link", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be direct connection, also can be indirectly connected through the intermediate medium, can be two elements inside the intercommunication. For ordinary skilled person in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0049] Embodiment one:

[0050] Reference Figures 1-9 As shown in the utility model provides a kind of commercial refrigeration display cabinet with night curtain, including cabinet 10, glass door body 20 and night curtain device 30.Cabinet 10 has the storage cavity of top opening;Glass door body 20 is connected in top opening, for closing or opening storage cavity;Night curtain device 30 is installed on the upper side of rear cabinet 10.Night curtain device 30 includes night curtain box 40, rotating shaft 50 and electric drive mechanism.

[0051] The inside of night curtain box 40 has accommodating cavity 401;Accommodating cavity 401 has front opening 402, and front opening 402 is located above the rear cabinet opening 11 of cabinet 10.Specifically, night curtain box 40 includes two side frames 41 arranged oppositely, front panel 42 connected between the front side of two side frames 41, rear panel 43 connected between the rear side of two side frames 41, to form accommodating cavity 401 inside night curtain box 40;The upper portion of front panel 42 and the upper portion of rear panel 43 are connected with each other, the lower portion of front panel 42 is higher than the top surface of rear cabinet opening 11 of cabinet 10, and the lower portion of front panel 42 and the lower portion of rear panel 43 form front opening 402;The side frame 41, front panel 42 and rear panel 43 are all detachably connected, so that the night curtain box 40 has dismountable nature;The lower portion of two side frames 41 is connected to the left and right ends of the upper side of rear cabinet 10, so that the night curtain device 30 is connected to the cabinet 10.

[0052] Rotating shaft 50 is rotatably connected in accommodating cavity 401 of night curtain box 40, and rotating shaft 50 is arranged along the left-right direction of cabinet 10.Specifically, rotating shaft 50 is rotatably connected between two side frames 41 of night curtain box 40.Night curtain 60 is wound on rotating shaft 50;One end of night curtain 60 is fixed end, and fixed end is connected to rotating shaft 50;The other end of night curtain 60 is receiving end 61, and receiving end 61 extends out of front opening 402 of night curtain box 40;Specifically, a handle shaft 62 is wrapped in receiving end 61 of night curtain 60, so that the user can pull night curtain 60.

[0053] Electric drive mechanism is connected with rotating shaft 50, for driving rotating shaft 50 to rotate, and can drive rotating shaft 50 to rotate forward or reverse according to preset program.

[0054] Further, when the night curtain 60 is released, the rotating shaft 50 is rotated under the drive of the electric drive mechanism, so that the night curtain 60 is separated from the rotating shaft 50, and the user pulls the release end 61 of the night curtain 60 to the front side of the cabinet 10 at a speed matching the separation of the night curtain 60, until the night curtain 60 covers the entire glass door body 20, and the user releases the night curtain 60, at which time the electric drive mechanism stops to stop the rotating shaft 50. Generally, the night curtain 60 is released during non-business hours to delay the loss of cold in the cabinet, reduce the working load of the compressor, and thus reduce power consumption. When the night curtain 60 is rolled up, the rotating shaft 50 is reversed under the drive of the electric drive mechanism, driving the night curtain 60 covering the glass door body 20 to be wound onto the rotating shaft 50, until the release end 61 of the night curtain 60 naturally falls on the top surface of the rear cabinet opening 11 of the cabinet 10, so as not to block the glass door body 20 and facilitate the release of the night curtain 60 again. At this time, the electric drive mechanism stops to stop the rotating shaft 50, and the night curtain 60 is stored in the accommodation cavity 401 of the night curtain box 40. Generally, during business hours and seasons when the night curtain 60 is not needed, the night curtain 60 is rolled up in the night curtain box 40, without affecting the display of goods in the cabinet, and facilitating customers to view and select goods.

[0055] The above exemplary embodiment realizes the integrated installation of the night curtain 60 on the commercial refrigeration display cabinet through the externally mounted installation of the night curtain device 30 above the rear side of the cabinet 10, and does not affect the appearance of the commercial refrigeration display cabinet. The electric drive mechanism provides driving force for the release and rolling up of the night curtain 60, so that the release and rolling up process of the night curtain 60 is simple and convenient, and thus better meets the release, rolling up, or storage requirements of the night curtain 60 in various scenes such as business hours, non-business hours, and cold seasons.

[0056] Reference Figures 4-9 As shown, in some embodiments, the rotating shaft 50 is a hollow structure, and the first transmission sleeve 51 and the second transmission sleeve 52 are respectively inserted into the two ends of the rotating shaft 50, and the first transmission sleeve 51 and the second transmission sleeve 52 are coaxially arranged with the rotating shaft 50. The first transmission sleeve 51 and the second transmission sleeve 52 are respectively rotationally connected with the left and right side walls of the accommodation cavity 401, so as to realize the rotational connection between the rotating shaft 50 and the night curtain box 40. Further, a plurality of limiting ribs 501 extending in the axial direction are protruded on the inner cavity wall of the rotating shaft 50, and a plurality of limiting grooves 502 matched with the limiting ribs 501 are arranged on the outer wall of the first transmission sleeve 51 and the second transmission sleeve 52; so as to ensure that the rotating shaft 50 and the first transmission sleeve 51 and the second transmission sleeve 52 do not rotate relative to each other.

[0057] The electric drive mechanism includes a motor 56, a motor control board 57, and a winding / unwinding key (not shown). The winding / unwinding key is installed on one side of the outer wall of the night curtain box 40. The motor control board 57 is installed in the accommodation cavity 401 of the night curtain box 40, and the motor control board 57 is internally provided with a preset program, which has set the stroke of the motor 56 when the night curtain 60 is released and wound. The motor 56 is arranged in the inner cavity of the rotating shaft 50, and the output shaft 561 of the motor 56 is coaxially arranged with the rotating shaft 50. The end of the motor 56 away from the output shaft 561 is connected with the first limiting shaft 54, the first limiting shaft 54 penetrates through the first transmission sleeve 51 and is connected with the side wall of the accommodation cavity 401, the first limiting shaft 54 is coaxially arranged with the first transmission sleeve 51, and the first transmission sleeve 51 is rotationally connected with the first limiting shaft 54. One end of the output shaft 561 of the motor 56 is connected with a transmission block 59, and the transmission block 59 is connected with the rotating shaft 50. The outer wall of the transmission block 59 is provided with a limiting groove 502 matched with the limiting rib 501 on the inner cavity wall of the rotating shaft 50, so as to ensure that the transmission block 59 and the rotating shaft 50 cannot relatively rotate. The motor control board 57 is electrically connected with the winding / unwinding key, and the motor control board 57 is communicatively connected with the motor 56. When the user presses the winding / unwinding key, the preset program in the motor control board 57 can send a command to the motor 56 to release or wind the night curtain 60, the motor 56 is started, the output shaft 561 of the motor 56 drives the transmission block 59 to rotate, and then drives the rotating shaft 50, the first transmission sleeve 51 and the second transmission sleeve 52 to rotate synchronously, so as to make the night curtain 60 separate from the rotating shaft 50 or wind on the rotating shaft 50; when the motor 56 reaches the preset release or winding stroke of the night curtain 60, the motor 56 automatically stops, and at this time the night curtain 60 is released or wound in place.

[0058] The above schematic embodiment details the specific arrangement of the electric drive mechanism, which can provide driving force for the winding and unwinding of the night curtain 60 and automatic stop in place, thereby realizing the winding and unwinding function of the night curtain 60.

[0059] Reference Figures 4-6 As shown, in some embodiments, the second transmission sleeve 52 and the side wall of the accommodation cavity 401 are provided with an end cover 53 and a second limiting shaft 55, the second limiting shaft 55 is coaxially arranged with the second transmission sleeve 52, one end of the second limiting shaft 55 is inserted into the second transmission sleeve 52 and rotationally connected therewith, the other end of the second limiting shaft 55 is inserted into the end cover 53 and has a rotation stopping design therebetween, the end cover 53 is connected with the side wall of the accommodation cavity 401, i.e. connected with the side frame 41 of the night curtain box 40. The first transmission sleeve 51 and the side wall of the accommodation cavity 401 are also provided with an end cover 53, one end of the first limiting shaft 54 away from the motor 56 is inserted into the end cover 53 and has a rotation stopping design therebetween. The schematic embodiment ensures the stability of the orientation of the rotating shaft 50 when it reciprocally rotates through the arrangement of the first limiting shaft 54 and the second limiting shaft 55 at both ends of the rotating shaft 50, thereby ensuring the stable and reliable winding and unwinding of the night curtain 60 without deviation.

[0060] Reference Figure 4 ,Figure 9 As shown in the drawings, in some embodiments, the night curtain device 30 further comprises a guide roller 58, which is rotatably connected in the accommodating cavity 401 of the night curtain box 40, and is arranged along the left-right direction of the cabinet body 10 below the rotating shaft 50, so that the night curtain 60 extends out of the front opening 402 of the night curtain box 40 after passing the guide roller 58; thereby making the winding and unwinding of the night curtain 60 more smooth and fast.

[0061] Reference Figure 3 As shown in the drawings, in some embodiments, the night curtain box 40 is provided with an advertising pasting area on the outer wall surface facing the front side of the cabinet body 10; thereby the night curtain device 30 is also endowed with the function of advertising display, better attracting the attention of customers, and enhancing the aesthetic degree of the commercial refrigerated display cabinet and the publicity effect of the goods in the cabinet.

[0062] Embodiment two:

[0063] Reference Figures 1-3 , Figures 10-17 As shown in the drawings, the utility model further provides another kind of commercial refrigerated display cabinet with night curtain, on the basis of embodiment one, replace electric drive mechanism in night curtain device 30 with spring drive mechanism.Spring drive mechanism is connected with rotating shaft 50, for driving rotating shaft 50 rotation.

[0064] Further explanation, when releasing night curtain 60, user overcomes the spring force of spring drive mechanism and pulls the winding and unwinding end 61 of night curtain 60 to the front side of cabinet body 10, drives rotating shaft 50 to rotate to make night curtain 60 from rotating shaft 50, until night curtain 60 covers entire glass door body 20, user no longer exerts force and hands off, at this time, spring drive mechanism is self-locking and rotating shaft 50 is stopped.When winding night curtain 60, user pulls the winding and unwinding end 61 of night curtain 60 to make spring drive mechanism unlock, after spring drive mechanism is unlocked, user no longer exerts force and hands off, rotating shaft 50 is reversed under the reset spring force of spring drive mechanism, drives night curtain 60 covering glass door body 20 to be wound on rotating shaft 50, until the winding and unwinding end 61 of night curtain 60 naturally falls on the top surface of rear cabinet opening 11 of cabinet body 10, at this time, spring drive mechanism resets and rotating shaft 50 is stopped, and night curtain 60 is stored in the accommodating cavity 401 of night curtain box 40.

[0065] The above-mentioned schematic embodiments also realize the integrated type of night curtain 60 on the commercial refrigerated display cabinet; the spring drive mechanism provides driving force for winding night curtain 60 and provides in-place locking for releasing night curtain 60, so that the winding and unwinding process of night curtain 60 is simple and convenient, the configuration and cost of night curtain device 30 are reduced, and the winding and unwinding of night curtain 60 can be realized without consuming electric energy.

[0066] Reference Figures 10-17As shown, in some embodiments, the rotating shaft 50 is a hollow structure, and a first rotating sleeve 71 and a second rotating sleeve 72 are respectively inserted into two ends of the rotating shaft 50, and the first rotating sleeve 71 and the second rotating sleeve 72 are coaxially arranged with the rotating shaft 50; the first rotating sleeve 71 and the second rotating sleeve 72 are respectively rotationally connected with the left and right side walls of the accommodating cavity 401, so as to realize the rotational connection between the rotating shaft 50 and the night curtain box 40. Further, a plurality of axial limiting ribs 501 are protruded on the inner cavity wall of the rotating shaft 50, and a plurality of limiting grooves 502 matched with the limiting ribs 501 are arranged on the outer wall of the first rotating sleeve 71 and the second rotating sleeve 72; thus, the relative rotation between the rotating shaft 50 and the first rotating sleeve 71 and the second rotating sleeve 72 is prevented.

[0067] The spring driving mechanism includes a main spring 81 and a self-locking assembly 84. The main spring 81 is arranged in the inner cavity of the rotating shaft 50, and two ends of the main spring 81 are respectively connected with a first limiting rod 82 and a driving block 83, and the first limiting rod 82 and the driving block 83 are coaxially arranged with the rotating shaft 50. The first limiting rod 82 penetrates through the first rotating sleeve 71 and is connected with the side wall of the accommodating cavity 401, so that one end of the main spring 81 is fixed; the first rotating sleeve 71 is rotationally connected with the first limiting rod 82. The driving block 83 is connected with the rotating shaft 50, and a limiting groove 502 matched with the limiting rib 501 on the inner cavity wall of the rotating shaft 50 is arranged on the outer wall of the driving block 83, so as to prevent the relative rotation between the driving block 83 and the rotating shaft 50. Further, when the user pulls the night curtain 60 to the front side of the cabinet 10, the rotating shaft 50, the first rotating sleeve 71 and the second rotating sleeve 72 are rotated, and the driving block 83 is synchronously rotated against the spring force of the main spring 81, so as to make the night curtain 60 separated from the rotating shaft 50; after the spring driving mechanism is unlocked, the driving block 83 is rotated under the restoring spring force of the main spring 81, and the rotating shaft 50 is synchronously rotated, so as to make the night curtain 60 wound on the rotating shaft 50.

[0068] The self-locking assembly 84 comprises a locking shaft 841, a ball 842, a second limiting rod 843 and a second end cover 844. The second limiting rod 843 and the locking shaft 841 are coaxially arranged with the rotating shaft 50. One end of the second limiting rod 843 is inserted into the second rotating sleeve 72 and rotationally connected with the second rotating sleeve 72. The other end of the second limiting rod 843 is inserted into the second end cover 844, and the second end cover 844 is connected with the side wall of the accommodating cavity 401, i.e., connected with the side frame 41 of the night curtain box 40. The locking shaft 841 is connected with the one end of the second limiting rod 843 inserted into the second rotating sleeve 72, and the second rotating sleeve 72 is rotationally connected with the locking shaft 841. The outer wall of the locking shaft 841 is concavely provided with a slide channel 8411, which comprises two coaxially arranged main slide channels 8412 and a plurality of connecting slide channels 8413 connecting the two main slide channels 8412. One end of each connecting slide channel 8413 is provided with a corner-shaped locking portion 8414. The inner wall of the second rotating sleeve 72 is concavely provided with an axially extending slide groove 721, and the ball 842 is accommodated between the slide channel 8411 and the slide groove 721. The size of the slide groove 721 and the slide channel 8411 is matched with the outer diameter of the ball 842.

[0069] Further, when the rotating shaft 50 rotates, the ball 842 is rolled in one main slide channel 8412 through the second rotating sleeve 72. When the rotating shaft 50 stops rotating, the rotating shaft 50 has a tendency to rotate back due to the restoring spring force of the spring driving mechanism, so that the ball 842 enters the connecting slide channel 8413 and rolls to the corner-shaped locking portion 8414, thereby locking the spring driving mechanism. When the rotating shaft 50 rotates again, the ball 842 is rolled in another main slide channel 8412 through the second rotating sleeve 72 and away from the locking portion 8414.

[0070] The above-mentioned exemplary embodiment details the specific arrangement of the spring driving mechanism, which can provide driving force for winding the night curtain 60 and provide in-place locking for releasing the night curtain 60, thereby realizing the winding and unwinding function of the night curtain 60.

[0071] Reference Figures 10-12As shown, in some embodiments, the spring driving mechanism further comprises a pre-tightening assembly 85 arranged at one end of the first limiting rod 82 exposed from the first rotating sleeve 71; the pre-tightening assembly 85 comprises a pre-tightening spring 851, a pre-tightening shaft 852, a first end cover 853 and a cover plate 854. The first end cover 853 is connected with the side wall of the accommodating cavity 401, i.e. connected with the side frame 41 of the night curtain box 40; a receiving groove is concavely arranged on the first end cover 853, and the groove opening of the receiving groove faces the side frame 41. The pre-tightening spring 851 is installed in the receiving groove and tightly pressed against the side wall of the receiving groove. The one end of the first limiting rod 82 away from the main spring 81 is arranged in the receiving groove and located in the inner ring of the pre-tightening spring 851. The pre-tightening shaft 852 is located in the receiving groove and connected with the first limiting rod 82, and the two have a rotation-stopping design; the pre-tightening shaft 852 is coaxially arranged with the first limiting rod 82; a pre-tightening groove 8521 is concavely arranged on the outer wall of the pre-tightening shaft 852, and the two ends of the pre-tightening spring 851 are tightly pressed against the two side walls of the pre-tightening groove 8521. The cover plate 854 is located at the side of the receiving groove away from the first limiting rod 82 and connected with the first end cover 853, so as to limit the pre-tightening spring 851 in the receiving groove, i.e. the two end faces of the pre-tightening spring 851 in the length direction are clamped between the cover plate 854 and the receiving groove of the end cover 53.

[0072] Further, since the rotating friction resistance between the pre-tightening spring 851 and the receiving groove of the first end cover 853 is large, when the pre-tightening assembly 85 is installed, the pre-tightening spring 851 is not easy to rotate, so that the pre-tightening shaft 852 and the first limiting rod 82 are also not easy to rotate, and thus during the rolling and unrolling of the night curtain 60, the one end of the main spring 81 connected with the driving block 83 will rotate with the rotating shaft 50, while the one end of the main spring 81 connected with the first limiting rod 82 will not rotate. Further, when the pre-tightening assembly 85 is installed, by reasonably setting the positions of the two ends of the pre-tightening spring 851, the rotating friction resistance of the pre-tightening spring 851 is transmitted to the main spring 81 through the pre-tightening shaft 852 and the first limiting rod 82, so that the main spring 81 generates a certain pre-tightening force, i.e. a return spring force, and thus it is ensured that the night curtain 60 can be reliably rolled to the position under the action of the return spring force of the main spring 81 during rolling of the night curtain 60.

[0073] Reference Figures 10-11 As shown, in some embodiments, a maintenance opening 403 is through-provided on the side frame 41 of the night curtain box 40 corresponding to the cover plate 854, and a maintenance cover 44 is detachably installed on the outer wall of the side frame 41 of the night curtain box 40 corresponding to the maintenance opening 403; when the pre-tightening force of the main spring 81 of the spring driving mechanism needs to be adjusted, the whole night curtain box 40 does not need to be disassembled, and the maintenance cover 44 is only opened to expose the pre-tightening shaft 852, and the pre-tightening shaft 852 is rotated with force to overcome the spring force of the pre-tightening spring 851 to drive the first limiting rod 82 to rotate, so that the one end of the main spring 81 connected with the first limiting rod 82 is rotated, and thus convenient adjustment of the pre-tightening force of the main spring 81 is realized.

[0074] In summary, the commercial refrigeration display cabinet with night curtain of the utility model, through the night curtain device 30 on the outer hanging type setting of the rear side upper portion of the cabinet body 10, realizes the integrated type integration of the night curtain 60 on the commercial refrigeration display cabinet, and will not affect the appearance of the commercial refrigeration display cabinet;Through the setting of the electric drive mechanism or the spring drive mechanism, the process of the night curtain 60 is simple and convenient, better meets the needs of the night curtain 60 in various scenes such as business hours, non-business hours, cold season and the like, and the storage requirement;In addition, the front side of the night curtain device 30 can also be pasted with advertisements, enhancing the appearance of the commercial refrigeration display cabinet and the advertising effect of the goods in the cabinet.

[0075] Finally, it should be noted that: the embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments.

[0076] The above embodiments are only used to illustrate the technical solutions of the utility model and not to limit them;Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the utility model can be modified or some technical features can be replaced by equivalents without departing from the spirit of the utility model technical solutions, and they should be covered in the technical solution range of the utility model claimed.

Claims

1. A commercial refrigerated display case with a night curtain, characterized in that, The night curtain device comprises a night curtain box, a rotating shaft and a spring driving mechanism. The night curtain box has a receiving cavity with a front opening above the rear opening of the cabinet. The rotating shaft is rotatably connected to the receiving cavity of the night curtain box and is arranged along the left-right direction of the cabinet. The spring driving mechanism is connected to the rotating shaft to drive the rotating shaft to rotate. When the night curtain is released, the rotating shaft rotates under the drive of the spring driving mechanism to make the night curtain separate from the rotating shaft.

2. The commercial refrigerated display cabinet of claim 1, wherein, When the night curtain is rolled up, the rotating shaft reverses under the drive of the spring driving mechanism to make the night curtain roll up to the rotating shaft until the release end of the night curtain falls on the top surface of the rear opening of the cabinet.

3. The commercial refrigerated display cabinet of claim 2, wherein, The rotating shaft is a hollow structure, and the first transmission sleeve and the second transmission sleeve are respectively inserted into the two ends of the rotating shaft and are rotatably connected to the left and right side walls of the receiving cavity.

4. A commercial refrigerated display case with a night curtain, characterized in that, The spring driving mechanism comprises a motor, a motor control panel and a release key. The motor control panel is installed in the receiving cavity of the night curtain box. The motor is inserted into the inner cavity of the rotating shaft, and the output shaft of the motor is coaxially arranged with the rotating shaft. The motor control panel and the release key are electrically connected, and the motor control panel and the motor are communicatively connected. The second transmission sleeve and the side wall of the receiving cavity are provided with an end cover and a second limiting shaft. The first transmission sleeve and the side wall of the receiving cavity are also provided with the end cover, and the end of the first limiting shaft away from the motor is inserted into the end cover. The night curtain device comprises a night curtain box, a rotating shaft and a spring driving mechanism. The night curtain box has a receiving cavity with a front opening above the rear opening of the cabinet. The rotating shaft is rotatably connected to the receiving cavity of the night curtain box and is arranged along the left-right direction of the cabinet. The spring driving mechanism is connected to the rotating shaft to drive the rotating shaft to rotate. When the night curtain is released, the user pulls the release end of the night curtain to the front side of the cabinet body against the spring force of the spring drive mechanism, drives the rotating shaft to rotate to make the night curtain off the rotating shaft, until the night curtain covers the entire glass door body, the user no longer exerts force, at this time the spring drive mechanism is locked and the rotating shaft is stopped; when the night curtain is rolled up, the user pulls the release end of the night curtain to unlock the spring drive mechanism, the user no longer exerts force, the rotating shaft reverses under the restoring force of the spring drive mechanism, drives the night curtain to wind up on the rotating shaft, until the release end of the night curtain falls on the top surface of the rear cabinet opening of the cabinet body, at this time the spring drive mechanism is reset and the rotating shaft is stopped.

5. The commercial refrigerated display case of claim 4, wherein, The rotating shaft is a hollow structure, and the two ends of the rotating shaft are respectively inserted with a first rotating sleeve and a second rotating sleeve, and the first rotating sleeve and the second rotating sleeve are respectively rotatably connected with the left and right side walls of the accommodating cavity; the spring drive mechanism comprises a main spring and a self-locking assembly; the main spring is arranged in the inner cavity of the rotating shaft, and the two ends of the main spring are respectively connected with a first limiting rod and a driving block; the first limiting rod penetrates through the first rotating sleeve and is connected with the side wall of the accommodating cavity, the first rotating sleeve is rotatably connected with the first limiting rod, and the driving block is connected with the rotating shaft; the self-locking assembly comprises a locking shaft, a ball, a second limiting rod and a second end cover; one end of the second limiting rod is inserted into the second rotating sleeve and rotatably connected therewith, the other end of the second limiting rod is inserted into the second end cover, and the second end cover is connected with the side wall of the accommodating cavity; the locking shaft is connected with one end of the second limiting rod inserted into the second rotating sleeve, and the second rotating sleeve is rotatably connected with the locking shaft; a slide groove is recessed on the outer wall of the locking shaft, the slide groove comprises two main slides oppositely arranged, a plurality of connecting slides communicating the two main slides, and a locking portion is arranged at one end of the connecting slide; an axially extending slide groove is recessed on the inner wall of the second rotating sleeve, and the ball is accommodated between the slide groove and the slide groove; when the rotating shaft rotates, the ball is rolled in a main slide through the second rotating sleeve, when the rotating shaft stops, the ball enters the connecting slide and rolls to the locking portion; when the rotating shaft rotates again, the ball is rolled in another main slide through the second rotating sleeve and away from the locking portion.

6. The commercial refrigerated display case of claim 5, wherein, The spring drive mechanism further comprises a pre-tightening assembly, the pre-tightening assembly comprises a pre-tightening spring, a pre-tightening shaft, a first end cover and a cover plate; the first end cover is connected with the side wall of the accommodating cavity, and a receiving groove is recessed on the first end cover; the pre-tightening spring is installed in the receiving groove and is in pressure connection with the side wall of the receiving groove; one end of the first limiting rod away from the main spring is arranged in the receiving groove; the pre-tightening shaft is located in the receiving groove and is connected with the first limiting rod, a pre-tightening groove is recessed on the outer wall of the pre-tightening shaft, and the two ends of the pre-tightening spring are pressed on the two side walls of the pre-tightening groove; the cover plate is located on the side of the receiving groove away from the first limiting rod and is connected with the first end cover, so as to limit the pre-tightening spring in the receiving groove.

7. The commercial refrigerated display case of claim 6, wherein, A maintenance opening is formed on the cover plate of the night curtain box, and a maintenance cover is installed on the outer wall of the night curtain box corresponding to the maintenance opening.

8. The commercial refrigerated display case of claim 1 or 4, wherein, The night curtain device further comprises a guide roller rotatably connected in the accommodating cavity of the night curtain box, which is arranged along the left-right direction of the cabinet and below the rotating shaft, so that the night curtain extends out of the front opening of the night curtain box after passing the guide roller.

9. The commercial refrigerated display cabinet according to claim 1 or 4, wherein, The night curtain box comprises two oppositely arranged side frames, a front panel connected between the front sides of the two side frames, and a rear panel connected between the rear sides of the two side frames, so that the accommodating cavity is formed in the night curtain box, and the front opening is formed between the lower part of the front panel and the lower part of the rear panel; the lower parts of the two side frames are respectively connected to the left and right ends of the upper part of the rear side of the cabinet; and the rotating shaft is rotatably connected between the two side frames.

10. The commercial refrigerated display case of claim 1 or 4, wherein, An advertising sticking area is arranged on the outer wall surface of the night curtain box facing the front side of the cabinet.

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