A rotatable electronic price tag backplate

Abstract

This utility model provides a rotatable electronic price tag back panel, including a price tag fixing part and a guide rail fixing part; the front of the guide rail fixing part is used for fixed connection with an external support structure; the front of the price tag fixing part is used for fixing the electronic price tag; the guide rail fixing part and the price tag fixing part are connected back to back and a rotating mechanism is provided at the connection point, so that the price tag fixing part can rotate relative to the guide rail fixing part through the rotating mechanism, realizing the switching between horizontal and vertical display positions, realizing the function of quickly switching the display state of the electronic price tag between horizontal and vertical, which is convenient, fast and improves practicality.

Description

Technical Field

[0001] This utility model relates to the field of price tag back panels, and more particularly to a rotatable electronic price tag back panel. Background Technology

[0002] Price tags, also known as price labels, are a form of information display used by businesses to inform customers about prices. Currently, there are electronic price tags, which are electronic display devices with information transmission and reception capabilities, primarily used in supermarkets, convenience stores, pharmacies, and other similar establishments to display price information. Both regular and electronic price tags need to be secured to shelves using price tag rails.

[0003] The applicant's recently granted patent, CN222851043U, describes a vertically displaying electronic price tag guide rail adapter. This adapter uses a structural plate as a basic framework. The front of the structural plate has a price tag fixing part for connecting to the electronic price tag, and the back of the structural plate has an adapter fixing mechanism for connecting to the guide rail. When the electronic price tag is fixed to the guide rail via the adapter, the length direction of the electronic price tag is perpendicular to the length direction of the guide rail. The adapter can change the original fixing direction of both the guide rail and the electronic price tag. Without altering the guide rail structure or the electronic price tag structure, the adapter allows the electronic price tag to be changed from a horizontal to a vertical display, enriching the usage scenarios of the electronic price tag and improving its practicality.

[0004] In actual use, since the conversion device changes the electronic price tag from a horizontal display to a vertical display, when changing the fixed position or replacing the electronic price tag, it may be necessary to switch it back from a vertical display to a horizontal display. At this time, the conversion device needs to be removed and then re-fixed on the original price tag guide rail. This makes it impossible for the electronic price tag to quickly switch between horizontal and vertical display states, which is inconvenient and affects work efficiency. Utility Model Content

[0005] Therefore, there is a need to provide a rotatable electronic price tag back panel to solve the problem that existing technologies cannot quickly switch the display status of electronic price tags between horizontal and vertical orientations, which is inconvenient and affects work efficiency.

[0006] To achieve the above objectives, this utility model provides a rotatable electronic price tag back panel, including a price tag fixing part and a guide rail fixing part; the front of the guide rail fixing part is used for fixed connection with an external support structure; the front of the price tag fixing part is used for fixing the electronic price tag; the guide rail fixing part and the price tag fixing part are connected back to back and a rotating mechanism is provided at the connection point, so that the price tag fixing part can rotate relative to the guide rail fixing part through the rotating mechanism, realizing the switching between horizontal display position and vertical display position.

[0007] Furthermore, the rotating mechanism includes a rotating shaft and a rotating hole adapted to the rotating shaft.

[0008] Furthermore, the rotating shaft is a circumferential snap-fit.

[0009] Furthermore, it also includes a rotation limiting mechanism, which, starting from the position of the price tag fixing part in the horizontal or vertical display position, limits the rotation angle range of the price tag fixing part to 0°-90° clockwise or 0°-90° counterclockwise.

[0010] Furthermore, the rotation limiting mechanism includes a fan ring groove and a fan ring stop; when the price tag fixing part switches between a horizontal display position and a vertical display position, the fan ring stop slides relative to each other between the two ends of the fan ring groove.

[0011] Furthermore, it also includes an auxiliary fixing mechanism, which includes a movable component that can be fitted and at least two fixing components. When the price tag fixing part switches between a horizontal display position and a vertical display position, the movable component releases its fit with one of the fixing components and then fits into the other fixing component.

[0012] Furthermore, the movable component is a protrusion disposed on the back of the price tag fixing part or the back of the guide rail fixing part, and the fixing component is an annular groove disposed on the back of the guide rail fixing part or the back of the price tag fixing part. The protrusion moves within the groove as the price tag fixing part rotates, and the groove is provided with an inner groove that matches the protrusion.

[0013] Furthermore, the guide rail fixing part includes a structural plate and an inner pressure plate. The back of the structural plate is used to be rotatably connected to the back of the price tag fixing part. The upper end of the inner pressure plate is flexibly connected to the upper end of the structural plate, and an inner pressure space is formed between the inner pressure plate and the structural plate.

[0014] Furthermore, a gasket is provided on the inner side of the inner pressure plate.

[0015] Furthermore, the price tag fixing part includes a fixing plate, an upper hook plate, and a lower hook plate. The upper hook plate and the lower hook plate are used to fasten the upper and lower sides of the electronic price tag, respectively, and the fixing plate is used to abut against the back of the electronic price tag.

[0016] Unlike existing technologies, the above technical solution connects and fixes the guide rail fixing part to the horizontal external support structure. By default, the price tag fixing part is positioned in the horizontal display position, meaning the information display direction after the electronic price tag is inserted is horizontal. When the guide rail fixing part is connected and fixed to the vertical external support structure, or when the information content in the electronic price tag needs to be arranged vertically, the price tag fixing part can be rotated relative to the guide rail fixing part to quickly switch to the vertical display position. This allows the electronic price tag to quickly switch between horizontal and vertical display states, offering convenience, speed, and improved practicality. Attached Figure Description

[0017] Figure 1 A three-dimensional view of the structure of a rotatable electronic price tag backplate as described in a specific embodiment;

[0018] Figure 2 An exploded three-dimensional view of the structure of a rotatable electronic price tag backplate as described in a specific embodiment;

[0019] Figure 3 An exploded three-dimensional view of the structure of a rotatable electronic price tag back panel from another angle, as described in the specific embodiment.

[0020] Figure 4 This is a front view of the guide rail fixing part according to the specific embodiment;

[0021] Figure 5 The image shows a front view of the structure of a rotatable electronic price tag back panel, as described in a specific embodiment, with the price tag fixing part located in the horizontal display position.

[0022] Figure 6 The left view of the structure of a rotatable electronic price tag backplate as described in the specific embodiment;

[0023] Figure 7 The image shows a front view of the structure of a rotatable electronic price tag back panel, as described in a specific embodiment, with the price tag fixing part located in the longitudinal display position.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10. Price tag fixing part; 101. Fixing plate; 102. Upper hook plate; 103. Lower hook plate; 20. Guide rail fixing part; 201. Structural plate; 202. Inner pressure plate; 30. Rotation mechanism; 301. Rotation shaft; 302. Rotation hole; 40. Rotation limiting mechanism; 401. Fan ring groove; 402. Fan ring stop block; 501. Protrusion; 502. Annular groove; 503. Fitting inner groove; 5031. Curved surface protrusion; 60. Gasket. Detailed Implementation

[0026] To explain in detail the technical content, structural features, objectives, and effects of the technical solution, the following description is provided in conjunction with specific embodiments and accompanying drawings.

[0027] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0028] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0029] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0030] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0031] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0032] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0033] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0034] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0035] Please see Figures 1 to 7This embodiment provides a rotatable electronic price tag back panel, including a price tag fixing part 10 and a guide rail fixing part 20. The front of the guide rail fixing part 20 is used for fixed connection with an external support structure, which refers to the rail of a shelf or a price tag guide rail frame, such as a shelf with a guide rail mounting groove on the outer edge for sliding into and engaging the price tag guide rail. The guide rail fixing part 20 can be fixed by using an upper card and a lower card combination to respectively engage the upper sliding groove and the lower sliding groove of the guide rail mounting groove. The guide rail fixing part 20 can also refer to other guide rail fixing structures authorized by the applicant. Examples are given below: For example, the guide rail fixing mechanism adopts an adhesive mechanism to achieve fixation by sticking the external support structure. The adhesive mechanism can use double-sided tape, nylon Velcro, etc. Referring to examples of guide rails being fixed to shelves, walls, etc. using adhesive mechanisms, when the adapter fixing mechanism uses tape, the adhesive on the tape surface allows the back of the adapter to adhere to the contact surface of the guide rail for fixation. When using nylon hook and loop fasteners, the A and B sides of the nylon hook and loop fasteners can be set on the back of the adapter and the front of the guide rail respectively, and finally, fixation is achieved by sticking the nylon A side to the nylon B side. Fixing by adhesive mechanisms is low-cost, simple in structure, convenient in fixing process, requires only one adhesive surface for fixation, and has high compatibility. For example, to facilitate subsequent disassembly or repositioning of the guide rail, existing guide rail fixing mechanisms employ clamping mechanisms. These clamping mechanisms hold the external support structure in place. The clamping mechanism can be referenced from the applicant's previous authorized patents, such as the electronic shelf label assembly device with patent publication number CN214890368U. This new device clamps the shelf plate by cooperating with the other end of the first clamping part and the second clamping part. An elastic element allows the second clamping part to push upwards against the shelf plate. Thus, the shelf plate fixing mechanism can be firmly clamped onto the shelf plate, reducing the possibility of the mechanism wobbling. This allows the electronic shelf label assembly device to adapt to various types of shelf plates. Similarly, the adapter fixing mechanism described in this invention can be configured with the same clamping structure, compatible with clamping the guide rail and fixing the adapter device onto the guide rail.

[0036] The front of the price tag fixing part 10 is used to fix the electronic price tag. The specific structure of the price tag fixing part 10 can refer to various structures for fixing electronic price tags already authorized by the applicant, such as a rear support plate with snap-fit ​​slide rails at the top and bottom, forming a C-shaped structure, which allows the electronic price tag to be snapped in and fixed. The price tag fixing part 10 can also be an open-top guide rail groove, where the electronic price tag can be placed to achieve the same effect. The price tag fixing part 10 can also adopt a structure combining a support plate and a transparent cover plate. The support plate supports the electronic price tag, and then the transparent cover plate is closed to fix the electronic price tag. For a specific structure, refer to the applicant's recently authorized patent, patent publication number CN218181752U, regarding an electronic price tag guide rail; details will not be elaborated here. Preferably, the price tag fixing part 10 is detachably connected to the electronic price tag. The detachable connection can include fastener connections, snap-fit ​​connections, hinges, etc.

[0037] The guide rail fixing part 20 is connected back-to-back with the price tag fixing part 10, and a rotating mechanism 30 is provided at the connection point. The rotating mechanism 30 allows the price tag fixing part 10 to rotate relative to the guide rail fixing part 20, thereby enabling the switching between horizontal and vertical display positions.

[0038] The rotating mechanism 30 can adopt various simple structures, such as a rotating engagement structure of the rotating shaft 301. In this structure, the rotating mechanism 30 includes a rotating shaft 301 and a rotating hole 302 adapted to the rotating shaft 301. The guide rail fixing part 20 has a rotating shaft 301 with an annular flange at its center, and the price tag fixing part 10 has a corresponding rotating hole 302. An annular groove 502 is provided inside the hole. During assembly, the rotating shaft 301 elastically engages with the groove, forming an axial limit, allowing the price tag fixing part 10 to rotate freely around the axis of the rotating shaft 301. Disassembly is achieved by pulling it out axially. Furthermore, the rotating shaft 301 can be a circumferential snap-fit ​​structure. Utilizing the elastic deformation of the snap-fit, the rotating shaft 301 automatically passes over the mating step when inserted into the snap-fit, and releases easily. The locking mechanism eliminates the need for screws, pins, and other fasteners. After locking, the snap-fit ​​only restricts axial displacement, not circumferential freedom. Therefore, the guide rail fixing part 20 and the price tag fixing part 10 can rotate to meet angle adjustment requirements. Unlocking is achieved by pressing or flicking the snap-fit ​​in the opposite direction, and repeated insertion and removal do not damage the mating surfaces. Alternatively, a double-layer coaxial plate structure can be used. The guide rail fixing part 20 serves as the base plate with a threaded column in the center; the price tag fixing part 10 is a rotating plate. After the column is inserted into the central through hole, it is locked in place by two plastic retaining rings. A gap is left between the retaining rings and the column, allowing the rotating plate to rotate. The screws on the retaining rings can be used to position the angle at any time. Alternatively, a retaining ring-type rotary joint can be used. A retaining ring with a chamfered edge is injection-molded on the end face of the guide rail fixing part 20, and a corresponding chamfered groove is provided on the end face of the price tag fixing part 10. After pressing in, the retaining ring elastically embeds into the groove, locking the axial position. The two cylindrical surfaces fit smoothly together, resulting in low rotational resistance and unlimited angle.

[0039] It should be noted that, including but not limited to this embodiment, all connections except those formed by flexible materials to create easily deformable connections are actually fixed connections. The connection is essentially two rigid plastics (such as PVC) connected together by rigid plastics, and the connection will maintain the relative position of the sheet-like structure to which it is connected.

[0040] After the guide rail fixing part 20 is connected and fixed to the horizontal external support structure, the price tag fixing part 10 is located in the horizontal display position by default, that is, the information display direction after the price tag fixing part 10 is installed in the electronic price tag is horizontal. When the guide rail fixing part 20 is connected and fixed to the vertical external support structure, or when the information content in the electronic price tag needs to be arranged vertically, the price tag fixing part 10 can be rotated relative to the guide rail fixing part 20 to quickly switch the guide rail fixing part 20 to the vertical display position, thereby realizing the function of quickly switching the display state of the electronic price tag between horizontal and vertical, which is convenient, fast and improves practicality.

[0041] In actual use, it was found that the price tag fixing part 10 is prone to over-rotation during rotation. Staff need to make fine adjustments laterally or longitudinally to ensure the price tag fixing part 10 is accurately positioned in the horizontal or vertical display position, which is inconvenient. To prevent excessive swaying of the price tag fixing part 10 during rotation, some embodiments include a rotation limiting mechanism 40. Starting from the horizontal or vertical display position of the price tag fixing part 10, the rotation angle of the price tag fixing part 10 is limited to 0°-90° clockwise or 0°-90° counterclockwise. The rotation limiting mechanism 40 can adopt a structure combining a limiting pin and an arc-shaped groove: a 90° fan-shaped limiting groove is injection-molded on the back of the guide rail fixing part 20, with stops at both ends of the groove; the limiting pin is embedded in the corresponding position of the price tag fixing part 10. During rotation, the pin slides within the groove and stops upon touching the stops, ensuring the horizontal / vertical endpoint positioning. The rotation limiting mechanism 40 can also adopt a ratchet and pawl structure: a ratchet is molded around the outer periphery of the rotating shaft 301, and an elastic pawl is built into the price tag fixing part 10. The pawl engages with the tooth groove every 90° rotation, producing a "click" sound to indicate it is in place; gently pressing the pawl in the opposite direction unlocks it. By limiting the rotation angle range of the price tag fixing part 10, operation time can be significantly reduced, and repeated alignment can be avoided.

[0042] Specifically, the rotation limiting mechanism 40 includes a fan ring groove 401 and a fan ring stop 402. When the price tag fixing part 10 switches between a horizontal display position and a vertical display position, the fan ring stop 402 slides relative to the two ends of the fan ring groove 401. When the price tag fixing part 10 rotates clockwise from the horizontal position (0°) to the vertical position (90°), the fan ring stop 402 slides along the fan ring groove 401 to the right end stop; when rotating in the opposite direction, the protrusion slides back to the left end stop. The structure is simple and can effectively avoid excessive rotation. Preferably, buffer recesses can be added to both ends of the fan ring groove 401. After the protrusion enters the recess, it generates slight damping to prevent accidental rotation.

[0043] To further enhance the stability of the price tag fixing part 10 in the horizontal and vertical display positions, some embodiments include an auxiliary fixing mechanism. This auxiliary fixing mechanism includes a movable component that can be fitted with another component and at least two fixing components. When the price tag fixing part 10 switches between the horizontal and vertical display positions, the movable component releases its fit with one of the fixing components and then engages with the other. The auxiliary fixing mechanism can employ a structure from the prior art, such as a steel ball combined with a spring. A stainless steel ball (movable component) is embedded on the back of the price tag fixing part 10, and two hemispherical positioning recesses (fixing components) are machined at corresponding positions on the guide rail fixing part 20. After rotation to the correct position, the steel ball is engaged in the recess under the action of the spring, providing a certain holding force; a slight push unlocks it. Alternatively, an elastic buckle combined with positioning holes can be used. An elastic buckle (movable component) is injection molded on the back of the price tag fixing part 10, and the guide rail fixing part 20 has two pairs of positioning holes (fixing components). When rotated to the correct position, the buckle springs into the hole, making a "click" sound; a slight reverse force disengages it. The auxiliary fixing mechanism ensures that the price tag fixing part 10 does not shift under vibration or impact, and does not increase rotational resistance.

[0044] Specifically, the movable component is a protrusion 501 disposed on the back of the price tag fixing part 10 or the back of the guide rail fixing part 20, and the fixing component is an annular groove 502 disposed on the back of the guide rail fixing part 20 or the back of the price tag fixing part 10. The protrusion 501 moves within the groove as the price tag fixing part 10 rotates, and the groove is provided with an inner groove 503 that matches the protrusion 501. The annular groove 502 serves as a moving channel, and its depth and width are larger than the diameter of the protrusion 501 to ensure that the protrusion 501 slides smoothly with rotation. The inner groove 503 consists of two curved ridges 5031 symmetrically arranged within the annular groove 502, and the distance between the two curved ridges 5031 is slightly adapted to the protrusion 501, which can form a bidirectional locking mechanism for the protrusion 501. When rotating to or from the horizontal / vertical display position, the protrusion 501 slides out of one fitting inner groove 503 and falls into another fitting inner groove 503, thus completing the switching and locking of the horizontal / vertical display position. This embodiment achieves a balance between locking force and rotational smoothness, that is, it can stabilize the display position and also complete the switching quickly.

[0045] In some embodiments, the guide rail fixing part 20 includes a structural plate 201 and an inner pressure plate 202. The back of the structural plate 201 is rotatably connected to the back of the price tag fixing part 10. The upper end of the inner pressure plate 202 is flexibly connected to the upper end of the structural plate 201, forming an inner pressure space between the inner pressure plate 202 and the structural plate 201. The upper end of the inner pressure plate 202 and the upper end of the structural plate 201 are integrally formed by a flexible connecting piece, forming an elastically opening and closing inner pressure space. During installation, the shelf beam is inserted into the inner pressure space, and the inner pressure plate 202 clamps under its own elasticity and the thickness of the beam, achieving tool-free fixing. For shelves of different thicknesses, the inner pressure plate 202 can open a certain space to achieve self-adaptation, compatible with L-shaped, T-shaped, or flat rails. The back of the structural plate 201 can also retain traditional bolt holes, allowing users to choose clamping or bolt fixing according to the scenario, improving installation compatibility.

[0046] In some embodiments, a gasket 60 is provided on the inner side of the inner pressure plate 202. The gasket 60 may be made of rubber, and its surface may be knurled to increase the coefficient of friction. By filling gaps with the gasket 60, a wider range of shelf fixing tracks can be used, improving practicality and compatibility.

[0047] In some embodiments, the price tag fixing part 10 includes a fixing plate 101, an upper hook plate 102, and a lower hook plate 103. The upper hook plate 102 and the lower hook plate 103 are used to hold the upper and lower sides of the electronic price tag, respectively, and the fixing plate 101 is used to abut against the back of the electronic price tag. The fixing plate 101 serves as the main body, and its back side is connected to the guide rail fixing part 20 via a rotating mechanism 30. The upper hook plate 102 and the lower hook plate 103 form C-shaped slots on the upper and lower edges of the fixing plate 101, respectively, to fix the electronic price tag. When installing the electronic price tag, the upper / lower side of the electronic price tag is inserted into the upper hook plate 102 / lower hook plate 103, and then the other side is pressed in to complete the fixing; when disassembling, the price tag is released by pushing the upper hook plate 102 / lower hook plate 103 outward. This structure requires no screws or springs, has a small number of parts, is injection molded in one piece, and has a simple and stable structure. The C-shaped slot design allows it to fit electronic price tags of various thicknesses, making insertion and removal easy and quick with one hand, significantly improving the efficiency of installation and maintenance.

[0048] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A rotatable electronic price tag backplate, characterized in that: It includes a price tag fixing part and a guide rail fixing part; the front of the guide rail fixing part is used for fixed connection with an external support structure; the front of the price tag fixing part is used for fixing electronic price tags; the guide rail fixing part and the price tag fixing part are connected back to back and a rotating mechanism is provided at the connection point, so that the price tag fixing part can rotate relative to the guide rail fixing part through the rotating mechanism, realizing the switching between horizontal display position and vertical display position.

2. The rotatable electronic price tag backplate according to claim 1, characterized in that: The rotating mechanism includes a rotating shaft and a rotating hole adapted to the rotating shaft.

3. The rotatable electronic price tag backplate according to claim 2, characterized in that: The rotating shaft is a circumferential snap-fit.

4. The rotatable electronic price tag backplate according to claim 1, characterized in that: It also includes a rotation limiting mechanism, which limits the rotation angle of the price tag fixing part to 0°-90° clockwise or 0°-90° counterclockwise, starting from the position of the price tag fixing part in the horizontal or vertical display position.

5. A rotatable electronic price tag backplate according to claim 4, characterized in that: The rotation limiting mechanism includes a fan ring groove and a fan ring stop; when the price tag fixing part switches between the horizontal display position and the vertical display position, the fan ring stop slides relative to the two ends of the fan ring groove.

6. A rotatable electronic price tag backplate according to claim 1, characterized in that: It also includes an auxiliary fixing mechanism, which includes a movable part that can be fitted and at least two fixing parts. When the price tag fixing part switches between a horizontal display position and a vertical display position, the movable part releases its fit with one of the fixing parts and then fits into the other fixing part.

7. A rotatable electronic price tag backplate according to claim 6, characterized in that: The movable component is a protrusion disposed on the back of the price tag fixing part or the back of the guide rail fixing part, and the fixing component is an annular groove disposed on the back of the guide rail fixing part or the back of the price tag fixing part. The protrusion moves in the groove as the price tag fixing part rotates, and the groove is provided with an inner groove that fits the protrusion.

8. A rotatable electronic price tag backplate according to claim 1, characterized in that: The guide rail fixing part includes a structural plate and an inner pressure plate. The back of the structural plate is used to rotatably connect with the back of the price tag fixing part. The upper end of the inner pressure plate is flexibly connected to the upper end of the structural plate, and an inner pressure space is formed between the inner pressure plate and the structural plate.

9. A rotatable electronic price tag backplate according to claim 8, characterized in that: The inner side of the inner pressure plate is provided with a gasket.

10. A rotatable electronic price tag backplate according to claim 1, characterized in that: The price tag fixing part includes a fixing plate, an upper hook plate, and a lower hook plate. The upper hook plate and the lower hook plate are used to fasten the upper and lower sides of the electronic price tag, respectively, and the fixing plate is used to abut against the back of the electronic price tag.

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