CN219435501U - Circulating panel with novel positioning mechanism - Google Patents

Abstract

A circulating display board with a novel positioning mechanism comprises a circulating display board body; the display board is also provided with an alarm circuit, wherein two side ends of the rotating shaft of the circulating display board body are respectively provided with a fixed board, and the outer sides of the two fixed boards are provided with a plurality of permanent magnets; the upper part of the bearing pedestal at one end of the circulating display board body is provided with a permanent magnet A. The Hall sensor is arranged at the upper part of the bearing pedestal at the other end; the power module and the alarm circuit are arranged in the middle element box in front of the left bearing seat and are electrically connected. The utility model discloses non-contact fixes a position the exhibition face, owing to do not have mechanical contact, wearing and tearing etc. like this, work more reliable life is longer, and after corresponding exhibition face is in place perpendicularly, buzzer can sound a period of time, in time suggestion relevant personnel must not continue to rotate the exhibition face again. This novel personnel have brought the facility for relevant, and have improved the bandwagon effect. Based on the above, the utility model has good application prospect.

Description

Circulating panel with novel positioning mechanism

Technical Field

The utility model relates to the technical field of display equipment, in particular to a circulating display board with a novel positioning mechanism.

Background

The utility model provides a circulating showcase is mainly applied to a kind of equipment such as science and technology exhibition, advertisement show, teaching use, and the like, and it includes that structure axis of rotation and annular distribution interval distribute a plurality of exhibition faces of installing on the axis of rotation, and the axis of rotation both sides end is installed on the bearing pedestal, and a plurality of exhibition faces are printed respectively with content such as relevant picture or characters, in the application, spectator or relevant personnel rotate, behind the axis of rotation (one of them exhibition face of hand rotation), the content of a plurality of exhibition faces will distribute perpendicularly and show. Under actual conditions, in order to ensure that the corresponding one display surface can not automatically displace after rotating in place, the existing circulating display board is provided with a positioning plate with a plurality of positioning holes at the side end (the positioning holes correspond to the transverse positions of the display surfaces), a spring fixing mechanism is arranged on a bearing seat at the side end of the positioning plate, and when the corresponding one display surface rotates in place, a positioning rod with the front end being in a circular arc shape is pushed by a spring of the spring fixing mechanism to enter the corresponding one positioning hole, so that the display surface can not move under the action of no larger external force, and the audience can conveniently watch the content of the display surface (when the subsequent staff or the audience rotates the display surface slightly, the positioning rod overcomes the elastic force of the spring, and the front end moves from the semicircular positioning hole to the rear end and is separated from the positioning hole, so that the next display surface can be rotated).

Although the positioning plate mechanism can realize the positioning of the display surface to a certain extent, the positioning plate mechanism is limited by the structure, and more or less has specific problems, and the positioning plate mechanism is embodied as follows. The method comprises the following steps: after the spring is used for a long time, the elastic force is weakened due to metal fatigue or clamping stagnation and the like, and after the positioning rod enters the positioning hole, the elastic force applied by the spring is too small, so that the positioning rod is easy to separate from the positioning hole, and a good spreading surface positioning effect cannot be achieved. And two,: when the related personnel rotate the display surface, the related personnel cannot obtain corresponding prompts, and after the display surface is in place and the positioning rod enters the positioning hole, the display surface is continuously rotated, so that inconvenience can be brought to the related personnel (including management personnel or audiences). The applicant has carried out effective search on patent websites and the like in the related art, and has not searched the circulating display board which adopts other modes to realize effective positioning and prompts related personnel after the display surface is in place. At present, although there is also a technology of fixing the display board through a magnet or the like, for example, in the patent number 201821351205.4 of China and the patent name of an outdoor display board for English teaching, the content of the display board is recorded as "when in use, the whole equipment is moved to a designated position through a moving wheel, a second rod sleeve is rotated to a proper position through a second shaft pin on a second folding rod, a display board body is rotated to the upper part of the fixing frame through a first folding rod on the fixing frame, then the rotating display board is rotated to the same plane with the display board body by pulling, the content to be displayed is fixed on the display board body and the rotating display board through a fixed magnetic block, the equipment is folded to be small, the installed moving wheel can be used by any mobile equipment, the use of an educational is facilitated, the display board is simple in structure and convenient to use, the display board is high in practicability, and the problems of huge size and heavy structure and inconvenient to move the equipment at any time during use are solved. The technology including the comparison patent only fixes the display board body on the rotary display board through the magnet, that is to say, the function of respectively fixing a plurality of display surfaces of the circulating display board cannot be realized, therefore, the circulating display board which can effectively and respectively position the display surfaces and can prompt related personnel in time after the corresponding display surfaces rotate in place is provided, and has a better display effect is especially necessary.

Disclosure of Invention

In order to overcome the defects of the prior circulating display board, which are caused by the limited structure and are described in the background, the utility model provides the circulating display board with the novel positioning mechanism, which not only has all the display functions of the common circulating display board, but also can position the display surface through the magnet in a non-contact way under the combined action of the related mechanism and the circuit, has longer service life due to no mechanical contact and abrasion, and can prompt related personnel in time that the related personnel cannot rotate the display surface after the corresponding display surface is vertical in place, thereby bringing convenience to the related personnel and improving the display effect.

The technical scheme adopted for solving the technical problems is as follows:

a circulating display board with a novel positioning mechanism comprises a circulating display board body; the display board is characterized by also comprising an alarm circuit, wherein two side ends of the rotating shaft of the circulating display board body are respectively provided with a fixed board, and the outer sides of the two fixed boards are respectively provided with a plurality of permanent magnets at intervals; the upper part of one end bearing pedestal of the circulating display board body is provided with a permanent magnet A. The Hall sensor is arranged at the upper part of the bearing pedestal at the other end; the power module and the alarm circuit are arranged in the element box; the power supply output end of the power supply module is electrically connected with the Hall sensor and the power supply input end of the alarm circuit, and the signal output end of the Hall sensor is electrically connected with the signal input end of the alarm circuit.

Further, the number of the magnets of each fixed plate is consistent with the number of the display surfaces.

Further, the magnets and the display surfaces are respectively and transversely positioned in a straight line, and gaps between the magnets of the fixing plates at the two ends are respectively larger than the outer diameter of the Hall sensor and the length of the magnet A.

Further, the outer ends of the plurality of magnets of the two-end fixing plates are spaced from the inner side of the magnet A and the inner side of the Hall sensor, and the magnetic acting force of the magnet acts on the magnetic induction surfaces of the magnet A and the Hall sensor respectively.

Further, the polarities of the outer sides of the plurality of magnets at one end and the inner sides of the magnets A are opposite.

Further, the alarm circuit comprises a capacitor, a resistor, an NPN triode, a relay and a buzzer which are electrically connected, wherein a normally open contact end of the first relay is connected with one end of the first resistor, an anode power input end of the second relay and a control power input end of the second relay, the other end of the first resistor is connected with the anode of the capacitor, one end of the second resistor is connected with the base electrode of the NPN triode, a collector electrode of the NPN triode is connected with an anode power input end of the second relay, a normally closed contact end of the buzzer is connected with an anode power input end of the second relay, and a capacitor anode is connected with an emitter electrode of the NPN triode, an anode power input end of the buzzer and an anode power input end of the first relay.

The utility model has the beneficial effects that: the utility model is based on the circulating display board body and has all display functions of the common circulating display board. In application, the corresponding display surface is positioned through the magnetic acting force of the magnets at the right side end and the magnets A, and as the display surface is positioned in a non-contact manner, mechanical contact, abrasion and the like are avoided, the operation is more reliable, the service life is longer, the magnetic acting force of the corresponding magnet at the left side end acts on the Hall sensor after the corresponding display surface is vertically in place, and thus the buzzer of the alarm circuit can sound for a period of time to prompt related personnel not to continue rotating the display surface. This novel personnel have brought the facility for relevant, and have improved the bandwagon effect. Based on the above, the utility model has good application prospect.

Drawings

The utility model is further described below with reference to the drawings and examples.

FIG. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a circuit diagram of the present utility model.

Detailed Description

The circulating display board with the novel positioning mechanism comprises a circulating display board body with a rotating shaft 1, nine display surfaces 2 and bearing seat platforms 3, and a power module U1, wherein the inner side ends of the nine display surfaces are annularly distributed and arranged on the outer side of the rotating shaft 1 at a certain distance, the front side end or the rear side end of each display surface 2 is printed with pictures or text content and the like, and the two side ends of the rotating shaft 1 are respectively and tightly sleeved in bearing inner rings at the upper parts of the two sets of bearing seat platforms 3; the device is also provided with an alarm circuit 4, the left and right side ends of the rotating shaft 1 are respectively provided with an annular fixed plate 5, and the outer rings of the two fixed plates 5 are respectively provided with nine arc permanent magnets CT at a certain distance; a permanent magnet A6 is vertically adhered to the inner side of the upper part of the right bearing seat table 3 by glue; a hall sensor U2 is vertically installed on the inner side of the upper portion of the left end bearing seat 3.

As shown in fig. 1 and 2, the number of magnets CT per fixing plate is identical to the number of the extension surfaces 2. The middle parts of the nine magnets CT and the nine display surfaces 2 are transversely positioned on a straight line, and gaps among the nine magnets CT of the left end fixing plate and the right end fixing plate are respectively larger than the outer diameter of the Hall sensor U2 and the length of the magnet A6. The outer ends of the nine magnets CT of the left and right end fixing plates are spaced a certain distance (about 1.5 mm) from the inner side of the magnet A6 and the inner side of the Hall sensor U2, and the magnetic acting force of the magnets CT acts on the magnetic induction surfaces of the magnet A6 and the Hall sensor U2 respectively. The polarity of the outer sides of the nine magnets CT of the right end fixing plate 5 is opposite to that of the inner sides of the magnets A6. The alarm circuit comprises a capacitor C1, resistors R1 and R2, an NPN triode Q1, relays K1 and K2 and a buzzer B which are connected through wiring of a circuit board, wherein a normally open contact end of the first relay K1 is connected with one end of the first resistor R1, a positive power input end of the second relay K2 is connected with a control power input end, the other end of the first resistor R1 is connected with the positive end of the capacitor C1, one end of the second resistor R2 is connected with a base electrode of the NPN triode Q1, a collector electrode of the NPN triode Q1 is connected with a negative power input end of the second relay K2, a positive power input end of the buzzer B is connected with a normally closed contact end of the second relay K2, and a negative electrode of the capacitor C1 is connected with an emitter of the NPN triode Q1, a negative power input end of the buzzer B and a negative power input end of the first relay K1.

As shown in fig. 1 and 2, the power module U1 and the alarm circuit 4 are mounted on a circuit board in the middle element box 7 in front of the left bearing block. The power input ends 1 and 2 pins of the power module U1 and the two poles of the alternating current 220V power supply are respectively connected through wires, the power output ends 3 and 4 of the power module U1 are respectively connected with the pins 1 and 2 of the power input end of the Hall sensor U2, the power input end of the power input end relay K1 of the alarm circuit and the emitter of the NPN triode Q1 through wires, and the pin 3 of the signal output end of the Hall sensor U2 is respectively connected with the positive power input end of the signal input end relay K1 of the alarm circuit through wires.

The utility model is based on a circulating display board body, as shown in figures 1 and 2, and has all display functions of a common circulating display board. In the novel application, when related personnel rotate one of the display surfaces 2 and the rotating shaft 2 drive all the display surfaces to rotate, the magnets CT at the left end and the right end rotate, after the magnets CT at the right end of the corresponding display surface 2 are rotated in place, the magnets CT at the right end of the corresponding display surface and the magnets A on the right end bearing seat table 3 are transversely in a straight line and are mutually attracted, so that the display surface 2 can not rotate again under the action of no larger external force due to the strong attraction of the corresponding magnet and the magnets A, and a good positioning effect on the display surface is achieved (the subsequent manual rotation force is larger than the attraction force of the magnets and the magnets A, so that the display surface can be rotated); because the non-contact type positioning device is used for positioning the display surface, mechanical contact, abrasion and the like are avoided, the working is more reliable, and the service life is longer. After 220V AC power enters the power module U1, the 3 and 4 pins of the power module U1 can output stable DC12V power to enter the Hall sensor U2 and the power input end of the alarm circuit, so that the sensor and the circuit work electrically. When the related person rotates the display surface, the corresponding magnet at the right side end of the corresponding display surface 2 and the magnet A are attracted together, the corresponding magnet CT at the left side end of the corresponding display surface is close to the magnetic induction surface at the right inner side end of the Hall sensor U2 which is transversely distributed, under the magnetic action force, the 3-foot output high level of the Hall sensor U2 (a reed pipe can be adopted for replacing) enters the positive power input end of the relay K1, the relay K1 is electrified to attract the control power input end of the relay K1 to be closed with the normally open contact end, the buzzer B can generate electric sounding at the moment (at the moment, the relay K1 is powered off to control the power input end of the relay K and the normally closed contact end of the relay) so as to prompt the related person that the corresponding display surface rotates in place, the 3-foot output high level of the Hall sensor U2 is not generated when the display surface is not rotated in place (the display surface is not rotated in place, the relay K1 is not electrified to attract the normally open contact end). When the relay K1 is electrified and attracted, the buzzer B is electrified, and meanwhile, the 12V power supply is also subjected to current limiting and voltage reduction through the resistor R1 to charge the capacitor C1; when the capacitor C1 is not fully charged in the beginning 3 seconds, the 12V power supply is subjected to current-limiting and voltage-reducing through the resistors R1 and R2, the base electrode of the NPN triode Q1 is lower than 0.7V, the NPN triode Q1 is cut off, the relay K2 is continuously powered off, then the control power supply input end and the normally closed contact end of the relay K2 cannot be powered on, and the buzzer B is continuously powered on to sound. After the capacitor C1 is charged for more than 3 seconds, a 12V power supply is subjected to current-limiting and voltage-reducing through the resistors R1 and R2, the voltage is reduced, the base electrode of the NPN triode Q1 is higher than 0.7V, the collector electrode of the NPN triode Q1 is conducted, the output low level of the collector electrode is input into the negative power supply input end of the relay K2, the relay K2 is electrified to suck the open circuit of the control power supply input end and the normally closed contact end, and then the buzzer B does not sound any more. Through the above, after the corresponding exhibition face rotates in place every time, the buzzer B can send out 3 seconds of suggestion sound, prevents to sound for a long time and brings discomfort to relevant personnel watching exhibition face content. When the exhibition face rotates next time, hall sensor U2's magnetism is felt the face and is not received magnetic force effect, and 3 feet can stop output power, then relay K1, K2 all can lose electricity, and electric capacity C1 fills the electricity and releases the completion fast, rotates to the corresponding back of next exhibition face, and hall sensor U2's magnetism is felt the face and receives magnetism effort again, and 3 feet can output high level again, and then buzzer B can send 3 seconds suggestion sound again, satisfies the in-service use needs. This novel personnel have brought the facility for relevant, and have improved the bandwagon effect. In fig. 2, NPN transistor Q1 model number 9012; the relays K1 and K2 are DC12V relays; the resistance values of the resistors R1 and R2 are respectively 1.4M and 470K; the capacitor C1 is an electrolytic capacitor of model 2 muF/25V; the buzzer B is an active continuous sound buzzer alarm finished product of model FM 12V-DC; the power supply module U1 is a finished product of an alternating current-to-direct current switching power supply module with the model of 220V/12V/100W; the U2 type of the Hall sensor is a finished product of a switch type Hall sensor of CS 6835.

It should be understood that although the present disclosure describes embodiments, the embodiments do not include only a single embodiment, and the description is for clarity only, and those skilled in the art should consider the disclosure as a whole, and the embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

Claims (6)

1. The circulating display board with the novel positioning mechanism comprises a circulating display board body and a power supply module; the display board is characterized by also comprising an alarm circuit, wherein two side ends of the rotating shaft of the circulating display board body are respectively provided with a fixed board, and the outer sides of the two fixed boards are respectively provided with a plurality of permanent magnets at intervals; the upper part of one end bearing pedestal of the circulating display board body is provided with a permanent magnet A, and the upper part of the other end bearing pedestal is provided with a Hall sensor; the power module and the alarm circuit are arranged in the element box; the power supply output end of the power supply module is electrically connected with the Hall sensor and the power supply input end of the alarm circuit, and the signal output end of the Hall sensor is electrically connected with the signal input end of the alarm circuit.

2. The circulating display board with novel positioning mechanism as claimed in claim 1, wherein the number of magnets of each fixed board is consistent with the number of display surfaces.

3. The circulating type display board with the novel positioning mechanism according to claim 1, wherein the plurality of magnets and the plurality of display surfaces are respectively and transversely positioned in a straight line, and gaps between the plurality of magnets of the two-end fixing boards are respectively larger than the outer diameter of the Hall sensor and the length of the magnet A.

4. The circulating display board with the novel positioning mechanism according to claim 1, wherein the outer side ends of the plurality of magnets of the two-end fixing board are spaced from the inner side of the magnet A and the inner side of the Hall sensor, and the magnetic acting force of the magnet acts on the magnetic induction surfaces of the magnet A and the Hall sensor respectively.

5. The circulating display board with the novel positioning mechanism as claimed in claim 1, wherein the outer sides of the plurality of magnets at one end and the inner sides of the magnets a are opposite in polarity.

6. The circulating display board with the novel positioning mechanism according to claim 1, wherein the alarm circuit comprises a capacitor, a resistor, an NPN triode, a relay and a buzzer which are electrically connected, a normally open contact end of the first relay is connected with one end of the first resistor, an anode power input end of the second relay is connected with a control power input end, the other end of the first resistor is connected with one end of the capacitor, the anode of the second resistor is connected with the base electrode of the NPN triode, a collector electrode of the NPN triode is connected with an anode power input end of the second relay, an anode power input end of the buzzer is connected with a normally closed contact end of the second relay, and a capacitor anode is connected with an emitter of the NPN triode, an anode power input end of the buzzer and an anode power input end of the first relay.