Vehicle-mounted intelligent fragrance generator

A vehicle-mounted intelligent fragrance generator includes a casing and a plurality of essence boxes. The casing includes a base. Each essence box includes an outer sleeve, an inner sleeve, an essence block and a fragrance front cover, the outer sleeve has a protrusion, and the protrusion is disposed at a front end portion of an inner wall of the outer sleeve. A rear end of the inner sleeve is a closed end, a front end is an open end, and the front end of an outer wall of the inner sleeve is provided with an anti-rotation strip. The outer sleeve is fixed inside the base, the outer sleeve, the inner sleeve and the essence block are sequentially sleeved, the front end of the inner sleeve protrudes from the outer sleeve and extends out of the base, and the anti-rotation strip is clamped on the protrusion of the outer sleeve.

CROSS REFERENCE TO THE RELATED APPLICATIONS

This application is based upon and claims priority to Chinese Patent Application No. 202122264841.1, filed on Sep. 17, 2021, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present invention relates to the field of fragrance devices, in particular to a vehicle-mounted intelligent fragrance generator.

BACKGROUND

A fragrance device can release different fragrance scents into the air by the aid of an essence source, improve the exterior space environment, and create a comfortable atmosphere for users. At present, the fragrance device is often mounted in a car or indoors to improve the in-car environment or indoor environment. The fragrance device generally includes a draft fan, a motor, a shunt shaft sleeve, a shunt rotor, an essence box and the like. Since there are a great variety of components, the current fragrance device generally includes a fixing bracket for mounting the components such as the shunt shaft sleeve, the shunt rotor and the essence box. As a result, the volume of the fragrance device is too large. When the fragrance device is mounted in the car, it is hard to place and takes up too much space since there is only a small space for placement in the car.

SUMMARY

In order to solve the above technical problems, the present invention provides a vehicle-mounted fragrance generator whose lateral dimension can be greatly reduced.

The technical solution of the present invention is as follows: provided is a vehicle-mounted intelligent fragrance generator, including a casing and a plurality of essence boxes. The casing includes a base. Each of the essence boxes includes an outer sleeve, an inner sleeve, an essence block and a fragrance front cover, the outer sleeve has a protrusion, and the protrusion is disposed at a front end portion of an inner wall of the outer sleeve. A rear end of the inner sleeve is a closed end, a front end is an open end, and the front end of an outer wall of the inner sleeve is provided with an anti-rotation strip. The outer sleeve is fixed inside the base, the outer sleeve, the inner sleeve and the essence block are sequentially sleeved, the front end of the inner sleeve protrudes from the outer sleeve and extends out of the base, and the anti-rotation strip is clamped on the protrusion of the outer sleeve. The fragrance front cover is located outside the base and fastened to a front end portion of the inner sleeve.

The structure of the essence boxes is brand-new. The essence boxes of this structure can be directly placed inside the base of the casing, and the fragrance switching assembly can be directly placed on the essence boxes. Therefore, the volume of the fragrance generator is effectively reduced, and the space taken up by the fragrance generator is reduced.

Preferably, a force applied on the anti-rotation strip by the protrusion of the outer sleeve is F1. One side of the base is provided with a plurality of through holes, a convex ring is disposed in each of the through holes, and the convex ring is broken to form at least one notch and at least one arc strip. The front end of the outer wall of the inner sleeve is further provided with at least one L-shaped protruding strip, and the L-shaped protruding strip is located at the front of the anti-rotation strip. The front end of the inner sleeve extends out of the through hole of the base, a vertical edge of the L-shaped protruding strip is located in the notch, the L-shaped protruding strip is stopped by the arc strip, a circumferential force applied on the L-shaped protruding strip by the arc strip is F2, and F2and F1are opposite in direction. The inner sleeve receives the forces F2and F1in two opposite directions along the circumferential direction, and can be well fixed in the outer sleeve and the base.

Preferably, the outer sleeves are disposed in parallel and integrally formed, and a connecting rib is integrally formed between every two adjacent outer sleeves.

Preferably, the vehicle-mounted intelligent fragrance generator further includes a main control printed circuit board assembly (PCBA) board and an identification circuit board for identifying the type of fragrance. The main control PCBA board and the identification circuit board are in communication connection. The identification circuit board is provided with a plurality of pin connector groups. An identity (ID) identification chip is embedded in a rear end portion of each of the inner sleeves, and each of the pin connector groups is respectively connected to the corresponding one ID identification chip.

Preferably, the vehicle-mounted intelligent fragrance generator further includes a draft fan and a fragrance switching assembly. The casing further includes a first air inlet14and a first air outlet. The outer sleeve further has an air inlet pipe port and an air outlet pipe port, and the outer wall of the inner sleeve has a plurality of fragrance diffusion holes. The air inlet pipe port communicates with one fragrance diffusion hole, and the air outlet pipe port communicates with another fragrance diffusion hole. The air inlet pipe port and the air outlet pipe port of one of the outer sleeves respectively communicate with an intake opening and a discharge opening of the draft fan through the fragrance switching assembly. The intake opening of the draft fan communicates with the first air inlet14, and the discharge opening of the draft fan communicates with the first air outlet.

Preferably, the casing further includes an upper casing, and the upper casing is buckled on the base to form a containing cavity. The first air inlet14and the first air outlet are disposed in the upper casing. The draft fan and the fragrance switching assembly are both located in the containing cavity, and the draft fan, the fragrance switching assembly and the outer sleeve are sequentially disposed from top to bottom. The draft fan, the fragrance switching assembly and the outer sleeve are sequentially disposed from top to bottom, thereby effectively saving the lateral space and greatly reducing the volume of the fragrance generator.

Preferably, the fragrance switching assembly includes a shunt shaft sleeve, a shunt rotor and a motor. The shunt shaft sleeve is provided with a first air inlet pipe connector, a second air outlet and three sets of air pipes, the first air inlet pipe connector communicates with the first air inlet through the draft fan, and the second air outlet communicates with the first air outlet through the draft fan. Each set of air pipes includes an air inlet pipe and an air outlet pipe, the air inlet pipe communicates with the air inlet pipe port of one of the outer sleeves, and the air outlet pipe communicates with the air outlet pipe port of the outer sleeve. The shunt rotor includes a plurality of third air inlets, a lead-in port and a lead-out port. The plurality of third air inlets are distributed along a circumferential direction of the shunt rotor, and the lead-in port, the lead-out port and one of the third air inlets are distributed along an axial direction of the shunt rotor. The shunt rotor is rotatably disposed inside the shunt shaft sleeve. The first air inlet pipe connector communicates with one of the third air inlets and forms a clearance seal fit with the third air inlet. The air inlet pipe communicates with the lead-in port through a first channel inside the shunt rotor, and the lead-out port communicates with the second air outlet through a second channel inside the shunt rotor. The motor drives the shunt rotor to rotate in the shunt shaft sleeve.

Preferably, the vehicle-mounted intelligent fragrance generator further includes a travel switch. The travel switch includes a motor, a control dial, a photoelectric switch and a main control PCBA board4. The motor drives the shunt rotor to rotate, the control dial is mounted on the shunt rotor, and the motor and the photoelectric switch are both electrically connected to the main control PCBA board4. The control dial forms a clearance fit in the photoelectric switch, the control dial is provided with a plurality of sets of signal modules, each set of signal modules includes a locating module and a judgment module, the locating module is disposed next to the judgment module, and the judgment modules in the sets of signal modules are different.

Preferably, the judgment module includes at least one short hole, and the number of the short holes in each judgment module is different. The locating module includes one long hole. A depth of the short hole is less than a depth of the long hole.

The present invention has the following advantages: the essence boxes can be directly placed inside the base of the casing, the fragrance switching assembly can be directly placed on the essence boxes, and the essence boxes and the fragrance switching assembly can be fixed without an additional fixing bracket, thereby saving the parts and simplifying the structure. Therefore, the volume of the fragrance generator is effectively reduced, and the space taken up by the fragrance generator is reduced.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described with reference to the accompanying drawings below are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.

A front end portion of an inner sleeve22refers to the end portion at an open end223of the inner sleeve22, and a rear end portion of the inner sleeve22refers to the end portion at a closed end222of the inner sleeve22. The direction of the front and rear ends of the outer sleeve21is the same as the direction of the front and rear ends of the inner sleeve22.

Referring toFIGS.1-4, a vehicle-mounted intelligent fragrance generator100includes a casing1, a draft fan6, a fragrance switching assembly7, a plurality of essence boxes2, a main control PCBA board4, an identification circuit board5for identifying the type of fragrance, and a travel switch K. The casing1includes an upper casing13, a base11, a first air inlet14and a first air outlet12. The upper casing13is buckled on the base11to form a containing cavity j. The first air inlet14and the first air outlet12are disposed in the upper casing13.

Referring toFIG.3, in this embodiment, there are 3 essence boxes2. The essence boxes2respectively have different fragrance scents. Each of the essence boxes2includes an outer sleeve21, an inner sleeve22, an essence block23and a fragrance front cover24. The outer sleeves21are disposed in parallel and integrally formed, and a connecting rib3is integrally formed between every two adjacent outer sleeves21. The outer sleeves21are connected into an integral structure through the connecting ribs3to become a whole, which is more convenient for assembly and can be directly and stably fixed in the base11without scattering. Thus, the fragrance switching assembly7can be directly placed on the outer sleeves21, and the essence boxes2and the fragrance switching assembly7can be fixed together without using a fixing bracket, thereby saving the component fixing bracket, and greatly reducing the volume of the fragrance generator100. Therefore, the components of the fragrance generator100can be well placed in a small space.

Referring toFIG.1,FIG.3andFIGS.5-6, the outer sleeve21has an air inlet pipe port211, an air outlet pipe port212and a protrusion213, and the protrusion213is disposed at a front end portion of an inner wall of the outer sleeve21. A rear end of the inner sleeve22is a closed end222, a front end is an open end223, an outer wall of the inner sleeve22has a plurality of fragrance diffusion holes227, and the front end of an outer wall of the inner sleeve22is provided with an anti-rotation strip224. The front end of the outer wall of the inner sleeve22is further provided with at least one L-shaped protruding strip225, and the L-shaped protruding strip225is located at the front of the anti-rotation strip224. The outer sleeve21is fixed inside the base11, the outer sleeve21, the inner sleeve22and the essence block23are sequentially sleeved, the front end of the inner sleeve22protrudes from the outer sleeve21and extends out of the base11, and the anti-rotation strip224is clamped on the protrusion213of the outer sleeve21. A force applied on the anti-rotation strip224by the protrusion213of the outer sleeve21is F1. The disposition of the outer sleeve21and the inner sleeve22can prevent the essence blocks with different fragrance scents from tainting each other. The fragrance front cover24is located outside the base11and fastened to a front end portion of the inner sleeve22. The fragrance front cover24and the inner sleeve22are connected detachably or non-detachably. When the essence block23needs to be replaced, the fragrance front cover24and the inner sleeve22can be connected detachably, and the fragrance front cover24serves as a holding part. When the essence block23needs to be replaced, the fragrance front cover24can be held to pull out the inner sleeve22and the essence block23together, and then the essence block23is replaced. Thus, the essence block in any one of the essence boxes2can be replaced independently without disassembling the casing1. The air inlet pipe port211communicates with one fragrance diffusion hole227, and the air outlet pipe port212communicates with another fragrance diffusion hole227. The air inlet pipe port211and the air outlet pipe port212of one of the outer sleeves21respectively communicate with the first air inlet14and the first air outlet12in one-to-one correspondence sequentially through the fragrance switching assembly7and the draft fan6. That is, the air inlet pipe port211and the air outlet pipe port212of one of the outer sleeves21respectively communicate with an intake opening and a discharge opening61of the draft fan6through the fragrance switching assembly7. The intake opening of the draft fan6communicates with the first air inlet14, and the discharge opening61of the draft fan6communicates with the first air outlet12.

Referring toFIGS.1-2andFIGS.5-6, one side of the base11is provided with a plurality of through holes111, a convex ring112is disposed in each of the through holes111, and the convex ring112is broken to form at least one notch1121and at least one arc strip1122. The front end of the inner sleeve22extends out of the through hole111of the base11, a vertical edge of the L-shaped protruding strip225is located in the notch1121, the L-shaped protruding strip225is stopped by the arc strip1122, a circumferential force applied on the L-shaped protruding strip225by the arc strip1122is F2, and F2and F1are opposite in direction. The arc strip1122clamps the vertical edge of the L-shaped protruding strip225, which can prevent the inner sleeve22from rotation and locate the inner sleeve22in the circumferential direction. A lateral edge of the L-shaped protruding strip225is clamped by an inner bottom surface of the arc strip1122, which can prevent the inner sleeve22from coming off the through hole111of the base11along the axial direction and locate the inner sleeve22in the axial direction. The forces F2and F1are opposite in direction, and the inner sleeve22receives the forces F2and F1in two opposite directions along the circumferential direction, and so the inner sleeve22can be well fixed in the outer sleeve21and the base11. A width of the notch1121is equal to or greater than a length of the lateral edge of the L-shaped protruding strip225, so when a component such as the inner sleeve22is inserted into the base11, the notch1121can give way to the L-shaped protruding strip225of the inner sleeve22.

Referring toFIGS.3-4andFIGS.6-7, the fragrance switching assembly7includes a shunt shaft sleeve71, a shunt rotor72and a motor73. The shunt shaft sleeve71is provided with a first air inlet pipe connector711, a second air outlet712and three sets of air pipes713, the first air inlet pipe connector711communicates with the first air inlet14through the draft fan6, and the second air outlet712communicates with the first air outlet12through the draft fan6(the discharge opening61of the draft fan6). Each set of air pipes713includes an air inlet pipe7131and an air outlet pipe7132, the air inlet pipe7131communicates with the air inlet pipe port211of one of the outer sleeves21, and the air outlet pipe7132communicates with the air outlet pipe port212of the outer sleeve21. The shunt rotor72includes a plurality of third air inlets721, a lead-in port722and a lead-out port723. The plurality of third air inlets721are distributed along a circumferential direction of the shunt rotor72, and the lead-in port722, the lead-out port723and one of the third air inlets721are distributed along an axial direction of the shunt rotor72. The shunt rotor72is rotatably disposed inside the shunt shaft sleeve71. The motor73drives the shunt rotor72to rotate in the shunt shaft sleeve71. The first air inlet pipe connector711communicates with one of the third air inlets721and forms a clearance seal fit with the third air inlet721. The air inlet pipe7131communicates with the lead-in port722through a first channel a inside the shunt rotor72, and the lead-out port723communicates with the second air outlet712through a second channel b inside the shunt rotor72. The draft fan6and the fragrance switching assembly7are both located in the containing cavity j, and the draft fan6, the fragrance switching assembly7and the outer sleeve21are sequentially disposed from top to bottom. The draft fan6, the fragrance switching assembly7and the outer sleeve21are sequentially disposed from top to bottom, thereby effectively saving the lateral space and greatly reducing the volume of the fragrance generator100. The essence boxes2have different fragrance scents. Air flows through the first air inlet14, the intake opening of the draft fan6, the first air inlet pipe connector711of the shunt shaft sleeve71, one of the third air inlets721of the shunt rotor72, the first channel a inside the shunt rotor72, the air inlet pipe7131of the shunt shaft sleeve71and the air inlet pipe port211of one of the outer sleeves21, and is mixed with the essence in the essence box2to form fragrance gas. Then, the fragrance gas flows through the air outlet pipe port212of the outer sleeve21, the air outlet pipe7132, the lead-out port723of the shunt rotor72, the second channel b inside the shunt rotor72, the second air outlet712, the air outlet pipe port212and the first air outlet12, and is finally released to the exterior space environment to improve the space environment of the user. To switch among the fragrance scents, the user only needs to rotate the shunt rotor72to make the lead-in port722and the lead-out port723of the shunt rotor72respectively connected to another set of air inlet pipe7131and air outlet pipe7132, so that the air can communicate with the corresponding essence box2. Switching among different fragrance scents can satisfy preferences of different users.

Referring toFIG.3andFIG.10, the upper casing13is further provided with a second air inlet15, and the shunt shaft sleeve71is further provided with a second air inlet pipe connector714. The second air inlet pipe connector714communicates with the second air inlet15, and the second air inlet pipe connector714forms a clearance seal fit with the lead-out port723in the shunt rotor72. During operation, the user can also rotate the shunt rotor72to make the lead-out port723in the shunt rotor72communicate with the second air inlet pipe connector714. At this time, even if the first air inlet14communicates with the third air inlet721through the first air inlet pipe connector711, there is no air flow in the first channel a in the shunt rotor72since the lead-in port722is in a closed state. Under the action of the draft fan6, the air sequentially flows through the second air inlet15(not shown), the second air inlet pipe connector714, the lead-out port723, the second channel b in the rotor, the second air outlet712, the draft fan6and the first air outlet12, and is blown to the exterior space environment to form natural wind with no fragrance scent, thereby increasing the use functions of the fragrance generator.

Referring toFIG.3andFIGS.11-12, the travel switch K includes a motor73, a control dial8, a photoelectric switch9and a main control PCBA board4. The motor73drives the shunt rotor72to rotate, the control dial8is mounted on the shunt rotor72, and the motor73and the photoelectric switch9are both electrically connected to the main control PCBA board4. The control dial8forms a clearance fit in the photoelectric switch9, the control dial8is provided with a plurality of sets of signal modules81, each set of signal modules81includes a locating module811and a judgment module812, the locating module811is disposed next to the judgment module812, and the judgment modules812in the sets of signal modules81are different. The judgment module812includes at least one short hole8121, and the number of the short holes8121in each judgment module812is different. The locating module811includes one long hole8111. A depth of the short hole8121is less than a depth of the long hole8111. In this embodiment, the control dial8is provided with four different sets of signal modules81. The four different sets of signal modules81respectively correspond to four operating states of the fragrance switching assembly7, three of which are the operating states in which the air respectively communicates with the three essence boxes2and the other is the operating state in which the air communicates with the second air inlet15.

Referring toFIG.3andFIGS.10-11, during the operation, the main control PCBA board4can distinguish different operating states of the fragrance switching assembly7through the judgment module812and control the fragrance switching assembly7to execute the corresponding operating state through the locating module811. For example, when the user needs the fragrance switching assembly7to execute the operating state in which the air communicates with the second air inlet15, the main control PCBA board4firstly controls the motor73to operate, the motor73drives the shunt rotor72to rotate on the shunt shaft sleeve, and the control dial8mounted on the shunt rotor72rotates along with the shunt rotor72and rotates in the photoelectric switch9. The signal modules81on the control dial8sequentially pass through the photoelectric switch9as the control dial rotates. After the judgment module812in the signal module81corresponding to the above operating state passes through the photoelectric switch9, the main control PCBA board4makes an identification and a determination, then the locating module811in the signal module81passes through the photoelectric switch9, the main control PCBA board4makes an identification and a determination, and controls the motor73to give a response and perform execution, that is, to stop rotation, so that the shunt rotor72stops at the operating state in which the air communicates with the second air inlet15.

Referring toFIG.3andFIGS.11-12, the judgment module812includes at least one short hole8121, and the number of the short holes8121in each judgment module812is different. The locating module811includes one long hole8111. A depth of the short hole8121is less than a depth of the long hole8111. In this embodiment, the four sets of signal modules81on the control dial8are: the first signal module81including 1 short hole8121and 1 long hole8111, the second signal module81including 2 short holes8121and 1 long hole8111, the third signal module81including 3 short holes8121and 1 long hole8111, and the fourth signal module81including 4 short holes8121and 1 long hole8111. The four different sets of signal modules81respectively correspond to four operating states of the fragrance switching assembly7. During the rotation of the control dial8, the photoelectric switch9scans the short hole8121and the long hole8111in the control dial8, thereby generating high and low voltage signals with different time lengths. When the short hole8121passes through the photoelectric switch9, a short-time signal is generated. When the long hole8111passes through the photoelectric switch9, a long-time signal is generated. The main control PCBA board4controls the motor73according to the short-time signals and the long-time signal collected by the photoelectric switch9. Different numbers of the short-time signals are used as a judgment signal, and the long-time signal is used as an execution signal. In the present invention, the travel switch K configured to control the rotation of the shunt rotor72is disposed. Through the fit between the photoelectric switch9and the control dial8, the travel switch K provides the main control PCBA board4with a basis for identifying and controlling the operating state of the fragrance switching assembly7. On such a basis, the main control PCBA board4controls the motor73and further controls the shunt rotor72, thereby realizing intellectual operation on the control of the rotation of the shunt rotor72.

Referring toFIGS.3-4andFIG.6, the main control PCBA board4and the identification circuit board5are in communication connection. The identification circuit board5is provided with a plurality of pin connector groups51. An ID identification chip226is embedded in a rear end portion of each of the inner sleeves22, and each of the pin connector groups51is respectively connected to the corresponding one ID identification chip226. The ID identification chip226is used to record the type of fragrance and other fragrance ID information of the essence box2, so that the essence box2is identifiable. The identification circuit board5can read the ID identification chip226, and send the read information such as the type of fragrance to the main control PCBA board4. Then the information is sent by the main control PCBA board4to a terminal for display, such that the user can select the type of fragrance. The terminal may be a mobile terminal or a vehicle-mounted display screen.

In the present invention, the structure of the essence boxes2is brand-new. The essence boxes2can be directly placed inside the base11of the casing1, the fragrance switching assembly7can be directly placed on the essence boxes2, and the essence boxes2and the fragrance switching assembly7can be fixed without an additional fixing bracket, thereby saving the parts and simplifying the structure. Therefore, the volume of the fragrance generator100is effectively reduced, and the space taken up by the fragrance generator100is reduced.

In the description of the present invention, the terms “first” and “second” are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present invention, “a plurality of” means two or more than two, unless otherwise specifically defined.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary, and cannot be construed as limiting the present invention. Changes, modifications, replacements and variations of the above embodiments may be made by those of ordinary skill in the art within the scope of the present invention.