Quantitative liquid discharging device, vehicle-mounted perfume device and perfume pendant

Abstract

This application relates to the field of liquid dispenser technology, and particularly to a portable quantitative dispensing device, a car perfume device, and a perfume pendant for dispensing liquids. The structure of this application achieves the effect of controlling the quantitative dispensing of perfume as needed; especially when used as a car air freshener or pendant, the user can independently determine the amount of perfume dispensed according to their desired fragrance intensity; simultaneously, several pairs of interlocking bosses and grooves are provided at the contact points between the moving parts and the top cover, enabling more precise graded dispensing control, allowing users to easily select the appropriate dispensing amount.

Description

Technical Field

[0001] This application relates to the field of liquid dispenser technology, and in particular to a portable metering device for dispensing liquids, a car perfume device, and a perfume pendant. Background Technology

[0002] The extensive use of plastic or leather interior components in current vehicles often results in unpleasant odors. Combined with the cramped interior space and poor air circulation, this frequently causes discomfort for drivers and passengers. The odor is particularly noticeable in new cars, severely impacting the driving experience. Therefore, car air fresheners or pendants have become common accessories in vehicles.

[0003] Currently, the most common car air fresheners on the market fall into two main categories: one type is the diffuser that allows perfume or solid fragrance to evaporate naturally, such as various car air freshener ornaments or hanging devices. Because the fragrance relies on natural evaporation, the diffuser continues to emit fragrance even after the driver and passengers have parked and closed the doors, resulting in an overly strong and pungent odor the next time the door is opened, leading to a poor user experience and wasting perfume or solid fragrance. The other type is an air freshener that uses electricity to heat and promote evaporation. It uses electric heating or atomization to release fragrance, quickly adding aroma to the car interior. Once the power is off, it stops working and ceases evaporation. This type of product also relies on continuous heating to promote the evaporation of perfume or fragrance; if driving for extended periods, the fragrance can become too strong and the perfume will be used up quickly, causing unnecessary waste. Through long-term use, the applicant has found that the optimal way to use a car air freshener is to release a fixed amount of perfume each time it evaporates, and then release another fixed amount as needed when the fragrance fades or disappears. This allows for precise control of the amount released, maintaining a balanced fragrance in the car and promoting the economical use of perfume.

[0004] Similarly, in existing technologies, to achieve the purpose of quantitatively releasing perfume, Chinese patent CN211592185U discloses a car-mounted intelligent aroma diffuser, including a perfume chamber, an atomizing unit, a control unit, and a power supply. The perfume chamber is used to hold perfume; the atomizing unit is used to atomize the perfume in the perfume chamber and disperse it into the air; the control unit is electrically connected to the atomizing unit and is used to control the atomizing unit to turn on and off at set times; the power supply is electrically connected to the atomizing unit and the control unit to supply power to both. This utility model of a car-mounted intelligent aroma diffuser, by setting a control unit that can automatically control the atomizing unit to turn on and off at set times, allows the aroma diffuser to add fragrance to the car at set times and in set quantities, so that the car interior maintains a good fragrance atmosphere, with good fragrance enhancement effect, and can effectively save perfume. However, this device requires access to the vehicle's power supply and its structure is complex, which poses a risk to the vehicle's electrical safety. If the power supply is unavailable, it will affect the normal use of the aroma diffuser. Summary of the Invention

[0005] One of the objectives of this invention application is to overcome the problems described in the prior art and provide a quantitative liquid dispensing device suitable for personal use, especially as a portable device for dispensing perfume in a quantitative manner. This device allows for the accurate quantitative dispensing of liquids (such as perfumes or essential oils) installed within it, achieving the effect of dispensing liquids in a quantitative manner as needed. This avoids the inconvenience of inaccurate dispensing when using pre-filled liquids and the unnecessary losses when using pre-filled liquids.

[0006] The above-mentioned objective of this invention application is achieved through the following technical solutions:

[0007] A quantitative liquid dispensing device, comprising:

[0008] A hollow liquid container, wherein the liquid container has a liquid outlet at the bottom;

[0009] The top cover forms a detachable, tight fit with the top of the liquid container 1;

[0010] An insert is fixedly fitted at the top opening of the liquid container 1 and sealed to the inner wall of the liquid container;

[0011] A pressure rod is movably installed inside the liquid container. Its upper end passes through the inner insert and the top cover in sequence and is fixedly connected to the movable part located above the top cover. The mating positions between the pressure rod and the inner insert and the top cover are respectively provided with gaps for ventilation. An elastic component is also provided between the movable part or the pressure rod and the top cover, which seals the lower end of the pressure rod to the liquid outlet at the bottom of the liquid container.

[0012] The inner insert is a hollow cylindrical structure. The middle part of the pressure rod is provided with a platform ring that matches the inner side wall of the inner insert and can form a seal at the bottom of its inner side wall. An air inlet groove is provided between the inner insert and the platform ring. When the platform ring moves upward from the bottom of the inner insert, the air inlet groove and the gap for ventilation between the pressure rod and the inner insert and the top cover form a connected air channel.

[0013] In one embodiment, to prevent the device from being accidentally operated while placed in a bag and causing liquid leakage, or to prevent bottom leakage when filling liquid, a removable bottom cover is provided at the liquid outlet at the bottom of the liquid container.

[0014] In one embodiment, the outer wall of the insert is sealed to the inner wall of the liquid container, and the inner wall of the insert is sealed to the platform ring by sealing rings.

[0015] In one embodiment, the height of the air inlet groove on the inner sidewall of the insert in the vertical direction needs to be greater than the height of the sealing contact surface formed by the platform ring and the inner sidewall of the insert.

[0016] In one embodiment, to increase the accuracy of quantitative dispensing, a meshing boss and groove structure can be provided at the contact position between the lower bottom surface of the movable part and the upper part of the upper cover. Several pairs of meshing bosses and groove structures can be provided at this position, enabling multi-stage quantitative control of the dispensing volume when the movable part rotates one revolution.

[0017] In another embodiment, this application also provides another quantitative liquid dispensing device that can achieve the same inventive objective, comprising:

[0018] A hollow liquid container, wherein the liquid container has a liquid outlet at the bottom;

[0019] The top cover fits snugly and removably with the top of the liquid container;

[0020] An insert is fixedly fitted at the top opening of a liquid container and sealed to the inner wall of the liquid container.

[0021] A pressure rod is movably installed inside the liquid container. Its upper end passes through the inner insert and is connected to the top cover via an elastic component. The lower end of the pressure rod is provided with a seal for the liquid outlet at the bottom of the liquid container. The top cover is provided with gaps for ventilation at the mating positions between the pressure rod and the inner insert. An elastic component is also provided between the pressure rod and the top cover to seal the lower end of the pressure rod 4 to the liquid outlet at the bottom of the liquid container.

[0022] The inner insert is a hollow cylindrical structure. The middle part of the pressure rod is provided with a platform ring that matches the inner side wall of the inner insert and can form a seal at the bottom of its inner side wall. An air inlet groove is provided between the inner insert and the platform ring. When the platform ring moves upward from the bottom of the inner insert, the air inlet groove connects the gap between the pressure rod and the inner insert and the top cover for ventilation, forming an air channel leading to the interior of the liquid container.

[0023] In another embodiment, this application also provides a simplified quantitative dispensing device that can achieve the same quantitative dispensing objective. Specifically, the contact points between the lower bottom surface of the movable component and the upper part of the top cover are both planar, eliminating the aforementioned interlocking boss and groove structures. A lower pusher is provided at the lower end of the pressure rod, below the seal. After the lower pusher seals the liquid outlet at the bottom of the liquid container with the seal via an elastic component, it extends downward beyond the outlet by a certain length. This allows for quantitative dispensing by either pressing the lower pusher upward or pulling the movable component upward to open the liquid outlet at the bottom of the liquid container.

[0024] In another embodiment, this application also provides a simpler quantitative liquid dispensing device that can achieve the same quantitative liquid dispensing objective. Specifically, the structure of the movable part is further eliminated, and a lower pusher is provided only at the lower end of the pressure rod below the seal. After the lower pusher seals the liquid outlet at the bottom of the liquid container 1 with the seal at the lower end of the pressure rod by the elastic member, it extends downward beyond the liquid outlet for a certain length. In this way, the liquid outlet at the bottom of the liquid container 1 can be opened and quantitative liquid dispensing can be achieved by pressing the lower pusher upward.

[0025] The second objective of this invention is to overcome the problems described in the prior art and provide a perfume device suitable for in-vehicle use. This device allows for the precise dispensing of perfume in a measured manner, achieving the effect of dispensing liquid as needed. This avoids the problem of inaccurate dispensing in existing ordinary car air fresheners, which easily leads to unnecessary waste when using pre-filled liquid. It also avoids the complex structure of existing electronic car air fresheners that require electricity, especially the problem of the air freshener malfunctioning when power is unavailable.

[0026] The above-mentioned objective of this invention application is achieved through the following technical solutions:

[0027] A car air freshener device includes a dispensing device and a ventilated car mount for mounting the dispensing device, wherein the dispensing device includes:

[0028] A hollow liquid container, wherein the liquid container has a liquid outlet at the bottom;

[0029] The top cover fits snugly and removably with the top of the liquid container;

[0030] An insert is fixedly fitted at the top opening of a liquid container and sealed to the inner wall of the liquid container.

[0031] A pressure rod is movably installed inside the liquid container. Its upper end passes through the inner insert and the top cover in sequence and is fixedly connected to the movable part located above the top cover. An elastic component is also provided between the movable part or the pressure rod and the top cover. The elastic component seals the lower end of the pressure rod to the liquid outlet at the bottom of the liquid container.

[0032] The insert is a hollow cylindrical structure. The pressure rod has a platform ring at its center that matches the inner wall of the insert and forms a seal at the bottom of its inner wall. The insert also has an air inlet groove on its inner wall between the upper surface of the platform ring and the top cover. Gaps for ventilation are provided at the mating positions of the pressure rod, the insert, and the top cover. A removable bottom cover is also provided at the liquid outlet at the bottom of the liquid container. The outer wall of the insert is sealed to the inner wall of the liquid container, and the inner wall of the insert is sealed to the platform ring using sealing rings. The vertical height of the air inlet groove on the inner wall of the insert must be greater than the height of the sealing contact surface formed by the platform ring and the inner wall of the insert.

[0033] The quantitative liquid dispensing device is fixedly connected to a vehicle-mounted ventilated bracket, and the bottom of the vehicle-mounted ventilated bracket is also equipped with a liquid suction strip.

[0034] In one embodiment, to facilitate the operation of dispensing liquid by pressing, the upper cover is provided with a support, and a pressure plate with an outwardly extending section is provided between the movable part and the upper cover. The middle part of the pressure plate is axially connected to the support, so that a quantitative liquid can be dispensed by simply pressing the pressure plate down once.

[0035] The third objective of this invention is to overcome the problems described in the prior art and provide a car perfume pendant suitable for in-vehicle use. This device allows for the precise dispensing of perfume in a measured manner, achieving the effect of dispensing liquid as needed. This avoids the problem of inaccurate dispensing in existing ordinary car air fresheners, which easily leads to unnecessary waste when using pre-filled liquid. It also avoids the complex structure of existing car electronic air fresheners that require electricity, causing the air freshener to malfunction when power is unavailable.

[0036] The above-mentioned objective of this invention application is achieved through the following technical solutions:

[0037] A car air freshener pendant includes a dispensing device and a vent cap, wherein the dispensing device comprises:

[0038] A hollow liquid container, wherein the liquid container has a liquid outlet at the bottom;

[0039] The top cover forms a detachable, tight fit with the top of the liquid container 1;

[0040] An insert is fixedly fitted at the top opening of a liquid container and sealed to the inner wall of the liquid container.

[0041] The pressure rod is movably installed inside the liquid container. Its upper end passes through the inner insert and the top cover in sequence and is fixedly connected to the movable part located above the top cover. An elastic component is also provided between the movable part or the pressure rod and the top cover. The lower end of the pressure rod 4 is sealed to the liquid outlet at the bottom of the liquid container by the elastic component.

[0042] The insert is a hollow cylindrical structure. The pressure rod has a platform ring at its center that matches the inner wall of the insert and forms a seal at the bottom of its inner wall. The insert also has an air inlet groove on its inner wall between the upper surface of the platform ring and the top cover. Gaps for ventilation are provided at the mating positions of the pressure rod, the insert, and the top cover. A removable bottom cover is also provided at the liquid outlet at the bottom of the liquid container. The outer wall of the insert is sealed to the inner wall of the liquid container, and the inner wall of the insert is sealed to the platform ring using sealing rings. The vertical height of the air inlet groove on the inner wall of the insert must be greater than the height of the sealing contact surface formed by the platform ring and the inner wall of the insert.

[0043] The vent cap is located at the liquid outlet at the bottom of the liquid container, and the vent cap can be made into a detachable structure; the vent cap is also provided with a liquid suction strip inside.

[0044] In one embodiment, the container contains at least one ingredient or component of a spice mixture or for making a spice mixture. Such at least one ingredient may be a spice, a spice mixture, and / or at least one solvent.

[0045] This application can achieve the following technical effects: Through the above structure, the effect of controlling the quantitative dispensing of perfume on demand can be achieved; especially when used as a car air freshener or pendant, the amount of perfume dispensed can be determined independently according to the user's needs for the intensity of the fragrance; at the same time, several pairs of interlocking bosses and grooves are set at the contact position between the moving part and the top cover, which can achieve more precise graded dispensing control, making it convenient for users to select the dispensing amount according to their needs. Attached Figure Description

[0046] The above-described features and advantages of the invention, and how they are implemented, will now be described in more detail, schematically, with reference to at least one embodiment, in the context of one or more figures.

[0047] Figure 1 This is an overall schematic diagram of the first embodiment of the quantitative liquid dispensing device described in this application.

[0048] Figure 2 yes Figure 1 The embodiment is a cross-sectional view when the bottom of the liquid container is closed.

[0049] Figure 3 yes Figure 1 The embodiment is a cross-sectional view when the bottom of the liquid container is opened.

[0050] Figure 4 This is an exploded view of the first embodiment of the in-vehicle perfume device described in this application.

[0051] Figure 5 yes Figure 4 Overall top view of the embodiment.

[0052] Figure 6 yes Figure 4 The embodiments are in accordance with Figure 5 A cross-sectional view along the BB direction.

[0053] Figure 7 yes Figure 4 The embodiments are in accordance with Figure 5 A cross-sectional view along the AA direction.

[0054] Figure 8 This is an exploded view of the second embodiment of the in-vehicle perfume device described in this application.

[0055] Figure 9 This is an exploded view of the third embodiment of the in-vehicle perfume device described in this application.

[0056] Figure 10 This is an overall schematic diagram of the car perfume pendant described in this application.

[0057] Figure 11 yes Figure 10 Overall top view of the embodiment.

[0058] Figure 12 yes Figure 11 The AA cross-sectional view of the embodiment.

[0059] Figure 13 A cross-sectional view of a second embodiment of the quantitative dispensing device described in this application when the bottom of the liquid container is closed.

[0060] Figure 14 A cross-sectional view of a second embodiment of the quantitative dispensing device described in this application when the bottom of the liquid container is open.

[0061] Figure 15 A cross-sectional view of a third embodiment of the quantitative dispensing device described in this application when the bottom of the liquid container is closed.

[0062] Figure 16 A cross-sectional view of a third embodiment of the quantitative dispensing device described in this application when the bottom of the liquid container is open. Detailed Implementation

[0063] Figure 1 , Figure 2 and Figure 3 The structure of one embodiment of the quantitative liquid dispensing device described in this application is shown, wherein, Figure 1 This is an overall schematic diagram of the quantitative liquid dispensing device described in this application. Figure 2 yes Figure 1The axial cross-sectional view of the embodiment. Figure 3 yes Figure 1 An enlarged schematic diagram of the engagement structure at the contact point between the lower bottom surface of the movable part and the upper part of the upper cover.

[0064] The quantitative liquid dispensing device described in this application includes: a hollow liquid container 1, a top cover 2, an inner insert 3, a pressure rod 4, a movable component 5, an elastic component 6, and a bottom cover 7; the bottom of the hollow liquid container 1 is provided with a liquid outlet 11; the top cover 2 and the top of the liquid container 1 are detachably and tightly fitted by means of threads or snaps; the inner insert 3 is fixedly sleeved at the top opening of the liquid container 1 and is sealed to the inner wall of the liquid container 1 by a sealing ring 31; the pressure rod 4 is movably installed on the liquid container 1. Inside, its upper end passes through the inner insert 3 and the top cover 2 in sequence and is fixedly connected to the movable part 5 located above the top cover 2 by screws 21; an elastic component 6 is also provided between the movable part 5 or the pressure rod 4 and the top cover, and a sealing component 51 is provided at the lower end of the pressure rod 4. The sealing component 51 at the lower end of the pressure rod 4 seals the liquid outlet 11 at the bottom of the liquid container 1 by the elastic component 6; the inner insert 3 is a hollow cylindrical structure, and a platform ring 41 is provided in the middle of the pressure rod 4. The platform ring 41 matches the inner side wall of the inner insert 3 and forms a seal at the bottom of the inner side wall of the inner insert 3 by a sealing ring 42. An air inlet groove 32 is also provided on the inner side wall between the upper surface of the platform ring 41 and the top cover 2 of the inner insert 3. A gap for ventilation is provided at the mating position between the pressure rod 4 and the inner insert 3 and the top cover 2. To prevent the device from being accidentally operated while placed in a bag and causing liquid leakage, a removable bottom cover 7 is provided at the liquid outlet 11 at the bottom of the liquid container 1.

[0065] To facilitate the rapid formation of an air channel and increase the smoothness of liquid discharge, the height of the air inlet groove 32 on the inner wall of the insert 3 in the vertical direction is preferably set to be greater than the height of the sealing contact surface formed by the platform ring 41 and the inner wall of the insert 3. To increase the accuracy of quantitative liquid discharge, a meshing boss 52 and groove 22 structure can be provided at the contact position between the lower bottom surface of the movable part 5 and the upper part of the upper cover 2. When the movable part 5 is rotated, the protrusion 52 on the lower surface of the movable part 5 gradually moves away from the bottom of the groove 22 on the upper part of the upper cover 2, creating a certain height distance between the lower surface of the movable part 5 and the upper part of the upper cover 2. This causes the movable part 5 to drive the sealing element 51 at the bottom of the pressure rod 4 to open the liquid outlet 11 at the bottom of the liquid container 1, achieving the effect of liquid discharge. Several pairs of meshing protrusions and grooves can be evenly arranged at the above position, allowing for multiple opening and closing of the liquid outlet 11 when the movable part is rotated one revolution, achieving multi-level quantitative control of the liquid discharge. Furthermore, by adjusting the height of the protrusions 52 and grooves 22, the amount of liquid discharged in a single operation can be controlled. The meshing protrusions and grooves can also be implemented using an arc-shaped wave or a gear-like meshing shape.

[0066] In another embodiment, the lower end of the pressure rod 4 is provided with a lower pusher 53 below the seal 51. After the lower pusher 53 seals the liquid outlet 11 at the bottom of the liquid container 1 with the seal 51 at the lower end of the pressure rod 4 by the elastic member 6, it extends downward beyond the liquid outlet 11 for a certain length. In this way, the liquid outlet 11 at the bottom of the liquid container 1 can be opened and dispensed quantitatively by pressing the lower pusher 53 upward.

[0067] Figures 4 to 7 The structure of a first embodiment of a car air freshener device according to this application is shown, wherein, Figure 4 This is an exploded view of the in-vehicle perfume device described in this application. Figure 5 yes Figure 4 Overall top view of the embodiment. Figure 6 and Figure 7 yes Figure 4 The embodiments are in accordance with Figure 5 Cross-sectional views along the AA and BB directions.

[0068] This application discloses a car perfume device, comprising a metering perfume dispenser 100, an absorbent strip 108, and a car mount 109. The metering perfume dispenser includes: a hollow liquid container 101, a top cover 102, an inner insert 103, a pressure rod 104, a movable part 105, an elastic component 106, a bottom cover 107, an absorbent strip 108, and a ventilated car mount 109; the hollow liquid container 101... The bottom is provided with a liquid outlet 1011; the top cover 102 and the top of the liquid container 1 are detachably and tightly fitted by threads or snaps; the inner insert 103 is fixedly sleeved at the top opening of the liquid container 101 and is sealed to the inner wall of the liquid container 101 by a sealing ring 1031; the pressure rod 104 is movably installed inside the liquid container 101, and its upper end passes through the inner insert 103 and the top cover 102 in sequence and is then fixedly connected to the movable part 105 located above the top cover 102 by screws 1021; an elastic component 106 is also provided between the movable part 105 or the pressure rod 104 and the top cover 102, and the lower end of the movable part 105 is provided with a seal. The lower end of the pressure rod 104 is sealed by the sealing element 1051 of the lower end of the pressure rod 104 to seal the liquid outlet 1011 at the bottom of the liquid container 101. The inner insert 103 is a hollow cylindrical structure. The middle part of the pressure rod 104 is provided with a platform ring 1041. The platform ring 1041 matches the inner wall of the inner insert 103 and forms a seal at the bottom of the inner wall of the inner insert 103 through a sealing ring 1042. The inner insert 103 is also provided with an air inlet groove 1032 on the inner wall between the upper surface of the platform ring 1041 and the upper cover 102. The mating position between the pressure rod 104, the inner insert 103, and the upper cover 102 is provided with a gap for ventilation. In order to prevent the device from being accidentally operated and causing liquid leakage when placed in a bag, a removable bottom cover 107 is also provided at the liquid outlet 11 at the bottom of the liquid container 101.

[0069] The vehicle-mounted ventilated bracket 109 is fixedly installed on the outer wall of the liquid container 101, and the bottom of the vehicle-mounted bracket 109 is also provided with a liquid suction strip 108. In order to facilitate the operation of pressing to dispense liquid, a support 1021 is also provided on the upper cover 102. A pressure plate 1052 with an outwardly extending section is provided between the movable part 105 and the upper cover 102. The middle part of the pressure plate 1052 is axially connected to the support 1021. In this way, a quantitative liquid can be dispensed by simply pressing the pressure plate down once.

[0070] In use, the car perfume device in this embodiment is first fixed in the center console or armrest compartment of the car. When it is necessary to add fragrance to the car, simply press down the pressure plate 1052 once. The movable part 105 drives the pressure rod 104 to move upward relative to the hollow liquid container 101, the top cover 102, and the inner insert 103. When the platform ring 1041 of the pressure rod 104 moves upward to a position beyond the air inlet groove 1031 on the inner side wall of the inner insert 103, external air can enter the hollow liquid container 101 through the air channel formed by the gap between the movable part 105 and the top cover 102, the air inlet groove 1031, and the gap between the pressure rod 104 and the inner insert 103. At this time, the seal 1051 at the lower end of the movable part 105 also moves upward, exposing the liquid outlet 1011 at the bottom of the liquid container 101, so that the perfume originally sealed inside the liquid container 101 can flow downward and drip onto the bottom of the car bracket 109. When the user releases the pressure plate 1052, the elastic component 106 presses back the seal 1051 at the lower end of the pressure rod 104 to seal the liquid outlet 1011 at the bottom of the liquid container 101, thus resealing the perfume inside the liquid container 101. To successfully form the aforementioned air passage, the vertical height of the air inlet groove 1031 on the inner wall of the insert 103 must be greater than the height of the sealing contact surface formed by the platform ring 1041 and the inner wall of the insert 103.

[0071] Figure 8 The diagram illustrates the structure of a second embodiment of a car perfume device according to this application. The car perfume device includes a dispensing device 200, an absorbent strip 208, and a car mount 209. The dispensing device 200, the absorbent strip 208, and the car mount 209 are... Figures 4 to 7 The structure is exactly the same as that in the first embodiment, except that the vehicle bracket 209 is different from that in the first embodiment. In this embodiment, a ventilated bracket structure with ventilation holes on the side wall is adopted, which can also achieve the purpose of the invention described in this application.

[0072] Figure 9 This application illustrates the structure of a third embodiment of a car perfume device, which includes a dispensing device 300, an absorbent strip 308, and a car mount 309. The dispensing device 300 differs from that in the first embodiment in that it employs a... Figure 1 , Figure 2 and Figure 3 The quantitative dispensing device described above does not have a support on the upper cover, nor does it have a pressure plate structure on the moving parts. In this embodiment, the car perfume device can achieve the same effect of dispensing a quantitative amount of perfume as needed simply by lifting or rotating the moving parts.

[0073] Figures 10 to 12The structure of one embodiment of the car perfume pendant described in this application is shown, wherein, Figure 10 This is an overall schematic diagram of the car perfume pendant described in this application. Figure 11 yes Figure 10 Overall top view of the embodiment. Figure 12 yes Figure 10 The AA cross-sectional view of the embodiment.

[0074] This application discloses a car perfume pendant, comprising a dispensing device 400 and a vent cap. The dispensing device 400 includes: a hollow liquid container 401, a top cover 402, an inner insert 403, a pressure rod 404, a movable part 405, an elastic part 406, a bottom cover 407, and a liquid-absorbing strip 408. The hollow liquid container 401 has a liquid outlet 4011 at its bottom. The top cover 402 and the top of the liquid container 401 are detachably and tightly fitted by threads or snaps. The inner insert 403 is fixedly sleeved on the liquid container 401. The top opening is sealed to the inner wall of the liquid container 401 by a sealing ring 4031; the pressure rod 404 is movably installed inside the liquid container 401, and its upper end passes through the inner insert 403 and the top cover 402 in sequence, and is then fixedly connected to the movable part 405 located above the top cover 402 by screws 4021; an elastic component 406 is also provided between the movable part 405 or the pressure rod 404 and the top cover 402, and a sealing component 4051 is provided at the lower end of the movable part 405, which seals the liquid outlet 4011 at the bottom of the liquid container 401 by the sealing component 4051 at the lower end of the pressure rod 404 through the elastic component 406;

[0075] The inner insert 403 is a hollow cylindrical structure. A platform ring 4041 is provided in the middle of the pressure rod 404. The platform ring 4041 matches the inner wall of the inner insert 403 and forms a seal at the bottom of the inner wall of the inner insert 403 through a sealing ring 4042. An air inlet groove 4032 is also provided on the inner wall between the upper surface of the platform ring 4041 and the upper cover 402 of the inner insert 403. A gap for ventilation is provided at the mating position 4033 between the pressure rod 404, the inner insert 403, and the upper cover 402. A removable vent cap 407 is also provided at the liquid outlet 4011 at the bottom of the liquid container 401. The vent cap 407 has a vent hole 4071, allowing the perfume to drip into the vent cap 407 after release, enabling the fragrance to evaporate. To better maintain the perfume's continuous evaporation over a longer period, a liquid-absorbing strip 408 is preferably also provided inside the bottom cover 407. For easy hanging, the movable part 405 is also provided with a hanging hole for threading a hanging rope, or the hanging rope can be directly locked to the movable part 405 by screws 4021. The pressure rod 404 is also provided with a liquid injection channel 4049 inside. One end of the liquid injection channel 4049 is located at the top of the pressure rod 404 and is sealed by pressing the sealing member 4048 with screws 4021. The other end opens into the interior of the liquid container 401.

[0076] In use, the top of the car perfume pendant in this embodiment is tied with a hanging rope and hung inside the car. When it is necessary to increase the fragrance in the car, the entire car perfume pendant is gently pulled downwards. Due to the action of the hanging rope, the movable part 405 drives the pressure rod 404 to move upwards relative to the hollow liquid container 401, the top cover 402, and the inner insert 403. When the platform ring 4041 of the pressure rod 404 moves upwards to a position beyond the air inlet groove 4032 on the inner side wall of the inner insert 403, external air can enter the hollow liquid container 401 through the air channel formed by the gap between the movable part 405 and the top cover 402, the air inlet groove 4031, and the gap between the pressure rod 404 and the inner insert 403. At this time, the sealing part 4051 at the lower end of the movable part 405 also moves upwards, exposing the liquid outlet 4011 at the bottom of the liquid container 401, so that the perfume originally sealed inside the liquid container 401 can flow downwards and drip into the vent cover 407. When the user releases the car perfume pendant, the elastic component 406 presses back the sealing element 4051 at the lower end of the pressure rod 404 to seal the liquid outlet 4011 at the bottom of the liquid container 401, thus resealing the perfume inside the liquid container 401. To ensure the formation of the aforementioned air passage, the vertical height of the air inlet groove 4032 on the inner wall of the insert 403 must be greater than the height of the sealing contact surface formed by the platform ring 4041 and the inner wall of the insert 403.

[0077] The quantitative liquid dispensing device described in this application can also achieve the inventive purpose of quantitative liquid dispensing using the following two simplified structures, as follows:

[0078] Figures 13 to 14 The structure of a second embodiment of the quantitative liquid dispensing device described in this application is shown, wherein, Figure 13 This is a cross-sectional view of the second embodiment of the quantitative liquid dispensing device described in this application when the bottom of the liquid container is closed. Figure 14 A cross-sectional view of a second embodiment of the quantitative dispensing device described in this application with the bottom of the liquid container open.

[0079] Compared to the structure of the first embodiment of the quantitative dispensing device described above, the contact points between the lower bottom surface of the movable member 5' and the upper part of the upper cover 2' are both flat, eliminating the interlocking boss and groove structures as in the first embodiment. A lower push member 53' is also provided at the lower end of the pressure rod 4' below the seal 51'. After the elastic member 6 seals the lower end of the pressure rod 4' at the seal 51' of the liquid container 1's bottom outlet 11', the lower push member 53' extends downward beyond the outlet 11' by a certain length. This allows for quantitative dispensing by either pressing the lower push member 53' upwards or pulling the movable member 5' upwards.

[0080] Figures 15-16 The structure of a third embodiment of the quantitative liquid dispensing device described in this application is shown, wherein, Figure 15 A cross-sectional view of the third embodiment of the quantitative liquid dispensing device described in this application when the bottom of the liquid container is closed. Figure 16 A cross-sectional view of the third embodiment of the quantitative liquid dispensing device described in this application when the bottom of the liquid container is closed.

[0081] This embodiment adopts a more simplified structure. Specifically, compared with the structure of the second embodiment of the quantitative liquid dispensing device, the structure of the moving parts is further eliminated. Only the lower end of the pressure rod 4” is provided with a lower pusher 53” below the seal 51”. After the lower pusher 53” seals the liquid outlet 11” at the bottom of the liquid container 1 with the seal 51” at the lower end of the pressure rod 4” through the elastic member 6, it extends downward beyond the liquid outlet 11” for a certain length. In this way, the liquid outlet 11” at the bottom of the liquid container 1” can be opened and quantitative liquid dispensing can be achieved by pressing the lower pusher 53” upward.

[0082] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent changes and modifications made by those skilled in the art within the scope of the technology disclosed in this invention, in accordance with the scope of the patent application of this invention, shall be covered by this invention.

Claims

1. A quantitative liquid dispensing device, characterized in that... include: A hollow liquid container, wherein the liquid container has a liquid outlet at the bottom; The top cover fits snugly and removably with the top of the liquid container; An insert is fixedly fitted at the top opening of a liquid container and sealed to the inner wall of the liquid container. A pressure rod is movably installed inside the liquid container. Its upper end passes through the inner insert and the top cover in sequence and is fixedly connected to the movable part located above the top cover. The mating positions between the pressure rod and the inner insert and the top cover are respectively provided with gaps for ventilation. An elastic component is also provided between the movable part or the pressure rod and the top cover. The lower end of the pressure rod is sealed to the liquid outlet at the bottom of the liquid container by the elastic component. The inner insert is a hollow cylindrical structure. The middle part of the pressure rod is provided with a platform ring that matches the inner side wall of the inner insert and can form a seal at the bottom of its inner side wall. An air inlet groove is provided between the inner insert and the platform ring. When the platform ring moves upward from the bottom of the inner insert, the air inlet groove connects the gap between the pressure rod and the inner insert and the top cover for ventilation to form an air channel leading to the inside of the liquid container. The vertical height of the air intake groove must be greater than the height of the sealing contact surface formed by the platform ring and the inner sidewall of the insert; The lower bottom surface of the movable part is provided with a meshing boss and groove structure at the contact position with the upper part of the upper cover; The liquid container is also equipped with a removable bottom cover at the liquid outlet.

2. The quantitative liquid dispensing device according to claim 1, characterized in that: The inner wall of the insert is sealed to the platform ring by a sealing ring that is fixedly embedded in the outer wall of the platform ring. The bottom inner wall of the insert has a section that forms a sealed section with the sealing ring on the outer wall of the platform ring. The air inlet groove is located above this sealed section.

3. The quantitative liquid dispensing device according to claim 1, characterized in that: The outer wall of the platform ring is provided with an annular inner groove, and a sealing ring that slides up and down is fitted inside the annular inner groove. The top of the annular inner groove is provided with a section that forms a sealed section with the inner wall of the inner insert through the sealing ring. The air inlet groove is located below the sealing section and leads to the outer wall of the platform ring or penetrates the bottom of the platform ring.

4. A quantitative liquid dispensing device, characterized in that... include: A hollow liquid container, wherein the liquid container has a liquid outlet at the bottom; The top cover fits snugly and removably with the top of the liquid container; An inner insert is fixedly fitted at the top opening of the liquid container and sealed to the inner wall of the liquid container. A pressure rod is movably installed inside the liquid container; its upper end passes through the inner insert and is connected to the top cover via an elastic component. The lower end of the pressure rod has a sealing element that mates with the liquid outlet at the bottom of the liquid container. Below the sealing element on the pressure rod, there is a lower top element that seals the liquid outlet at the bottom of the liquid container and extends downward beyond the outlet for a certain length. The top cover has gaps for ventilation at the mating positions between the pressure rod and the inner insert. An elastic component is also provided between the pressure rod and the top cover. The component seals the lower end of the pressure rod to the liquid outlet at the bottom of the liquid container; the inner insert is a hollow cylindrical structure, and the middle part of the pressure rod is provided with a platform ring that matches the inner sidewall of the inner insert and can form a seal at the bottom of its inner sidewall. An air inlet groove is provided between the inner insert and the platform ring. When the platform ring moves upward from the bottom of the inner insert, the air inlet groove connects the gap between the pressure rod, the inner insert, and the top cover to form an air passage to the inside of the liquid container; the vertical height of the air inlet groove must be greater than the height of the sealing contact surface formed by the platform ring and the inner sidewall of the inner insert; a removable bottom cover is also provided at the liquid outlet at the bottom of the liquid container.

5. A car air freshener device, characterized in that: It includes the quantitative liquid dispensing device according to any one of claims 1 to 3; it also includes a vehicle-mounted bracket, which is fixedly connected to the outer wall of the liquid container.

6. The car air freshener device according to claim 5, characterized in that: The upper cover is provided with a support, and a pressure plate with an outwardly extending section is provided between the movable part and the upper cover. The middle part of the pressure plate is axially connected to the support.

7. A car perfume pendant, characterized in that: The device includes the quantitative liquid dispensing device as described in any one of claims 1 to 4; the liquid container is further provided with a removable vent cap at the liquid outlet at the bottom.

8. The car perfume pendant according to claim 7, characterized in that: The quantitative liquid dispensing device is equipped with a hanging rope through hole.

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