Eccentric stop structure of sprayer

Abstract

The utility model discloses an eccentric stop structure of a sprayer, and belongs to the technical field of sprayers. Comprising a shell; a capillary holder; the two ends of the stop spring abut against the inner wall of the shell and the eccentric wheel respectively, and the capillary tube base penetrates through the eccentric wheel. The release button is connected with the eccentric wheel; when the capillary tube seat moves downwards to be separated from the eccentric wheel, the stop spring pushes the eccentric wheel to the top of the capillary tube seat and axially limits the capillary tube seat, at the moment, the sprayer completes extraction of liquid medicine, and meanwhile the release button pops up outwards; when the release button is pressed down, the capillary tube seat can reset upwards, and the sprayer completes the spraying action in the upward resetting process of the capillary tube seat. Through the linkage effect of the capillary tube seat, the stop spring, the eccentric wheel and the release button, the locking and releasing actions are added between the action of extracting liquid medicine and the action of spraying the liquid medicine by the sprayer, and the waste of the liquid medicine caused by misoperation is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of sprayers, and particularly relates to an eccentric stop structure of a sprayer. Background Art

[0002] The atomization inhalation method uses a high-speed oxygen flow to form the liquid medicine into a mist, which is then inhaled through the respiratory tract to achieve the purpose of treatment, treat respiratory tract infections, eliminate inflammation and edema, relieve spasms, dilute the liquid medicine, and help expectorate phlegm. At present, a portable sprayer has been designed, which is internally provided with a liquid medicine bottle. When in use, the liquid medicine in the liquid medicine bottle is automatically sprayed out in the form of a spray, which is more convenient to use.

[0003] When this portable sprayer is in use, it has two action processes. It is necessary to first extract the liquid medicine and then spray the liquid medicine. To prevent misoperation, this sprayer needs to be locked after extracting the liquid medicine. Only when the spray button is pressed, the sprayer will perform the spraying action. However, for the current sprayers, the structural design for locking and releasing after extracting the liquid medicine is unreasonable, and there is still a possibility of misoperation. Summary of the Utility Model

[0004] The utility model aims at the above problems existing in the prior art, and proposes an eccentric stop structure of a sprayer that can avoid the spray action of the sprayer caused by misoperation.

[0005] The utility model can be realized by the following technical solutions:

[0006] An eccentric stop structure of a sprayer, comprising:

[0007] A housing;

[0008] A capillary seat, which realizes the extraction and spraying of the liquid medicine by the sprayer through its axial movement;

[0009] A stop spring and an eccentric wheel, both ends of the stop spring are respectively abutted against the inner wall of the housing and the eccentric wheel, and the capillary seat passes through the eccentric wheel;

[0010] A release button, which is connected to the eccentric wheel;

[0011] When the capillary seat moves downward to disengage from the eccentric wheel, the stop spring pushes the eccentric wheel to the top of the capillary seat and axially limits the capillary seat. At this time, the sprayer completes the extraction of the liquid medicine, and at the same time, the release button pops outwards;

[0012] When the release button is pressed, the capillary seat can be reset upwards, and the sprayer completes the spraying action during the upward reset of the capillary seat.

[0013] As a further improvement of the present utility model, the capillary seat has a highest point position and a lowest point position within the housing.

[0014] As a further improvement of the present utility model, a supply pressure spring is further provided within the housing, and the supply pressure spring is disposed at the bottom of the capillary seat.

[0015] As a further improvement of the present utility model, in the initial state, the capillary seat is always at the highest point position under the support of the supply pressure spring, and at this time, the eccentric wheel is sleeved outside the capillary seat.

[0016] As a further improvement of the present utility model, when and only when the capillary seat moves to the lowest point position, the capillary seat is separated from the eccentric wheel, and the stop spring pushes the eccentric wheel to move and axially limit the capillary seat.

[0017] As a further improvement of the present utility model, when the release button is pressed, the eccentric wheel is pushed to reset, and the capillary seat is reset upward to the highest point position under the action of the supply pressure spring.

[0018] As a further improvement of the present utility model, an installation groove is provided at one end of the eccentric wheel close to the stop spring, and one end of the stop spring is embedded in the installation groove.

[0019] As a further improvement of the present utility model, the stop spring and the release button are symmetrically disposed on both sides of the eccentric wheel.

[0020] As a further improvement of the present utility model, double-sided slide buttons are provided on both sides of the capillary seat, and the capillary seat is driven to move by pressing down the double-sided slide buttons.

[0021] As a further improvement of the present utility model, a sliding opening for the double-sided slide buttons to slide is formed on the side wall of the housing, and the upper and lower ends of the sliding opening are the highest point position and the lowest point position of the double-sided slide buttons and the capillary seat.

[0022] Compared with the prior art, the present utility model has the following beneficial effects:

[0023] 1. Through the linkage effect among the capillary seat, the stop spring, the eccentric wheel, and the release button, a locking and releasing action is added between the two actions of the sprayer for extracting the liquid medicine and spraying the liquid medicine. Even if the sprayer extracts the liquid medicine due to misoperation, the sprayer will automatically lock, avoiding the waste of the liquid medicine;

[0024] 2. After the sprayer completes the operation of sucking the liquid medicine, the pop-up of the release button is an obvious user feedback, informing the user that the liquid medicine is ready and the next operation can be carried out, that is, pressing the release button for spraying. This instant feedback reduces operation errors and improves user confidence and satisfaction;

[0025] 3. Through the mechanical linkage of the eccentric wheel, the stop spring, the release button and the capillary seat, the whole drug delivery process becomes smooth and efficient. Without an additional power source, the liquid medicine can be inhaled, stored and sprayed only relying on mechanical principles. And this mechanical locking mechanism also ensures that the liquid medicine will not be accidentally released in the non-activated state, improving the safety of use. Brief Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the eccentric stop structure of the sprayer of the present utility model;

[0027] Figure 2 is a cross-sectional view of the sprayer of the present utility model;

[0028] Figure 3 is a cross-sectional view of the sprayer of the present utility model from another perspective.

[0029] In the figure, 100, housing; 110, capillary seat; 111, double-sided sliding button; 112, capillary; 1121, one-way valve; 120, stop spring; 130, eccentric wheel; 131, installation groove; 140, release button; 150, pressure supply spring; 200, spray assembly; 210, liquid storage cavity. Detailed Embodiment

[0030] The following are specific embodiments of the present utility model and in combination with the drawings, the technical methods of the present utility model are further described, but the present utility model is not limited to these embodiments.

[0031] As Figures 1-3 shown, the present utility model provides an eccentric stop structure of a sprayer, including:

[0032] housing 100;

[0033] capillary seat 110, which realizes the sucking and spraying of the liquid medicine by the sprayer through its axial movement;

[0034] stop spring 120 and eccentric wheel 130, both ends of the stop spring 120 are respectively in contact with the inner wall of the housing 100 and the eccentric wheel 130, and the capillary seat 110 passes through the eccentric wheel 130;

[0035] release button 140, which is connected to the eccentric wheel 130;

[0036] When the capillary seat 110 moves downward to be separated from the eccentric wheel 130, the stop spring 120 pushes the eccentric wheel 130 to the top of the capillary seat 110 and axially limits the capillary seat 110. At this time, the sprayer completes the extraction of the liquid medicine, and the release button 140 pops outward.

[0037] When the release button 140 is pressed, the capillary tube holder 110 can be reset upward, and the sprayer completes the spraying action during the process of the capillary tube holder 110 being reset upward.

[0038] It is worth mentioning that there is a linkage effect between the capillary seat 110, the stop spring 120, the eccentric wheel 130, and the release button 140 in this embodiment. When the capillary seat 110 moves downward, the sprayer extracts the liquid medicine. After the extraction is completed, the eccentric wheel 130 automatically moves under the action of the stop spring 120 and axially limits the capillary seat 110.

[0039] Because the spraying action of the sprayer needs to rely on the process of the capillary seat 110 resetting upward, once the eccentric wheel 130 axially limits the capillary seat 110 to prevent it from resetting upward, the locking function of the sprayer after extracting the liquid medicine can be realized. When the sprayer needs to spray, it only needs to press the release button 140 to release the lock of the capillary seat 110 by the eccentric wheel 130.

[0040] That is to say, through the linkage between the capillary seat 110, the stop spring 120, the eccentric wheel 130 and the release button 140, the sprayer adds a locking and releasing action between the two actions of extracting and spraying the medicine liquid. Even if the sprayer extracts the medicine liquid due to misoperation, the sprayer will automatically lock to avoid waste of the medicine liquid.

[0041] In addition, when the sprayer completes the action of extracting the liquid medicine, the popping out of the release button 140 is an obvious user feedback, informing the user that the liquid medicine is ready and can proceed to the next step, that is, pressing the release button 140 to spray. This instant feedback reduces operating errors and improves user confidence and satisfaction.

[0042] And through the mechanical linkage of the eccentric wheel 130, the stop spring 120, the release button 140 and the capillary holder 110, the entire drug administration process becomes smooth and efficient. No additional power source is required, and the inhalation, storage and injection of the drug solution can be completed only by relying on mechanical principles. This mechanical locking mechanism also ensures that the drug solution will not be accidentally released in the non-activated state, thereby improving the safety of use.

[0043] Preferably, the capillary seat 110 has a highest point position and a lowest point position within the housing 100. By setting the maximum stroke of the capillary seat 110, the injection volume of the liquid medicine for a single operation is converted, thereby ensuring that the patient uses the standard dosage each time and achieving the purpose of quantitative drug administration.

[0044] Preferably, a pressure supply spring 150 is further provided within the housing 100. The pressure supply spring 150 is disposed at the bottom of the capillary seat 110 and the two are on the same vertical axis.

[0045] Specifically, in the initial state, the capillary seat 110 is always at the highest point position under the support of the pressure supply spring 150. At this time, the eccentric wheel 130 is sleeved outside the capillary seat 110, and the stop spring 120 is in a compressed state.

[0046] Only when the capillary seat 110 moves to the lowest point position, the capillary seat 110 is separated from the eccentric wheel 130, and the stop spring 120 pushes the eccentric wheel 130 to move and axially limit the capillary seat 110. That is to say, only when a complete liquid medicine extraction action is completed, the eccentric wheel 130 will play a limiting role on the capillary seat 110, thereby achieving the purpose of extracting the same amount of liquid medicine each time.

[0047] When the release button 140 is pressed, the eccentric wheel 130 is pushed to reset, and the capillary seat 110 is reset upward to the highest point position under the action of the pressure supply spring 150. At this time, the sprayer completes the spraying action.

[0048] Preferably, an installation groove 131 is provided at one end of the eccentric wheel 130 close to the stop spring 120, and one end of the stop spring 120 is embedded in the installation groove 131 to ensure that the stop spring 120 can maintain stable contact when the eccentric wheel 130 moves.

[0049] Preferably, the stop spring 120 and the release button 140 are symmetrically arranged on both sides of the eccentric wheel 130. Thus, when the stop spring 120 pushes the eccentric wheel 130 to move, the eccentric wheel 130 can simultaneously push the release button 140 to pop outwards. Similarly, when the release button 140 is pressed, the eccentric wheel 130 can be pushed back to its original position.

[0050] Preferably, double-sided sliding buttons 111 are provided on both sides of the capillary seat 110. By pressing down the double-sided sliding buttons 111, the capillary seat 110 is driven to move. At the same time, a sliding opening for the double-sided sliding buttons 111 to slide is provided on the side wall of the housing 100. The upper and lower ends of the sliding opening are the highest point position and the lowest point position of the double-sided sliding buttons 111 and the capillary seat 110;

[0051] The movement range of the capillary seat 110 is further limited by the setting of the bilateral slide button 111 and the sliding opening, which plays a role of double insurance. And the operator can intuitively tell whether the sprayer has accidentally drawn the liquid medicine and is in a state of waiting for spraying according to the position of the bilateral slide button 111;

[0052] In addition, with the setting of the bilateral slide button 111, when in use, the user can place the thumb on the bottom of the housing 100, press the bilateral slide button 111 with the index finger and middle finger at the same time, and finally press the release button 140 to complete a spraying action. The whole operation process can be completed with only one hand, which is more convenient for operation.

[0053] To further illustrate the two action processes of the sprayer for drawing the liquid medicine and spraying the liquid medicine, the spray assembly 200 in the housing 100 is hereby described as follows:

[0054] The spray assembly 200 has a liquid storage cavity 210. The capillary 112 of the capillary seat 110 is inserted into the liquid storage cavity 210, and a one-way valve 1121 is provided at one end of the capillary 112 inserted into the liquid storage cavity 210. When the capillary seat 110 moves to the lowest point position, a vacuum cavity is formed between the spray assembly 200 and the capillary 112. The one-way valve 1121 is opened by the vacuum and the liquid medicine flows into the liquid storage cavity 210;

[0055] After the release button 140 is pressed, the capillary seat 110 is reset upward under the action of the pressure spring 150, the one-way valve 1121 is closed, and the capillary 112 pushes the liquid medicine located in the liquid storage cavity 210 upward.

[0056] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above technical means, but also include the technical solutions composed of any combination of the above technical features. The above is the specific implementation manner of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

[0057] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0058] In addition, in the present utility model, descriptions such as "first", "second", "one", etc. are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0059] In the present utility model, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0060] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

Claims

1. An eccentric stop structure for a sprayer, characterized in that: include: case; The capillary seat realizes the extraction and injection of the liquid medicine by the sprayer through its axial movement; A stop spring and an eccentric wheel, wherein two ends of the stop spring are respectively in contact with the inner wall of the housing and the eccentric wheel, and the capillary tube seat is passed through the eccentric wheel; A release button connected to the eccentric wheel; When the capillary seat moves downward to be separated from the eccentric wheel, the stop spring pushes the eccentric wheel to the top of the capillary seat and axially limits the capillary seat. At this time, the sprayer completes the extraction of the liquid medicine, and the release button pops outward; When the release button is pressed, the capillary tube seat can be reset upward, and the sprayer completes the spraying action during the process of the capillary tube seat being reset upward.

2. The eccentric stop structure of a sprayer according to claim 1, characterized in that: The capillary seat has a highest point position and a lowest point position in the shell.

3. The eccentric stop structure of a sprayer according to claim 2, characterized in that: A pressure supply spring is also provided in the shell, and the pressure supply spring is arranged at the bottom of the capillary seat.

4. The eccentric stop structure of a sprayer according to claim 3, characterized in that: In the initial state, the capillary tube seat is always at the highest point under the support of the pressure supply spring, and at this time, the eccentric wheel is sleeved outside the capillary tube seat.

5. The eccentric stop structure of a sprayer according to claim 2, characterized in that: When and only when the capillary seat moves to the lowest point, the capillary seat is separated from the eccentric wheel, and the stop spring pushes the eccentric wheel to move and axially limits the capillary seat.

6. The eccentric stop structure of a sprayer according to claim 3, characterized in that: When the release button is pressed, the eccentric wheel is pushed to reset, and the capillary seat is reset upward to the highest point under the action of the pressure supply spring.

7. The eccentric stop structure of a sprayer according to claim 1, characterized in that: An end of the eccentric wheel close to the stop spring is provided with a mounting groove, and one end of the stop spring is embedded in the mounting groove.

8. The eccentric stop structure of a sprayer according to claim 1, characterized in that: The stop spring and the release button are symmetrically arranged on both sides of the eccentric wheel.

9. The eccentric stop structure of a sprayer according to claim 1, characterized in that: Two sides of the capillary seat are provided with double-side sliding buttons, and the capillary seat is driven to move by pressing the double-side sliding buttons downward.

10. The eccentric stop structure of a sprayer according to claim 9, characterized in that: The side wall of the housing is provided with a sliding opening for the sliding of the double-sided sliding buttons, and the upper and lower ends of the sliding opening are the highest point position and the lowest point position of the double-sided sliding buttons and the capillary seat.

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