Dropper

Abstract

The utility model provides a dropper, which relates to the technical field of experimental instruments, and comprises a pressure head, the pressure head comprises a pressing part and a mounting part, the mounting part is connected with a pipe body, a concave part is arranged between the pressing part and the mounting part, the concave part is connected with the pressing part and the mounting part, and the minimum outer diameter of the concave part is smaller than the maximum outer diameter of the pressing part and the maximum outer diameter of the mounting part. According to the dropper provided by the utility model, the concave part is arranged between the pressing part and the mounting part, after the pressing head is pressed, the concave part deforms, the pressing part can be integrally pressed down, and the pressing part is not easy to sink, so that the pressing part is easy to reset after the pressing head is pressed, and the pressing head is convenient to use repeatedly.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental instruments, in particular to a dropper. Background Art

[0002] A dropper is a common laboratory instrument used in biological and medical testing. Existing droppers typically consist of a pressure head, a tube, and a liquid outlet tube. The pressure head is typically either a side-extrusion type or a push-type. Push-type pressure heads typically feature a flexible bladder. When dripping liquid, downward pressure is applied to the flexible rubber pressure head, causing it to slightly deform. This pressure forces the liquid in the tank to precisely discharge through the smaller outlet tube. Existing push-type pressure heads typically utilize a circular, raised bladder structure, with a gasket within the tube limiting its rebound. However, in practice, the bladder, after being squeezed and concave, does not easily rebound, hindering reuse and liquid dripping. Utility Model Content

[0003] The purpose of the utility model is to provide a dropper to solve the technical problem in the prior art that the pressure head of the dropper is not easy to rebound.

[0004] The utility model provides a dropper, comprising a pressure head and a tube body, the pressure head comprising a pressing portion and a mounting portion, the mounting portion being connected to the tube body, a recessed portion being provided between the pressing portion and the mounting portion, the recessed portion connecting the pressing portion and the mounting portion, and a minimum outer diameter of the recessed portion being smaller than a maximum outer diameter of the pressing portion and the mounting portion.

[0005] In an optional embodiment, the upper part of the recessed portion is connected to the pressing portion, and the lower part of the recessed portion is connected to the mounting portion. Along the direction from the upper part to the lower part of the recessed portion, the outer diameter of the upper part of the recessed portion gradually decreases, and the outer diameter of the lower part of the recessed portion gradually increases.

[0006] In an optional embodiment, the outer side surface of the recessed portion is curved.

[0007] In an optional embodiment, the maximum outer diameter of the upper portion of the recessed portion is smaller than the maximum outer diameter of the lower portion of the recessed portion.

[0008] In an optional embodiment, the recessed portion is cylindrical, and the outer diameter of the recessed portion is smaller than the maximum outer diameter of the pressing portion and the mounting portion.

[0009] In an optional embodiment, the upper portion of the recessed portion is connected to the lower bottom surface of the pressing portion, and the lower portion of the recessed portion is connected to the upper surface of the mounting portion.

[0010] In an optional embodiment, the maximum outer diameter of the pressing portion is smaller than the maximum outer diameter of the mounting portion.

[0011] In an alternative embodiment, the pressing portion has a flat upper surface.

[0012] In an alternative embodiment, the pressing portion has a convex upper surface.

[0013] In an optional embodiment, the material of the pressure head is rubber.

[0014] The dropper provided by the utility model has a recessed portion provided between the pressing portion and the mounting portion. When the pressure head is pressed, the recessed portion is deformed, and the pressing portion can be pressed downward as a whole. The pressing portion is not prone to being recessed, so that the pressing portion is easy to reset after the pressure head is pressed, which is convenient for repeated use of the pressure head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A schematic structural diagram of a dropper provided in Example 1 of the present utility model;

[0017] Figure 2 A schematic diagram of the explosion structure of the dropper provided in Example 1 of the present utility model;

[0018] Figure 3 A schematic side view of the structure of the pressure head provided in Example 1 of the present utility model;

[0019] Figure 4 A longitudinal cross-sectional schematic diagram provided for the first embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the side structure of the pressure head provided in Example 2 of the present utility model.

[0021] Icon: 100 - pressure head; 110 - pressing part; 120 - mounting part; 130 - recessed part; 131 - upper part; 132 - lower part; 200 - tube body. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0027] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0029] Example 1

[0030] The first embodiment of the present invention provides a dropper, such as Figures 1 to 4As shown, it includes a pressing head 100 and a tube body 200, the pressing head 100 includes a pressing portion 110 and a mounting portion 120, the mounting portion 120 is connected to the tube body 200, and a recessed portion 130 is provided between the pressing portion 110 and the mounting portion 120, the recessed portion 130 connects the pressing portion 110 and the mounting portion 120, and the minimum outer diameter of the recessed portion 130 is smaller than the maximum outer diameter of the pressing portion 110 and the mounting portion 120.

[0031] Figure 1 This is a schematic diagram of the structure of the dropper provided in Example 1 of the utility model. Figure 2 This is a schematic diagram of the explosion structure of the dropper provided in Example 1 of the utility model. Figure 3 This is a side structural diagram of the pressure head 100 provided in the first embodiment of the present invention. Figure 4 This is a longitudinal cross-sectional schematic diagram provided for Example 1 of the present utility model.

[0032] like Figure 1 、 Figure 2 and Figure 3 As shown, the pressure head 100 is connected to one end of the tube body 200, generally the upper end. In some embodiments, the pressure head 100 can also be connected to the side of the tube body 200. The pressure head 100 can be directly mounted on the tube body 200 and connected to the tube body 200 through the mounting portion 120. The mounting portion 120 can be fixedly connected to the tube body 200 by self-deformation or other processes.

[0033] like Figure 4 As shown, the pressure head 100 is a cavity structure. The pressure head 100 can be deformed after being pressurized. The cavity of the pressure head 100 is connected to the liquid storage cavity of the tube body 200. By pressing the pressure head 100, the liquid in the liquid storage cavity can be driven to drip out from the liquid outlet of the tube body 200.

[0034] The recessed portion 130 is arranged between the pressing portion 110 and the mounting portion 120, and serves to connect the pressing portion 110 and the mounting portion 120. Since the minimum outer diameter of the recessed portion 130 is smaller than the maximum outer diameters of the pressing portion 110 and the mounting portion 120, after the pressure head 100 is subjected to force, the recessed portion 130 is likely to deform inward and be concave. At the same time, the pressing portion 110 can be pressed down as a whole, and the pressing portion 110 is not likely to be concave and deformed. This makes it easy for the pressing portion 110 to reset after the pressure head 100 is pressed, which facilitates the repeated use of the pressure head 100, thereby solving the defect in the prior art that the vesicle-shaped pressure head 100 is not easy to rebound after being squeezed and concave, which affects reuse and dripping.

[0035] This embodiment achieves the technical effect of easy resetting of the pressure head 100 simply by changing the shape design of the pressure head 100. There is no need to set other complex structures in the pressure head 100 or the dropper, and there is no need to add other components or parts. It is easy to apply to existing droppers. Only the pressure head 100 of the existing dropper needs to be replaced to solve the problem of the pressure head 100 being difficult to reposition in the existing dropper. It has a good combination with the existing design and technology and is easy to apply.

[0036] In an optional embodiment, if Figure 3 and Figure 4 As shown, the upper part 131 of the recessed portion 130 is connected to the pressing portion 110, and the lower part 132 of the recessed portion 130 is connected to the mounting portion 120. Along the direction from the upper part 131 to the lower part 132 of the recessed portion 130, the outer diameter of the upper part 131 of the recessed portion 130 gradually decreases, and the outer diameter of the lower part 132 of the recessed portion 130 gradually increases.

[0037] In an optional embodiment, the outer side surface of the recessed portion 130 is a curved surface. Figure 3 and Figure 4 As shown, the connection between the upper portion 131 and the lower portion 132 can be connected in the form of an arc or a curve.

[0038] In an optional embodiment, the connection between the upper portion 131 and the lower portion 132 of the recessed portion 130 may be an angled structure formed by directly connecting the flat surfaces of the upper portion 131 and the lower portion 132 .

[0039] In an optional embodiment, if Figure 3 and Figure 4 As shown, the maximum outer diameter of the upper portion 131 of the recessed portion 130 is smaller than the maximum outer diameter of the lower portion 132 of the recessed portion 130. After the pressing portion 110 is pressed, the recessed portion 130 is more likely to rebound and return to its original position.

[0040] In an alternative embodiment, the maximum outer diameter of the upper portion 131 of the recessed portion 130 is the same as the maximum outer diameter of the lower portion 132 of the recessed portion 130 .

[0041] In an optional embodiment, the maximum outer diameter of the upper portion 131 of the recessed portion 130 is greater than the maximum outer diameter of the lower portion 132 of the recessed portion 130 .

[0042] Example 2

[0043] Embodiment 2 of the present invention provides a dropper, comprising a pressure head 100 and a tube body 200, including: the pressure head 100 includes a pressing portion 110 and a mounting portion 120, the mounting portion 120 is connected to the tube body 200, a recessed portion 130 is provided between the pressing portion 110 and the mounting portion 120, the recessed portion 130 connects the pressing portion 110 and the mounting portion 120, and the minimum outer diameter of the recessed portion 130 is smaller than the maximum outer diameter of the pressing portion 110 and the mounting portion 120.

[0044] like Figure 5 As shown, the recessed portion 130 is cylindrical, and the outer diameter of the recessed portion 130 is smaller than the maximum outer diameter of the pressing portion 110 and the mounting portion 120. The outer diameter of the recessed portion 130 can remain consistent, so that the recessed portion 130 is in the shape of a straight cylinder. The outer diameter of the recessed portion 130 can also decrease or increase from top to bottom. After the pressing portion 110 is compressed, the recessed portion 130 is small in size and is not easily deformed. The pressing portion 110 and the recessed portion 130 move downward as a whole at the same time, causing the mounting portion 120 to deform. After the pressing portion 110 is no longer compressed, the mounting portion 120 is easily reset due to its own elasticity, thereby driving the pressing portion 110 and the recessed portion 130 to reset.

[0045] In an optional embodiment, if Figure 5 As shown, the upper portion 131 of the recessed portion 130 is connected to the lower bottom surface of the pressing portion 110, and the lower portion 132 of the recessed portion 130 is connected to the upper surface of the mounting portion 120. When the pressing portion 110 is compressed, the pressing portion 110 and the recessed portion 130 move downward as a whole, causing the upper surface of the mounting portion 120 to deform. After the pressing portion 110 is no longer compressed, the upper surface of the mounting portion 120 easily returns to its original position due to its own elasticity, thereby driving the pressing portion 110 and the recessed portion 130 to return to their original position.

[0046] On the basis of the first and second embodiments, in an optional embodiment, the maximum outer diameter of the pressing portion 110 is smaller than the maximum outer diameter of the mounting portion 120, such as Figures 3 to 5 As shown in FIG. 1 , the minimum outer diameter of the recessed portion 130 is smaller than the maximum outer diameters of the pressing portion 110 and the mounting portion 120 , and the outer diameters of the recessed portion 130 and the pressing portion 110 are both smaller than the mounting portion 120 , making the pressed portion of the pressing head 100 smaller and easier to reset after being pressed.

[0047] In an optional embodiment, the maximum outer diameter of the pressing portion 110 is the same as the maximum outer diameter of the mounting portion 120 , so that the outer diameter of the pressing head remains consistent.

[0048] In an optional embodiment, the maximum outer diameter of the pressing portion 110 is greater than the maximum outer diameter of the mounting portion 120 , and the pressing portion is larger in size and more convenient to operate.

[0049] In an alternative embodiment, the pressing portion 110 has a flat upper surface. When the pressing portion 110 is pressed, the pressing portion 110 moves downward as a whole, and the deformation of the pressing portion 110 itself is small. The upper surface of the pressing portion 110 can be set as a flat upper edge. Without the upper surface of the pressing portion 110 being deformed, the effect of causing the dropper to discharge liquid after the pressure head 100 is pressed can be achieved.

[0050] In an optional embodiment, the pressing portion 110 has a convex upper surface. The convex upper surface may be arc-shaped, such as Figures 3 to 5 As shown; other shapes such as a semicircle are also possible. The raised upper surface can assist deformation, increasing the overall deformation of the indenter 100. When the overall deformation of the indenter 100 is mainly due to the downward pressure of the pressing portion 110 as a whole, the deformation of the raised upper surface is relatively small, making the raised upper surface easier to reset and less likely to cause the problem of being difficult to reset after being concave inward.

[0051] In an optional embodiment, the material of the pressing head 100 is rubber. Rubber is a common material of existing pressing heads 100 and has elasticity. It can meet the elasticity requirements of the pressing head 100 of the present invention and can achieve the effect of easy reset of the pressing head 100.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dropper, comprising a pressure head (100) and a tube body (200), characterized in that: The pressure head (100) comprises a pressing portion (110) and a mounting portion (120), wherein the mounting portion (120) is connected to the tube body (200), and a recessed portion (130) is provided between the pressing portion (110) and the mounting portion (120), wherein the recessed portion (130) connects the pressing portion (110) and the mounting portion (120), and wherein the minimum outer diameter of the recessed portion (130) is smaller than the maximum outer diameter of the pressing portion (110) and the mounting portion (120).

2. The dropper according to claim 1, characterized in that The upper portion (131) of the recessed portion (130) is connected to the pressing portion (110), and the lower portion (132) of the recessed portion (130) is connected to the mounting portion (120). Along the direction from the upper portion (131) to the lower portion (132) of the recessed portion (130), the outer diameter of the upper portion (131) of the recessed portion (130) gradually decreases, and the outer diameter of the lower portion (132) of the recessed portion (130) gradually increases.

3. The dropper according to claim 2, characterized in that The outer side surface of the recessed portion (130) is a curved surface.

4. The dropper according to claim 2, characterized in that The maximum outer diameter of the upper portion (131) of the recessed portion (130) is smaller than the maximum outer diameter of the lower portion (132) of the recessed portion (130).

5. The dropper according to claim 1, characterized in that The recessed portion (130) is cylindrical, and the outer diameter of the recessed portion (130) is smaller than the maximum outer diameters of the pressing portion (110) and the mounting portion (120).

6. The dropper according to claim 5, characterized in that The upper portion (131) of the recessed portion (130) is connected to the lower bottom surface of the pressing portion (110), and the lower portion (132) of the recessed portion (130) is connected to the upper surface of the mounting portion (120).

7. The dropper according to claim 1, characterized in that The maximum outer diameter of the pressing portion (110) is smaller than the maximum outer diameter of the mounting portion (120).

8. The dropper according to claim 1, characterized in that The pressing portion (110) has a flat upper surface.

9. The dropper according to claim 1, characterized in that The pressing portion (110) has a convex upper surface.

10. The dropper according to claim 1, characterized in that The material of the pressure head (100) is rubber.

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