Mistaken touch prevention flow knob adjusting mechanism and oxygen generator thereof

Abstract

The utility model discloses an anti-mistaken-touch flow knob adjusting mechanism and an oxygen generator thereof, an adjusting shaft is arranged in the product, the adjusting mechanism comprises an outer knob, an inner knob and an elastic piece, a limiting structure for limiting relative rotation is arranged between the outer knob and the inner knob, and in a natural state, the elastic piece is arranged between the outer knob and the inner knob. The outer knob moves towards the outer side under the elastic acting force of the elastic piece, so that the limiting structure is separated; in the adjustable state, the outer knob overcomes the elastic acting force of the elastic piece to move towards the inner side after bearing external axial pressing / pressing force, and the limiting structure abuts against and is matched with the outer knob, so that the inner knob and the adjusting shaft are driven by the outer knob to rotate around the axial direction to be matched. The utility model has the advantages of simple and novel structure, compact space, simple operation, simple production and assembly, axial pressing / pressing force which needs to be applied to the limiting structure in an abutting and matching way, no deflection and off-axis phenomenon, and effective prevention of misoperation.

Description

Technical Field

[0001] This utility model relates to the technical field of adjustment mechanisms, specifically to a flow rate knob adjustment mechanism to prevent accidental activation and its oxygen generator. Background Technology

[0002] When using an oxygen concentrator, the oxygen demand varies from person to person due to differences in physical condition and severity of illness. Currently, the oxygen flow rate of oxygen concentrators is generally adjusted directly by a flow rate control knob. Since the control knob is rotary and direct, it is easy to accidentally turn it, causing the oxygen flow rate to suddenly increase or decrease, which affects the user's experience and, in severe cases, can cause discomfort.

[0003] Existing technologies also include anti-accidental triggering adjustment knob mechanisms. For example, Chinese invention patent "Anti-accidental triggering adjustment knob mechanism and an audio player" (CN 106598131 A) discloses an anti-accidental triggering adjustment knob mechanism, which specifically includes two adjustable-pitch active and driven gear shafts. The adjustment knob is located outside the product housing, and the active gear shaft is mounted on the adjustment knob. The product housing has a through hole forming a slide, and the active gear shaft extends into the product housing from the through hole and can slide in the through hole. A potentiometer is installed inside the product housing, and the driven gear shaft is mounted on the potentiometer. When the active gear shaft slides to the proximal end in the through hole, it engages with the driven gear shaft to realize the parameter adjustment function. When it slides to the distal end, it disengages from the driven gear shaft, and the adjustment knob rotates freely, thereby avoiding the accidental triggering of the adjustment knob. The through hole is a narrow hole, and the adjustment at the distal and proximal ends, as well as the applied force that engages the active gear shaft and the driven gear shaft, is a radial force.

[0004] While the aforementioned patent overcomes the problem of preventing accidental touches, this anti-accidental trigger adjustment knob mechanism requires a radial thrust to be applied to the adjustment knob to overcome the spring force of the compression spring, thereby achieving meshing between the drive gear shaft and the driven gear shaft. Since the adjustment knob is a radially stressed factor, the meshing between the drive gear shaft and the driven gear shaft will exhibit axial misalignment, meaning it is not in a fully engaged state, thus affecting the user's experience of adjusting the knob. Moreover, this anti-accidental trigger adjustment knob mechanism mainly includes an adjustment knob mechanism, a gear mechanism, an elastic reset mechanism, etc., with numerous and complex components, resulting in high costs and making it unsuitable for widespread application in anti-accidental touch adjustment knob mechanisms for consumer products.

[0005] In view of this, how to solve the problems of poor user experience, many parts, and high cost of the existing anti-accidental trigger adjustment knob mechanism has become the research topic to be solved by this utility model. Utility Model Content

[0006] The purpose of this invention is to provide a flow rate knob adjustment mechanism that prevents accidental activation and its oxygen generator.

[0007] To achieve the above objectives, the first aspect of this utility model proposes an anti-accidental touch flow rate knob adjustment mechanism, which is designed for the outer shell of the product and has an adjustment shaft inside the product. The adjustment mechanism includes an outer knob, an inner knob, and an elastic element.

[0008] The outer knob is a knob structure used to withstand external axial pressing / pressure and external radial rotational force, and the outer knob has an inwardly facing elastic working surface.

[0009] The inner knob is a knob structure used to connect to the adjustment shaft and to make adjustments under the action of selection force.

[0010] A limiting structure is provided between the outer knob and the inner knob to restrict relative rotation.

[0011] One end of the elastic element acts on the elastic surface of the outer knob, and the other end acts on the outward elastic part of the inner knob or the outer shell.

[0012] The adjustment mechanism is configured to have a natural state and an adjustable state. In the natural state, the outer knob is displaced outward under the elastic force of the elastic element, so as to separate the limiting structure. In the adjustable state, the outer knob is displaced inward after being subjected to external axial pressing / pressure, overcoming the elastic force of the elastic element. The limiting structure comes into close contact with the outer knob, so that the inner knob and the adjustment shaft are driven by the outer knob to rotate around the axial direction.

[0013] To achieve the above objectives, a second aspect of this utility model provides an oxygen generator, which has a housing and an adjustment shaft, and uses the anti-accidental touch flow rate knob adjustment mechanism as described in the first aspect of this utility model.

[0014] The relevant contents of this utility model are explained as follows:

[0015] 1. In the above-mentioned technical solution of this utility model, in view of the problems of poor user experience, many parts, and high cost of existing anti-accidental trigger adjustment knob mechanisms, an innovative anti-accidental trigger flow rate knob adjustment mechanism with simple structure, easy axial pressing operation, low cost, and effective anti-accidental trigger is designed, as well as an oxygen concentrator using the anti-accidental trigger flow rate knob adjustment mechanism. The anti-accidental trigger flow rate knob adjustment mechanism is designed to have an outer knob, an inner knob, and an elastic element. A limiting structure is provided between the outer knob and the inner knob to restrict relative rotation. The adjustment mechanism is configured to have a natural state and an adjustable state. In the natural state, the outer knob is displaced outward under the elastic force of the elastic element, so that the limiting structure is separated. In the adjustable state, the outer knob is displaced inward after being subjected to external axial pressing / pressure, overcoming the elastic force of the elastic element. The limiting structure comes into close contact, so that the inner knob and the adjustment shaft are driven by the outer knob to rotate around the axial direction. Under normal circumstances, this anti-accidental-touch flow control knob mechanism prevents the outer knob from freely rotating and thus cannot adjust the flow rate. When an axial pressure is applied to the outer knob, it moves inward, and the limiting structure comes into close contact, allowing easy clockwise or counterclockwise rotation of the inner knob and oxygen adjustment shaft to increase or decrease the oxygen flow rate. This prevents sudden increases or decreases in oxygen flow rate due to accidental touch of the oxygen adjustment knob during use. Furthermore, this structure uses only three parts: the outer knob, the inner knob, and the elastic element. It is simple, novel, compact, easy to operate, and aesthetically pleasing. Compared to ordinary non-accidental-touch control knob mechanisms, it only adds two parts, simplifying production and assembly, increasing efficiency, and providing significant economic benefits. The pressing / pressure applied to the limiting structure for close contact is axial, preventing skewing or deviation and effectively preventing misoperation.

[0016] 2. In the technical solution of the first aspect above, one of the outer knob and the inner knob is provided with a boss, and the other is provided with a groove corresponding to the boss. The boss and the groove respectively have a radial limiting part and a radial limiting surface located parallel to the axial direction of the adjustment shaft. The boss and the groove constitute a limiting structure between the outer knob and the inner knob to restrict relative rotation between them. In the natural state, the outer knob is displaced outward under the elastic force of the elastic element, so that the groove and the boss are misaligned and separated. In the adjustable state, the outer knob is displaced inward after being subjected to external axial pressing / pressure, overcoming the elastic force of the elastic element. After the boss and the groove come close together, their radial limiting parts and radial limiting surfaces are at least partially overlapped in the axial direction of the adjustment shaft, so that the inner knob and the adjustment shaft are driven by the outer knob to rotate around the axial direction. The boss and groove between the outer knob and the inner knob constitute a limiting structure for restricting relative rotation between the two. The structure is ingenious and simple. The separation and close engagement of the limiting structure is more reliable, stable and quick. Moreover, it is easy to manufacture on the outer knob and the inner knob without any manufacturing process difficulties, and the relative cost will not increase much.

[0017] 3. In the above technical solution, one of the boss and the groove is set on the axially outward surface of the inner knob, and the other is set on the axially inward surface of the outer knob. That is, the boss and the groove are set opposite to each other. When the outer knob is pressed axially toward the inner knob, they can directly approach and engage. The operation is simple and convenient.

[0018] 4. In the above technical solution, the outer knob and the inner knob are respectively cylindrical and columnar, which makes it easier to generate the groove and boss between them, and makes the cooperation between them simpler and more stable in the adjustable state.

[0019] 5. In the above technical solution, one of the boss and the groove is disposed on the inner surface of the cylindrical structure and the other is disposed on the outer surface of the columnar structure. This is another way of arranging the boss and the groove, which increases the stability between the outer knob and the inner knob when the limiting structure is in close contact.

[0020] 6. In the above technical solution, the plurality of protrusions and grooves are equally distributed around the periphery of the outer knob and the inner knob, thereby further increasing the stability between the outer knob and the inner knob when the limiting structure is in close contact.

[0021] 7. In the above technical solution, the inner knob has an outwardly facing circular hole, the elastic action part is located on the outward surface of the circular hole, and the elastic element is assembled into the circular hole.

[0022] 8. In the above technical solution, the adjustment mechanism further includes an anti-dislodgement structure for limiting the outward displacement stroke of the outer knob, thereby preventing the outer knob from falling off.

[0023] 9. In the above technical solution, the anti-detachment structure consists of an anti-detachment part and an anti-detachment groove. One of the anti-detachment part and the anti-detachment groove is located on the outer knob, and the other is located on the inner knob. In the natural state, the anti-detachment part and the anti-detachment groove abut against each other to restrict the outward displacement of the outer knob. This structure is simple, stable, and reliable.

[0024] 9. In the above technical solution, the anti-detachment part is a pin, the anti-detachment part is inserted into the circular hole on the circumferential surface of the outer knob, the anti-detachment groove is provided on the outer wall of the circumferential surface of the inner knob, the anti-detachment groove has an anti-detachment surface facing inward, and in the natural state the anti-detachment part abuts against the anti-detachment surface of the anti-detachment groove.

[0025] 10. In this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] 11. In this utility model, the terms “center”, “upper”, “lower”, “axial”, “bottom”, “inner”, “outer”, etc., indicate the orientation or positional relationship based on the orientation or positional assembly relationship shown in the drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] 12. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] Due to the application of the above solution, this utility model has the following advantages and effects compared with the prior art:

[0029] 1. The above-mentioned solution of this utility model does not affect the appearance of the product, and has the same shape as the ordinary non-accidental touch prevention adjustment knob mechanism. It has a simple and novel structure, compact space, simple operation and consistent appearance.

[0030] 2. Compared with the ordinary adjustment knob mechanism that does not prevent accidental touch, the above-mentioned solution of this utility model only increases the number of parts by 2, making production and assembly simple, efficient, and economically beneficial.

[0031] 3. In the above-mentioned solution of this utility model, when using it, you first need to press the outer knob axially, and then rotate the outer knob to adjust the flow rate. When you release the outer knob, the outer knob is in an idle state. It can be seen that this utility model has the characteristics of simple operation, convenient use, and effective prevention of misoperation.

[0032] 4. The above-mentioned solution of this utility model, which adopts the above-mentioned anti-accidental touch adjustment knob mechanism, ensures that the oxygen flow rate will not suddenly increase or decrease due to accidental touch of the oxygen flow rate adjustment knob during the use of the oxygen concentrator, and can stably provide the user with the fixed oxygen flow rate required.

[0033] 5. The above-mentioned solution of this utility model can not only be used in oxygen generator products for oxygen flow regulation, but can also be extended to other fields of products that require regulation, such as liquid flow regulation, gas flow regulation, volume regulation, light intensity regulation, current and voltage regulation, and other technical fields. Attached Figure Description

[0034] Figure 1 This is an exploded view of the anti-accidental touch flow rate knob adjustment mechanism according to an embodiment of the present invention;

[0035] Figure 2 This is a cross-sectional schematic diagram of the anti-accidental touch flow rate knob adjustment mechanism in the natural state according to an embodiment of this utility model;

[0036] Figure 3 This is a cross-sectional schematic diagram of the anti-accidental touch flow rate knob adjustment mechanism in the adjustable state according to an embodiment of the present utility model;

[0037] Figure 4 This is a three-dimensional schematic diagram of the inner knob in an embodiment of the present utility model (view 1);

[0038] Figure 5 This is a three-dimensional schematic diagram (view 2) of the inner knob in an embodiment of this utility model.

[0039] Figure 6 This is a three-dimensional schematic diagram of the external knob in an embodiment of the present utility model (viewpoint 1);

[0040] Figure 7 This is a three-dimensional schematic diagram (view 2) of the external knob in the embodiment of this utility model;

[0041] Figure 8 This is a planar schematic diagram of the external knob in an embodiment of the present utility model (viewpoint 1);

[0042] Figure 9 for Figure 8 Schematic diagram of the cross section along the AA direction;

[0043] Figure 10 This is a three-dimensional schematic diagram of an inner knob with another boss design in an embodiment of this utility model;

[0044] Figure 11 This is a three-dimensional schematic diagram of an external knob with another boss design in an embodiment of this utility model.

[0045] The parts shown in the above attached diagram are illustrated below:

[0046] 1. External knob

[0047] 11. Boss

[0048] 2. Internal knob

[0049] 21 Grooves

[0050] 22 round holes

[0051] 23 Anti-detachment groove

[0052] 231 Anti-hair loss face

[0053] 3. Elastic components

[0054] 4. Anti-hair loss section

[0055] 41 Pins

[0056] 5. Adjusting shaft. Detailed Implementation

[0057] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0058] This utility model aims to address the problems of poor user experience, numerous components, and high cost of existing anti-accidental trigger adjustment knob mechanisms. It innovatively designs an anti-accidental trigger flow rate knob adjustment mechanism and an oxygen concentrator using this mechanism. The anti-accidental trigger flow rate knob adjustment mechanism has a simple structure, is easy to operate by axial pressing, has low cost, and can effectively prevent accidental triggering.

[0059] Example 1, as Figures 1 to 11 As shown in the figure, Embodiment 1 of this utility model discloses an anti-accidental touch flow rate knob adjustment mechanism, which is designed for the outer shell of the product (not shown in the figure). The product has an adjustment shaft 5 inside, and the adjustment mechanism includes an outer knob 1, an inner knob 2, and an elastic element 3.

[0060] The outer knob 1 is a knob structure used to withstand external axial pressing / pressure and external radial rotational force, and the outer knob 1 has an inwardly facing elastic working surface.

[0061] The inner knob 2 is a knob structure used to connect with the adjustment shaft 5 and to make adjustments under the action of selection force.

[0062] A limiting structure is provided between the outer knob 1 and the inner knob 2 to restrict relative rotation.

[0063] One end of the elastic element 3 acts on the elastic surface of the outer knob 1, and the other end acts on the outward elastic part of the inner knob 2 or the outer shell.

[0064] The adjustment mechanism is configured to have a natural state and an adjustable state. In the natural state, the outer knob 1 is displaced outward under the elastic force of the elastic element 3, so that the limiting structure is separated. In the adjustable state, the outer knob 1 is displaced inward after being subjected to external axial pressing / pressure, overcoming the elastic force of the elastic element 3. The limiting structure comes into close contact with the outer knob 1, so that the inner knob 2 and the adjustment shaft 5 are driven by the outer knob 1 to rotate around the axial direction.

[0065] Through the implementation of Embodiment 1 of this utility model, the anti-accidental touch flow rate knob adjustment mechanism is designed to have an outer knob 1, an inner knob 2, and an elastic element 3. A limiting structure is provided between the outer knob 1 and the inner knob 2 to restrict relative rotation. The adjustment mechanism is configured to have a natural state and an adjustable state. In the natural state, the outer knob 1 is displaced outward under the elastic force of the elastic element 3 to separate the limiting structure. In the adjustable state, the outer knob 1 is displaced inward after being subjected to external axial pressing / pressure, overcoming the elastic force of the elastic element 3. The limiting structure comes into close contact with the inner knob 2 and the adjustment shaft 5, which are driven by the outer knob 1 to rotate around the axial direction. Under normal circumstances, the outer knob 1 cannot adjust the flow rate when it is idle. When a pressing force is applied to the outer knob 1 in the axial direction, the outer knob 1 moves inward and the limiting structure comes into close contact, allowing the inner knob 2 and the oxygen adjustment shaft 5 to be easily rotated clockwise or counterclockwise to adjust the oxygen flow rate, thus avoiding the phenomenon of sudden increase or decrease in oxygen flow rate due to accidental contact with the oxygen adjustment knob during use.

[0066] In the above embodiment of this utility model, between the outer knob 1 and the inner knob 2, one is provided with a boss 11, and the other is provided with a groove 21 corresponding to the boss 11. The boss 11 and the groove 21 respectively have a radial limiting part and a radial limiting surface located parallel to the axial direction of the adjusting shaft 5. The boss 11 and the groove 21 constitute a limiting structure between the outer knob 1 and the inner knob 2 to restrict relative rotation between them. In the natural state, the outer knob 1 is displaced outward under the elastic force of the elastic member 3, so that the groove 21 and the boss 11 are misaligned and separated. In the adjustable state, after the outer knob 1 is subjected to external axial pressing / pressure, it overcomes the elastic force of the elastic member 3 and displaces inward. After the boss 11 and the groove 21 come close together, their radial limiting parts and radial limiting surfaces are at least partially overlapped in the axial direction of the adjusting shaft 5, so that the inner knob 2 and the adjusting shaft 5 are driven by the outer knob 1 to rotate around the axial direction. The boss 11 and groove 21 between the outer knob 1 and the inner knob 2 constitute a limiting structure for restricting the relative rotation between the two. The structure is ingenious and simple. The separation and close-fitting of the limiting structure is more reliable, stable and quick. Moreover, it is easy to process and manufacture on the outer knob 1 and the inner knob 2 without any manufacturing process difficulties. The relative cost will not increase much.

[0067] In the above embodiment of this utility model, one of the boss 11 and the groove 21 is disposed on the axially outward surface of the inner knob 2, and the other is disposed on the axially inward surface of the outer knob 1. That is, the boss 11 and the groove 21 are disposed opposite to each other. When the outer knob 1 is pressed axially toward the inner knob 2, they can directly approach and engage, making the operation simple and convenient.

[0068] For details, please refer to Figure 4 , Figure 5 as well as Figure 6 , Figure 7 As shown, a groove 21 is provided on the inner knob 2, and a boss 11 is provided on the outer knob 1; however, this utility model is not limited to this, and a boss 11 can also be provided on the inner knob 2, and a groove 21 can be provided on the outer knob 1.

[0069] In the above embodiment of this utility model, the outer knob 1 and the inner knob 2 are respectively cylindrical and columnar, which makes it easier to generate the groove 21 and the boss 11 between them, and makes the cooperation between the two simpler and more stable in the adjustable state.

[0070] For details, please refer to Figure 4 , Figure 5 as well as Figure 6 , Figure 7As shown, the outer knob 1 is cylindrical and the inner knob 2 is cylindrical; however, this utility model is not limited to this, and a boss 11 can also be provided on the inner knob 2 and a groove 21 can be provided on the outer knob 1.

[0071] In the above embodiment of this utility model, one of the boss 11 and the groove 21 is disposed on the inner surface of the cylindrical structure and the other is disposed on the outer surface of the columnar structure. This is another way of arranging the boss 11 and the groove 21, thereby increasing the stability between the outer knob 1 and the inner knob 2 when the limiting structure is in close contact.

[0072] For details, please refer to Figure 10 as well as Figure 11 As shown, a groove 21 is provided on the outer surface of the inner knob 2, and a boss 11 is provided on the inner surface of the outer knob 1; however, this utility model is not limited to this, and a boss 11 can also be provided on the outer surface of the inner knob 2, and a groove 21 can be provided on the inner surface of the outer knob 1.

[0073] In the above embodiment of this utility model, a plurality of protrusions 11 and grooves 21 are equally distributed around the periphery of the outer knob 1 and the inner knob 2, thereby further increasing the stability between the outer knob 1 and the inner knob 2 when the limiting structure is in close contact.

[0074] For details, please refer to Figure 4 and Figure 6 As shown, ten equal bosses 11 are designed on the inner plane of the outer knob 1, and correspondingly, ten equal grooves 21 are formed on the outer plane of the inner knob 2. This utility model is not limited to this, and other numbers of bosses 11 and grooves 21 can be designed according to the size of the knob.

[0075] In the above embodiment of this utility model, the inner knob 2 has an outwardly facing circular hole 22, the elastic action part is located on the outward surface of the circular hole 22, and the elastic element 3 is assembled into the circular hole 22.

[0076] More specifically, such as Figure 1 As shown, the circular hole 22 can be located at the center hole of the inner knob 2. This invention is not limited to this; the circular hole 22 can also be located on the stepped surface around the inner knob 2.

[0077] In the above embodiment of the present invention, the adjustment mechanism further includes an anti-dislodgement structure for limiting the outward displacement stroke of the outer knob 1, thereby preventing the outer knob 1 from falling off.

[0078] Specifically, the anti-detachment structure consists of an anti-detachment part 4 and an anti-detachment groove 23. One of the anti-detachment part 4 and the anti-detachment groove 23 is located on the outer knob 1, and the other is located on the inner knob 2. In the natural state, the anti-detachment part 4 and the anti-detachment groove 23 abut against each other to restrict the outward displacement of the outer knob 1. This structure is simple, stable, and reliable.

[0079] Furthermore, the anti-detachment part 4 is a pin 41, which is inserted into the circular hole on the circumferential surface of the outer knob 1. The anti-detachment groove 23 is provided on the outer wall of the circumferential surface of the inner knob 2, and the anti-detachment groove 23 has an inward-facing anti-detachment surface 231. In its natural state, the anti-detachment part 4 abuts against the anti-detachment surface 231 of the anti-detachment groove 23. Alternatively, the anti-detachment part 4 can be configured as a protrusion integrally formed at the inward-facing end of the outer knob 1.

[0080] Example 2: This utility model discloses an electronic product that relates to the technical fields of liquid flow regulation, gas flow regulation, volume regulation, light intensity regulation, current and voltage regulation, etc.

[0081] Example 3: This utility model discloses an oxygen generator, which has a housing and an adjustment shaft 5. The oxygen generator uses the anti-accidental touch flow knob adjustment mechanism as described in the first aspect of this utility model.

[0082] like Figure 1 As shown, Figure 1 As shown, one end of the oxygen regulating shaft 5 is in the shape of a "D". First, it is inserted into the "D" groove of the inner knob 2. The shape can also be other polygonal shapes. Then, the elastic element 3 (compression spring) is placed in the circular hole 22 of the inner knob 2. Then, the outer knob 1 is directly put on the inner knob 2. Finally, the pin 41 is inserted into the circular hole on the surface of the outer knob 1.

[0083] like Figure 2 As shown, the flow control knob adjustment mechanism is in its natural state, i.e., the normal elastic force of the compression spring separates the outer knob 1 and the inner knob 2. The inner knob 2 has an anti-disengagement groove 23 on its surface. At this time, the pin 41 is located to the right of the pin 41 groove on the surface of the inner knob 2, ensuring that the outer knob 1 will not be popped out. When the outer knob 1 is touched, it is in an idle state and cannot adjust the oxygen flow.

[0084] like Figure 3As shown, a pressing force is applied to the axial direction of the outer knob 1. Pressing the outer knob 1 in the direction of the arrow causes the boss 11 inside the outer knob 1 to be embedded in the groove 21 on the end face of the inner knob 2. At this time, rotating the outer knob 1 clockwise or counterclockwise will drive the inner knob 2 and the oxygen regulating shaft 5 to rotate, thereby adjusting the oxygen flow rate to increase or decrease. When the outer knob 1 is released, it returns to its natural state.

[0085] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A mistaken touch prevention flow knob adjusting mechanism, arranged for a product shell, the product having an adjusting shaft (5) therein, characterized in that: the adjusting mechanism comprises an outer knob (1), an inner knob (2), and an elastic member (3); the outer knob (1) is a knob structure for bearing external axial pressing force and external radial rotating force, and has an inwardly arranged elastic action surface; the inner knob (2) is a knob structure for connecting with the adjusting shaft (5) and adjusting under the action of selected force; a limiting structure for limiting relative rotation is arranged between the outer knob (1) and the inner knob (2); one end of the elastic member (3) acts on the elastic action surface of the outer knob (1), and the other end acts on an outwardly arranged elastic action part of the inner knob (2) or the shell; the adjusting mechanism is configured to have a natural state and an adjustable state, in the natural state, the outer knob (1) is displaced outwardly under the elastic action force of the elastic member (3) to separate the limiting structure, and in the adjustable state, the outer knob (1) is displaced inwardly against the elastic action force of the elastic member (3) after bearing external axial pressing force, the limiting structure is closely fitted, so that the inner knob (2) and the adjusting shaft (5) are rotated around the axis in cooperation with the outer knob (1); a boss (11) is arranged on one of the outer knob (1) and the inner knob (2), and a groove (21) corresponding to the boss (11) is arranged on the other; the boss (11) and the groove (21) respectively have a radial limiting part and a radial limiting surface which are parallel to the adjusting shaft (5) in the axial direction, and the boss (11) and the groove (21) constitute the limiting structure for limiting relative rotation between the outer knob (1) and the inner knob (2); in the natural state, the outer knob (1) is displaced outwardly under the elastic action force of the elastic member (3) to separate the groove (21) from the boss (11); in the adjustable state, the outer knob (1) is displaced inwardly against the elastic action force of the elastic member (3) after bearing external axial pressing force, the radial limiting part and the radial limiting surface of the boss (11) and the groove (21) at least partially overlap in the axial direction of the adjusting shaft (5) after closely fitting, so that the inner knob (2) and the adjusting shaft (5) are rotated around the axis in cooperation with the outer knob (1); the boss (11) and the groove (21) are arranged on the outward surface of the inner knob (2) and the inward surface of the outer knob (1) respectively; one of the outer knob (1) and the inner knob (2) is a cylindrical structure, and the other is a columnar structure; the boss (11) is arranged on the inner side surface of the cylindrical structure, and the groove (21) is arranged on the outer side surface of the columnar structure; a plurality of the bosses (11) and the grooves (21) are arranged equidistantly around the circumferential side of the outer knob (1) and the inner knob (2). ​ ​ ​ ​ ​ ​ 2. The accidental-touch-misdirection flow knob adjustment mechanism of claim 1, wherein: ​ 3. The accidental-touch-misdirection flow knob adjustment mechanism of claim 2, wherein: ​ 4. The accidental-touch-misdirection flow knob adjustment mechanism of claim 2, wherein: ​ 5. The accidental touch resistant flow knob adjustment mechanism of claim 4, wherein: ​ 6. The accidental touch resistant flow knob adjustment mechanism of any one of claims 2 to 5, wherein: ​ 7. The accidental-touch-misdirection flow knob adjustment mechanism of claim 1, wherein: The inner knob (2) is provided with a circular hole (22) outwardly arranged, the elastic action part is located on the outward surface of the circular hole (22), and the elastic member (3) is assembled into the circular hole (22).

8. The accidental-touch-misdirection flow knob adjustment mechanism of claim 1, wherein: The adjusting mechanism further comprises an anti-disengagement structure for limiting the outward displacement stroke of the outer knob (1).

9. The accidental touch resistant flow knob adjustment mechanism of claim 8, wherein: The anti-disengagement structure is composed of an anti-disengagement part (4) and an anti-disengagement groove (23), one of the anti-disengagement part (4) and the anti-disengagement groove (23) is arranged on the outer knob (1), and the other is arranged on the inner knob (2); in the natural state, the anti-disengagement part (4) and the anti-disengagement groove (23) abut to limit the outward displacement of the outer knob (1).

10. The accidental-touch-misdirection flow knob adjustment mechanism of claim 9, wherein: The anti-disengagement part (4) is a pin (41), the anti-disengagement part (4) is inserted into the circumferential surface hole of the outer knob (1), the anti-disengagement groove (23) is arranged on the circumferential surface outer wall of the inner knob (2), the anti-disengagement groove (23) has an anti-disengagement surface (231) inwardly arranged, and in the natural state, the anti-disengagement part (4) abuts against the anti-disengagement surface (231) of the anti-disengagement groove (23).

11. An oxygen generator having a housing, a regulating shaft (5), characterized in that: The oxygen generator uses the anti-misoperation flow knob adjusting mechanism according to any one of claims 1 to 10.

Images