Piston control assembly, piston structure and anti-suffocation device
By designing the limiting parts and control structures in the piston control assembly, the problem of the piston head being unable to move alone is solved, the individual movement and linkage of the piston head are realized, which provides better negative pressure suction effect and improves the efficiency and safety of the anti-suffocation device.
Patent Information
- Application Number
- CN202422035277.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-21
AI Technical Summary
In the existing anti-suffocation device, the piston head and the piston rod are integrated into one structure and cannot move alone, resulting in the inability to quickly form negative pressure conditions and the inability to provide effective negative pressure suction effect.
A piston control assembly is designed, including a piston rod, a limiting member and a control structure. The movement of the push rod is controlled through the control part, so as to deflect the limiting member to release the limiting member to thereby realize the individual movement and linkage of the piston head, forming a negative pressure condition.
The piston head is realized individually, providing better negative pressure suction effect, and improving the operating efficiency and safety of the anti-suffocation device.
Smart Images
Figure CN223112067U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of portable medical supplies, in particular to a piston control assembly, a piston structure and an anti-asphyxia device. Background Art
[0002] Tracheal foreign body obstruction is one of the common acute and critical diseases, which can cause dyspnea, pneumonia and atelectasis in patients. If not treated in time, severe cases may lead to asphyxia and death. When a foreign body blocks the airway, in addition to using the Heimlich maneuver for first aid, currently, a negative pressure type anti-asphyxia device can also be used for treatment. The blocked foreign body is extracted by negative pressure, which is convenient for operation and can also prevent secondary injuries caused by improper operation of the Heimlich maneuver.
[0003] The existing anti-asphyxia devices usually adopt a piston type structure, and air exchange is achieved by pushing and pulling the piston to obtain the required negative pressure effect. However, at present, most of the piston rods and piston heads of the piston structure are integral structures, and the two move synchronously. The piston head does not have the condition of moving independently, and the piston rod cannot provide the basic structure for the required independent movement and linkage cooperation of the piston head. Therefore, it is impossible to quickly form a negative pressure condition by the independent movement of the piston head, and a better negative pressure suction effect cannot be provided, which needs to be improved. Summary of the Utility Model
[0004] To solve the technical problem that the existing piston head cannot move independently, the utility model provides a piston control assembly, a piston structure and an anti-asphyxia device.
[0005] To achieve the purpose of the utility model, the following technical solutions are adopted in the utility model:
[0006] A piston control assembly includes
[0007] A piston rod with an accommodation cavity inside;
[0008] A limiting member, hinged to the middle and lower part of the piston rod, and at least partially protruding outward from the outer wall of the piston rod to limit the piston head at the bottom of the piston rod; and
[0009] A control structure, including a push rod slidably installed in the accommodation cavity, and a control member slidably engaged with the push rod to be able to push the push rod downward during its controlled movement. When the push rod moves downward, it can push the limiting member to rotate until its outer wall is flush with or concave into the outer wall of the piston rod to release the limitation on the piston head.
[0010] Furthermore, a cover body is provided at the top end of the piston rod, and the control member is at least partially movably installed in the cover body, the cover body includes a bottom cover and a slidable top cover, the top cover is provided with a first hook, the control member is provided with a second hook that can be engaged with the first hook, and a first elastic member is provided between the bottom cover and the top cover, and the first hook and the second hook are disengaged after the control member moves.
[0011] Furthermore, a second elastic member is sleeved on one end of the control member located in the cover body, and one end of the second elastic member abuts against the cover body.
[0012] Furthermore, the control member includes a transverse section that is slidably engaged with the push rod.
[0013] Furthermore, a matching and limiting anti-dropping structure is provided between the control member and the cover body.
[0014] Furthermore, the bottom of the push rod has a gradually increasing and inclined push section and an extension section below the push section, and the extension section is located between the two limiting members or between the limiting member and the inner wall of the piston rod.
[0015] Furthermore, the push rod is provided with a first sealing member abutting against the wall of the accommodating chamber.
[0016] Furthermore, a plurality of reinforcing ribs are arranged at intervals on the push rod.
[0017] Furthermore, a third elastic member is provided between the limiting member and the piston rod or between two limiting members.
[0018] Furthermore, the limiting member includes a hinge portion, an abutting portion located at an upper end of the hinge portion, and a limiting portion located at a lower end of the hinge portion, the abutting portion is bent inwardly, and the limiting portion is bent outwardly.
[0019] Furthermore, a first limiting platform for supporting the piston head is provided at the bottom end of the piston rod.
[0020] Furthermore, the piston rod is provided with a second limiting platform above the limiting member for supporting a fourth elastic member, and the other end of the fourth elastic member abuts against the push rod.
[0021] Compared with the prior art, the beneficial effect of the piston control assembly of the utility model is: the movement of the push rod is controlled by the control member, and the movement of the push rod causes the limit member to deflect to release the limit on the piston head, thereby providing the piston head with a structure of independent movement and linkage cooperation, which can realize the separate movement or synchronous movement of the piston rod and the piston head, so that negative pressure conditions can be formed by the independent movement of the piston head, providing a better negative pressure suction effect.
[0022] In addition, the present utility model also provides a piston structure, and the specific solution is as follows: A piston structure,
[0023] comprises a piston head, which is in a ring-shaped structure. A second seal is provided on the outer wall of the piston head, and a third seal is provided on the inner wall of the piston head; the aforementioned piston control assembly; wherein, the piston head is sleeved outside the piston rod, and a sliding seal fit is formed between the piston head and the piston rod through the third seal.
[0024] The piston structure provided by the present utility model includes the aforementioned piston control assembly, and thus has the same functions as the piston control assembly.
[0025] In addition, the present utility model also provides an anti-asphyxiation device, and the specific solution is as follows: An anti-asphyxiation device includes a housing; the aforementioned piston structure, with a part disposed inside the housing; and a fifth elastic member, with two ends respectively abutting against the housing and the piston head.
[0026] Further, the housing is provided with a visual window.
[0027] Further, the housing is provided with a hanging member.
[0028] The anti-asphyxiation device provided by the present utility model includes the aforementioned piston structure, and thus has the same functions as the piston structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0030] Figure 1 is a perspective view of the anti-asphyxiation device of the present utility model;
[0031] Figure 2 is a cross-sectional view of the anti-asphyxiation device of the present utility model;
[0032] Figure 3 is Figure 2 an enlarged schematic view of part A in
[0033] Figure 4 is Figure 2 an enlarged schematic view of part B in
[0034] Figure 5 is a perspective view of the piston structure of the present utility model;
[0035] Figure 6 is a cross-sectional view of the piston structure of the present utility model;
[0036] Figure 7 It is a sectional view of a state of the anti-asphyxiation device of the present utility model;
[0037] Figure 8 It is another sectional view of a state of the anti-asphyxiation device of the present utility model;
[0038] Reference numerals: 1, piston rod; 11, accommodation cavity; 12, cover body; 121, bottom cover; 122, top cover; 123, first hook; 124, first limiting platform; 125, second limiting platform; 126, fourth elastic member; 2, limiting member; 21, third elastic member; 22, hinged portion; 23, abutting portion; 24, limiting portion; 3, push rod; 31, abutting section; 32, extending section; 33, first seal; 34, reinforcing rib; 4, control member; 41, second hook; 42, second elastic member; 43, transverse movement section; 44, anti-disengagement structure; 5, first elastic member; 6, piston head; 61, second seal; 62, third seal; 7, outer shell; 71, visual window; 8, fifth elastic member; 9, suspension member. Detailed implementation manners
[0039] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.
[0040] In this article, terms such as "upper, lower, inner, outer" are established based on the positional relationships shown in the drawings. Depending on the different drawings, the corresponding positional relationships may also change accordingly. Therefore, they cannot be understood as absolute limitations on the protection scope; moreover, relational terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply any such actual relationship or order between these components.
[0041] Embodiment 1
[0042] See Figure 1-6The present embodiment provides a piston control assembly, including a piston rod 1, a stopper 2 and a control structure. A receiving chamber 11 is provided inside the piston rod 1; the stopper 2 is hinged to the middle and lower part of the piston rod 1, and at least partially protrudes outward from the outer wall of the piston rod 1 to limit the piston head 6 at the bottom of the piston rod 1; the control structure includes a push rod 3 slidably mounted in the receiving chamber 11, and a control member 4 that is slidably engaged with the push rod 3 so as to push the push rod 3 downward during the movement of the control operation, and when the push rod 3 moves downward, it can push the stopper 2 to rotate until its outer wall is flush or recessed in the outer wall of the piston rod 1 to release the limit on the piston head 6.
[0043] Specifically, when the piston control assembly is used, the user presses the control member 4 to move the control member 4 from the outside to the inside of the cover body. During the movement of the control member 4, the push rod 3 in the piston rod 1 is pushed downward. When the push rod 3 moves downward, it can push the limit member 2 to rotate, so that the limit member 2 deflects until its outer wall is flush with or concave in the outer wall of the piston rod 1, thereby releasing the limit on the piston head 6. The piston head 6 can move upward along the piston rod 1 under force to form a negative pressure condition. As can be seen from the above, the piston control assembly provides the piston head 6 with a structure that can move independently and in linkage, and can realize the separate movement or synchronous movement of the piston rod 1 and the piston head 6, so that the negative pressure condition can be formed by the upward movement of the piston head 6 alone, providing a better negative pressure suction effect.
[0044] For more details, see Figure 2 The piston rod 1 is provided with a plurality of windows at intervals in the middle and lower part thereof, and a plurality of stoppers 2 are respectively hinged at the corresponding windows. Preferably, the control member 4 includes a transverse section 43 that is slidably matched with the push rod 3. The push rod 3 vertically penetrates the accommodating cavity 11 of the piston rod 1. The transverse section 43 abuts against the push rod 3. The control member 4 is laterally located at the top of the piston rod 1. When the control member 4 moves laterally, it pushes the push rod 3 downward. However, the control member 4 is not limited thereto. It may also have a component that vertically pushes against the push rod 3, as long as it can realize the control of the movement of the push rod 3.
[0045] For further information, see Figure 3, a cover body 12 is provided at the top end of the piston rod 1. At least part of the control member 4 is movably installed in the cover body 12. The cover body 12 includes a bottom cover 121 and a slidable top cover 122. The top cover 122 is provided with a first hook 123. The control member 4 is provided with a second hook 41 that can be engaged with the first hook 123. And a first elastic member 5 is provided between the bottom cover 121 and the top cover 122. After the control member 4 moves, the first hook 123 and the second hook 41 are disengaged. Specifically, when the control member 4 is in the initial position, the first hook 123 and the second hook 41 are in the engaged state. After the control member 4 is controlled by the user to move, the first hook 123 and the second hook 41 are disengaged. And when disengaged, the top cover 122 moves upward under the restoring force of the first elastic member 5. Thus, the user can judge whether the piston control assembly has performed negative suction by whether the top cover 122 moves upward, which is convenient for the user to confirm. After the piston control assembly is used up, the control member 4 returns to the initial position, and the user compresses the first elastic member 5 by pressing down the top cover 122, and makes the first hook 123 and the second hook 41 return to the engaged state again for the next use. Preferably, the bottom cover 121 is provided with a plurality of air vents at intervals to facilitate exhaust when the piston head 6 moves upward to form a negative pressure condition. Preferably, the first elastic member 5 is a spring, and the bottom cover 121 and the top cover 122 are provided with limiting grooves for installing the spring.
[0046] Further, referring to Figure 3 , a second elastic member 42 is sleeved at one end of the control member 4 located in the cover body 12, and one end of the second elastic member 42 abuts against the cover body 12, so that after the piston control assembly is used up, the control member 4 automatically returns to the initial position under the restoring force of the second elastic member 42. Preferably, the second elastic member 42 is a spring. Of course, it can also be a structure such as an elastic sleeve, as long as it can stably improve the elastic restoring force.
[0047] Further, referring to Figure 3 , an anti-disengagement structure 44 is provided between the control member 4 and the cover body 12 for matching and limiting, to prevent the control member 4 from disengaging from its initial position when the control member 4 is under the restoring force of the second elastic member 42, resulting in inability to be used again.
[0048] Further, referring to Figure 4 , the bottom of the push rod 3 has a pushing section 31 that gradually increases upward and is inclined and an extending section 32 located below the pushing section 31. The extending section 32 is located between the two limiting members 2 or between the limiting member 2 and the inner wall of the piston rod 1, so as to ensure that when the push rod 3 moves downward, the pushing section 31 can abut against the limiting member 2, causing the limiting member 2 to deflect and release the limit on the piston head 6.
[0049] Further, referring toFigure 3 A first seal member 33 that abuts against the wall of the accommodation cavity 11 is provided on the push rod 3 to prevent air leakage from the accommodation cavity 11 during the use of the piston control assembly, which may affect the negative pressure effect. Preferably, more than one first seal member 33 is provided at least at two of the top, middle, and bottom of the push rod 3.
[0050] Furthermore, referring to Figure 6 a plurality of reinforcing ribs 34 are spaced apart on the push rod 3 to strengthen the strength of the push rod 3 and prevent it from breaking during use. Preferably, vertical reinforcing ribs 34 and horizontal reinforcing ribs 34 are spaced apart on the push rod 3, and a groove is formed between the vertical reinforcing ribs 34 and the horizontal reinforcing ribs 34. More preferably, the reinforcing ribs 34 are arranged in a staggered manner on the push rod 3. The staggered reinforcing ribs 34 can better strengthen the strength of the push rod 3 compared to symmetrically arranged reinforcing ribs 34, and the arrangement of the reinforcing ribs on the push rod 3 can better reduce the friction of the cylindrical push rod, making it more labor-saving to control the push rod 3 and enabling the control member 4 to control the push rod 3 more flexibly.
[0051] Furthermore, referring to Figure 4 a third elastic member 21 is provided between the limiting member 2 and the piston rod 1 or between two limiting members 2, such that the limiting member 2 is in the limiting position under the elastic force of the third elastic member 21 and is not easily rotated under the influence of its own weight. When the push rod 3 applies a thrust force greater than the elastic force, the limiting member 2 deflects, and after the thrust force is removed, the limiting member 2 resets. Preferably, the third elastic member 21 is provided between two limiting members 2, and the third elastic member 21 is a spring, with both ends of the spring sleeved on the protrusions of the two limiting members 2 respectively.
[0052] Furthermore, referring to Figure 4 the limiting member 2 includes a hinged portion 22, a abutting portion 23 located at the upper end of the hinged portion 22, and a limiting portion 24 located at the lower end of the hinged portion 22. The abutting portion 23 is bent inward to further cooperate with the push rod 3. The limiting portion 24 is bent outward to further limit the piston head 6.
[0053] Furthermore, referring to Figure 2 and 6 a first limiting platform 124 for carrying the piston head 6 is provided at the bottom end of the piston rod 1, that is, when the piston head 6 is limited, it is located between the limiting member 2 and the first limiting platform 124. Preferably, the limiting platform is a limiting plate structure installed at the bottom of the piston rod 1 to facilitate the installation of the piston head 6.
[0054] Furthermore, referring to Figure 4 a second limiting platform 125 for carrying the fourth elastic member 126 is provided on the piston rod 1 above the limiting member 2, and the other end of the fourth elastic member 126 abuts against the push rod 3 to facilitate the reset of the push rod 3.
[0055] Embodiment 2
[0056] In this embodiment, the same parts as those in the first embodiment are given the same figure marks, and the same text descriptions are omitted.
[0057] See also Figure 5-6 This embodiment provides a piston structure, including a piston head 6 and a piston control assembly. The piston head 6 is a ring-shaped structure, the outer wall of the piston head 6 is provided with a second sealing member 61, and the inner wall of the piston head 6 is provided with a third sealing member 62; wherein the piston head 6 is sleeved on the outer side of the piston rod 1, and a sliding seal is formed between the piston head 6 and the piston rod 1 through the third sealing member 62.
[0058] The thickness of the piston head 6 is adapted to the distance between the limit member 2 and the first limit platform 124; the piston head 6 can be movably sleeved on the outside of the piston rod 1, so that it has the basic conditions for moving along the piston rod 1; the inner wall of the piston head 6 is provided with a third sealing ring to achieve the required sliding sealing cooperation, without affecting the overall air tightness and the required movement effect; the piston head 6 forms a stable clamp between the limit member 2 and the first limit platform 124, so that it can move synchronously to the initial position after use.
[0059] Embodiment 3
[0060] In this embodiment, the same parts as those in Embodiments 1 and 2 are given the same figure marks, and the same text descriptions are omitted.
[0061] See also Figure 1-8 , this embodiment provides an anti-suffocation device, including a shell 7, a piston structure and a fifth elastic member 8. The piston structure is partially arranged in the shell 7; the two ends of the fifth elastic member 8 are respectively abutted against the shell 7 and the piston head 6, so that after the piston head 6 is released from the limit, it moves upward under the force of the fifth elastic member 8 to form a negative pressure condition. Through the cooperation of the piston control component and the piston head 6, it is convenient to adjust the energy storage for subsequent triggering and starting; the negative pressure condition can be quickly formed by the movement of the piston head 6 alone, providing a better negative pressure suction effect. The bottom of the shell 7 is equipped with an air inlet valve and an air outlet valve; the fifth elastic member 8 is preferably a spring, and can also be an elastic rubber sleeve or a barrel-shaped leaf spring. More preferably, one end of the fifth elastic member 8 is abutted against the shell 7, and the other end is reduced and sleeved on the bottom end of the piston head 6, so that the elastic member is not easy to deviate, and the elastic force applied to the piston head 6 is more stable.
[0062] More specifically, before the anti-suffocation device is used, the piston head 6 is in an active state, and the piston control assembly maintains a state of extending into the interior of the housing 7, such as Figure 2 The position shown in the figure prevents the fifth elastic member 8 from being squeezed for a long time and causing it to fail; when it is needed to be used, the following steps are included:
[0063] S1. Connect the mask to make it communicate with the air extraction part of the anti-asphyxia device;
[0064] S2. Pull the piston control assembly upward to a preset position, such as Figure 7 the position shown, so that the piston head 6 is stuck in the middle and lower part of the piston control assembly and is limited by the limiting member 2;
[0065] S3. Press the piston control assembly downward to a preset position, such as Figure 8 the position shown, and the piston control assembly is stuck on the end cover, maintaining the state of squeezing the fifth elastic member 8;
[0066] S4. Wear the mask properly on the human mouth and nose;
[0067] S5. Press the control member 4 so that the limiting member 2 releases the limiting state of the piston head 6. The piston head 6 moves upward under the elastic force of the fifth elastic member 8, and the air pressure at the bottom position of the anti-asphyxia device decreases. The gas in the mask enters the anti-asphyxia device from the intake valve; thus, the air pressure at the bottom of the mask decreases, forming a suction force to suck out the foreign body in the throat; at this time, it resets to the position as shown in Figure 2 shown.
[0068] Further, referring to Figure 1 , the housing 7 is provided with a visual window 71 for the convenience of the user to observe.
[0069] Further, referring to Figure 1 , the housing 7 is provided with a hanging member 9 for the convenience of placing when not in use.
[0070] Without violating the gist of the present invention and in a situation where there is no contradiction in technical means, at least some of the technical implementation manners in the above embodiments can be combined or replaced.
[0071] The above is only the preferred implementation manner of the present invention. The protection scope of the present invention is subject to the scope defined by the claims. Several improvements and refinements made by those skilled in the art without departing from the spirit and scope of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A piston control assembly, characterized in that, Comprising a piston rod, which is internally provided with a receiving cavity; a limiting member, which is hinged to the middle and lower part of the piston rod and at least partially protrudes outward from the outer wall of the piston rod to limit the piston head at the bottom of the piston rod; and a control structure, including a push rod slidably installed in the receiving cavity and a control member slidably engaged with the push rod to be able to push the push rod downward during its controlled movement. When the push rod moves downward, it can push the limiting member to rotate until its outer wall is flush with or concave into the outer wall of the piston rod to release the limitation on the piston head.
2. The piston control assembly according to claim 1, wherein A cover body is provided at the top end of the piston rod. At least part of the control member is movably installed in the cover body. The cover body includes a bottom cover and a slidable top cover. The top cover is provided with a first hook, and the control member is provided with a second hook that can be engaged with the first hook. And a first elastic member is provided between the bottom cover and the top cover. After the control member moves, the first hook and the second hook are disengaged.
3. The piston control assembly according to claim 2, characterized in that, One end of the control member located in the cover body is sleeved with a second elastic member, and one end of the second elastic member abuts against the cover body.
4. The piston control assembly according to claim 3, wherein, The control member includes a lateral movement section slidably engaged with the push rod; and / or, an anti-detachment structure for mutually limiting and cooperating is provided between the control member and the cover body.
5. The piston control assembly according to claim 3, wherein, The bottom of the push rod has a pushing section that gradually increases upward in an inclined shape and an extending section located below the pushing section. The extending section is located between the two limiting members or between the limiting member and the inner wall of the piston rod; and / or, a first sealing member for abutting against the wall of the receiving cavity is provided on the push rod; and / or, a plurality of reinforcing ribs are provided on the push rod at intervals.
6. The piston control assembly according to claim 5, characterized in that A third elastic member is provided between the limiting member and the piston rod or between the two limiting members; and / or, the limiting member includes a hinged portion, a abutting portion located at the upper end of the hinged portion, and a limiting portion located at the lower end of the hinged portion. The abutting portion is bent inward, and the limiting portion is bent outward.
7. The piston control assembly according to claim 6, characterized in that, A first limiting platform for carrying the piston head is provided at the bottom end of the piston rod; and / or, a second limiting platform for carrying a fourth elastic member is provided on the piston rod above the limiting member, and the other end of the fourth elastic member abuts against the push rod.
8. A piston structure, characterized in that, Comprising a piston head, which is in an annular structure. A second sealing member is provided on the outer wall of the piston head, and a third sealing member is provided on the inner wall of the piston head; the piston control assembly according to any one of claims 1 to 7; wherein, the piston head is sleeved on the outside of the piston rod, and a sliding sealing fit is formed between the piston head and the piston rod through the third sealing member.
9. An anti-asphyxiation device, characterized in that, Comprising a housing; the piston structure according to claim 8, partially arranged in the housing; and a fifth elastic member, with two ends respectively abutting against the housing and the piston head.
10. The anti-asphyxia device according to claim 9, characterized in that, The housing is provided with a visual window; and / or, the housing is provided with a hanging member.