Multiple steel shaft elastic clamp type valve conversion nozzle

Abstract

In the field of valve technology, we provide a multi-steel shaft elastic clamp type valve conversion nozzle. [Solution] The device includes a conversion nozzle body 10, a rigid shaft 40, an elastic sleeve 50, an air valve core 60, and a fastening member 70. A stepped through hole 20 is provided inside the conversion nozzle body, and the stepped through hole includes a first hole section, a second hole section, and a third hole section that are sequentially connected. Multiple uniformly arranged shaft body recessed arch grooves 30 are provided on the outer circumference of the conversion nozzle body, and the shaft body recessed arch grooves are connected to the third hole section. The rigid shaft is attached to the shaft body recessed arch groove, and the elastic sleeve is attached to the conversion nozzle body, covering the multiple rigid shafts. The air valve core is located in the second hole section and extends into the third hole section. The fastening member is attached to the first hole section. The integrated design of the rigid shaft and elastic sleeve, combined with the positioning of the stepped hole and recessed arch groove, achieves a highly reliable seal and rapid assembly.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and particularly to a multi-steel shaft elastic clamping type valve conversion nozzle.

Background Art

[0002] The conventional French type valve conversion nozzle structure generally adopts a separate body design. The assembly of its valve body and air valve core often realizes sealing and fixation by relying on a separately assembled rubber stopper. This structure has significant limitations. Specifically, as an elastic sealing component, the rubber stopper is prone to aging and wear over long-term use or in harsh environments, resulting in a decline in sealing performance and causing the problem of slow air leakage. In addition, the individual procurement and assembly of the rubber stopper increase the component cost and assembly cost. Next, the separate body assembly process is complex, requiring each component to be installed one by one. Not only is the production efficiency relatively low, but the requirement for assembly accuracy is also high. Otherwise, it is easy to cause eccentric mounting and shaking of the air valve core, affecting airtightness and the stability of the connection with the valve core. Furthermore, in an application scenario that conforms to a new type of French type valve core structure with, for example, changes in core size and the position of the sealing surface, it is often difficult for the conventional structure to provide a stable adjustable clamping force while ensuring reliable central positioning, leading to uneven airtightness and core sway, and further affecting the air filling and discharging efficiency and reliability.

Summary of the Invention

[0003] In view of such a situation, based on the defects of the prior art, the main purpose of this utility model is to provide a multi-steel shaft elastic clamping type valve conversion nozzle, which solves the problems of low sealing reliability, complexity and low efficiency of the assembly process, and insufficient adaptability to central positioning and stable clamping for the new type French type valve core structure caused by the separate body design and dependence on rubber stopper sealing of the conventional French type valve conversion nozzle structure.

[0004] To achieve the above objectives, this utility model is realized through the following technical solution.

[0005] The multi-steel shaft elastic clamp type valve conversion nozzle of this utility model is

[0006] A conversion nozzle body is provided with an axially extending stepped through-hole inside, and a plurality of uniformly arranged shaft body recessed arch grooves are further formed on the outer peripheral side wall, the stepped through-hole including a first hole section, a second hole section, and a third hole section that are sequentially communicating and coaxial, and the shaft body recessed arch groove communicates with the third hole section.

[0007] A rigid shaft attached to the recessed arch groove of the shaft body,

[0008] An elastic sleeve is attached to the conversion nozzle body, covers a plurality of the rigid shafts, and together with the rigid shafts, constitutes a radial elastic clamp and sealing action;

[0009] An air valve core is positioned in the second hole section, penetrating the first hole section, with one end extending into the first hole section and the other end extending into the third hole section.

[0010] The system includes a fastening member installed within the first hole section for applying an axial fastening force to the air valve core.

[0011] In a preferred configuration, the diameter of the second hole section is smaller than the diameter of the first hole section, the diameter of the second hole section is equal to the outer diameter of the air valve core, and the diameter of the third hole section is greater than or equal to the diameter of the first hole section.

[0012] In a preferred form, the rigid axis is either an elongated cylindrical structure or a spherical structure.

[0013] In a preferred configuration, the number of rigid axes is three or more.

[0014] In a preferred configuration, the axis of the rigid shaft is perpendicular to the axis of the conversion nozzle body.

[0015] In a preferred configuration, a lateral ventilation hole is provided on the outer circumference of the end of the air valve core that extends into the third hole section.

[0016] In a preferred configuration, the lateral ventilation holes are numerous and uniformly arranged along the circumferential direction of the air valve core.

[0017] In a preferred configuration, a limit ring block is provided protruding from the outer circumference of one end of the air valve core extending into the first hole section, one end of the fastening member abuts against the limit ring block, and the fastening member has an airflow passage hole that communicates with the air valve core.

[0018] In a preferred embodiment, the conversion nozzle body includes a conversion section and a connecting section fixedly connected to the conversion section, the outer circumference of the connecting section is further provided with connecting screws, the elastic sleeve is fitted over the conversion section, the conversion section includes a multi-sided step and a columnar step, both ends of the multi-sided step are connected to the columnar step and the connecting section, a first limit flange is provided protruding from the outer circumference of one end of the multi-sided step near the connecting section, a second limit flange is provided protruding from the outer circumference of one end of the columnar step away from the multi-sided step, the shaft recess arch groove is opened on the outer circumference of one end of the columnar step near the multi-sided step, both ends of the elastic sleeve are fitted corresponding to the multi-sided step and the columnar step, the first hole section is opened in the connecting section, the second hole section is opened in the multi-sided step, and the third hole section is opened in the columnar step.

[0019] In a preferred embodiment, the elastic sleeve is positioned between the first limit flange and the second limit flange, and the multi-sided step is at least six-sided.

[0020] This utility model offers clear advantages and beneficial effects compared to the prior art. Specifically, as can be understood from the above-described design, it employs an integrated clamp-seal structure consisting mainly of a rigid shaft and an elastic sleeve. Combined with a precise positioning design using stepped through holes inside and recessed arch grooves on the external shaft, it achieves accurate mounting of the air valve core and radially self-adaptive clamping and sealing of the valve core. The integrated design of the conversion nozzle body significantly reduces the number of parts and assembly process, solving the problems of slow air leakage caused by the aging deterioration of conventional separate designs and rubber stoppers, while directly reducing parts costs and management costs, and improving production efficiency. Furthermore, the uniform arrangement of multiple rigid shafts enhances central stability and grip uniformity when in contact with the new French-style valve core, reducing the risk of radial oscillation during valve core operation.

[0021] To more clearly explain the structural features and effects of this utility model, the utility model will be described in detail below with reference to drawings and specific embodiments. [Brief explanation of the drawing]

[0022] [Figure 1] This is a schematic diagram of a multiple steel shaft elastic clamp type valve conversion nozzle according to an embodiment of the present application. [Figure 2] This is a schematic diagram of the structure of the conversion nozzle body according to an embodiment of the present invention. [Figure 3] This is a cross-sectional view of the structure of the conversion nozzle body according to an embodiment of the present application. [Figure 4] This is a structural cross-sectional view of the assembled state of a multiple steel shaft elastic clamp type valve conversion nozzle and a valve core according to an embodiment of the present application. [Figure 5] This is a schematic diagram of the structure of a valve core according to an embodiment of the present invention. [Figure 6] This is a partial schematic diagram of a multiple steel shaft elastic clamp type valve conversion nozzle according to an embodiment of the present application. [Figure 7] This is a schematic exploded view of the structure of a multiple steel shaft elastic clamp type valve conversion nozzle according to an embodiment of the present invention. [Figure 8]It is a schematic structural decomposition diagram of a multi-steel-shaft elastic clamping type valve conversion nozzle from another perspective according to an embodiment of the present application. Explanation of symbols

[0023] 10. Conversion nozzle body; 11. Conversion part; 111. Multi-sided stage; 112. Columnar stage; 113. First limit flange; 114. Second limit flange;

[0024] 12. Connection part; 121. Connection screw;

[0025] 20. Through hole with steps; 21. First hole section; 22. Second hole section; 23. Third hole section;

[0026] 30. Shaft body concave arch groove;

[0027] 40. Rigid shaft;

[0028] 50. Elastic sleeve;

[0029] 60. Air valve core; 61. Side ventilation hole; 62. Limit ring block;

[0030] 70. Fastening member; 71. Air flow path hole;

[0031] 80. Valve core; 81. Circumferential annular groove.

Embodiment for implementing the invention

[0032] To make the purpose, technical solution and advantages of this utility model clearer, hereinafter, with reference to the drawings and embodiments, this utility model will be described in more detail. It should be understood that the specific embodiments described here are only for the purpose of explaining this utility model and do not limit this utility model.

[0033] When one component is said to be "attached" to another component, it may be directly attached to that other component, or another component may be present in between. When one component is considered to be "connected" to another component, it may be directly connected to the other component, or another component may be present in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0034] Referring to Figures 1 to 8, this embodiment provides a multi-steel shaft elastic clamp type valve conversion nozzle used for connecting to a French-type valve core 80, including a conversion nozzle body 10, a rigid shaft 40, an elastic sleeve 50, an air valve core 60, and a fastening member 70. The integrated design simplifies the structure and reduces the number of separate parts, thereby lowering component costs and assembly complexity. Specifically, the conversion nozzle body 10 is provided with stepped through-holes 20 that extend axially. The stepped through-holes 20 include sequentially communicating and coaxial first hole section 21, second hole section 22, and third hole section 23, forming a modular assembly space, ensuring the coaxiality of each mounting component, improving the uniformity of the seal, and preventing eccentricity during installation. The outer peripheral side wall of the conversion nozzle body 10 is further provided with a plurality of uniformly arranged shaft recess arch grooves 30, which provide accurate circumferential positioning relative to the rigid shaft 40 and ensure a uniform distribution of clamping force. The recessed arch groove 30 of the shaft body communicates with the third hole section 23, and the rigid shaft 40 is attached to the recessed arch groove 30 of the shaft body. The rigid shaft 40 can protrude inward and contact the valve core 80, thereby achieving radial clamping. The elastic sleeve 50 is fitted over the conversion nozzle body 10, covering the multiple rigid shafts 40 and consolidating the multiple rigid shafts 40 into an integrated clamping unit. The rigid shafts 40 are fixed by interference fit, and the elastic sleeve 50 provides sealing and self-adaptive clamping force. The elastic sleeve 50 and the rigid shafts 40 constitute radial elastic clamping and sealing action, replacing the conventional separate design and reliance on rubber stoppers, achieving stable sealing performance over the long term and reducing the risk of air leakage due to aging.

[0035] Furthermore, the valve core 80 has a circumferential annular groove 81 that is combined with the rigid shaft 40, ensuring a firm grip between the rigid shaft 40 and the valve core 80, and preventing radial oscillation when the valve core 80 is inserted and connected to the valve conversion nozzle. The air valve core 60 is positioned in the second hole section 22, passing through the first hole section 21, ensuring coaxiality between the air valve core 60 and the conversion nozzle body 10, and the second hole section 22 restricts radial displacement. One end of the air valve core 60 extends into the first hole section 21, facilitating contact with the fastening member 70 and achieving axial fastening. The other end extends into the third hole section 23, facilitating insertion and connection with the valve core 80 and ensuring reliable communication of the air passage. The fastening member 70 is installed in the first hole section 21 and applies an axial fastening force to the air valve core 60, ensuring that the air valve core 60 is securely fixed.

[0036] In this embodiment, referring to Figures 3 and 4, the diameter of the second hole section 22 is smaller than the diameter of the first hole section 21, and the diameter of the second hole section 22 is equal to the outer diameter of the air valve core 60. This ensures a tight fit, guarantees the central positioning of the air valve core 60, and reduces radial vibration. The diameter of the third hole section 23 is greater than or equal to the diameter of the first hole section 21, providing sufficient mounting space for the valve core 80 and ensuring that the radial clamping force is uniformly distributed.

[0037] The rigid axis 40 is either an elongated cylindrical structure or a spherical structure.

[0038] In this embodiment, the number of rigid shafts 40 is three or more; referring to Figure 6, the number of rigid shafts 40 is three.

[0039] In a preferred embodiment, the rigid shaft 40 has an elongated cylindrical structure, providing a longer contact surface and enhancing guide stability. The axis of the rigid shaft 40 is perpendicular to the axis of the conversion nozzle body 10, ensuring that the rigid shaft 40 reliably supports the valve core 80 radially and achieving uniform clamping.

[0040] The elastic sleeve 50 is a silicone rubber sleeve, and the rigid shaft 40 is a steel shaft.

[0041] Furthermore, referring to Figures 7 and 8, lateral vents 61 are provided on the outer circumference of the end of the air valve core 60 that extends into the third hole section 23. This design allows air to flow smoothly in or out through these lateral holes, even when the tip surface of the air valve core 60 is pressed against something, preventing blockage of the ventilation.

[0042] There are multiple lateral ventilation holes 61, and they are uniformly arranged along the circumferential direction of the air valve core 60.

[0043] In a preferred embodiment, two lateral ventilation holes 61 are provided and are arranged symmetrically on both sides of the air valve core 60 in the circumferential direction.

[0044] Referring to Figures 4, 7, and 8, a limit ring block 62 is provided protruding from the outer circumference of one end of the air valve core 60 that extends into the first hole section 21. One end of the fastening member 70 abuts against the limit ring block 62, fixing the air valve core 60 with an axial fastening force. The fastening member 70 has an airflow passage hole 71 that communicates with the air valve core 60, allowing for smooth airflow during air filling and discharge and preventing blockage.

[0045] Furthermore, referring to Figure 2, the conversion nozzle body 10 includes a conversion section 11 and a connection section 12 fixedly connected to the conversion section 11. The outer circumference of the connection section 12 is provided with a connection screw 121 for connection to air pump equipment and ensuring interface compatibility. The elastic sleeve 50 is fitted over and attached to the conversion section 11. The elastic sleeve 50 is fixed using the structure of the conversion section 11, preventing its axial movement. Specifically, the conversion section 11 includes a multi-sided step 111 and a columnar step 112. The multi-sided step 111 provides an anti-rotation function, and the columnar step 112 accommodates and covers the rigid shaft 40. Both ends of the multi-sided step 111 are connected to the columnar step 112 and the connection section 12, respectively, ensuring structural integrity and increasing overall strength. A first limit flange 113 is provided protruding from the outer circumference of one end of the multi-sided step 111 closest to the connection section 12, determining the axial position of the elastic sleeve 50 and preventing slippage in the direction of the connection section 12. A second limit flange 114 is provided protruding from the outer circumference of one end of the columnar step 112 that is away from the multi-sided step 111. This flange positions the other end of the elastic sleeve 50 axially, ensuring that the elastic sleeve 50 securely covers the rigid shaft 40 and preventing the elastic sleeve 50 from slipping off the conversion section 11. In other words, the elastic sleeve 50 is positioned between the first limit flange 113 and the second limit flange 114. The shaft recess arch groove 30 is opened on the outer circumference of one end of the columnar step 112 that is close to the multi-sided step 111, bringing the rigid shaft 40 closer to the sealing section of the air valve core 60 and optimizing the clamping effect. Both ends of the elastic sleeve 50 are fitted to correspond to the multi-sided step 111 and the columnar step 112, respectively, ensuring mounting stability and uniformity of the seal of the elastic sleeve 50. Referring to Figure 3, the first hole section 21 is opened in the connection section 12 and accommodates the fastening member 70 and the front end of the air valve core 60. The second hole section 22 is provided in the multi-sided step 111 to guide and position the air valve core 60 and restrict its radial movement. The third hole section 23 is provided in the columnar step 112 and forms an elastic clamp chamber.

[0046] Furthermore, referring to Figures 7 and 8, the multi-sided section 111 is at least a six-sided section.

[0047] The above description is merely an example of a suitable embodiment of this utility model and does not limit it. Any modifications, equivalent substitutions, and improvements made within the spirit of this utility model should also be included within the scope of protection of this utility model.

Claims

1. Multiple steel shaft elastic clamp type valve conversion nozzle, The conversion nozzle body (10) has an internal stepped through hole (20) extending axially, and a plurality of uniformly arranged shaft body recessed arch grooves (30) are further formed on the outer peripheral side wall, and the stepped through hole (20) includes sequentially communicating and coaxial first hole section (21), second hole section (22), and third hole section (23), and the shaft body recessed arch groove (30) communicates with the third hole section (23), A rigid shaft (40) is attached to the recessed arch groove (30) of the shaft body, An elastic sleeve (50) is attached to the conversion nozzle body (10) and covers a plurality of the rigid shafts (40), and together with the rigid shafts (40), constitutes a radial elastic clamp and sealing action. An air valve core (60) is positioned in the second hole section (22) passing through the first hole section (21), with one end extending into the first hole section (21) and the other end extending into the third hole section (23), A fastening member (70) is installed within the first hole section (21) and applies an axial fastening force to the air valve core (60), A multi-steel shaft elastic clamp type valve conversion nozzle characterized by having the following features.

2. The diameter of the hole in the second hole section (22) is smaller than the diameter of the hole in the first hole section (21), the diameter of the hole in the second hole section (22) is equal to the outer diameter of the air valve core (60), and the diameter of the hole in the third hole section (23) is greater than or equal to the diameter of the hole in the first hole section (21). The multiple steel shaft elastic clamp type valve conversion nozzle according to feature 1.

3. The rigid shaft (40) is either an elongated cylindrical structure or a spherical structure. The multiple steel shaft elastic clamp type valve conversion nozzle according to feature 1.

4. The number of the rigid shafts (40) is three or more. The multiple steel shaft elastic clamp type valve conversion nozzle according to feature 1.

5. The axis of the rigid shaft (40) is perpendicular to the axis of the conversion nozzle body (10). The multiple steel shaft elastic clamp type valve conversion nozzle according to feature 1.

6. A lateral ventilation hole (61) is provided on the outer circumference of the end of the air valve core (60) that extends into the third hole section (23). The multiple steel shaft elastic clamp type valve conversion nozzle according to feature 1.

7. The lateral ventilation holes (61) are numerous and uniformly arranged along the circumferential direction of the air valve core (60). The plurality of steel shaft elastic clamp type valve conversion nozzles according to feature 6.

8. A limit ring block (62) is provided protruding from the outer circumference of one end of the air valve core (60) that extends into the first hole section (21), one end of the fastening member (70) abuts against the limit ring block (62), and the fastening member (70) has an airflow passage hole (71) that communicates with the air valve core (60). The multiple steel shaft elastic clamp type valve conversion nozzle according to feature 1.

9. The conversion nozzle body (10) includes a conversion section (11) and a connecting section (12) fixedly connected to the conversion section (11), with a connecting screw (121) further provided on the outer circumference of the connecting section (12), and the elastic sleeve (50) is fitted over and attached to the conversion section (11), the conversion section (11) includes a multi-sided step (111) and a columnar step (112), both ends of the multi-sided step (111) are connected to the columnar step (112) and the connecting section (12), respectively, and a first limit flange (113) is provided protruding from the outer circumference of one end of the multi-sided step (111) closest to the connecting section (12). Furthermore, a second limit flange (114) is provided protruding from the outer circumference of one end of the columnar step (112) that is away from the multi-sided step (111), the shaft recess arch groove (30) is opened on the outer circumference of one end of the columnar step (112) that is closer to the multi-sided step (111), both ends of the elastic sleeve (50) are fitted to correspond to the multi-sided step (111) and the columnar step (112), the first hole section (21) is opened in the connecting section (12), the second hole section (22) is opened in the multi-sided step (111), and the third hole section (23) is opened in the columnar step (112). The multiple steel shaft elastic clamp type valve conversion nozzle according to feature 1.

10. The elastic sleeve (50) is positioned between the first limit flange (113) and the second limit flange (114), and the multi-sided step (111) is at least six-sided. The multiple steel shaft elastic clamp type valve conversion nozzle according to feature 9.

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