A control handle assembly for a flush valve
By designing a flush valve control handle assembly compatible with both linear push and swing, the problem of poor versatility in existing technologies has been solved, achieving flexible triggering methods and high reliability, while reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG KEXIN IND
- Filing Date
- 2026-04-29
- Publication Date
- 2026-05-26
AI Technical Summary
The existing flush valve control handle assembly can only be triggered by a single method, resulting in poor versatility, increased production costs, and difficulty for users to replace it.
Design a control handle assembly compatible with both linear push and swing triggering methods. Through the cooperation of the drive rod and the transmission rod, two independent and complete triggering functions are realized. A stable fulcrum is provided by the cooperation of the spherical protrusion and the arc-shaped inner hole, and the annular retaining ring provides guidance and support.
It improves the versatility and adaptability of products, reduces manufacturers' inventory and mold costs, and enhances operational reliability and user experience.
Smart Images
Figure CN224281476U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flushing valve technology, and in particular to a control handle assembly for a flushing valve. Background Technology
[0002] Currently, there are two main types of mechanical triggering for flush valve control handles (used in bathroom fixtures such as squat toilets and urinals). One type, as shown in patent CN223975631U, uses a linear push mechanism. The user presses the handle body, causing it to move linearly and push the handle's transmission components, thus opening the flush valve. This type is not easily controlled by a swing mechanism. The other type, as shown in patent CN223343382U, uses a swing mechanism for manual flushing. The user steps on a foot pedal or presses a swing lever, causing it to swing around a fulcrum. The swinging end then pushes a lever or other transmission components to flush.
[0003] However, these two structures are independent and have limited functionality. A flush valve product, when shipped, may only have a control handle assembly that can be driven linearly or triggered by oscillation. This results in poor versatility when facing different user habits, installation environments (such as space constraints or wall structures), or usage scenarios (such as manual pressing versus foot pedal operation). Manufacturers need to create molds, prepare materials, and produce different handle assemblies for different triggering methods, increasing mold costs, inventory management complexity, and supply chain pressure. If users later wish to change the operation method (e.g., from manual pressing to foot pedal operation), they typically need to replace the entire flush valve or handle assembly, which is extremely inconvenient. Therefore, there is an urgent need for a control handle assembly that is compatible with both linear pushing and oscillating triggering methods, has a compact structure, and is highly reliable, to improve the product's versatility and adaptability. Utility Model Content
[0004] This utility model proposes a control handle assembly for a flush valve that is compatible with both linear push and swing triggering methods, thus solving the aforementioned problems existing in the use of the prior art.
[0005] The technical solution of this utility model is implemented as follows: A control handle assembly for a flush valve includes a handle connecting housing, a transmission rod mounting seat, a transmission rod, and a drive rod. The transmission rod mounting seat is threadedly connected to the handle connecting housing, forming a contact cavity between the transmission rod mounting seat and the handle connecting housing. The transmission rod is slidably fitted on the transmission rod mounting seat, with one end extending into the contact cavity and the other end extending out of the transmission rod mounting seat. A rotating connecting sleeve is fixedly connected to the handle connecting housing. The drive rod is rotatably connected to the rotating connecting sleeve. One end of the drive rod extends into the contact cavity and is integrally formed with a drive plate. One end of the transmission rod located in the contact cavity is integrally formed with a stop plate. The transmission rod mounting seat is provided with a return spring for driving the stop plate to abut against the drive plate. An axially penetrating inner hole is provided in the drive rod, and a push rod is movably fitted into the inner hole. One end of the push rod is used to abut against the stop plate, and the other end extends out of the inner hole.
[0006] The outer side of the drive rod has an integrally formed spherical protrusion at a position relative to the rotating connecting sleeve. The inner side of the rotating connecting sleeve has an arc-shaped inner hole for fitting the spherical protrusion and for allowing it to move inside. The spherical protrusion has rotating shafts on both sides that are rotatably fitted on the sidewalls of the arc-shaped inner hole.
[0007] The handle connecting housing has a connecting sleeve mounting threaded hole on the end away from the transmission rod mounting seat, and the rotating connecting sleeve is threadedly fixed in the connecting sleeve mounting threaded hole.
[0008] A push plate is integrally formed on the end of the push rod facing the abutment, and a push plate groove for accommodating the push plate is opened on the end of the drive rod with its inner hole facing the abutment.
[0009] The drive rod has several annular retaining rings integrally formed on the inner wall of the inner hole, and the push rod slides within the annular retaining rings.
[0010] A pressure plate is detachably threaded to the end of the drive rod away from the drive plate, and a push button is detachably threaded to the end of the push rod away from the push plate.
[0011] A sealing sleeve is fixedly connected to the drive rod mounting base. The sealing sleeve is fitted onto the outside of the drive rod and is interference-fitted with it.
[0012] In summary, the beneficial effects of this utility model are as follows:
[0013] 1. By simultaneously incorporating a swingable drive rod and a push rod that slides axially along its inner bore within the handle assembly, and utilizing the cooperation between the drive plate of the drive rod and the stop plate of the transmission rod, two independent and complete flushing triggering methods—"swing drive" and "linear drive"—are achieved. Users or installers can choose to push the stop plate by swinging the drive rod (e.g., by foot or hand pressure on the outer end of the drive rod), or directly push the stop plate by linearly pushing the push rod (e.g., by pressing the push rod with a finger). Both methods cause the transmission rod to slide, thereby opening the flush valve. This "two-in-one" structural design allows the same handle assembly to adapt to different usage habits and installation environments, greatly improving the product's versatility, flexibility, and market adaptability, while reducing the manufacturer's inventory and mold costs.
[0014] 2. The spherical protrusion and the arc-shaped inner hole, along with the pivots on both sides of the spherical protrusion, provide a stable and precise fulcrum for the drive rod. This structure not only allows the drive rod to swing smoothly up and down to trigger flushing, but also effectively restricts the axial movement and rotation of the drive rod around its own axis. This constraint ensures that the drive plate accurately and stably pushes the stop plate during each swing operation, avoiding transmission failure or jamming caused by drive rod wobbling or displacement, significantly improving operational reliability and feel.
[0015] 3. Multiple annular retaining rings are installed in the inner hole of the drive rod to provide precise guidance and support for the axial sliding of the push rod. These retaining rings reduce the contact area between the push rod and the inner wall of the drive rod, thereby reducing sliding friction, making the push rod move more smoothly and effortlessly, and improving the ease of operation. At the same time, the multi-point support structure also ensures that the push rod will not deviate significantly during long-stroke movements, ensuring that it always maintains direct contact with the backing plate, improving the linearity and accuracy of the transmission.
[0016] 4. Detachable pressure plates and push buttons are installed at the ends of the drive rod and push rod, respectively, greatly enhancing the functional expandability and user experience of the components. The pressure plate provides a large force-bearing surface, allowing users to easily swing the drive rod by stepping on it or pressing it with their palm, achieving "foot-operated" or "hand-operated" flushing. The push button provides an ergonomic pressing surface, allowing users to easily push the push rod with their fingers, achieving "hand-operated" flushing. The detachable threaded connection design allows these accessories to be flexibly installed or removed according to the actual installation scenario and user needs. For example, the pressure plate can be omitted in confined spaces, further improving the product's adaptability. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 for Figure 1 A schematic diagram of the structure after removing the pressure plate;
[0020] Figure 3 for Figure 1 Top view;
[0021] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;
[0022] Figure 5 This is a schematic diagram of the drive rod part in this utility model;
[0023] Figure 6 This is a schematic diagram of the structure of the present invention installed on the main valve body of the flush valve.
[0024] In the diagram: 1. Handle connecting housing; 11. Connecting sleeve mounting threaded hole; 2. Transmission rod mounting seat; 3. Contact cavity; 4. Rotating connecting sleeve; 41. Arc-shaped inner hole; 5. Transmission rod; 51. Abutment plate; 52. Return spring; 6. Drive rod; 61. Drive plate; 62. Inner hole; 63. Spherical protrusion; 64. Rotating shaft; 65. Push plate groove; 66. Annular retaining ring; 67. Pressure plate; 7. Push rod; 71. Push plate; 72. Push button; 8. Sealing sleeve; 9. Screw; 100. Main valve body. Detailed Implementation
[0025] The following will refer to the appendix in the embodiments of this utility model. Figure 1-6 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] Example:
[0027] like Figures 1 to 6As shown, this utility model discloses a control handle assembly for a flush valve, aiming to solve the problems of limited triggering methods and poor versatility in existing flush valve handles. This control handle assembly is compatible with both swing-type and linear push-type triggering methods, allowing users or installers to flexibly choose according to their actual usage environment or habits, greatly improving the product's adaptability and market competitiveness.
[0028] Specifically, the control handle assembly includes a handle connecting housing 1, a transmission rod mounting base 2, a transmission rod 5, and a drive rod 6. The handle connecting housing 1 serves as the base of the entire assembly, as shown below. Figure 6 As shown, one end is threaded to the main valve body 100 of the flush valve, and the transmission rod mounting seat 2 is threaded to the handle connecting housing 1, being pressed between the handle connecting housing 1 and the main valve body of the flush valve, forming a contact cavity 3 between the transmission rod mounting seat 2 and the handle connecting housing 1. The transmission rod 5 is slidably mounted inside the transmission rod mounting seat 2, with one end extending into the contact cavity 3 and the other end protruding from the transmission rod mounting seat 2, for direct contact with the valve core or actuating component inside the flush valve to trigger the flushing action.
[0029] A rotating connecting sleeve 4 is fixedly connected to the end of the handle connecting housing 1 away from the transmission rod mounting seat 2. The drive rod 6 is rotatably connected to the rotating connecting sleeve 4. One end of the drive rod 6 extends into the contact cavity 3, and a drive plate 61 is integrally formed at this end. Correspondingly, a stop plate 51 is integrally formed at the end of the transmission rod 5 located in the contact cavity 3. A return spring 52 is also provided on the transmission rod mounting seat 2. The return spring 52 always applies an elastic force to the transmission rod 5, so that the stop plate 51 at the end of the transmission rod 5 remains in close contact with the drive plate 61 on the drive rod 6 in its natural state. When an external force is applied to the drive rod 6 to make it swing, the drive plate 61 pushes the stop plate 51, thereby causing the transmission rod 5 to slide axially, realizing the flushing trigger; when the external force disappears, the return spring 52 pushes the transmission rod 5 to reset, and the stop plate 51 simultaneously pushes the drive plate 61 to swing back to the initial position.
[0030] Next, to achieve the linear push triggering function, an inner hole 62 is formed through the drive rod 6 along its axial direction. A push rod 7 is movably fitted in this inner hole 62. One end of the push rod 7 also faces the abutment 51 in the contact cavity 3 and can directly abut against the abutment 51. The other end of the push rod 7 extends out of the inner hole 62 of the drive rod 6 for the user to press. With the above structure, when the user directly pushes the push rod 7, the end of the push rod 7 will directly push the abutment 51 of the transmission rod 5, which will also drive the transmission rod 5 to slide axially, realizing the flushing trigger. In this way, the handle assembly has two independent and complete triggering functions: swing drive and linear drive. In addition, it should be noted that if it is necessary to ensure that the drive rod 6 does not wobble during the movement of the push rod 7 when the push rod 7 is pushed away from the transmission rod 5, a screw 9 can be threaded through the rotating connecting sleeve 4 and fixed to the spherical protrusion 63 of the drive rod 6 to ensure that the drive rod 6 does not swing. When the drive rod 6 needs to swing, the screw 9 needs to be removed.
[0031] Furthermore, to ensure the stability and accuracy of the drive rod 6 during the swinging process, this invention optimizes the cooperation between the drive rod 6 and the rotating connecting sleeve 4. Specifically, a spherical protrusion 63 is integrally formed on the outer side of the drive rod 6 corresponding to the position of the rotating connecting sleeve 4, while an arc-shaped inner hole 41 matching the spherical protrusion 63 is machined on the inner side of the rotating connecting sleeve 4, with the spherical protrusion 63 movably fitted within the arc-shaped inner hole 41. In addition, a rotating shaft 64 is respectively provided on both sides of the spherical protrusion 63, and these two rotating shafts 64 are rotatably fitted on the sidewall of the arc-shaped inner hole 41. With this structure, the drive rod 6 can swing smoothly up and down with the two rotating shafts 64 as fulcrums, while the cooperation between the spherical protrusion 63 and the arc-shaped inner hole 41 effectively restricts the axial movement and rotation around its own axis of the drive rod 6, ensuring that the push of the drive plate 61 on the abutment plate 51 is both accurate and reliable during each swinging operation.
[0032] To facilitate assembly and subsequent maintenance, a threaded hole 11 for mounting the rotating connecting sleeve 4 is provided on the handle connecting housing 1. The rotating connecting sleeve 4 is fixed by being directly screwed into the threaded hole via external threads. This detachable connection method allows the rotating connecting sleeve 4 and its internal components such as the drive rod 6 and push rod 7 to be disassembled and assembled as a whole module, greatly facilitating production assembly and after-sales maintenance.
[0033] To address the movement of the push rod 7 within the inner hole 62 of the drive rod 6, this invention also incorporates limiting and guiding structures. A push plate 71 is integrally formed at the end of the push rod 7 facing the abutment 51. Correspondingly, a push plate groove 65 is formed at the end of the inner hole 62 of the drive rod 6 facing the abutment 51, which accommodates the push plate 71. The cooperation between the push plate 71 and the push plate groove 65 serves two purposes: firstly, it limits the stroke, preventing the push rod 7 from dislodging from the inner hole 62 during resetting; secondly, the push plate 71 increases the contact area between the push rod 7 and the abutment 51, resulting in smoother force transmission during linear pushing. Simultaneously, several annular retaining rings 66 are integrally formed on the inner wall of the inner hole 62 of the drive rod 6, and the push rod 7 slides within these annular retaining rings 66. The annular retaining rings 66 reduce the contact area between the push rod 7 and the wall of the inner hole 62, effectively reducing sliding friction, making the movement of the push rod 7 smoother and less strenuous, and ensuring that the push rod 7 does not deviate during long-stroke movements.
[0034] To further enhance the ease of operation and adaptability of the components, a pressure plate 67 is detachably threaded onto the end of the drive rod 6 furthest from the drive plate 61, and a push button 72 is detachably threaded onto the end of the push rod 7 furthest from the push plate 71. The pressure plate 67 provides a larger force-bearing surface, making it easy for users to pedal or press with their palm to swing the drive rod 6, especially suitable for foot-operated flush valves or confined spaces. The push button 72 is ergonomically designed for finger pressing, allowing users to easily push the push rod 7 to flush. Since both are detachable, users can choose to install or remove these accessories according to their actual needs; for example, the pressure plate 67 can be omitted in situations where only manual flushing is required.
[0035] Considering the pressurized water inside the flush valve, to prevent water leakage along the fit gap between the transmission rod 5 and the transmission rod mounting base 2, this invention includes a sealing sleeve 8 fixedly connected to the transmission rod mounting base 2. This sealing sleeve 8 is tightly fitted onto the outside of the drive rod 6, forming an interference fit. The sealing sleeve 8 reliably blocks the path of water seepage between the transmission rod 5 and the transmission rod mounting base 2, effectively avoiding water waste, slippery surfaces, and rusting of internal metal parts caused by leakage, significantly improving the sealing reliability and service life of the entire handle assembly.
[0036] In summary, the control handle assembly for the flush valve provided by this utility model integrates both swing triggering and linear triggering functions through an ingenious composite structure design. Users can choose to press the push button for manual linear flushing or step on / press the pressure plate for swing flushing, depending on their actual needs. This design not only reduces mold and inventory costs for manufacturers but also brings great convenience to end users, possessing high practical value and promising market prospects.
[0037] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 limiting the scope of protection of this utility model.
[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A control handle assembly for a flush valve, characterized in that: The device includes a handle connecting housing, a transmission rod mounting base, a transmission rod, and a drive rod. The transmission rod mounting base is threaded to the handle connecting housing, forming a contact cavity between the two. The transmission rod is slidably fitted onto the transmission rod mounting base, with one end extending into the contact cavity and the other end extending out of the mounting base. A rotating connecting sleeve is fixedly connected to the handle connecting housing. The drive rod is rotatably connected to the rotating connecting sleeve. One end of the drive rod extends into the contact cavity and is integrally formed with a drive plate. The end of the transmission rod located in the contact cavity is integrally formed with a stop plate. The transmission rod mounting base is provided with a return spring for driving the stop plate to abut against the drive plate. An axially penetrating inner hole is provided in the drive rod, and a push rod is movably fitted into the inner hole. One end of the push rod abuts against the stop plate, and the other end extends out of the inner hole.
2. The control handle assembly for a flush valve according to claim 1, characterized in that: The outer side of the drive rod has an integrally formed spherical protrusion at a position relative to the rotating connecting sleeve. The inner side of the rotating connecting sleeve has an arc-shaped inner hole for fitting the spherical protrusion and for allowing it to move inside. The spherical protrusion has rotating shafts on both sides that are rotatably fitted on the sidewalls of the arc-shaped inner hole.
3. A control handle assembly for a flush valve according to claim 1 or 2, characterized in that: The handle connecting housing has a connecting sleeve mounting threaded hole on the end away from the transmission rod mounting seat, and the rotating connecting sleeve is threadedly fixed in the connecting sleeve mounting threaded hole.
4. The control handle assembly for a flush valve according to claim 1, characterized in that: The push rod has an integrally formed push plate on the end facing the abutment, and the drive rod has a push plate groove on the end with the inner hole facing the abutment for accommodating the push plate.
5. The control handle assembly for a flush valve according to claim 1, characterized in that: The drive rod has several annular retaining rings integrally formed on the inner wall of the inner hole, and the push rod slides within the annular retaining rings.
6. The control handle assembly for a flush valve according to claim 1, characterized in that: A pressure plate is detachably threaded to the end of the drive rod away from the drive plate, and a push button is detachably threaded to the end of the push rod away from the push plate.
7. The control handle assembly for a flush valve according to claim 1, characterized in that: A sealing sleeve is fixedly connected to the drive rod mounting base. The sealing sleeve is fitted onto the outside of the drive rod and is interference-fitted with it.