Access hole covering device for hand washing sink

Abstract

The utility model relates to the technical field of access holes, in particular to an access hole covering device for a hand washing sink. The covering device comprises a vertical plate, a sliding rod and an access cover plate, the vertical plate is vertically and directionally arranged below the hand washing sink, and the vertical plate comprises an access hole and a cover plate area which are communicated with each other in the thickness direction of the vertical plate; the cover plate area comprises a cover plate accommodating cavity for accommodating the access cover plate, and a push-pull groove and a mounting groove which are positioned at the upper end and the lower end of the cover plate accommodating cavity and are communicated with the cover plate accommodating cavity; the sliding rod is inserted into the push-pull groove in a sliding mode. The access cover plate covers the access opening and is located in the cover plate area, the lower end of the access cover plate is inserted into the mounting groove, and the sliding rod is inserted into the push-pull groove in a sliding mode so as to lock or unlock the upper end of the access cover plate. According to the device, the combination of the sliding rod and the access cover plate is adopted, only the mounting groove and the push-pull groove need to be reserved in the bottom and the top of the vertical plate, the pool width space needed when the access hole is opened is greatly reduced, and reasonable utilization of precious space is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of inspection openings, in particular to an inspection opening covering device for a hand-washing sink. Background Art

[0002] In modern home design and public facilities, handwashing sinks are an indispensable part of daily life, and their importance is self-evident. They are not only a fundamental guarantee for personal hygiene but also a reflection of the image and service quality of public places. With the maturity and widespread use of prefabricated building technology, the installation and maintenance of handwashing sinks have also ushered in new challenges.

[0003] Prefabricated buildings, with their rapid construction and flexible adjustments, have become a major trend in modern architectural design. However, for prefabricated handwashing sinks, the maintenance and inspection of their internal piping systems, faucets, and drainage devices has become a major challenge in design and construction. Traditional inspection hatch designs are gradually revealing their limitations. Because they are usually designed as flip-top hatches, not only do they occupy the already narrow width of the handwashing sink, but once opened, the cover is not effectively fixed and is prone to shaking or falling off, causing inconvenience to maintenance personnel. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a maintenance opening covering device for a hand-washing sink, which solves the technical problem of insufficient space in the width direction below the hand-washing sink.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0008] A maintenance opening covering device for a handwashing sink comprises a vertical plate, a sliding rod and an maintenance cover plate. The vertical plate is vertically oriented and arranged below the handwashing sink. The vertical plate comprises an inspection opening and a cover plate area that are interconnected along its thickness direction. The cover plate area comprises a cover plate accommodating cavity for accommodating the inspection cover plate, push-pull grooves and an installation groove that are located at the upper and lower ends of the cover plate accommodating cavity and are connected to the cover plate accommodating cavity; the sliding rod can be slidably inserted into the push-pull groove; the maintenance cover plate covers the inspection opening and is located in the cover plate area, the lower end of the maintenance cover plate is inserted into the installation groove, and the sliding rod is slidably inserted into the push-pull groove to lock or unlock the upper end of the maintenance cover plate.

[0009] Due to the sliding inspection cover design, compared to the traditional flip-top inspection port, this design does not take up additional space under the hand-washing sink when closed, which is especially important for places with limited space (such as small toilets or public facilities). The up and down sliding mechanism of the inspection cover allows it to be completely hidden in the cover area when not in use, making the layout under the hand-washing sink neater and increasing the available space. The use of the sliding rod simplifies the opening and closing process of the inspection cover. The operator only needs to push the sliding rod to easily unlock or lock the inspection cover. The locking mechanism ensures that the inspection cover will not be accidentally opened when not in maintenance state, thereby avoiding safety hazards caused by shaking or falling of the cover.

[0010] The hidden design can be integrated with the appearance of the washbasin when closed, without destroying the overall beauty of the bathroom and enhancing the harmonious beauty of the bathroom.

[0011] Optionally, the push-pull groove and the installation groove are both opened in the vertical plate and extend along the length direction of the vertical plate; the sliding rod is slidably connected to the push-pull groove and part of the sliding rod extends into the cover plate accommodating cavity to limit the top of the inspection cover plate away from the side of the wash basin.

[0012] The push-pull and mounting slots extend along the length of the vertical plate, providing a longer contact surface and increasing the structural stability and strength of the entire unit. This design prevents the access cover from moving or shifting during use, ensuring its secure fit when locked.

[0013] The sliding and mounting slots are built into the vertical panels, which helps reduce the obtrusiveness of the external structure and makes the entire access hatch assembly more compact. This design makes better use of the space under the handwashing sink, without sacrificing valuable space due to the presence of the access hatch.

[0014] Part of the sliding rod extends into the cover plate accommodating cavity, which can effectively limit the top end of the inspection cover plate to prevent it from derailing or accidentally loosening during the sliding process.

[0015] Optionally, the push-pull groove includes a first vertical groove, a horizontal groove and a second vertical groove connected in sequence, the first vertical groove is close to the side of the hand-washing sink, and the second vertical groove is away from the side of the hand-washing sink. The opening directions of the two are opposite and the height positions are staggered. The first vertical groove and the horizontal groove form an inverted L-shape; the sliding rod is an irregular structure; the sliding rod includes an inverted L-shaped unit and an L-shaped unit vertically connected to each other, the inverted L-shaped unit is embedded in the first vertical groove and the horizontal groove, the L-shaped unit is partially inserted into the second vertical groove, and partially located in the cover plate accommodating cavity and fits with the upper end of the inspection cover plate to lock the inspection cover plate.

[0016] The L-shaped unit is partially inserted into the second vertical slot, and partially located in the cover accommodating cavity and tightly fits with the upper end of the inspection cover, so that when the sliding rod is in the locked position, it can ensure that the inspection cover remains stably in the closed state and will not be accidentally opened due to external force.

[0017] The opening directions of the first vertical slot and the second vertical slot are opposite and the height positions are staggered. This design makes full use of the longitudinal space of the vertical plate and can effectively lock and unlock the inspection cover even when space is limited.

[0018] By embedding the inverted L-shaped unit into the first vertical groove and the horizontal groove, the stability of the sliding rod during the sliding process is ensured, the shaking during the sliding process is reduced, and the durability and reliability of the entire device are improved.

[0019] The inverted L-shaped unit is effectively supported, which improves the stability and locking function of the sliding rod.

[0020] Optionally, the push-pull groove is a second vertical groove, and the opening direction of the second vertical groove is vertically downward; the sliding rod cross-section is an L-shaped or vertical linear structure, the sliding rod portion is embedded in the second vertical groove, the sliding rod portion is located in the cover plate accommodating cavity and is fitted with the upper end of the inspection cover plate to lock the inspection cover plate.

[0021] The push-pull slot is simplified into a single second vertical slot, eliminating the first vertical slot and horizontal slot. This simplifies the entire device structure, reduces manufacturing costs and assembly complexity. The simplified structure and linear sliding path reduce potential failure points, facilitate regular inspection and maintenance, and reduce long-term maintenance costs.

[0022] Optionally, the push-pull groove includes a first vertical groove and a horizontal groove connected in sequence, and the first vertical groove and the horizontal groove form an inverted L-shape; the cross-section of the sliding rod is an inverted concave structure; the length of the sliding rod close to the side of the hand-washing sink is greater than or equal to the length away from the side of the hand-washing sink; the sliding rod is partially embedded in the first vertical groove and the horizontal groove, and the sliding rod is partially embedded in the cover plate accommodating cavity and fits with the upper end of the inspection cover plate to lock the inspection cover plate.

[0023] By adopting an inverted L-shaped push-pull groove design, that is, a combination of the first vertical groove and the horizontal groove, the sliding rod is limited in both the vertical and horizontal directions, which enhances the stability of the sliding rod during movement, prevents unnecessary shaking, and improves the structural stability of the overall device.

[0024] The inverted concave sliding rod design, especially its length close to the side of the wash basin is greater than or equal to the length away from the side of the wash basin, means that the sliding rod can be more accurately embedded in the cover plate accommodating cavity and the push-pull groove, and fit tightly with the upper end of the inspection cover, thereby achieving a more stable locking effect.

[0025] Optionally, the inspection cover includes a movable plate and a first protrusion and a second protrusion, the first protrusion and the second protrusion are located at the top and bottom of the movable plate, and the movable plate and the first protrusion and the second protrusion are integrally formed; when the inspection cover is closed on the inspection port, the first protrusion is located in the cover accommodating cavity and is limited and locked by the sliding rod in the push-pull groove, and the second protrusion is installed in the installation groove.

[0026] The first protrusion is located in the cover plate accommodating cavity and is limited and locked by the sliding rod in the push-pull groove, which ensures the stability of the inspection cover in the closed state and prevents accidental opening due to external force or vibration.

[0027] The second protrusion is installed in the installation groove and forms a double locking mechanism together with the first protrusion, ensuring that the inspection cover is effectively fixed in all directions, thereby improving the safety and reliability of the entire device.

[0028] Since the outer surface of the movable plate and the outer surfaces of the first protrusion and the second protrusion are located in the same vertical plane, this design makes the inspection cover flush with the surface of the vertical plate when closed, reducing the protrusion, optimizing the space utilization under the washbasin, and further improving the locking effect by fitting the plane.

[0029] Optionally, the inspection cover also includes two dialing rods, which are arranged at the upper and lower parts of the inspection cover. The two dialing rods are perpendicular to the movable plate and perpendicular to the side of the movable plate away from the handwashing sink and are respectively located below the first protrusion and above the second protrusion.

[0030] The lever provides a direct grip point for the operator, making opening and closing the access panel easier and more intuitive. It also supports the sliding lever.

[0031] Optionally, when the inspection cover is closed on the inspection port, the sliding rod is installed in the push-pull groove and supported by the dial rod and / or the vertical plate itself; the surface of the vertical plate directly above the inspection port, the first protrusion and the bottom of the sliding rod are fitted in sequence to prevent the inspection cover from falling from the cover area.

[0032] Through the fit between the surface of the vertical plate, the first protrusion and the bottom of the sliding rod, and the support of the sliding rod by the dial rod and / or the vertical plate itself, the inspection cover is firmly fixed in the cover area and is not easy to fall off from the cover area even under external impact, thereby ensuring the safety of the device.

[0033] Optionally, the sliding rod further includes a shift block, which is arranged on a side of the L-shaped unit away from the handwashing sink.

[0034] The addition of the shift block provides the operator with a better grip point, making the action of pushing the slide bar more natural and effortless.

[0035] Optionally, blocking structures are provided on both sides of the vertical plate in the length direction.

[0036] The baffle structure can serve as an additional protective measure to prevent unauthorized personnel or children from opening the inspection cover at will, thereby protecting the internal pipes and devices from damage and avoiding possible safety hazards.

[0037] (3) Beneficial effects

[0038] The beneficial effects of the present utility model are as follows: the detachable inspection port combination device provided by the present application can efficiently utilize space through innovative design to meet the maintenance and inspection needs of the bottom of the hand-washing sink: compared with the traditional flip-top inspection port, the present device adopts a combination of a sliding rod and an inspection cover, and only requires installation grooves and push-pull grooves to be reserved at the bottom and top of the vertical plate, which greatly reduces the width of the sink space required when the inspection port is opened, thereby realizing the rational use of valuable space.

[0039] At the same time, it is easy to operate: the opening and closing of the inspection cover is achieved by the translation of the sliding rod in the push-pull groove. It is easy to operate and avoids the safety hazards of shaking or falling off of the traditional flip-up inspection cover, providing maintenance personnel with a safer and more stable working environment.

[0040] Locking mechanism improves stability: The upper end of the inspection cover is blocked by a sliding rod to achieve a limit lock. This ensures that the inspection port is firmly closed when not in use, preventing accidental opening and enhancing the reliability of the entire inspection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a cross-sectional view of the detachable inspection port assembly device of the present utility model;

[0042] Figure 2 This is a front view of the detachable inspection port assembly device of the present utility model;

[0043] Figure 3 This is a three-dimensional diagram of the detachable inspection port assembly device;

[0044] Figure 4 This is a three-dimensional diagram of the inspection cover;

[0045] Figure 5 This is a cross-sectional view of an inspection port assembly with a baffle structure;

[0046] Figure 6 It is a cross-sectional view of the detachable inspection port assembly without the sliding rod;

[0047] Figure 7 This is a schematic diagram of the locations of the inspection port area and the cover area;

[0048] Figure 8 This is a cross-sectional view of the sliding rod and push-pull groove of the inverted concave structure;

[0049] Figure 9 This is a cross-sectional view of the L-shaped sliding rod and push-pull groove;

[0050] Figure 10 It is a cross-sectional view of a vertical linear sliding rod and a push-pull groove;

[0051] [Description of Reference Numerals]

[0052] 1. Vertical plate; 2. Sliding rod; 3. Inspection cover; 4. Inspection port; 5. Mounting slot; 6. Push-pull slot; 7. Baffle structure; 8. Inspection port area; 9. Cover area; 10. Cover accommodating cavity;

[0053] 21. Inverted L-shaped unit; 22. L-shaped unit; 23. Dial block;

[0054] 211. First vertical structure; 212. First horizontal structure;

[0055] 221, second vertical structure; 222, second horizontal structure;

[0056] 31. movable plate; 32. first protrusion; 33. second protrusion; 34. dial lever;

[0057] 61, first vertical slot; 62, horizontal slot; 63, second vertical slot;

[0058] 611, first vertical slot opening; 612, first vertical slot inner wall; 613, first vertical slot outer wall;

[0059] 631, second vertical slot opening; 632, second vertical slot inner wall; 633, second vertical slot outer wall. DETAILED DESCRIPTION

[0060] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below with reference to the accompanying drawings and through specific embodiments. Figure 7 The orientation is referenced.

[0061] The present invention proposes a device for covering a handwashing sink access hatch (4). This device utilizes a sliding and locking mechanism to keep the access hatch (3) tightly closed when not in use, yet conveniently open when maintenance is required. This avoids the shortcomings of traditional flip-top access hatches (4). Furthermore, this design considers space efficiency, making it particularly suitable for situations where space below a handwashing sink is limited. Through these innovative features, the device not only improves the convenience of maintenance work but also enhances the overall aesthetics and safety of the handwashing sink.

[0062] The vertical plate 1 of the present application serves as the main body of the device. It is vertically installed under the hand-washing sink and contains an inspection port 4 and a cover area 9, the latter of which includes a cover accommodating cavity 10, a push-pull groove 6 and a mounting groove 5. The sliding rod 2 can slide along the push-pull groove 6 to lock or unlock the inspection cover 3. The shape of the sliding rod 2 and the design of the push-pull groove 6 vary according to the specific embodiment, including L-shaped, inverted concave or special-shaped structures to ensure that the inspection cover 3 is firmly locked. The inspection cover 3 covers the inspection port 4 and is opened and closed by inserting its lower end into the mounting groove 5 and the upper end interacting with the sliding rod 2. The inspection cover 3 also includes a first protrusion 32 and a second protrusion 33 to enhance its stability.

[0063] In addition, the dial lever 34 provides an additional gripping point, which simplifies the opening process of the inspection cover 3 and increases the convenience and safety of operation.

[0064] The shift block 23 is mounted on the sliding rod 2 , which makes it easier for the operator to control the sliding rod 2 and improves the comfort and efficiency of the operation.

[0065] The baffle structure 7 serves as an additional safety measure to prevent unauthorized opening and protect the safety of internal pipes and devices.

[0066] In this application, the direction close to the hand washing sink refers to Figure 7 The direction of the arrow in the middle is the direction of the drain pipe near the wash basin, and the direction away from the wash basin is Figure 7 The arrow in the middle indicates the direction.

[0067] To better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0068] Example 1:

[0069] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 7, a covering device for an inspection port 4 for a hand-washing sink, comprising a vertical plate 1, a sliding rod 2 and an inspection cover 3. The vertical plate 1 is vertically oriented and arranged below the hand-washing sink, and the vertical plate 1 includes an inspection port 4 and a cover area 9 that are interconnected along its thickness direction. The cover area 9 includes a cover accommodating cavity 10 for accommodating the inspection cover 3, a push-pull groove 6 and an installation groove 5 located at the upper and lower ends of the cover accommodating cavity 10 and connected to the cover accommodating cavity 10. The sliding rod 2 can be slidably inserted into the push-pull groove 6. The inspection cover 3 covers the inspection port 4 and is located in the cover area 9. The lower end of the inspection cover 3 is inserted into the installation groove 5, and the sliding rod 2 is slidably inserted into the push-pull groove 6 to lock or unlock the upper end of the inspection cover 3.

[0070] Reference Figure 3 The push-pull groove 6 and the mounting groove 5 are both formed in the vertical plate 1 and extend along the horizontal length of the vertical plate 1. The sliding rod 2 is slidably connected to the push-pull groove 6, and a portion of the sliding rod 2 extends into the cover plate receiving cavity 10 to limit the top of the inspection cover plate 3 away from the hand washing sink.

[0071] The combined design of the vertical plate 1, the sliding rod 2 and the inspection cover 3 allows the inspection cover 3 to be completely stored in the cover accommodating cavity 10 when not in use, reducing the space occupied under the handwashing sink, and is particularly suitable for places with limited space.

[0072] The sliding operation of the sliding rod 2 is simple and intuitive. The user can unlock or lock the inspection cover 3 by sliding the sliding rod 2 without the need for complicated tools or steps, thereby improving maintenance efficiency.

[0073] The arrangement of the push-pull slot 6 and the mounting slot 5 ensures the stability and safety of the inspection cover 3 during use, and avoids the problem of shaking or falling off that may occur in the traditional flip-up inspection port 4 cover.

[0074] The sliding rod 2 contacts the upper end of the inspection cover 3, which can effectively lock the inspection cover 3 to prevent unauthorized opening and protect the internal facilities from damage.

[0075] By inserting the lower end of the inspection cover 3 into the installation groove 5, the stability of the inspection cover 3 in the closed state is ensured, and the safety hazard that may be caused by accidental opening of the cover is reduced.

[0076] Reference Figure 1 and Figure 6The push-pull groove 6 includes a first vertical groove 61, a horizontal groove 62, and a second vertical groove 63 that are connected in sequence. The first vertical groove 61 is close to the side of the hand-washing sink, and the second vertical groove 63 is away from the side of the hand-washing sink. The opening directions of the first vertical groove 61 and the second vertical groove 63 are opposite and the height positions are staggered. The first vertical groove 61 and the horizontal groove 62 form an inverted L shape. The sliding rod 2 is a special-shaped structure. The sliding rod 2 includes an inverted L-shaped unit 21 and an L-shaped unit 22 that are vertically connected to each other. The inverted L-shaped unit 21 is embedded in the first vertical groove 61 and the horizontal groove 62. The L-shaped unit 22 is partially inserted into the second vertical groove 63 and partially located in the cover plate accommodating cavity 10 and fits with the upper end of the inspection cover plate 3 to lock the inspection cover plate 3.

[0077] Reference Figure 1 and Figure 6 The first vertical groove 61 includes a first vertical groove opening 611, a first vertical groove inner wall 612, and a first vertical groove outer wall 613. The first vertical groove inner wall 612 and the first vertical groove outer wall 613 are arranged relative to each other to form the first vertical groove opening 611. The first vertical groove inner wall 612 is close to the hand-washing sink and is the starting end of the thickness direction arrow, and the first vertical groove outer wall 613 is away from the hand-washing sink and is the ending end of the thickness direction arrow. The height of the first vertical groove inner wall 612 is higher than the height of the first vertical groove outer wall 613, thereby providing more effective support for the sliding rod 2. The second vertical groove 63 includes a second vertical groove opening 631, a second vertical groove inner wall 632, and a second vertical groove outer wall 633. The second vertical groove inner wall 632 and the second vertical groove outer wall 633 are arranged relative to each other, and the gap therebetween is the second vertical groove opening 631. The length of the second vertical groove outer wall 633 exceeds the length of the second vertical groove inner wall 632, thereby preventing the sliding rod 2 from falling from the second vertical groove 63 in the thickness direction.

[0078] Reference Figure 1 and Figure 6 The inverted L-shaped unit 21 includes a first vertical structure 211 and a first horizontal structure 212 that are perpendicularly connected to each other. The first vertical structure 211 is embedded in the first vertical groove 61, and the first horizontal structure 212 is embedded in the horizontal groove 62. The L-shaped unit 22 includes a second vertical structure 221 and a second horizontal structure 222 that are perpendicularly connected to each other. Part of the second vertical structure 221 is embedded in the second vertical groove 63, and part of the second vertical structure 221 and the second horizontal structure 222 are exposed outside the second vertical groove 63, that is, located in the cover plate accommodating cavity 10.

[0079] The first horizontal structure 212 is perpendicularly connected to the second vertical structure 221, and the first horizontal structure 212 is supported by the first vertical slot outer wall 613. When the access cover 3 is positioned in the mounting slot 5, the first protrusion 32 can support the first horizontal structure 212. The second vertical structure 221 and the second horizontal structure 222, located outside the second vertical slot 63, are supported by the first protrusion 32 and the dial lever 34. The second vertical structure 221, located outside the second vertical slot 63, is the same length as the first protrusion 32.

[0080] The inverted L-shaped structure formed by the first vertical slot 61, the horizontal slot 62, and the second vertical slot 63, as well as the special-shaped structure of the sliding rod 2, ensures the stability and positioning accuracy of the sliding rod 2 during the sliding process. This design prevents the sliding rod 2 from shaking during use and enhances the structural stability of the entire device.

[0081] The L-shaped unit 22 is partially inserted into the second vertical groove 63, and partially located in the cover accommodating cavity 10 and tightly fits with the upper end of the inspection cover 3, forming a precise locking mechanism, ensuring the stability of the inspection cover 3 in the closed state, and avoiding accidental opening due to external force.

[0082] The first vertical slot 61 and the second vertical slot 63 have opposite opening directions and are staggered in height. This design fully utilizes the space of the vertical plate 1 and can effectively lock and unlock the inspection cover 3 even when space is limited.

[0083] The design of the inverted L-shaped unit 21 and the L-shaped unit 22 of the sliding rod 2 allows the user to control the locking and unlocking of the inspection cover 3 through simple linear motion without complicated operating steps, thereby improving the convenience of operation.

[0084] The setting of the first vertical groove inner wall 612 and the first vertical groove outer wall 613, as well as the second vertical groove inner wall 632 and the second vertical groove outer wall 633, ensures the correct guidance of the sliding rod 2 in all directions. At the same time, the first horizontal structure 212 is supported by the first vertical groove outer wall 613, forming a perfect structural integration and increasing the stability of the sliding rod 2.

[0085] Reference Figure 1 and Figure 4 The inspection cover 3 includes a movable plate 31 and a first protrusion 32 and a second protrusion 33. The first protrusion 32 and the second protrusion 33 are located at the top and bottom of the movable plate 31. The movable plate 31 and the first protrusion 32 and the second protrusion 33 are integrally formed. The surface of the movable plate 31 near the handwashing sink and the first protrusion 32 and the second protrusion 33 near the handwashing sink are located in the same vertical plane, so that the inspection cover 3 and the inspection port 4 can be better covered. When the inspection cover 3 is closed over the inspection port 4, the first protrusion 32 is located in the cover accommodating cavity 10 and is locked by the sliding rod 2 in the push-pull groove 6. The second protrusion 33 is installed in the mounting groove 5.

[0086] Reference Figure 1 、 Figure 4 and Figure 6 The second protrusion 33 can be inserted into the mounting groove 5, the top of the first protrusion 32 is flush with the top of the first vertical groove outer wall 613, and the gap between the first protrusion 32 and the second vertical groove outer wall 633 is greater than the height of the first protrusion 32.

[0087] The first vertical slot outer wall 613, the first protrusion 32, the second vertical structure 221 disposed outside the second vertical slot 63, and the second vertical slot outer wall 633 are sequentially fitted together. The second vertical structure 221 and the second horizontal structure 222 disposed outside the second vertical slot 63 shield the first protrusion 32 to lock the access cover 3.

[0088] The first protrusion 32, the second protrusion 33 and the movable plate 31 are integrally formed to ensure the overall structural robustness of the inspection cover 3. This design reduces wear and loosening caused by prolonged use or frequent operation, thereby extending the service life of the inspection cover 3.

[0089] The first protrusion 32 is located in the cover accommodating cavity 10 and is limited and locked by the sliding rod 2 in the push-pull groove 6, ensuring the stability of the inspection cover 3 in the closed state, avoiding accidental opening due to external force, and improving safety.

[0090] The top of the first protrusion 32 is flush with the top of the first vertical slot outer wall 613, effectively supporting the sliding rod 2. The gap between the first protrusion 32 and the second vertical slot outer wall 633 ensures that the inspection cover 3 can be removed from the cover area 9 when unlocked.

[0091] The fit between the first vertical groove outer wall 613, the first protrusion 32, the second vertical structure 221 and the second vertical groove outer wall 633, and the shielding of the first protrusion 32 by the second vertical structure 221 and the second horizontal structure 222 work together to lock the inspection cover 3, ensuring the accuracy and stability of the locking mechanism.

[0092] Reference Figure 4 The inspection cover 3 also includes two dial rods 34, which are arranged at the upper and lower parts of the inspection cover 3. The two dial rods 34 are perpendicular to the side of the movable plate 31 away from the hand washing sink and are respectively located below the first protrusion 32 and above the second protrusion 33.

[0093] Reference Figure 1 and Figure 5 When the access cover 3 is closed over the inspection opening 4, the sliding rod 2 is installed in the push-pull groove 6 and supported by the pull rod 34 and / or the vertical panel 1 itself. The vertical panel 1's own support refers to the first vertical groove 61 supporting the sliding rod 2. The surface of the vertical panel 1 directly above the inspection opening 4 (the outer wall 613 of the first vertical groove), the first protrusion 32, and the bottom of the sliding rod 2 sequentially fit together to prevent the access cover 3 from falling out of the cover area 9.

[0094] The sliding rod 2 is supported by the dial rod 34, which provides additional stability when the inspection cover 3 is in the closed state. Even if it is slightly bumped or vibrated externally, the inspection cover 3 will not move easily and maintain its position in the cover area 9.

[0095] Reference Figure 3 The sliding rod 2 also includes a dial block 23, which is installed in the middle of the L-shaped unit 22 away from the hand washing sink. A through hole is set in the middle of the dial block 23 in the vertical direction, and a concave hole is correspondingly set on the dial rod 34. The pin passes through the through hole and is inserted into the concave hole.

[0096] The use of the pin strengthens the connection between the shift block 23 and the take-off rod 34, ensuring the stability of the sliding rod 2 when locking the access cover 3. This mechanical connection method can effectively prevent the sliding rod 2 from accidentally moving during operation and ensure that the access cover 3 is firmly locked in the closed state.

[0097] Reference Figure 7 , barrier structures 7 are provided on both sides of the vertical plate 1 along its length, capable of sliding thereon. The barrier structures 7 have elongated through-holes within them, through which bolts penetrate, securing the barrier structures 7 to the edges of the vertical plate 1. Under normal conditions, the barrier structures 7 move along the elongated through-holes to one side, blocking the sliding rod 2 and preventing it from moving. Under maintenance conditions, the barrier structures 7 move along the elongated through-holes to the other side, releasing the restraint on the sliding rod 2.

[0098] Example 2

[0099] The remaining structures of this embodiment are the same as those of the first embodiment, except that another push-pull groove 6 and sliding rod 2 structure are provided.

[0100] Reference Figure 9 and Figure 10 The push-pull slot 6 is a separate second vertical slot 63 , and the opening direction of the second vertical slot 63 is vertically downward.

[0101] The sliding rod 2 has an L-shaped or vertically straight structure. The sliding rod 2 (L-shaped or vertically straight) is partially embedded in the second vertical slot 63. The sliding rod 2 (L-shaped or vertically straight) is located in the cover accommodating cavity 10 and engages with the upper end of the access cover 3 to lock the access cover 3. A shift block 23 is also provided at the outer end of the L-shaped or vertically straight sliding rod 2 (away from the handwashing sink). The position and structure of the shift block 23 are the same as those in Example 1.

[0102] The push-pull slot 6 is simplified into a single second vertical slot 63 with its opening facing vertically downward, thus simplifying the structure of the entire device. This not only reduces manufacturing costs but also reduces assembly complexity, making the device easier to produce and maintain.

[0103] The L-shaped or vertical linear design of the sliding rod 2 provides a clear linear sliding path, making it easier for the operator to control the movement of the sliding rod 2 , thereby achieving locking and unlocking of the inspection cover 3 .

[0104] Example 3

[0105] The remaining structures of this embodiment are the same as those of the first embodiment, except that another push-pull groove 6 and sliding rod 2 structure are provided.

[0106] Reference Figure 8 The push-pull groove 6 includes a first vertical groove 61 and a horizontal groove 62 that are connected in sequence, and the first vertical groove 61 and the horizontal groove 62 form an inverted L shape. The sliding rod 2 is an inverted concave structure; the length of the sliding rod 2 close to the side of the hand-washing sink is greater than or equal to the length away from the side of the hand-washing sink. The sliding rod (inverted concave structure) is partially embedded in the first vertical groove 61 and the horizontal groove 62, and the sliding rod (inverted concave structure) is partially embedded in the cover plate accommodating cavity 10 and fits with the upper end of the inspection cover plate 3 to lock the inspection cover plate 3. At the same time, a shift block 23 is provided at the outer end of the sliding rod 2 with the inverted concave structure (away from the hand-washing sink), and the position and structure of the shift block 23 are the same as those in Example 1.

[0107] The inverted concave structure of the sliding rod 2 and the inverted L-shaped push-pull groove 6 provide a more stable sliding and locking mechanism. The embedding of the sliding rod 2 in the first vertical groove 61 and the horizontal groove 62 ensures smooth and precise sliding, reduces shaking, and enhances the overall stability of the structure.

[0108] The length of the sliding rod 2 close to the side of the hand-washing sink is greater than or equal to the length away from the side of the hand-washing sink. This design makes the sliding rod 2 more susceptible to support force, thereby improving the stability of the sliding rod 2.

[0109] The sliding rod 2 with an inverted concave structure is partially embedded in the cover accommodating cavity 10 and fits with the upper end of the inspection cover 3. This design provides a tighter contact surface, ensuring that the inspection cover 3 is firmly locked in the closed state, avoiding accidental opening due to external force, and improving safety.

[0110] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0111] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0112] In the present invention, unless otherwise expressly specified or limited, when a first feature is “above” or “below” a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0113] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0114] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A hand-washing sink access cover device, characterized in that: The utility model comprises a vertical plate (1), a sliding rod (2) and an inspection cover plate (3); the vertical plate (1) is vertically oriented and arranged below a hand-washing sink; the vertical plate (1) comprises an inspection port (4) and a cover plate area (9) which are interconnected along its thickness direction; the cover plate area (9) comprises a cover plate receiving cavity (10) for receiving the inspection cover plate (3), a push-pull groove (6) and an installation groove (5) which are located at the upper and lower ends of the cover plate receiving cavity (10) and are connected to the cover plate receiving cavity (10); The sliding rod (2) is slidably inserted into the push-pull groove (6); The inspection cover (3) covers the inspection port (4) and is located in the cover area (9), the lower end of the inspection cover (3) is inserted into the installation groove (5), and the sliding rod (2) is slidably inserted into the push-pull groove (6) to lock or unlock the upper end of the inspection cover (3).

2. The inspection port covering device for a hand-washing sink according to claim 1, characterized in that: The push-pull groove (6) and the installation groove (5) are both provided in the vertical plate (1) and extend along the length direction of the vertical plate (1); The sliding rod (2) is slidably connected to the push-pull groove (6), and the sliding rod (2) partially extends into the cover plate accommodating cavity (10) to limit the top end of the inspection cover plate (3) away from the side of the hand washing sink.

3. The inspection opening covering device for a hand-washing sink according to claim 2, characterized in that: The push-pull groove (6) comprises a first vertical groove (61), a horizontal groove (62) and a second vertical groove (63) which are connected in sequence, wherein the first vertical groove (61) is close to one side of the hand-washing sink, and the second vertical groove (63) is away from one side of the hand-washing sink, and the two vertical grooves have opposite opening directions and are staggered in height, and the first vertical groove (61) and the horizontal groove (62) form an inverted L-shape; The sliding rod (2) comprises an inverted L-shaped unit (21) and an L-shaped unit (22) vertically connected to each other, wherein the inverted L-shaped unit (21) is embedded in the first vertical groove (61) and the horizontal groove (62), and the L-shaped unit (22) is partially inserted into the second vertical groove (63) and partially located in the cover plate accommodating cavity (10) and abutted against the upper end of the inspection cover plate (3) to lock the inspection cover plate (3).

4. The inspection port covering device for a hand-washing sink according to claim 2, characterized in that: The push-pull groove (6) is a second vertical groove (63), and the opening direction of the second vertical groove (63) is vertically downward; The cross section of the sliding rod (2) is L-shaped or vertically linear, and the sliding rod (2) is partially embedded in the second vertical groove (63). The sliding rod (2) is partially located in the cover plate accommodating cavity (10) and fits with the upper end of the inspection cover plate (3) to lock the inspection cover plate (3).

5. The inspection opening covering device for a hand-washing sink according to claim 2, characterized in that: The push-pull groove (6) comprises a first vertical groove (61) and a horizontal groove (62) which are connected in sequence, and the first vertical groove (61) and the horizontal groove (62) form an inverted L shape; The cross section of the sliding rod (2) is an inverted concave structure; The sliding rod (2) is partially embedded in the first vertical groove (61) and the horizontal groove (62), and the sliding rod (2) is partially embedded in the cover plate accommodating cavity (10) and fits with the upper end of the inspection cover plate (3) to lock the inspection cover plate (3).

6. The inspection port covering device for a hand-washing sink according to claim 2, characterized in that: The inspection cover (3) comprises a movable plate (31), a first protrusion (32) and a second protrusion (33), The first protrusion (32) and the second protrusion (33) are located at the top and bottom of the movable plate (31), and the movable plate (31), the first protrusion (32) and the second protrusion (33) are integrally formed; when the inspection cover (3) is closed on the inspection port (4), the first protrusion (32) is located in the cover accommodating cavity (10) and is limited and locked by the sliding rod (2) in the push-pull groove (6), and the second protrusion (33) is installed in the installation groove (5).

7. The inspection opening covering device for a hand-washing sink according to claim 6, characterized in that: The inspection cover (3) further comprises two dialing rods (34), which are arranged at the upper and lower parts of the inspection cover (3), and are perpendicular to the side of the movable plate (31) away from the hand washing sink and are respectively located below the first protrusion (32) and above the second protrusion (33).

8. The inspection opening covering device for a hand-washing sink according to claim 7, characterized in that: When the inspection cover (3) is closed on the inspection opening (4), the sliding rod (2) is embedded in the push-pull groove (6) and supported by the dialing rod (34) and / or the vertical plate (1) itself; The surface of the vertical plate (1) directly above the inspection port (4), the first protrusion (32) and the bottom of the sliding rod (2) are sequentially fitted.

9. The inspection port covering device for a hand-washing sink according to claim 3, characterized in that: The sliding rod (2) further comprises a shifting block (23), and the shifting block (23) is arranged on a side of the L-shaped unit (22) away from the handwashing sink.

10. The inspection port covering device for a hand-washing sink according to claim 1, characterized in that: Blocking plate structures (7) are provided on both sides of the vertical plate (1) in the length direction.

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