Lid member and method for installing the lid member
The cover member design addresses the inefficiencies of conventional cover members by using shorter beam members and a crossing main member, resulting in a lighter, cost-effective, and more efficient rainwater collection system.
Patent Information
- Application Number
- JP2021127875
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-08-04
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2041-08-04
AI Technical Summary
Conventional cover members for drainage channels in buried structures are heavy, costly, and inefficient in rainwater collection due to wasteful central parts that are not used for water drainage.
A cover member design featuring beam members with a shorter span and a main member that crosses these beam members, reducing the weight and material costs while enhancing rainwater collection efficiency by minimizing wasteful central parts.
The design achieves a lighter overall weight, reduces manufacturing costs, and improves rainwater collection efficiency by minimizing unused central parts, thus optimizing the structure's functionality and cost-effectiveness.
Smart Images

Figure 0007681893000001 
Figure 0007681893000002 
Figure 0007681893000003
Abstract
Claims
1. A lid member to be placed on the lid hanging portions on both sides of the buried structure, A pair of beam members arranged on the upper side of the lid hanging portion so as to span between the lid hanging portions; a lid body portion having a main member that is hung across the beam member so as to cross the beam member, A cover member, characterized in that the length of the main member in the longitudinal direction is shorter than the length of the beam member in the longitudinal direction.
2. The cover member according to claim 1 , wherein the cover body portion is detachably fixed to the beam member.
3. 3. The cover member according to claim 1, wherein the beam member is configured by assembling two substantially U-shaped members so as to embrace each other.
4. The generally U-shaped member is composed of an outer member and an inner member, The upper wall and the lower wall of the outer member are respectively overlapped and assembled to the upper wall and the lower wall of the inner member, The closure of claim 3 , wherein the outer member and the inner member have non-overlapping portions that do not overlap each other.
5. 5. The lid member according to claim 1, wherein the beam member is provided with a fixing member for fixing the lid member to an adjacent lid body.
6. A method for installing the cover member according to claim 5 on a buried structure, comprising the steps of: one of the lid bodies adjacent to the lid member is installed on the buried structure prior to the lid member and the other lid body; Next, the lid member is installed on the buried structure such that one fixing member of the lid member is inserted under the lower surface of the one lid body; Next, the other lid body is installed on the buried structure so as to cover the other fixing member of the lid member from above, An installation method characterized in that the fixing members extending laterally from both sides of the lower end of the lid member are placed against the undersides of each adjacent lid body.
Citation Information
Patent Citations
JP1980145589U
Supporting device for grating with main bars longitudinally arranged
JP2008163683A
Fixture for grating
JP2014122533A
Fireproof covering structure for channel steel
JP2018155005A
Grating and gutter
JP3133644U