초록 ▼

To provide a board unit having an insertion-extraction handle locking structure with which a desired locking force can be easily generated and the locking force is hardly lowered, and which is low in production cost. An insertion-extraction handle 5 is rotatably supported by a panel body 4. A sprin

To provide a board unit having an insertion-extraction handle locking structure with which a desired locking force can be easily generated and the locking force is hardly lowered, and which is low in production cost. An insertion-extraction handle 5 is rotatably supported by a panel body 4. A spring unit 6 is resiliently held in a spring receiving hole 45 formed in the panel body 4 and has a first spring part 61 which, when a stopper part 53 of the insertion-extraction handle 5 is inserted into the spring receiving hole 45, applies a resistance to the insertion of the stopper part 53, and which, when the stopper part 53 is extracted from the spring receiving hole 45, applies a resistance to the extraction of the stopper part 53. Second spring parts 62 of the spring unit 6 are configured to generate a resistance to removal of the spring unit 6 which is greater than the resistance to the insertion of the stopper part 53 between the spring unit 6 and the spring receiving hole 45 when the stopper part 53 is inserted into the spring receiving hole 45 and to generate a resistance to removal of the spring unit 6 which is greater than the resistance to the extraction of the stopper part 53 between the spring unit 6 and the spring receiving hole 45 when the stopper part 53 is extracted from the stopper receiving hole 45.

대표청구항 ▼

What is claimed is: 1. A board unit removably attachable to a board housing frame, comprising: a board body; a panel body for fixedly supporting the board body, the panel body having a stopper insertion hole; an insertion-extraction handle rotatably supported by the panel body having: an operation

What is claimed is: 1. A board unit removably attachable to a board housing frame, comprising: a board body; a panel body for fixedly supporting the board body, the panel body having a stopper insertion hole; an insertion-extraction handle rotatably supported by the panel body having: an operation part, a frame engaging part configured to be engaged with a part of the board housing frame when the operation part is rotated to a specific fixed position and to be disengaged from the board housing frame when the operation part is rotated to a specific release position, and a stopper part configured to be inserted into the stopper insertion hole when the operation part is rotated to the fixed position and to be extracted from the stopper insertion hole when the operation part is rotated to the release position; and a spring unit non-fixedly held either in the stopper insertion hole or on the insertion-extraction handle, the spring unit having a main spring part which, when the stopper part is inserted into the stopper insertion hole, applies a prescribed resistance to the insertion of the stopper part on the insertion-extraction handle, and which, when the stopper part is extracted from the stopper insertion hole, applies a prescribed resistance to the extraction of the stopper part on the insertion-extraction handle. 2. The board unit of claim 1, wherein the board body is disposed generally in parallel to the direction in which the board unit is inserted into or extracted from the board housing frame; wherein the panel body has: a generally flat side panel disposed generally in parallel to the board body, and a generally flat front panel extending from the extraction side end of the side panel in a direction generally perpendicular to the direction in which the board unit is inserted into or extracted from the board housing frame, the stopper insertion hole being formed through the front panel; wherein the insertion-extraction handle also has: a base part rotatably supported by. the panel body, and a rod part extending from the base part, the frame engaging part being formed continuously with the base part, the stopper part being formed on an intermediate portion of the rod part, the operation part being formed on the other end of the rod part, the base part being located substantially inside the front panel, the rod part being configured to be located outside the front panel and extend adjacent to and generally parallel to the front panel when the operation part is in the fixed position, and to be located outside the front panel and erected from the front panel when the operation part is in the release position, the stopper part being configured to be located inside the front panel when the operation part is in the fixed position, and to be located outside the front panel when the operation part is in the release position; and wherein the main spring part of the spring unit is configured to be located inside the front panel at least when the operation part is in the fixed position. 3. The board unit of claim 2, wherein the base part of the insertion-extraction handle is located in a gap between the board body and the side panel, and the stopper part of the insertion-extraction handle and the main spring part of the spring unit are located in the gap at least when the operation part is in the fixed position. 4. The board unit of claim 1, further comprising urging means for urging the insertion-extraction handle in the direction in. which the operation part of the insertion-extraction handle is rotated from the fixed position to the release position. 5. The board unit of claim 1, wherein the spring unit is held in the stopper insertion hole, the main spring part being configured to be brought into contact with the stopper part when the stopper part is inserted into the stopper insertion hole and deformed to generate a resistance to the insertion of the stopper part, and to be brought into contact with the stopper part when the stopper part is extracted from the stopper insertion hole and deformed to generate a resistance to the extraction of the stopper part, the spring unit also having an insertion hole engaging part which is non-fixedly engaged with the stopper insertion hole and which is configured to generate a resistance to removal of the spring unit which is greater than the resistance to the insertion of the stopper part between the spring unit and the stopper insertion hole when the stopper part is inserted into the stopper insertion hole, and to generate a resistance to removal of the spring unit which is greater than the resistance to the extraction of the stopper part between the spring unit and the stopper insertion hole when the stopper part is extracted from the stopper insertion hole. 6. The board unit of claim 5, wherein the main spring part and the insertion hole engaging part of the spring unit are integrally formed of a plate spring material. 7. The board unit of claim 1, wherein the spring unit is held on the insertion-extraction handle at a position in the vicinity of the stopper part, the main spring part is configured to be brought into. contact with an edge of the stopper insertion hole when the stopper part is inserted into the stopper insertion hole and deformed to generate a resistance to the insertion of the stopper part, and to be brought into contact with the edge of the stopper insertion hole when the stopper part is extracted from the stopper insertion hole and deformed to generate a resistance to the extraction of the stopper part, the spring unit also having a handle engaging part which is non-fixedly engaged with the insertion-extraction handle and which is configured to generate a resistance to removal of the spring unit which is greater than the resistance to the insertion of the stopper part between the spring unit and the insertion-extraction handle when the stopper part is inserted into the stopper insertion hole, and to generate a resistance to removal of the spring unit which is greater than the resistance to the extraction of the stopper part between the spring unit and the insertion-extraction handle when the stopper part is extracted from the stopper insertion hole. 8. The board unit of claim 7, wherein the main spring part and the handle engaging part of the spring unit are integrally formed of a plate spring material. 9. The board unit of claim 2, wherein the spring unit is held in the stopper insertion hole, the main spring part being configured to be brought into contact with the stopper part when the stopper part is inserted into the stopper insertion hole and deformed to generate a resistance to the insertion of the stopper part, and to be brought into contact with the stopper part when the stopper part is extracted from the stopper insertion hole and deformed to generate a resistance to the extraction of the stopper part, the spring unit also having an insertion hole engaging part which is non-fixedly engaged with the stopper insertion hole and which is configured to generate a resistance to removal of the spring unit which is greater than the resistance to the insertion of the stopper part between the spring unit and the stopper insertion hole when the stopper part is inserted into the stopper insertion hole, and to generate a resistance to removal of the spring unit which is greater than the resistance to the extraction of the stopper part between the spring unit and the stopper insertion hole when the stopper part is extracted from the stopper insertion hole. 10. The board unit of claim 9, wherein the main spring part and the insertion hole engaging part of the spring unit are integrally formed of a plate spring material. 11. The board unit of claim 2, wherein the spring unit is held on the insertion-extraction handle at a position in the vicinity of the stopper part, the main spring part is configured to be brought into contact with an edge of the stopper insertion hole when the stopper part is inserted into the stopper insertion hole and deformed to generate a resistance to the insertion of the stopper part, and to be brought into contact with the edge of the stopper insertion hole when the stopper part is extracted from the stopper insertion hole and deformed to generate a resistance to the extraction of the stopper part, the spring unit also having a handle engaging part which is non-fixedly engaged with the insertion-extraction handle and which is configured to generate a resistance to removal of the spring unit which is greater than the resistance to the insertion of the stopper part between the spring unit and the insertion-extraction handle when the stopper part is inserted into the stopper insertion hole, and to generate a resistance to removal of the spring unit which is greater than the resistance to the extraction of the stopper part between the spring unit and the insertion-extraction handle when the stopper part is extracted from the stopper insertion hole. 12. The board unit of claim 11, wherein the main spring part and the handle engaging part of the spring unit are integrally formed of a plate spring material. 13. The board unit of claim 3, wherein the spring unit is held in the stopper insertion hole, the main spring part being configured to be brought into contact with the stopper part when the stopper part is inserted into the stopper insertion hole and deformed to generate a resistance to the insertion of the stopper part, and to be brought into contact with the stopper part when the stopper part is extracted from the stopper insertion hole and deformed to generate a resistance to the extraction of the stopper part, the spring unit also having an insertion hole engaging part which is non-fixedly engaged with the stopper insertion hole and which is configured to generate a resistance to removal of the spring unit which is greater than the resistance to the insertion of the stopper part between the spring unit and the stopper insertion hole when the stopper part is inserted into the stopper insertion hole, and to generate a resistance to removal of the spring unit which is greater than the resistance to the extraction of the stopper part between the spring unit and the stopper insertion hole when the stopper part is extracted from the stopper insertion hole. 14. The board unit of claim 13, wherein the main spring part and the insertion hole engaging part of the spring unit are integrally formed of a plate spring material. 15. The board unit of claim 3, wherein the spring unit is held on the insertion-extraction handle at a position in the vicinity of the stopper part, the main spring part is configured to be brought into contact with an edge of the stopper insertion hole when the stopper part is inserted into the stopper insertion hole and deformed to generate a resistance to the insertion of the stopper part, and to be brought into contact with the edge of the stopper insertion hole when the stopper part is extracted from the stopper insertion hole and deformed to generate a resistance to the extraction of the stopper part, the spring unit also having a handle engaging part which is non-fixedly engaged with the insertion-extraction handle and which is configured to generate a resistance to removal of the spring unit which is greater than the resistance to the insertion of the stopper part between the spring unit and the insertion-extraction handle when the stopper part is inserted into the stopper insertion hole, and to generate a resistance to removal of the spring unit which is greater than the resistance to the extraction of the stopper part between the spring unit and the insertion-extraction handle when the stopper part is extracted from the stopper insertion hole. 16. The board unit of claim 15, wherein the main spring part and the handle engaging part of the spring unit are integrally formed of a plate spring material. 17. The board unit of claim 4, wherein the spring unit is held in the stopper insertion hole, the main spring part being configured to be brought into contact with the stopper part when the stopper part is inserted into the stopper insertion hole and deformed to generate a resistance to the insertion of the stopper part, and to be brought into contact with the stopper part when the stopper part is extracted from the stopper insertion hole and deformed to generate a resistance to the extraction of the stopper part, the spring unit also having an insertion hole engaging part which is non-fixedly engaged with the stopper insertion hole and which is configured to generate a resistance to removal of the spring unit which is greater than the resistance to the insertion of the stopper part between the spring unit and the stopper insertion hole when the stopper part is inserted into the stopper insertion hole, and to generate a resistance to removal of the spring unit which is greater than the resistance to the extraction of the stopper part between the spring unit and the stopper insertion hole when the stopper part is extracted from the stopper insertion hole. 18. The board unit of claim 17, wherein the main spring part and the insertion hole engaging part of the spring unit are integrally formed of a plate spring material. 19. The board unit of claim 4, wherein the spring unit is held on the insertion-extraction handle at a position in the vicinity of the stopper part, the main spring part is configured to be brought into contact with an edge of the stopper insertion hole when the stopper part is inserted into the stopper insertion hole and deformed to generate a resistance to the insertion of the stopper part, and to be brought into contact with the edge of the stopper insertion hole when the stopper part is extracted from the stopper insertion hole and deformed to generate a resistance to the extraction of the stopper part, the spring unit also having a handle engaging part which is non-fixedly engaged with the insertion-extraction handle and which is configured to generate a resistance to removal of the spring unit which is greater than the resistance to the insertion of the stopper part between the spring unit and the insertion-extraction handle when the stopper part is inserted into the stopper insertion hole, and to generate a resistance to removal of the spring unit which is greater than the resistance to the extraction of the stopper part between the spring unit and the insertion-extraction handle when the stopper part is extracted from the stopper insertion hole. 20. The board unit of claim 19, wherein the main spring part and the handle engaging part of the spring unit are integrally formed of a plate spring material.