1. A hole plug for plugging a hole of a plate material, comprising:
a head portion;
a leg portion including a cylindrical inner wall downwardly protruding from the head portion, and having a folded portion provided at a lower end thereof and formed as a rigid-body portion; and an outer wall extending upwardly from the folded portion along the inner wall to form a gap between the inner wall and the outer wall, and having locking claws arranged on the outer wall to be spaced apart from each other, an outer wall upper portion, and a bendable thin-walled portion arranged between the outer wall upper portion and the folded portion, between the locking claws; and
a flange portion protruding outwardly from an upper end portion of the outer wall of the leg portion,
wherein the thin-walled portion is thinner than the inner wall and the outer wall upper portion, and is longer than the folded portion relative to an insertion direction of the hole plug, and
after the leg portion is inserted, for locking, to the hole of the plate material, when the folded portion is pushed upwardly, the thin-walled portion is bent elastically to change from a first usage condition in which the outer wall is locked in the hole with the locking claws in a non-bending state, to a second usage condition in which the locking claws are pushed outwardly to thereby firmly contact the locking claws with an edge of the hole.
2. The hole plug according to claim 1, wherein in the second usage condition, the outer wall forms a first bend portion wherein a vicinity of the folded portion in the thin-walled portion is bent, and a second bend portion wherein a vicinity of the locking claw in the thin-walled portion is bent.
3. The hole plug according to claim 2, wherein the rigid-body portion has a thickness in au insertion direction thicker than the thin-walled portion of the outer wall to prevent the locking claw from falling inward in the second usage condition, and to maintain an abutting state of the locking claw relative to the plate material.
4. The hole plug according to claim 1, wherein the inner wall in the second usage condition is displaced from the plate material relative to a position in the first usage condition together with the head portion, and
the outer wall upper portion in the second usage condition is displaced inward relative to the position in the first usage condition, and the locking claws are displaced outward.
5. The hole plug according to claim 1, wherein the head portion in the first usage condition is located at a same height as a connecting portion between the flange portion and the outer wall.
6. The hole plug according to claim 1, wherein the outer will is configured to automatically return to the first usage condition after transitioning to the second usage condition.
7. The hole plug according to claim 1, wherein the thin-walled portion has a first bend portion and a second bend portion, in the second usage condition;
the first bend portion is a portion where the thin-walled portion is bent at a boundary with the folded portion, and the second bend portion is a portion where the thin-walled portion is bent at a vicinity of the locking claw; and
a distance between the first bend portion and the second bend portion is longer than a distance between an outer end face portion of the folded portion and the first bend portion, in the second usage condition.
8. The hole plug according to claim 7, wherein the head portion in the second usage condition is located at a position higher than the head portion in the first usage condition.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An apparatus for detecting sealability of a lithium ion cell, the apparatus comprising:
a container containing a detecting liquid;
a clamp configured for clipping and positioning the measured lithium ion cell in the container;
a high-pressure gas joint member in communication with an injecting hole of the measured cell by one end thereof, the other end being in communication with a high-pressure gas supply; and
an elevator configured for controlling the clamp to move the measured cell into and out the detecting liquid within the container.
2. The apparatus as claimed in claim 1, wherein the elevator comprises a movable bracket and an energy supply for driving the movement of the bracket, the clamp being secured to the bracket.
3. The apparatus as claimed in claim 2, wherein the energy supply is disposed on a supporting member, the bracket engaging the supporting member through a guide rail and a guide groove.
4. The apparatus as claimed in claim 1, wherein the container has an opening covered by a cover, the cover defining an aperture allowing the clamp to pass through.
5. The apparatus as claimed in claim 1, wherein the container is made of a transparent material and is disposed on a baseboard, a rotating platform being attached to the baseboard for driving the container to rotate.
6. The apparatus as claimed in claim 5, further comprising a lighting device disposed around a peripheral of the container.
7. The apparatus as claimed in claim 1, wherein the clamp comprises a base, a connecting member, a spring both disposed on the base, a housing accommodating the spring, and a sealing member both disposed on the base, the connecting member projecting out of an end of the housing and being connected to an energy supply, the two ends of the spring being respectively connected to the connecting member and the sealing member, the sealing member slidably engaging the housing, the sealing member and the base cooperatively forming a receiving space for holding the measured cell therein.
8. The apparatus as claimed in claim 7, wherein the high-pressure gas joint member is a gas passage defined inside the sealing member of the clamp, the gas passage communicating the injecting hole of the measured cell to the high-pressure gas supply.
9. The apparatus as claimed in claim 8, further comprising a gasket disposed at a bottom surface of the sealing member.
10. The apparatus as claimed in claim 7, wherein the energy supply is one of a gas cylinder, an electromotion motor, and a pneumatic motor.