# US 2019/0376537 A1 · Position-limiting device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0376537 A1 - Document ID: US20190376537A1 - Status: Published application - Kind: A1 - Application number: 16/429,109 - Filed: 2019-06-03 - Published: 2019-12-12 - Earliest claimed: 2018-06-06 - Assignees: Fivetech Technology Inc. - Applicants: Fivetech Technology Inc. - Inventors: TING-JUI WANG - Web page: https://patentgrep.com/patent/US20190376537A1 ## CPC - F16B 21/02: Releasable fastening devices locking by rotation (with snap-action F16B21/06; studs or coupling pins with resilient protrusions F16B21/08) - F16B 1/00: Devices for securing together, or preventing relative movement between, constructional elements or machine parts - F16B 2/18: using cams, levers, eccentrics, or toggles {(for connections of rods or tubes engaged telescopically F16B7/1418, F16B7/1427, F16B7/1454)} - F16D 13/757: {the adjusting device being located on or inside the clutch cover, e.g. acting on the diaphragm or on the pressure plate} - F16B 1/02: Means for securing elements of mechanisms after operation (means for bringing members to rest F16D) - F16B 5/0642: {the plates being arranged one on top of the other and in full close contact with each other} - F16B 5/065: {the plates being one on top of the other and distanced from each other, e.g. by using protrusions to keep contact and distance} - F16D 2011/006: {Locking or detent means, i.e. means to keep the clutch in engaged condition} - F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D) - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES ## Abstract A position-limiting device includes a position-limiting element and a body. The position-limiting element has a position-limiting portion and a blocking portion. The body has a corresponding blocking portion and a fitting portion. The blocking portion of the position-limiting element and the corresponding blocking portion of the body block each other such that the position-limiting element and the body are fitted together. The fitting portion is fitted to an object. The position-limiting element penetrates a position-limited component before being rotated to block or position-limit the position-limited component. Therefore, the body is fitted to the object, and the position-limiting element is rotated to position-limit or move away from the position-limited component, so as to couple together and separate the object and the position-limited component, thereby allowing two objects to be coupled together and separated repeatedly and rapidly. ## Claims ### Claim 1 A position-limiting device, comprising: a position-limiting element having a position-limiting portion and a blocking portion; and a body having a corresponding blocking portion and a fitting portion, wherein the blocking portion of the position-limiting element and the corresponding blocking portion of the body block each other, allowing the position-limiting element to be fitted to the body, the fitting portion is fitted to an object, and the position-limiting element penetrates a position-limited component before being rotated to block or position-limit the position-limited component. ### Claim 2 (depends on 1) The position-limiting device of claim 1, wherein the position-limited component further comprises a position-limiting opening portion and a body opening portion, the body opening portion position-limits non-axial or lateral movement of the body, and the position-limiting portion penetrates the position-limiting opening portion before being rotated to restrict axial movement of the position-limited component. ### Claim 3 (depends on 2) The position-limiting device of claim 2, wherein the body opening portion is of a larger size than, of a smaller size than or of the same size as the position-limiting opening portion. ### Claim 4 (depends on 1) The position-limiting device of claim 1, wherein the position-limiting portion has at least a restricting portion, and the position-limited component has at least a corresponding restricting portion, allowing the restricting portion and the corresponding restricting portion to interfere with each other or position-limit each other when the position-limiting portion undergoes rotation and position limitation. ### Claim 5 (depends on 4) The position-limiting device of claim 4, wherein, when rotated, the restricting portion generates an opposing force and thereby blocks a surface of the position-limited component, whereas, when the position-limiting portion is rotated to reach the corresponding restricting portion, the restricting portion moves to engage with the corresponding restricting portion so as to laterally or non-axially block the position-limited component. ### Claim 6 (depends on 4) The position-limiting device of claim 4, wherein the restricting portion or the corresponding restricting portion is a convex portion, concave portion, slot portion, hole portion, plane portion, engaging portion, arcuate surface portion, curved surface portion or step portion. ### Claim 7 (depends on 1) The position-limiting device of claim 1, wherein the position-limiting element has at least a control portion conducive to manual operation or tool control. ### Claim 8 (depends on 1) The position-limiting device of claim 1, wherein the position-limiting element has a joint portion, and the joint portion is fitted to the position-limiting portion or the blocking portion. ### Claim 9 (depends on 1) The position-limiting device of claim 1, further comprising a resilient component or a friction-enhancing component, the resilient component having two ends abutting against the position-limiting element and the body, respectively, to provide the position-limiting element with resilience, a damping force, friction enhancement, an automatic restoring force or an automatic reciprocating bouncing force. ### Claim 10 (depends on 9) The position-limiting device of claim 9, wherein the resilient component or the friction-enhancing component is a spring, helical spring, washer, leaf spring or sheet. ### Claim 11 (depends on 1) The position-limiting device of claim 1, wherein the fitting portion has a material engaging portion for engaging with the object. ### Claim 12 (depends on 11) The position-limiting device of claim 11, wherein the fitting portion presses against the object such that part of a material of the object enters or flows into the material engaging portion. ### Claim 13 (depends on 11) The position-limiting device of claim 11, wherein the fitting portion is compressed by a die and thereby deformed to therefore engage with the object. ### Claim 14 (depends on 1) The position-limiting device of claim 1, wherein the body has a step portion, and the position-limited component is position-limited between the step portion and the position-limiting portion. ### Claim 15 (depends on 1) The position-limiting device of claim 1, wherein the position-limiting opening portion is a slot, hole, oblong hole or notch. ### Claim 16 (depends on 1) The position-limiting device of claim 1, wherein the position-limiting element is a strip, block, sheet, lever, or resilient leaf spring. ### Claim 17 (depends on 1) The position-limiting device of claim 1, wherein the blocking portion and the corresponding blocking portion are fitted to each other by riveting, fastening, expanding, welding or engaging. ### Claim 18 (depends on 1) The position-limiting device of claim 1, wherein the position-limited component further comprises a body opening portion, the body opening portion position-limits non-axial or lateral movement of the body, and the position-limiting portion penetrates the body opening portion before being rotated to restrict axial movement of the position-limited component.