# US 2023/0422353 A1 · Modular hand warmer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0422353 A1 - Document ID: US20230422353A1 - Status: Published application - Kind: A1 - Application number: 17/901,861 - Filed: 2022-09-02 - Published: 2023-12-28 - Earliest claimed: 2022-06-22 - Assignees: Shenzhen Street Cat Technology Co., LTD. - Applicants: Shenzhen Street Cat Technology Co., Ltd - Inventors: Zeda HU - Web page: https://patentgrep.com/patent/US20230422353A1 ## CPC - H05B 3/22: non-flexible - H02J 7/70: characterised by the mechanical construction - H05B 3/06: Heater elements structurally combined with coupling elements or holders - H05K 5/0086: {portable, e.g. battery operated apparatus (casings for switching devices H01H9/02)} - H05K 5/0217: {Mechanical details of casings (covers, lids, hoods or members for covering apertures H05K5/03)} - H05K 5/0247: {Electrical details of casings, e.g. terminals, passages for cables or wiring} - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A modular hand warmer includes a heating casing and a power supply component. The heating casing is hollow and provided therein with a power supply cavity. The heating casing is provided with a first outlet communicating with the power supply cavity. The heating casing is provided with a heating element. The shape of the power supply component is adapted to the power supply cavity. The power supply component is capable of being detachably inserted into the power supply cavity from the first outlet. The power supply component is capable of being electrically connected to the heating element. The first outlet is provided at the heating casing to facilitate the installation of the power supply component into the power supply cavity from the first outlet and the removal of the power supply component from the first outlet, which is conducive to the replacement and use of the power supply component. ## Claims ### Claim 1 A modular hand warmer comprising: a heating casing, wherein the heating casing is hollow, a power supply cavity is provided in the heating casing, the heating casing is provided with a first outlet communicating with the power supply cavity, and the heating casing is further provided with a heating element; and a power supply component, wherein a shape of the power supply component is adapted to the power supply cavity, the power supply component is configured to be detachably inserted into the power supply cavity from the first outlet, and the power supply component is configured to be electrically connected to the heating element. ### Claim 2 (depends on 1) The modular hand warmer according to claim 1, further comprising a buckle, wherein a surface of the heating casing is provided with a clamping slot; the power supply component is provided with a groove, the groove is located between a head and a tail of the power supply component, and the head and the tail of the power supply component are at opposite ends of the power supply component; a first end of the buckle is provided with a clamping portion, and an elastic element is arranged between a second end of the buckle and a bottom of the clamping slot, wherein the first end and the second end of the buckle are opposite ends of the buckle; the buckle is provided with a hinged portion, the hinged portion is rotatably arranged in the clamping slot, and the hinged portion is located between the first end and the second end of the buckle; and one end of the clamping slot is provided with a notch, and the clamping portion is configured to be clamped in the groove through the notch. ### Claim 3 (depends on 2) The modular hand warmer according to claim 2, wherein a surface of the head of the power supply component is an arc surface. ### Claim 4 (depends on 3) The modular hand warmer according to claim 3, wherein the clamping portion comprises a fixed rod and an elastic rod, wherein the fixed rod and the elastic rod are arranged in parallel at the first end of the buckle; one end of the fixed rod and one end of the elastic rod are clamped in the groove, a gap is formed between the fixed rod and the elastic rod, the end of the elastic rod clamped in the groove is configured to be elastically deformed, and a distance between the fixed rod and the power supply component is less than a distance between the elastic rod and the power supply component; and an included angle between a side surface of a side on a part of the elastic rod and a surface of the power supply component is an acute angle, wherein the part of the elastic rod extends into the power supply cavity, and the side on the part of the elastic rod faces the tail of the power supply component. ### Claim 5 (depends on 1) The modular hand warmer according to claim 1, wherein the power supply component is a portable power supply. ### Claim 6 (depends on 2) The modular hand warmer according to claim 2, wherein a limiting plate is arranged in the clamping slot, the limiting plate is located between the hinged portion and the clamping portion, and the limiting plate is configured to abut against the buckle. ### Claim 7 (depends on 2) The modular hand warmer according to claim 2, wherein the second end of the buckle is provided with a guide post, and the elastic element is sleeved on the guide post. ### Claim 8 (depends on 2) The modular hand warmer according to claim 2, wherein a second outlet communicating with the power supply cavity is provided at an end of the heating casing, wherein the end of the heating casing is opposite to the first outlet, and the head of the power supply component is provided with a charging interface and a universal serial bus (USB) output interface; and the charging interface and the USB output interface are located within a projection range of the second outlet on the power supply component. ### Claim 9 (depends on 8) The modular hand warmer according to claim 8, wherein a conductive post is arranged in the power supply cavity, a first end of the conductive post is located inside one end of the heating casing, a second end of the conductive post points to the first outlet, and the conductive post is configured to be electrically connected to the heating element; and a conductive hole is provided at the head of the power supply component, a central axis of the conductive hole does not coincide with a central line of the power supply component, the head of the power supply component is configured to move to the second outlet through the first outlet, the conductive post is arranged in the conductive hole, and the power supply component is configured to supply power to the heating element through the conductive post. ### Claim 10 (depends on 8) The modular hand warmer according to claim 8, wherein a distance from the head to the tail of the power supply component is greater than a distance from the first outlet to the second outlet. ### Claim 11 (depends on 2) The modular hand warmer according to claim 2, wherein the power supply component is a portable power supply. ### Claim 12 (depends on 3) The modular hand warmer according to claim 3, wherein the power supply component is a portable power supply. ### Claim 13 (depends on 4) The modular hand warmer according to claim 4, wherein the power supply component is a portable power supply. ### Claim 14 (depends on 3) The modular hand warmer according to claim 3, wherein a limiting plate is arranged in the clamping slot, the limiting plate is located between the hinged portion and the clamping portion, and the limiting plate is configured to abut against the buckle. ### Claim 15 (depends on 4) The modular hand warmer according to claim 4, wherein a limiting plate is arranged in the clamping slot, the limiting plate is located between the hinged portion and the clamping portion, and the limiting plate is configured to abut against the buckle. ### Claim 16 (depends on 3) The modular hand warmer according to claim 3, wherein the second end of the buckle is provided with a guide post, and the elastic element is sleeved on the guide post. ### Claim 17 (depends on 4) The modular hand warmer according to claim 4, wherein the second end of the buckle is provided with a guide post, and the elastic element is sleeved on the guide post. ### Claim 18 (depends on 3) The modular hand warmer according to claim 3, wherein a second outlet communicating with the power supply cavity is provided at an end of the heating casing, wherein the end of the heating casing is opposite to the first outlet, and the head of the power supply component is provided with a charging interface and a universal serial bus (USB) output interface; and the charging interface and the USB output interface are located within a projection range of the second outlet on the power supply component. ### Claim 19 (depends on 4) The modular hand warmer according to claim 4, wherein a second outlet communicating with the power supply cavity is provided at an end of the heating casing, wherein the end of the heating casing is opposite to the first outlet, and the head of the power supply component is provided with a charging interface and a universal serial bus (USB) output interface; and the charging interface and the USB output interface are located within a projection range of the second outlet on the power supply component.