# US 2014/0360335 A1 · Saw blade clamping device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0360335 A1 - Document ID: US20140360335A1 - Status: Published application - Kind: A1 - Application number: 14/372,592 - Filed: 2013-01-15 - Published: 2014-12-11 - Earliest claimed: 2012-01-16 - Assignees: Bosch Power Tools (China) Co., Ltd. - Applicants: Bosch Power Tools (China) Co., Ltd.; Robert Bosch GmbH - Inventors: Yanchao Wang - Web page: https://patentgrep.com/patent/US20140360335A1 ## CPC - B23D 51/10: for hand-held or hand-operated devices - B23D 49/16: actuated by electric or magnetic power or prime movers (B23D49/11 takes precedence) - Y10T 83/9481: Tool is single element reciprocable along elongate cutting edge [e.g., saw blade, etc.] - B23D: PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR (making toothed gears or the like B23F; cutting metal by applying heat locally B23K; arrangements for copying or controlling B23Q) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A saw blade clamping device for a linearly reciprocating type sawing machine is able to clamp at least two types of saw blades, comprising a clamping seat having a connecting portion and a loading portion with a loading slot; an operating member comprising an operating portion and assembling and loading ends formed on opposite ends of the operating portion respectively, the operating portion being assembled around the loading portion by the help of the assembling end, and the loading end being provided with a loading port; and an abutting element disposed between the operating member and the clamping seat and having an abutting end which can extend into the loading slot, wherein the operating member is able to be rotated with respect to the loading portion, an inner wall of the operating member is provided with a driving surface formed in the form of a curved surface, the abutting element is provided with a driving end which abuts against the driving surface, and the abutting end of the abutting element is driven by the driving surface during the rotation of the operating member to move into the loading slot. ## Claims ### Claim 1 A saw blade clamping device for a linearly reciprocating type sawing machine being configured to clamp at least two types of saw blades, comprising: a clamping seat having a connecting portion configured to be driven by the linearly reciprocating type sawing machine and a loading portion formed by extending from the connecting portion, the loading portion being configured with a loading slot; an operating member comprising an operating portion with an assembling end and a loading end formed on opposite ends of the operating portion respectively, the operating portion being assembled around the loading portion of the clamping seat with assistance from the assembling end, the loading end being configured with a loading port; and an abutting element disposed between the operating member and the clamping seat, the abutting element having an abutting end configured to extend into the loading slot, wherein the operating member is configured to be rotated with respect to the loading portion, an inner wall of the operating member is configured with a driving surface formed in the form of a curved surface, the abutting element is configured with a driving end that abuts against the driving surface, and the abutting end of the abutting element is configured to be driven by the driving surface during the rotation of the operating member to move in a direction of extending into the loading slot to abut against and fix an inserted saw blade. ### Claim 2 (depends on 1) The saw blade clamping device of claim 1, wherein the abutting element comprises a U-shaped member and a fixing pin, the U-shaped member comprising a protrusion configured on a U-shaped portion and two branched arms extending from the U-shaped portion, the fixing pin comprising a first top end and a second top end, the protrusion and the second top end acting as the driving end of the abutting element, and the tip ends of the branched arms and the first top end acting as the abutting end of the abutting element. ### Claim 3 (depends on 2) The saw blade clamping device of claim 2, wherein the loading portion is in the form of a cylinder and comprises a first clamping piece and a second clamping piece, the loading slot extending in the longitudinal direction of the loading portion between the first clamping piece and the second clamping piece. ### Claim 4 (depends on 3) The saw blade clamping device of claim 3, wherein a notch is configured on each of opposite sides of the first clamping piece, and a through hole is configured in the second clamping piece, the notches and the through hole communicating with the loading slot. ### Claim 5 (depends on 4) The saw blade clamping device of claim 4, wherein the two branched arms of the U-shaped member are received in the two notches of the first clamping piece respectively, and the fixing pin is received in the through hole of the second clamping piece. ### Claim 6 (depends on 5) The saw blade clamping device of claim 5, wherein the driving surface on the inner wall of the operating member comprises a first driving surface and a second driving surface, the first driving surface and the second driving surface being configured to drive the U-shaped member and the fixing pin to move in directions of extending into the loading slot respectively. ### Claim 7 (depends on 5) The saw blade clamping device of claim 5, wherein a holding member in the form of a cylindrical sleeve is assembled around the loading portion, and the holding member is formed with a through cut and an aperture, the through cut being aligned with the notches of the first clamping piece, the aperture being aligned with the through hole of the second clamping piece, the U-shaped member being assembled to the first clamping piece through the through cut of the holding member, and the fixing pin being received in the through hole of the second clamping piece through the aperture. ### Claim 8 (depends on 1) The saw blade clamping device of claim 1, wherein the loading port is defined by two narrow slots intersecting with each other and having different lengths, the narrow slot having the smaller length being configured for fixedly holding one type of the saw blades into the loading slot. ### Claim 9 (depends on 8) The saw blade clamping device of claim 8, wherein the loading slot is configured with an opening, and the narrow slots of the loading port, which have different lengths, overlap the opening of the loading slot alternately as the operating member rotates. ### Claim 10 (depends on 9) The saw blade clamping device of claim 9, wherein each of the narrow slots is formed by a pair of opposing sectors. ### Claim 11 (depends on 1) The saw blade clamping device of claim 1, further comprising an elastic member disposed between the operating member and the loading portion, the elastic member being configured to provide a spring force in a circumferential direction between the operating member and the loading portion. ### Claim 12 (depends on 1) The saw blade clamping device of claim 1, wherein screws that are engageable with each other are configured between the operating member and the loading portion. ### Claim 13 (depends on 1) The saw blade clamping device of claim 1, wherein the operating member and the loading port are formed as separate members which are detachable from each other.