Auxiliary locating mechanism for spring clamp
An auxiliary locating mechanism for spring clamp includes a curved locking plate pivotally assembled at a supporting arm to a first handle of the spring clamp and having a toothed member provided behind the supporting arm, and a rack fixedly connected at a front end to a joint of a second handle of the spring clamp and a jaw extended from the second handle with teeth formed thereon facing toward the locking plate. When the two handles are pushed at their rear ends into a clamping position, a rear end of the locking plate is simultaneously pushed to engage the toothed member with the rack and thereby locks the two handles to the clamping position. And, when a front end of the locking plate is pushed to disengage the toothed member from the rack, the two handles are automatically pushed open by a torsional spring on the spring clamp.
The present invention relates to an auxiliary locating mechanism for spring clamp, and more particularly to an auxiliary locating mechanism for spring clamp that may be conveniently operated in a manner meeting the ergonomics.
BACKGROUND OF THE INVENTION A spring clamp is mainly used to firmly and tightly clamp two work pieces together to facilitate subsequent fabricating or machining of the work pieces. For example, two planks may be clamped together using the spring clamp and then drilled or cut. To enable convenient fabricating and machining of the two clamped work pieces, an auxiliary locating mechanism is either provided between two handles of the spring clamp, as shown in
Both the conventional auxiliary locating mechanisms in
A primary object of the present invention is to provide an improved auxiliary locating mechanism for spring clamp, and the auxiliary locating mechanism may be conveniently operated in a manner meeting the ergonomics.
To achieve the above and other objects, the auxiliary locating mechanism for spring clamp according to the present invention mainly includes a curved locking plate pivotally assembled at a supporting arm to an outer side of a first handle of the spring clamp and having a toothed member provided at a distance behind the supporting arm, and a rack having a front end fixedly connected to a point near a joint of a second handle of the spring clamp and a jaw extended from the second handle for teeth formed on the rack to face toward the toothed member of the locking plate. When the two handles are forced at their rear ends to a clamping position, a rear end of the locking plate is simultaneously pushed to engage the toothed member with the rack and thereby locks the two handles to the clamping position. And, when a front end of the locking plate is pushed to disengage the toothed member from the rack, the two handles are automatically pushed open by a torsional spring on the spring clamp.
BRIEF DESCRIPTION OF THE DRAWINGSThe structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein
Please refer to
The rack 2 has a predetermined length and is provided at a front end with a through hole 22 for another screw or rivet 13 to extend therethrough, so that the rack 2 is fixedly connected at the front end to a point near a joint 41 of the other handle 4 of the spring clamp and a jaw extended from a front end of the handle 4. The rack 2 is provided along a longitudinal edge facing toward the locking plate 1 with a plurality of sequentially arranged teeth 21, which are adapted to engage with the teeth 141 on the toothed member 14. When the locking plate 1 is in a released position as shown in
Please refer to
Claims
1. An auxiliary locating mechanism for spring clamp, comprising:
- a curved locking plate being provided at an inner side facing toward a first handle of said spring clamp closer to a front end thereof with a supporting arm, on which a through hole is formed for a rivet to extend therethrough to assemble said locking plate to said first handle, such that said locking plate may be pivotally turned about said rivet relative to said first handle; and
- a rack being provided along a longitudinal edge facing toward said locking plate with a plurality of sequentially arranged teeth.
2. The auxiliary locating mechanism for spring clamp as claimed in claim 1, wherein said curved locking plate is further provided at said inner side with a sideward projected toothed member locating behind said supporting arm by a predetermined distance, and said toothed member being provided at the sideward projected edge with a plurality of teeth.
3. The auxiliary locating mechanism for spring clamp as claimed in claim 1, wherein said curved locking plate and a root of said toothed member have a predetermined space kept therebetween, and two compression springs being mounted in said space between said toothed member and said locking plate, and between rear ends of said first handle and said locking plate, respectively.
4. The auxiliary locating mechanism for spring clamp as claimed in claim 1, wherein said rack is provided at a front end with a through hole for a rivet to extend therethrough and thereby fixedly connect said rack to a point near a joint of a second handle of said spring clamp and a jaw extended from a front end of said second handle, and a clearance is normally left between said teeth of said rack and said teeth of said toothed member.
Type: Application
Filed: Jan 22, 2004
Publication Date: Jul 28, 2005
Inventor: Ferng-Jong Liou (Dah-Lii City)
Application Number: 10/761,342