CN110788644B

CN110788644B - Flat tongs capable of being clamped and loosened quickly

Info

Publication number: CN110788644B
Application number: CN201911010157.1A
Authority: CN
Inventors: 鞠全奎; 叶元昶; 肖国华
Original assignee: Zhejiang Business Technology Institute
Current assignee: Linyi Industry Research Institute Co.,Ltd.
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2021-11-26
Anticipated expiration: 2039-10-23
Also published as: CN110788644A

Abstract

The invention discloses a flat tongs capable of being quickly clamped and loosened, which comprises an active clamping piece, a passive clamping piece and a tongs seat, wherein a passive clamping mechanism is fixed on the tongs seat, the tongs seat is provided with a through groove perpendicular to the passive clamping piece, slide bars are arranged on two sides of the bottom of the through groove of the tongs seat, a moving mechanism for fixing active clamping quaternary ammonium is arranged, the tongs seat comprises a rotating piece, a hinged piece, two locking pieces and a rotating rod with a handle, the bottom of the rotating piece is hinged with the top of the hinged piece, a rotating plane is perpendicular to the slide bars, the hinged piece is partially arranged in the through groove, the two locking pieces are fixed on the hinged piece and are respectively in close contact with the two slide bars, the rotating rod is connected with the rotating piece, and the two locking pieces can be separated from the two slide bars by the rotation of the rotating rod. The clamping device has the beneficial effect that the clamping device has the characteristic of convenience in operation on the premise of better clamping stability.

Description

Flat tongs capable of being clamped and loosened quickly

Technical Field

The invention relates to flat tongs, in particular to flat tongs capable of being clamped and loosened quickly.

Background

A flat-nose pliers, also known as a machine vice, is a universal fixture, is usually used for mounting small-sized workpieces, is a random accessory of a milling machine and a drilling machine, is fixed on a machine tool workbench and is used for clamping the workpieces for cutting. The assembly structure of the traditional flat tongs is detachable threaded connection and pin connection; the linear motion of the movable clamp body is converted from spiral motion; the working surface is the friction surface of screw pair, guide rail pair and clearance fit shaft and hole. The flat tongs are simple in composition and compact in structure. The traditional flat-nose pliers need to rotate during operation due to the requirement for higher stability of clamping objects, and the spiral motion is converted into linear motion, so that the moving speed of the flat-nose pliers is lower, the objects with different sizes need to be repeatedly clamped, and the technical problem can be solved if the flat-nose pliers can be conveniently operated while keeping the better clamping stability.

Disclosure of Invention

The invention aims to solve the technical problem of providing flat tongs capable of being clamped and loosened quickly, and the flat tongs have the characteristic of convenience in operation on the premise of good clamping stability.

The invention is realized by the following technical scheme.

The utility model provides a flat-nose pliers that can tight unclamp fast, includes initiative holder, passive holder, pincers seat, passive holder is fixed the pincers seat, the pincers seat have with passive holder vertically leads to the groove, the pincers seat is located the bottom both sides that lead to the groove are provided with the slide bar, are provided with fixedly the moving mechanism of initiative holder, it includes rotates piece, articulated elements, two locking pieces, the bull stick that has the handle, the bottom of rotating the piece with the top of articulated elements is articulated and the rotation plane is perpendicular the slide bar, the articulated elements part is located lead to the groove, two the locking piece is fixed the articulated elements to respectively with two slide bar in close contact with, the bull stick is connected rotate the piece, the rotation of bull stick can make two the locking piece with two the slide bar separation.

Different from the mode that changes helical motion into linear motion among the prior art, can make the locking piece displacement through slightly rotating the handle to make the close contact state of locking piece and slide bar change into and loosen the state, then can move initiative holder towards passive holder rapidly through promoting the handle, rotate the handle again after pressing from both sides tight article and resume the close contact state of locking piece and slide bar, thereby realize flat-nose pliers's function.

Furthermore, the moving mechanism further comprises a fixed seat, the fixed seat is assembled in a sliding mode through the through groove, positioning parts are arranged on the front portion and the rear portion of the fixed seat respectively, the fixed seat is located in a space for containing the positioning parts, the two positioning parts are provided with through holes for the rotating rods to penetrate through, and one end of each rotating rod is connected and arranged to be close to the positioning part of the passive clamping piece.

Furthermore, the upper part of the hinged part is positioned in the space of the fixed seat accommodating positioning part, and the left side surface and the right side surface of the hinged part are in clearance fit with the fixed seat.

The setting up of fixing base plays the effect of protection rotation piece on the one hand and ensures that rotation piece can not take place the dislocation phenomenon along the fore-and-aft direction, also plays the guard action to the upper portion of articulated elements simultaneously, and on the other hand it has restricted the rotation range of articulated elements, has played the compact type of protection overall structure.

Furthermore, the moving mechanism further comprises a shell and a rear cover, wherein the top surfaces of the two sides of the through groove of the clamp seat are provided with slideways parallel to the through groove, the shell is slidably assembled on the slideways and buckled outside the fixed seat, the front end and the rear end of the shell are respectively fixed with the driving clamping piece and the rear cover, and the rear cover is provided with a through hole for the rotating rod to pass through.

The shell and the rear cover are used as a shell mechanism of the whole moving mechanism, the protection effect of the whole structure is achieved, and the moving mechanism moves more stably and smoothly on the clamp seat through the defined matching of the shell and the sliding way.

Further, a fixing plate is fixed at the bottom of the hinge, and the two locking pieces are fixed on the fixing plate.

Further, the top surface of the locking member is in close contact with the slide bar and is an arc surface matching the shape of the slide bar, and the central angle of the arc of the cross section of the portion of the slide bar in contact with the top surface of the locking member is 50-100 °.

The top surface of the locking piece is set to be an arc surface matched with the shape of the sliding rod, and the circle center angle of the arc line of the section enables the locking piece to have a good fixing effect with the sliding rod.

Further, the top surface of the locking piece is provided with anti-slip strips which are equally spaced and perpendicular to the axial direction of the sliding rod.

The arrangement of the anti-slip strips obviously enhances the friction coefficient between the locking piece and the sliding rod, and further improves the locking performance.

Further, the fixed plate is located below the two slide bars, the fixed plate is provided with two fixing grooves, the locking piece is located in the fixing grooves and fixed on the fixed plate, and the top surface of the locking piece is exposed out of the top surface of the fixed plate.

Further, the articulated elements cover is equipped with the limiting plate, the articulated elements with limiting plate clearance fit, the limiting plate is fixed the bottom surface of fixing base.

Furthermore, both ends of the sliding rod are fixedly connected with fixing pieces, and the fixing pieces are fixedly connected to the bottoms of the clamp seats through the fixing pieces.

The fixing piece is arranged to enable the height of the sliding rod to be adjustable, and therefore the close contact degree between the locking piece and the sliding rod, namely the locking performance, is adjusted.

The invention has the beneficial effects that:

the active clamping piece is locked by the close contact of the sliding rod and the locking piece, the relation between the sliding rod and the locking piece can be operated by the rotating piece and the hinge piece, so that the active clamping piece is rapidly moved to clamp the object tightly by the active clamping piece and the passive clamping piece, the operation is simple and convenient, the object can be better kept to be clamped stably, and the using effect is better.

Drawings

FIG. 1 is a perspective view of a pair of flat-nose pliers that can be quickly clamped and released;

FIG. 2 is a schematic cross-sectional view of a quick-release flat-nose pliers;

FIG. 3 is a partial perspective view of the movement mechanism;

FIG. 4 is a schematic partial sectional view of the caliper mount and the slide rod.

Detailed Description

The invention is explained in more detail below with reference to the figures and examples.

Fig. 1-4, the flat-nose pliers capable of being quickly clamped and loosened according to the present invention includes an active clamping member 1, a passive clamping member 2, a passive clamping seat 21, a pliers seat 3, and a moving mechanism, wherein the passive clamping seat 21 is fixed at one end of the pliers seat 3, the passive clamping member 2 is fixed at the passive clamping seat 21, and the active clamping member 1 and the passive clamping member 2 are both plate-shaped structures and are parallel to each other. The active clamping member 1 and the passive clamping member 2 are used for clamping an object to be clamped, and the clamping surfaces of the active clamping member 1 and the passive clamping member 2 can be provided with anti-slip structures, such as staggered strip structures.

The caliper seat 3 is provided with a through groove 30 perpendicular to the passive clamping piece 2 and the active clamping piece 1, and the through groove 30 is mainly used for sliding of the moving mechanism. Slide bars 31 are arranged on two sides of the bottom of the through groove 30 of the caliper seat 3. In order to protect the sliding rod 31, two grooves matched with the sliding grooves can be arranged at the bottom of the clamp seat 3, and the sliding grooves are arranged in the grooves and exposed out of the lower part.

The moving mechanism, which is a mechanism for carrying the active clamp 1, needs to have a function of sliding in the through slot 30, and the structure thereof includes a rotating member 41, a hinge member 42, two locking members 43, a fixed seat 44, a housing 45, a rear cover 46, a fixed plate 47, a rotating rod 48, and a handle 49. A rotating member 41, a hinge member 42, a locking member 43 and a rotating lever 48, which are main actuating moving mechanisms, are in a locked state or an unlocked state, the handle 49 is mounted at one end of the rotating lever 48, the bottom of the rotating member 41 is hinged to the top of the hinge member 42 and the rotating plane is perpendicular to the sliding rods 31, the upper portion of the hinge member 42 is located at the through slot 30, the two locking members 43 are linked with the hinge member 42, which is located at both sides of the bottom of the caliper housing 3, in a normal state, the two locking members 43 are respectively in close contact with the two sliding rods 31, that is, the moving mechanism is in a locked state, the rotating lever 48 is connected to the rotating member 41, when the user rotates the handle 49 to rotate the rotating lever 48, the rotating member 41 rotates, the hinge member 42 hinged thereto moves up and down and has a certain displacement in the horizontal direction, and the two locking members 43 are separated from the two sliding rods 31, that is, the moving mechanism is in a released state, the user can hold the handle 49 with hand to push the moving mechanism to move the active clamp 1 toward the passive clamp 2, and then rotate the handle 49 after clamping the object to make the two locking pieces 43 closely contact with the two slide bars 31.

The fixing seat 44, which is a component for assembling the rotating member 41, is a main structure of the moving mechanism, the fixing seat 44 is slidably assembled in the through groove 30, two sides of the bottom of the fixing seat are slidably fitted with two side walls of the through groove 30, the front part and the rear part of the fixing seat 44 are respectively provided with the positioning portions 441, the fixing seat 44 is located between the two positioning portions 441, a space for accommodating the rotating member 41 is provided, the two positioning portions 441 are in contact with two front and rear end surfaces of the rotating member 41, the two positioning portions 441 mainly serve to fix the front and rear positions of the rotating member 41 in the fixing seat 44, so as not to affect the rotation performance of the rotating member, the positioning portions 441 are not in close contact with the rotating member 41, and the space for accommodating the positioning members can allow the rotating member 41 to rotate without being restricted. Of course, the two positioning portions 441 have through holes for the rotation rod 48 to pass through, and one end of the rotation rod 48 is connected to the positioning portion 441 near the passive clamp 2, and the positioning portion 441 may be provided with a bearing for connecting the rotation rod 48. The upper part of the hinged part 42 is also positioned in the space for accommodating the positioning part in the fixed seat 44, and the left and right side surfaces of the hinged part 42 are in clearance fit with the fixed seat 44, the clearance only needs to meet the condition that the two locking parts 43 are separated from the two sliding rods 31 after the hinged part 42 rotates, the upper part of the hinged part 42 is necessary to be arranged in the fixed seat 44, on one hand, the protective effect on the hinged part 42 is achieved, on the other hand, the clearance fit between the hinged part 42 and the fixed seat 44 can also avoid the situation that the hinged part 42 rotates too much to influence the precision of the whole mechanism, because the rotation of the hinged part 42 can cause the position change of the linked part correspondingly, and the phenomenon that the position of each part generates small dislocation and the locking state is weakened or the loosening state is incomplete after the hinged part is used for a long time due to overlarge rotation amplitude.

The housing 45 and the rear cover 46 are the housing 45 of the moving mechanism, and protect the fixed base 44, the rotating member 41, and the like in the moving mechanism. The top surfaces of the caliper seat 3 at two sides of the through slot 30 are provided with slide ways 32 parallel to the through slot 30, the housing 45 is slidably assembled on the slide ways 32, the housing 45 is slidably fitted with the slide ways 32, and the housing 45 and the fixing seat 44 are slidably fitted in the through slot 30 to supplement each other, so that the stability of the movement of the moving mechanism on the caliper seat 3 can be further enhanced, the housing 45 is fastened outside the fixing seat 44, the front end and the rear end of the housing 45 are respectively fixed with the active clamping member 1 and the rear cover 46, in this embodiment, the fixed connection is realized by arranging a plurality of fastening screws, or other equivalent fixing modes can be adopted, the rear cover 46 has a through hole for allowing the rotating rod 48 to pass through, so as to provide a better protection effect for the rotating rod 48, and prevent the rotating rod 48 from being damaged or deformed to affect the operation of the rotating rod 48, therefore, a protruding section 461 is provided in the middle of the rear cover 46 along the axial direction of the rotating rod 48, a portion of the rotating rod 48 is located in the protruding section 461, and the rotating rod 48 exposed from the protruding section 461 is the portion connected with the handle 49.

A fixing plate 47 as a part of the hinge 42 cooperating with the two locking members 43 is fixed to the bottom of the hinge 42, the bottom of the hinge 42 is provided with two fastening screws fixed to the fixing plate 47, and the two locking members 43 are fixed to the fixed plate 47, the fixed plate 47 is located below the two slide rods 31, the fixing plate 47 is provided with two fixing grooves, the locking piece 43 is positioned in the fixing grooves and fixed to the fixing plate 47, the locking piece 43 may be fixed in the fixing groove by a fastening screw, a top surface of the locking piece 43 is exposed to a top surface of the fixing plate 47, the hinge 42 is sleeved with a limit plate 442, the hinge 42 is in clearance fit with the limit plate 442, the limit plate 442 is fixed on the bottom surface of the fixed seat 44, in this embodiment, the retainer plates 442 are fixed to the front and rear portions of the bottom surface of the fixing base 44 by two fastening screws. Obviously, the hinge member 42 is in clearance fit with the stopper plate 442, which is the same as the clearance fit between the hinge member 42 and the fixing seat 44, and also has a limited rotation range while giving a space for the rotation of the hinge member 42.

The locking piece 43 is used as an actuating part for locking the moving mechanism and the slide rod 31 with each other, the top surface of the locking piece 43 is in close contact with the slide rod 31 and is an arc surface matched with the shape of the slide rod 31, the part of the slide rod 31 in contact with the top surface of the locking piece 43 has a central angle of a cross section arc of 90 degrees and can be arranged between 50 degrees and 100 degrees, the top surface of the locking piece 43 is provided with anti-slip strips 431 which are equally spaced and perpendicular to the axial direction of the slide rod 31, and the arrangement of the anti-slip strips 431 obviously increases the friction force generated when the top surface of the locking piece 43 is in close contact with the slide rod 31, so that the position stability of the moving mechanism is enhanced, namely the clamping of the active clamping piece 1 and the passive clamping piece 2 to the object is firmer.

In this embodiment, the two ends of the sliding rod 31 are fixedly connected with fixing pieces 311, the fixing pieces 311 are fixedly connected to the bottom of the caliper seat 3 through fastening pieces 312, the fastening pieces 312 are fastening screws, and the height of the sliding rod 31 can be adjusted according to the screwing degree of the fastening pieces, so as to adjust the tight contact degree between the sliding rod 31 and the locking piece 43, and the adjustment can be performed adaptively according to the strength of the object to be clamped.

The embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A flat tongs capable of being clamped and loosened quickly comprises an active clamping piece, a passive clamping piece and a tongs base, wherein the passive clamping piece is fixed on the tongs base; moving mechanism still includes the fixing base, the fixing base sliding assembly is in lead to the groove, articulated elements upper portion is located the fixing base holds in the space of rotating the piece, and side and fixing base clearance fit about the articulated elements, the bottom of articulated elements is fixed with the fixed plate, two the locking piece is fixed the fixed plate, the articulated elements cover is equipped with the limiting plate, the articulated elements with limiting plate clearance fit, the limiting plate is fixed the bottom surface of fixing base.

2. The flat-nose pliers capable of being quickly clamped and loosened according to claim 1, wherein the moving mechanism further comprises a housing and a rear cover, the top surfaces of the pliers seats on the two sides of the through groove are provided with slideways parallel to the through groove, the housing is slidably assembled on the slideways and buckled outside the fixed seat, the front end and the rear end of the housing are respectively used for fixing the active clamping piece and the rear cover, and the rear cover is provided with a through hole for the rotating rod to pass through.

3. The quick clamping release flat-nose pliers according to claim 1, wherein the top surface of said locking member is in close contact with said slide bar and is an arc surface matching the shape of said slide bar, and the portion of said slide bar in contact with the top surface of said locking member has a central angle of a cross-sectional arc of 50 ° to 100 °.

4. The quick clamping release flat-nose pliers according to claim 3, wherein the top surface of the locking piece has anti-slip strips which are equally spaced and perpendicular to the axial direction of the slide rod.

5. The quick clamp-release flat-nose pliers according to claim 3, wherein said fixed plate is located below two of said slide bars, said fixed plate is provided with two fixing grooves, said locking member is located in said fixing grooves and fixed to said fixed plate, and a top surface of said locking member is exposed from a top surface of said fixed plate.

6. The flat-nose pliers capable of being quickly clamped and loosened according to claim 1, wherein fixing pieces are fixedly connected to both ends of the sliding rod, and the fixing pieces are fixedly connected to the bottom of the pliers seat through the fixing pieces.