CN216803077U

CN216803077U - Manual F clamp

Info

Publication number: CN216803077U
Application number: CN202120481813.2U
Authority: CN
Inventors: 刘少江; 闵航
Original assignee: Saame Tools Shanghai Import & Export Co ltd
Current assignee: Saame Tools Shanghai Import & Export Co ltd
Priority date: 2021-03-06
Filing date: 2021-03-06
Publication date: 2022-06-24
Anticipated expiration: 2031-03-06

Abstract

The utility model discloses a manual F clamp, which comprises a sliding rod, a fixed clamp body, a movable clamp head, a floating clamp plate and a handle, wherein one end of the handle close to the floating clamp plate is provided with a cam part, the handle is operated to enable the cam part to extrude the floating clamp plate towards a clamping direction to realize clamping or enable the cam part to release extrusion towards the clamping direction to realize loosening of the floating clamp plate, the floating clamp plate comprises a first clamp plate and a second clamp plate which are symmetrically arranged, the first clamp plate and the second clamp plate are respectively provided with a limiting structure, the limiting structure forms a limiting area, a positioning part is arranged on the handle, and when the handle is operated, the movement of the positioning part is limited in the limiting area. Resulting in failure of the floating clamp plate after rotation.

Description

Manual F clamp

Technical Field

The utility model relates to the field of clamps, in particular to a manual F-shaped clamp.

Background

The F-shaped clamp is a common manual clamp and comprises a sliding rod, a fixed clamp body and a movable clamp body, wherein the fixed clamp body is fixed at one end of the sliding rod, the movable clamp body is sleeved on the sliding rod in a sliding mode, the fixed clamp body and the movable clamp body extend to the same side of the sliding rod, so that the whole F-shaped clamp is in a shape of a letter F, the F-shaped clamp is called as an F-shaped clamp, the F-shaped clamp comprises a floating clamp plate, after a handle is operated for many times to clamp and loosen, the floating clamp plate can exceed a normal movable range under the driving of the handle, the floating clamp plate is caused to lose efficacy after rotating, and the use of the F-shaped clamp is influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above technical problems, an embodiment of the present invention provides a manual F clamp, which has a long service life and a simple structure.

The embodiment of the utility model provides a manual F clamp, which comprises a sliding rod, a fixed clamp body fixedly connected with one end of the sliding rod, a movable chuck movably connected to the slide rod, a floating clamping plate movably connected to the movable chuck, a handle rotatably connected to the floating clamp plate, a cam portion is arranged at one end of the handle close to the floating clamp plate, the handle is operated to enable the cam portion to press the floating clamp plate towards a clamping direction to realize clamping or enable the cam portion to release the pressing towards the clamping direction to realize loosening of the floating clamp plate, the floating clamping plates comprise a first clamping plate and a second clamping plate which are symmetrically arranged, the first clamping plate and the second clamping plate are respectively provided with a limiting structure, the limiting structure forms a limiting area, a positioning piece is arranged on the handle, and when the handle is operated, the movement of the positioning piece is limited in the limiting area.

Optionally, the limiting structure is a groove-shaped structure, and the positioning piece protrudes into the groove-shaped structure.

Optionally, the limiting structure is a through groove structure, and the positioning element protrudes into the through groove structure.

Optionally, the positioning element is a convex column, and a top surface of the convex column exceeds an outer side surface of the through groove structure.

Optionally, the limiting structure is a half-moon-shaped sliding groove.

Optionally, the half-moon shaped runner extends in the direction of movement of the floating clamp plate.

Optionally, first chutes are symmetrically arranged on the first clamping plate and the second clamping plate, pins are arranged on the movable clamping heads, and the first chutes are respectively sleeved on the pins.

Optionally, the first sliding groove extends along the moving direction of the floating clamp plate, and the first sliding groove is juxtaposed to the half-moon-shaped sliding groove.

Optionally, the first chute is a rectangular chute, a corner of the rectangular chute is provided with a chamfer, and the rectangular chute extends along the moving direction of the movable clamping plate.

Optionally, the half-moon-shaped sliding groove comprises a first arc and a second arc, the first arc is opposite to the rectangular sliding groove, and the arc length of the first arc is smaller than that of the second arc.

Optionally, the handle includes a handle body, one end of the handle body is formed with a first side plate and a second side plate which are parallel, and the movable chuck is rotatably connected between the two side plates through a pin.

Optionally, the first side plate and the second side plate are respectively provided with a cam portion, and the cam portion is provided with a first positioning piece.

Optionally, the first side plate, the second side plate and the handle body are integrally formed.

Optionally, the handle is connected to the movable chuck by a pin.

Optionally, the top side of the first side plate is made of a first material, the top side of the second side plate is made of a second material, and the first material is different from the second material.

According to the technical scheme provided by the embodiment of the utility model, the floating clamp plate comprises a first clamp plate and a second clamp plate which are symmetrically arranged, the first clamp plate and the second clamp plate are respectively provided with a half-moon-shaped sliding groove, the handle is provided with a positioning piece, and the half-moon-shaped sliding grooves are respectively sleeved on the positioning pieces.

Drawings

FIG. 1 is a schematic view of a manual F clamp according to the present invention in an assembled state;

FIG. 2 is a schematic structural diagram of one embodiment of a manual F-clamp of the present invention;

FIG. 3 is a top view of FIG. 2 in accordance with the present invention;

fig. 4 is an exploded view of a manual F-clamp of the present invention.

Detailed Description

All other embodiments obtained on the premise of creative work on the technical scheme in the embodiment of the utility model will belong to the protection scope of the utility model by combining the attached drawings in the embodiment of the utility model.

Referring to fig. 1-4, an embodiment of a manual F clamp according to the present invention includes a sliding rod 10, a fixed clamp 20 fixedly connected to one end of the sliding rod 10, a movable clamp 30 movably connected to the sliding rod 10, a floating clamp 40 movably connected to the movable clamp 30, a handle 50 rotatably connected to the floating clamp 40, a cam portion 51 disposed at one end of the handle 50 close to the floating clamp 40, the handle 50 being operated to enable the cam portion 51 to press the floating clamp 40 to clamp or enable the cam portion 51 to separate from the floating clamp 40 to release, the floating clamp 40 including a first clamp 41 and a second clamp 42 symmetrically disposed, the first clamp 41 and the second clamp 42 being respectively provided with a half-moon shaped sliding slot 411, two opposite sides of the handle 50 being provided with positioning parts 511, the half-moon-shaped sliding grooves 411 are respectively sleeved on the corresponding positioning pieces 511.

The sliding chuck 30 of the utility model is sleeved on the sliding rod 10 in a sliding way, the fixed chuck body 20 and the movable chuck 30 extend towards the same side of the sliding rod 10, so that the whole manual clamp is in the shape of letter 'F', the movable chuck 30 is provided with the ratchet wheel 31, the handle 50 is provided with the pawl 53 and the elastic element, the pawl 53 is matched with the ratchet wheel 31, the pawl 53 is meshed with the ratchet wheel 31 through the elasticity of the elastic element to position the handle 50 and keep the clamping state, the pawl 53 is provided with the releasing piece 54, and the releasing piece 54 is operated to overcome the elasticity of the elastic element to enable the pawl 53 to be disengaged from the ratchet wheel 31, namely the handle 50 can be operated reversely to release the clamped object.

In one embodiment of the present invention, the elastic element is preferably a spring, but the elastic element is not limited to a spring, and may be a spring plate or other element capable of providing elastic force.

Above-mentioned manual F anchor clamps, be provided with setting element 511 on the handle 50, half moon spout 411 on the splint 40 that floats is established respectively on the setting element 511, half moon spout 411 can guide handle 50 when handle 50 acts on the one hand, make handle 50 can remove in the within range of regulation, on the other hand guide splint 40 that floats, prevent that the splint 40 that floats from driving in the tight direction of orientation clamp of handle 50, can take place the rotation, make the splint 40 that floats can surpass normal home range, lead to the handle 50 to realize the clamp of work piece under the condition that the splint 40 became invalid that floats, and cause to press from both sides tight the clamp or can't normally release and press from both sides tightly, influence the normal use of F anchor clamps.

Referring to fig. 4, the handle 50 includes a handle body 52, a first side plate 521 and a second side plate 522 parallel to each other are formed at one end of the handle body 52, the handle 50 is approximately U-shaped, the movable chuck 30 is rotatably connected between the first side plate 521 and the second side plate 522 by a pin 32 or other rotation connection means, a cam-shaped cam portion 51 is disposed at one end of the first side plate 521 and the second side plate 522 away from the handle body 52, that is, at one end of the first side plate 521 and the second side plate 522 close to the movable chuck 30, a positioning member 511 and a positioning hole 512 are disposed on the cam portion 51, preferably, the positioning member 511 is a protrusion, two half-moon-shaped sliding slots 411 are respectively sleeved on the protrusion of the first side plate 521 and the second side plate 522, a floating clamp plate 40 is sleeved on an upper end of the cam portion 51, the handle 50 is operated to press the floating clamp plate 40, the floating clamp plate 40 can slide in a direction towards the fixed clamp body 20 under the driving of the cam portion 51, clamping is effected or loosening is effected by moving the cam portion 51 away from the floating cleat. In order to simplify the structure and facilitate assembly, the handle 50 is connected to the movable chuck 30 through a pin, and the handle 50 comprises two

side plates

521 and 522 and a handle body 52, so that parts which need more durability and rigidity, namely, the top sides of the two

side plates

521 and 522 are made of different materials to be partially combined to ensure the strength of the handle, and the material cost and the overall durability are reduced. In one embodiment of the present invention, the first side plate 521, the second side plate 522 and the handle body 52 are integrally formed, and the portions of the top sides of the first side plate 521 and the second side plate 522, which are provided with the positioning holes 512 and the positioning pieces 511, are made of a metal material or other wear-resistant and corrosion-resistant materials with stronger strength, so as to enhance the strength of the cam portion 51.

In one embodiment of the present invention, the movable chuck 30 includes a movable chuck body, one end of the movable chuck is formed with a C-shaped chuck 33, a ratchet 31 is disposed on an arc structure of the C-shaped chuck 33, two ends of the ratchet 31 are fixed on the arc structure by a fixing element such as a rivet, a positioning hole is disposed in the middle of each side of the C-shaped chuck 33, a pin 32 is fixed on the positioning hole, the C-shaped chuck 33 is disposed between the first side plate 521 and the second side plate 522, the pin 32 passes through the positioning hole 512 on the first side plate 521 and the second side plate 522, two first sliding slots 412 are symmetrically disposed on the first clamping plate 41 and the second clamping plate 42, and the two first sliding slots 412 are respectively sleeved on the two pins 32. Specifically, a first sliding groove 412 is formed in the first clamping plate 41, a first sliding groove 412 is formed in the second clamping plate 42, the pin 32 penetrates through positioning holes 512 in the first side plate 521 and the second side plate 522 and can slide along the first sliding groove 412, if only one pair of sliding grooves are formed in the floating clamping plate 40, when the clamping plate is clamped, the floating clamping plate 40 is prone to tilting, and the floating clamping plate 40 fails after rotating, therefore, a pair of half-moon-shaped sliding grooves 411 are further formed in the floating clamping plate 40, the direction of the half-moon-shaped sliding grooves 411 is basically the same as that of the first sliding groove 412, when the floating clamping plate 40 slides, due to the limitation of the half-moon-shaped sliding grooves 411, the half-moon-shaped sliding grooves 411 can guide the handle 50 and the floating clamping plate 40, and it is ensured that the floating clamping plate 40 cannot rotate beyond the normal moving range under the driving of the handle 50.

In one embodiment of the present invention, the first sliding groove 412 is a rectangular sliding groove, and two corners of the rectangular sliding groove are provided with chamfers, and the sliding groove extends along the moving direction of the floating clamp plate 40.

Referring to fig. 2, the half-moon shaped slot 411 extends along the direction of movement of the floating clamp plate 40 (i.e., has a slidable component along the clamping direction of the floating clamp plate 40). The floating clamp plate 40 comprises a first clamp plate 41 and a second clamp plate 42 which are symmetrically arranged, a bottom plate is arranged between the first clamp plate 41 and the second clamp plate 42, a half-moon-shaped sliding groove 411 comprises a first circular arc 414 and a second circular arc 413, the first circular arc 414 is opposite to a rectangular sliding groove, the arc length of the first circular arc 414 is smaller than that of the second circular arc 413, a first round angle and a second round angle are formed between the first circular arc 414 and the second circular arc 413, the first round angle is close to the bottom plate, the second round angle deviates from the bottom plate, and the angle of the first round angle is smaller than that of the second round angle. An arc-shaped sliding path is formed between the first arc 414 and the second arc 413 to guide the positioning member 511 to slide along an arc-shaped track, the moving track of the positioning member 511 is synchronous with the first sliding slot 412 in the clamping direction, and the moving track of the positioning member 511 simultaneously has a displacement in a transverse direction perpendicular to the clamping direction, wherein the displacement in the transverse direction is consistent with the displacement in the transverse direction of the positioning member 511 when the handle 50 is operated to rotate.

The fixed clamp 20 is fixedly assembled on the sliding rod 10 through a fixed pin or other type of positioning piece, and a reinforced pin is also assembled on the fixed clamp 20, and the reinforced pin is contacted on the sliding rod 10 to avoid deformation and damage of the fixed clamp when clamping an object.

Two positioning pins are arranged on the movable chuck 30, and the two positioning pins are contacted on the sliding rod 10 to fix the movable chuck 30 during clamping. In order to protect the clamped object from being damaged, the fixed clamp body 20 and the movable clamp head 30 are provided with a sheath or a cushion block (no reference numeral shown).

When the manual F-shaped clamp with the structure is used for clamping an object, the fixed clamp body 20 and the floating clamp plate 40 are closed to the object and contacted on the object by sliding the movable chuck 30, then a proper clamping position is kept, the handle 50 is pulled towards the direction of the slide rod 10, and the cam part 51 is made to extrude the floating clamp plate 40, so that one-time clamping can be realized. During the pulling of the handle 50, the pawl 53 slides over the ratchet wheel 31, the pawl 53 is positioned on the ratchet wheel 31 during the clamping, and the elastic element exerts an elastic force on the pawl 53 to prevent the pawl 53 from disengaging from the ratchet wheel 31 and prevent the handle 50 from acting in the reverse direction. To release (unclamp), the release member 54 is operated to disengage the pawl 53 from the ratchet 31 against the resilient force of the resilient member, and the handle 50 is pulled away from the slide bar 10 to release the cam portion 51 from the floating clamp plate 40, thereby releasing the clamped object and sliding the movable clamp 30 away from the clamped object.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A manual F clamp is characterized by comprising a sliding rod, a fixed clamp body fixedly connected with one end of the sliding rod, a movable chuck movably connected to the slide rod, a floating clamping plate movably connected to the movable chuck, a handle rotatably connected to the floating clamp plate, a cam portion is arranged at one end of the handle close to the floating clamp plate, the handle is operated to enable the cam portion to press the floating clamp plate towards a clamping direction to realize clamping or enable the cam portion to release the pressing towards the clamping direction to realize loosening of the floating clamp plate, the floating clamp plate comprises a first clamp plate and a second clamp plate which are symmetrically arranged, the first clamp plate and the second clamp plate are respectively provided with a limiting structure, the limiting structure forms a limiting area, a positioning piece is arranged on the handle, and when the handle is operated, the movement of the positioning piece is limited in the limiting area.

2. The manual F-clamp of claim 1, wherein the limiting structure is a groove-shaped structure, and the positioning member protrudes into the groove-shaped structure.

3. The manual F-clamp of claim 2, wherein the limiting structure is a through-slot structure, and the positioning member protrudes into the through-slot structure.

4. The manual F-clamp of claim 3, wherein the positioning member is a convex pillar, and a top surface of the convex pillar exceeds an outer side surface of the through groove structure.

5. The manual F clamp of claim 2, wherein the stop structure is a half moon shaped runner.

6. The manual F clamp of claim 5, wherein the half moon shaped chute extends in the direction of movement of the floating clamp plate.

7. The manual F clamp of claim 6, wherein the first clamping plate and the second clamping plate are symmetrically provided with first sliding grooves, the movable clamping head is provided with pins, and the first sliding grooves are respectively sleeved on the pins.

8. The manual F-clamp of claim 7, wherein said first runner extends in a direction of movement of said floating clamp plate, said first runner juxtaposed with said half-moon runner.

9. The manual F-clamp of claim 7, wherein the first runner is a rectangular runner, corners of the rectangular runner are provided with chamfers, and the rectangular runner extends in a direction in which the movable clamp plate moves.

10. The manual F clamp of claim 9, wherein said half-moon shaped chute includes a first arc and a second arc, said first arc facing said rectangular chute, said first arc having an arc length less than an arc length of said second arc.

11. The manual F clamp of claim 1, wherein the handle includes a handle body having first and second parallel side plates formed at one end thereof, the movable jaw being pivotally connected between the two side plates by a pin.

12. The manual F-clamp of claim 11, wherein the first and second side plates each have a cam portion thereon, the cam portions having a first detent disposed thereon.

13. The manual F clamp of claim 11, wherein the first side plate, second side plate, and the handle body are integrally formed.

14. The manual F clamp of claim 1, wherein the handle is connected to the movable jaw by a pin.

15. The manual F clamp of claim 11, wherein the top side of the first side plate is a first material and the top side of the second side plate is a second material, the first material being different from the second material.