CN215240535U

CN215240535U - Handheld screwdriver power increasing tool

Info

Publication number: CN215240535U
Application number: CN202120498037.7U
Authority: CN
Inventors: 董诚傲; 邱冬梅; 孙文浩; 赵海霞; 项波; 米华奇
Original assignee: China Second Metallurgy Group Co Ltd
Current assignee: China Second Metallurgy Group Co Ltd
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-12-21
Anticipated expiration: 2031-03-09

Abstract

The utility model relates to a force increasing tool of a hand-held screwdriver, which comprises a sleeve, a plurality of movable clamping pieces, a plurality of fixed clamping pieces corresponding to the number of the movable clamping pieces and a twisting handle; the first end of each movable clamping piece is rotatably connected to a connecting rod arranged on the inner wall of the sleeve, the second end of each movable clamping piece is positioned on the clockwise side of the corresponding connecting rod, and one side of each movable clamping piece facing the axis of the sleeve is provided with clamping teeth; the fixed clamping pieces are fixedly arranged in the sleeve, each fixed clamping piece is positioned on the clockwise side of the corresponding movable clamping piece, a notch is formed in one side, close to the corresponding movable clamping piece, of the inner arc surface of each fixed clamping piece, and the second end of each movable clamping piece abuts against the notch; the screwing handle is fixedly connected to the sleeve. The tool is simple in structure, convenient to carry and use, capable of enabling the screwdriver to be efficient and labor-saving in the construction process, and capable of improving the construction efficiency.

Description

Handheld screwdriver power increasing tool

Technical Field

The utility model relates to a hand tool technical field, more specifically relates to a handheld screwdriver increases power instrument.

Background

In daily life and engineering construction, a screwdriver is often used to screw a screw to fasten various parts or fixed equipment. At present, the screwing screw is generally screwed manually by adopting a manual hand-held screwdriver, and the mounting and construction operation is carried out by adopting an electric or pneumatic screwdriver. The manual and electric/pneumatic screwdrivers have the following disadvantages: the manual operation has low construction efficiency, easily causes hand abrasion, has obvious force application discomfort when being twisted and is inconvenient to use; the electric or pneumatic screwdriver is high in use cost, needs to be supplied with power or air source, needs to be connected through a circuit or an air path, is difficult to control the starting and stopping of machinery, and is inconvenient to carry.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a simple structure, carry and convenient to use's handheld screwdriver increases power instrument to solve the problem that exists among the prior art.

According to the utility model, a force increasing tool of a handheld screwdriver is provided, which comprises a sleeve, a plurality of movable clamping pieces, a plurality of fixed clamping pieces corresponding to the number of the movable clamping pieces, and a twisting handle;

the sleeve is of a hollow cylindrical structure with openings at the upper end and the lower end;

a plurality of connecting rods corresponding to the number of the movable clamping pieces are uniformly and fixedly arranged on the inner wall of the sleeve along the circumferential direction of the sleeve, the first end of each movable clamping piece is respectively and rotatably connected to the corresponding connecting rod, the second end of each movable clamping piece is respectively positioned on the clockwise side of the corresponding connecting rod, and one side of each movable clamping piece, facing the axis of the sleeve, is provided with clamping teeth;

the fixed clamping pieces are of arc-shaped block structures, a plurality of fixed clamping pieces are fixedly arranged in the sleeve, each fixed clamping piece is positioned on the clockwise side of the corresponding movable clamping piece, a notch is formed in one side, close to the corresponding movable clamping piece, of the inner arc surface of each fixed clamping piece, and the second end of each movable clamping piece abuts against the notch;

the screwing handle is fixedly connected to the sleeve.

Preferably, a top cover is fixedly arranged at an opening at the upper end of the sleeve, and the movable clamping piece and the fixed clamping piece are both arranged at one end, close to the top cover, in the sleeve.

Preferably, the twisting handle is of a T-shaped structure and comprises a fixing rod and a force increasing rod, a first end of the fixing rod is vertically and fixedly connected with the middle of the force increasing rod, and a second end of the fixing rod is vertically and fixedly connected with the center of the top cover.

Preferably, the force increasing rod is coated with a sheath.

Preferably, the connecting device further comprises a connecting base arranged in the sleeve, the connecting base is of a circular ring plate-shaped structure, and the fixing clamp is fixedly connected to the connecting base.

Preferably, the fixing clamping piece is provided with at least two bolt through holes, and the fixing clamping piece is fixedly connected to the connecting base through bolts.

Preferably, the diameter of a circle formed by the inner arc surfaces of the plurality of fixing clips is larger than or equal to the inner diameter of the connecting base.

Preferably, the movable clamping piece comprises a circular surface at the first end of the movable clamping piece, and a first circular arc surface and a second circular arc surface which are respectively tangent to the circular surface, the radius of the first circular arc surface is equal to that of the inner circular arc surface of the fixed clamping piece, the radius of the second circular arc surface is smaller than that of the first circular arc surface, the first circular arc surface and the second circular arc surface are intersected to form the second end of the movable clamping piece, and the clamping tooth is arranged on the first circular arc surface.

Preferably, the circular face of the movable clip is tangent to a circle formed by the inner arc faces of the plurality of fixed clips.

Preferably, the clamping tooth is a sawtooth-shaped tooth, and the tooth tip of the clamping tooth faces the second end of the movable clamping piece.

The utility model provides a hand-held type screwdriver increases power instrument, a structure is simple, carry and convenient to use, when using the screwdriver to twist the screw, establish this sleeve cover that increases power instrument in the screwdriver handle, and make the handle joint of screwdriver in the accommodation space that fixed fastener and activity fastener enclose, when twisting the handle that makes it towards activity fastener second end orientation rotation with this power instrument of increasing of hand-rotating, activity fastener takes place to rotate with the friction of screwdriver handle, make the joint tooth on the activity fastener with the screwdriver handle chucking, follow this and increase power instrument and rotate together. Through this increase power instrument, it becomes high-efficient laborsaving to twist the screw through the screwdriver in making the engineering work progress, has improved the efficiency of construction to can effectively deal with the difficult problem of twisting of screw fastening.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.

Fig. 1 shows according to the utility model discloses hand-held type screwdriver increases power tool's front view.

Fig. 2 shows according to the utility model discloses hand-held type screwdriver increases power tool's top view.

Fig. 3 shows according to the utility model discloses a hand-held type screwdriver increases power instrument working principle diagram.

Fig. 4 shows according to the utility model discloses a portable screwdriver increases power instrument in movable fastener and connecting rod relation of being connected sketch map.

Fig. 5 shows according to the utility model discloses a structural schematic of fixed fastener in hand-held type screwdriver increases power instrument.

Fig. 6 shows according to the utility model discloses fixed fastener and activity fastener cooperation work schematic diagram in the hand-held type screwdriver increases power instrument.

In the figure: sleeve 1, top cap 11, connection base 12, activity fastener 2, circular surface 21, first arc surface 22, second arc surface 23, joint tooth 24, fixed fastener 3, interior arc surface 31, outer arc surface 32, breach 33, bolt through-hole 34, twist and move handle 4, dead lever 41, increase power pole 42, sheath 43, connecting rod 5.

Detailed Description

Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.

Referring to fig. 1 and 2, the utility model provides a handheld screwdriver increases power instrument, including sleeve 1, a plurality of activity fastener 2, with a plurality of fixed fasteners 3 that 2 quantity of activity fastener correspond and twist and move handle 4. Sleeve 1 is upper and lower both ends open-ended cavity cylindric structure, has evenly set firmly a plurality of connecting rods 5 that correspond with activity fastener 2 quantity along its circumference on sleeve 1's the inner wall, and the first end of each activity fastener 2 rotates respectively to be connected on the connecting rod 5 that corresponds, and the second end of each activity fastener 2 is located the clockwise side of the connecting rod 5 that corresponds respectively, activity fastener 2 is equipped with joint tooth 24 towards one side of sleeve 1 axis. The fixed clamping pieces 3 are arc-shaped block structures, the fixed clamping pieces 3 are fixedly arranged in the sleeve 1, each fixed clamping piece 3 is respectively positioned on the clockwise side of the corresponding movable clamping piece 2, a notch 33 is formed in one side, close to the corresponding movable clamping piece 2, of the inner arc surface 31 of each fixed clamping piece 3, and the second end of each movable clamping piece 2 abuts against the notch 33. The screwing handle 4 is fixedly connected to the sleeve 1.

When using the screwdriver to revolve wrong screw, establish 1 cover of sleeve that will increase power instrument on the handle of screwdriver to make the handle joint of screwdriver in the accommodation space that fixed fastener 3 and movable fastener 2 enclose, with rotatory this twisting handle 4 that increases power instrument of hand make its towards the rotation of 2 second end directions of movable fastener, movable fastener 2 takes place to rotate with the friction of screwdriver handle, make the joint tooth 24 on the movable fastener 2 with the screwdriver handle chucking, the screwdriver follows this and increases power instrument and rotates together. The fixed clamping piece 3 is used for limiting the movable clamping piece 2 and preventing the movable clamping piece 2 from rotating reversely. The screwing handle increases the acting force arm when screwing the screw, so that the screw can be screwed more laborsavingly, and the screwing of the screw becomes efficient and laborsaving.

Furthermore, a top cover 11 is fixedly arranged at an opening at the upper end of the sleeve 1, and the movable clamping piece 2 and the fixed clamping piece 3 are both arranged at one end of the sleeve 1 close to the top cover 11. Twist and move handle 4 and be T type structure, including dead lever 41 and power increasing rod, the perpendicular fixed connection in middle part of the first end of dead lever 41 and power increasing rod 42, the perpendicular fixed connection in top cap 11 of second end of dead lever 41. The fixing rod 41 and the force increasing rod 42 of the handle 4 can be formed by welding round steel materials, and the fixing rod 41 is connected with the top cover 11 in a welding mode. In this embodiment, the top cover 11 is welded and fixed at the opening of the upper end of the sleeve 1, and has good connection strength. In other alternative embodiments, can set up the bolt hole respectively at sleeve 1's upper end opening and lower extreme opening part, the detachable connection of top cap 11 accessible bolted connection's mode is on sleeve 1, when top cap 11 bolted connection is at sleeve 1's upper end opening part under the normal condition, can clockwise rotate the screw of screwing up, when meetting when the screw of unscrewing is hard, need use this increase power instrument to carry out the screw of unscrewing, with top cap 11 bolted connection at sleeve 1's lower extreme opening part, the screw of unscrewing can be rotated to the anticlockwise, increase this increase power instrument's application range. In this embodiment, twist and still have the sheath 43 on the power increasing pole 42 of handle 4, sheath 43 can adopt rubber materials or plastics to make, increases the frictional force when handing power increasing pole 42, prevents that the hand from skidding.

Further, this hand-held type screwdriver increases power instrument still includes the connection base 12 of locating in sleeve 1, connects base 12 and is the annular plate-shaped structure of circle, and fixed fastener 3 fixed connection is on connecting base 12. Connecting base 12 can adopt the steel sheet cutting of certain thickness to form, and connecting base 12's external diameter and sleeve 1's internal diameter phase-match connect base 12 accessible welding mode fixed connection at sleeve 1's middle part, then will fix fastener 3 fixed connection on connecting base 12. As shown in fig. 5, which is a schematic structural diagram of the fixing clip member 3 in this embodiment, the outer arc surface 32 of the fixing clip member 3 matches with the inner diameter of the sleeve 1, at least two bolt through holes 34 are provided on the fixing clip member 3, the opening direction of the bolt through holes 34 is along the thickness direction of the fixing clip member 3, and the fixing clip member 3 is fixedly connected to the connecting base 12 through bolts, so that the fixing clip member can be conveniently detached and installed. Wherein, the diameter of the circle formed by the inner arc surfaces 31 of the plurality of fixed clamping pieces 3 is larger than or equal to the inner diameter of the connecting base 12, so that the handle of the screwdriver can be smoothly inserted into the accommodating space enclosed by the plurality of fixed clamping pieces 3 and the movable clamping piece 2.

The movable clamping piece 2 comprises a circular surface 21 positioned at a first end of the movable clamping piece, and a first circular arc surface 22 and a second circular arc surface 23 which are respectively tangent to the circular surface 21, the radius of the first circular arc surface 22 is equal to that of an inner circular arc surface 31 of the fixed clamping piece 3, the radius of the second circular arc surface 23 is smaller than that of the first circular arc surface 22, the first circular arc surface 22 and the second circular arc surface 23 are intersected to form a second end of the movable clamping piece 2, and the clamping teeth 24 are arranged on the first circular arc surface 22. Wherein, the circular surface 21 of the movable clamping piece 2 is tangent with the circle formed by the inner arc surfaces 31 of the plurality of fixed clamping pieces 3. As shown in fig. 3, for the working principle diagram of the handheld screwdriver force-increasing tool provided by this embodiment, the diameter of the handle of the screwdriver is equal to the diameter of the circle formed by the inner arc surfaces 31 of the plurality of fixed clamping pieces 3, or the diameter of the handle of the screwdriver is slightly smaller than the diameter of the circle formed by the inner arc surfaces 31 of the plurality of fixed clamping pieces 3, after the handle of the screwdriver is inserted into the sleeve 1, the handle of the screwdriver is in contact with the circular surface 21 and the first arc surface 22 of the movable clamping piece 2, when the sleeve 1 is rotated clockwise, the movable clamping piece 2 is rotated instantaneously under the contact friction effect of the handle of the screwdriver, so that the clamping teeth 24 on the first arc surface 22 of the movable clamping piece 2 are tightly pressed on the handle of the screwdriver, and thus the plurality of movable clamping pieces 2 firmly clamp the handle of the screwdriver and rotate synchronously with the rotation of the sleeve 1, thereby saving power to screw. Wherein, the clamping tooth 24 on the movable clamping piece 2 is a sawtooth-shaped tooth, and the tooth tip of the clamping tooth 24 faces the second end of the movable clamping piece 2, so that the sliding between the screwdriver handle and the movable clamping piece 2 can be better prevented.

The movable clamping piece 2 can be rotatably connected to the connecting rod 5 through a pin shaft, and in order to enable the movable clamping piece 2 to be stably rotated after being connected with the connecting rod 5, one end, far away from the inner wall of the sleeve 1, of the connecting rod 5 is rotatably connected to the middle of the first end of the movable clamping piece 2. In this embodiment, each movable clamping piece 2 is provided as two units of movable clamping pieces 2 with the same structure, and the two units of movable clamping pieces 2 are arranged on two sides of the connecting rod 5 in an up-down symmetrical manner.

The utility model provides a hand-held type screwdriver increases power instrument, its simple structure carries and convenient to use. Through this increase power instrument, it becomes high-efficient laborsaving to twist the screw through the screwdriver in making the engineering work progress, has improved the efficiency of construction to can effectively deal with the difficult problem of twisting of screw fastening.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.

Claims

1. A hand-held screwdriver boosting tool is characterized by comprising a sleeve, a plurality of movable clamping pieces, a plurality of fixed clamping pieces corresponding to the number of the movable clamping pieces, and a twisting handle;

the screwing handle is fixedly connected to the sleeve.

2. The power tool as claimed in claim 1, wherein a top cover is fixed to an opening at the upper end of the sleeve, and the movable and fixed clamps are disposed at an end of the sleeve close to the top cover.

3. The power tool of claim 2, wherein the handle is a T-shaped structure and comprises a fixing rod and a power rod, a first end of the fixing rod is vertically and fixedly connected to a middle portion of the power rod, and a second end of the fixing rod is vertically and fixedly connected to a center of the top cover.

4. The hand-held screwdriver power tool of claim 3, wherein said power rod is covered with a sheath.

5. The hand-held screwdriver power tool of claim 1, further comprising a connecting base disposed within said sleeve, said connecting base having a circular plate-like configuration, said fixing clip being fixedly attached to said connecting base.

6. The power tool as claimed in claim 5, wherein the fixing clip has at least two bolt holes, and the fixing clip is fixedly connected to the connecting base by bolts.

7. The hand-held screwdriver power tool of claim 5, wherein the diameter of the circle formed by the inner arc surfaces of the plurality of fixing clips is greater than or equal to the inner diameter of the connecting base.

8. The hand-held screwdriver power tool of claim 1, wherein the movable latch comprises a circular surface at a first end thereof, and a first circular arc surface and a second circular arc surface tangent to the circular surface, respectively, the first circular arc surface having a radius equal to a radius of the inner circular arc surface of the fixed latch, the second circular arc surface having a radius smaller than the radius of the first circular arc surface, the first circular arc surface and the second circular arc surface intersecting to form a second end of the movable latch, and the latch tooth opening on the first circular arc surface.

9. The hand-held screwdriver power tool of claim 8, wherein the circular face of said movable jaw is tangent to a circle formed by the inner arcuate surfaces of a plurality of said fixed jaws.

10. The hand-held screwdriver power tool of claim 8, wherein said engagement teeth are saw-tooth shaped teeth, the tip of said engagement teeth facing said second end of said movable catch.