Please select the most similar patent number from A, B, C and D. Which number is?
Disclosed are a pair of electric scissors, comprising: a handle (19), a rocker arm (27), a blade component (A) at the front part of the handle, as well as a control circuit board (26), a microswitch (21), a motor (18) and a pull rod component (B) inside the handle; the rear end of the blade component is rotationally arranged at the front part of the handle; the pull rod component is composed of a reciprocating lever (9) and a pull rod (7) rotationally connected with each other; when the blade component freely rotates relative to the handle, the pull rod can freely rotate relative to the reciprocating lever; that is, while the pull rod component guarantees an axial reciprocating motion and drives a mobile blade and a fixed blade of the blade component to complete scissoring by opening and closing, the pull rod component can rotate following the rotation of the blade component so that a cutter point direction of the electric scissors can be flexibly adjusted. The improved structure can be adaptive to scissors having a large cutter point or a small cutter point, and has the advantages of simple operation, effort saving in scissoring, and flexible rotating adjustment.
A: A knife sharpener having a movable knife sharpening opening, comprising: a knife sharpening frame (1) and knife sharpening components (2) that are tiltingly provided on the knife sharpening frame (1), further comprised are vertical rod assemblies (3) and a horizontal rotary shaft (4) which is fixed on the knife sharpening frame (1) and movably connected to the vertical rod assemblies (3); the vertical rod assemblies (3) can reciprocate left and right as the rotary shaft (4) rotates; the knife sharpening components (2) and the vertical rod assemblies (3) form a V-shaped knife sharpening opening; and when the vertical rod assemblies (3) reciprocate left and right, the lowermost end of the V-shaped knife sharpening opening ascends or descends along the length direction of the knife sharpening components (2). When vertical rods (31) move relative to the positions of the knife sharpening components (2), the lowermost end of a V-shaped knife sharpening opening formed between the vertical rods (31) and the knife sharpening components (2) ascends or descends. The knife sharpening components (2) can carry out knife sharpening at any position in the length direction, thus improving the utilization rate of the knife sharpening components (2). The knife sharpening components (2) are placed side by side without interlocking, do not affect one another, are easy to operate, avoid blade edge curling, and can sharpen a cutting tool having a single-sided blade.
B: A retractable automatic hair-releasing razor comb comprising a handle (1), and a comb head (2) connected to one end of the handle. An accommodating cavity (21) is provided within the comb head, a blade (3) is provided within the accommodating cavity, and one end of the blade is provided with comb teeth (31). An end of the comb head near the comb teeth is provided with an opening (22). The handle is provided with an installation cavity (11) therein. A pressing assembly is provided within the installation cavity to drive the end of the blade near the comb teeth to extend out of the opening. The pressing assembly comprises a connection member (4), a pressing member, and an elastic position restoration member. One end of the connection member is connected to the blade, and another end of the connection member is rotatably connected to an inner wall of the installation cavity. The pressing member is provided on the connection member. The handle is provided with a pressing hole (12) for the pressing member to extend out. Pressing down on the pressing member enables the connection member to drive the end of the blade having the comb teeth to extend out from the opening, and unlocking and releasing of the pressing member retracts the end of the blade having the comb teeth back into the accommodation cavity, such that the blade is not exposed and will not cause accidental injuries of users, thereby improving safety.
C: An electric clipper blade head parallel operation device (100), comprising a movable blade (11), a fixed blade (10), a blade support (12), a blade head support (13) and a pressure spring (14). One end of the fixed blade (10) is provided with first teeth (101). The blade head support (13) is arranged at the end of the fixed blade (10) away from the first teeth (101). One end of the movable blade (11) is provided with second teeth (111). The movable blade (11) is arranged on the end of the fixed blade (10) away from the blade head support (13). The second teeth (111) abut against the first teeth (101). The bottom of the blade support (12) is connected to a top surface of the movable blade (11). A sliding groove (121) is provided on the surface of the blade support (12) facing away from the movable blade (11). An oil storage groove (122) is further provided in the sliding groove (121). The pressure spring (14) comprises connecting parts (141), and a sliding part (142) having two ends respectively connected to the connecting parts (141). The connecting parts (141) are respectively connected to the blade support (13). The sliding part (142) is positioned on the sliding groove (121). The present device reduces abrasion, prolongs blade service life, has high structural stability, meets user requirements, and is simple in structure, low in cost and convenient to clean.
D: An electric pruner, comprising a machine body housing (28), a machine head main body provided at the front end of the machine body housing (28), and a power cord (29) provided at the back end of the machine body housing (28). A motor (1) is provided inside the machine body housing (28), the motor (1) is connected to a gearbox gear ring (3), the gearbox gear ring (3) is connected to a feed screw nut (19); the motor (1) is connected to a planetary gear (4) by means of a motor gear (2), the planetary gear (4) is fixed onto a planetary gear carrier (5), one end of the planetary gear carrier (5) is connected to a universal joint transmission block (6), a universal joint sleeve (17) is provided at the outer side of the universal joint transmission block (6); a first bearing (7) is fixed onto the planetary gear carrier (5), a first spherical bowl (9), a first ball head (10) and a second bearing (12) are respectively and sequentially fixed to a third bearing (13), a second ball head (14) and a second spherical bowl (15) which are provided on a lead screw (16); the lead screw (16) is fixed onto the machine head main body, the lead screw (16) is provided with a Hall plate (21) at the lower part of the fixing end of the machine head main body, a trigger (20) is provided at the bottom of the Hall plate (21), a magnet (18) is provided between the Hall plate (21) and the lead screw (16); the front end of the machine head main body is provided with a fixed cutter blade (24) and a movable cutter blade (25), the fixed cutter blade (24) is provided at the lower end of the movable cutter blade (25).
Answer: D