CN104309381A - Pencil sharpener structure - Google Patents

Abstract

The invention relates to a structure of a pencil sharpener, which comprises a pencil sharpener housing provided with a pen-feeding mechanism and a handle. And synchronously rotating planer holder, a planer holder with a blade is clamped on the planer holder, and a pen guide cone hole corresponding to the pen inlet hole is opened in the planer holder, and the blade on the planer holder is arranged in the guide cone hole of the pen holder. On the cone surface, the blade of the blade is parallel to the cone surface and embedded in the guide cone hole of the pen holder. The end of the planer holder near the pen inlet hole is a cylindrical structure and a ratchet is arranged inside. The inside of the ratchet is provided with a A threaded hole corresponding to the guide taper hole of the pen shaft, the diameter of the threaded hole is greater than the diameter of the pencil shaft. The invention replaces the traditional hob with a planer, thereby reducing the cost of the pencil sharpener and making it easier to replace the cutter.

Description

A pencil sharpener structure

technical field

The invention relates to a pencil sharpener structure.

Background technique

At present, most of the pencil sharpeners we use are hob-type pencil sharpeners, and the cutting tool is a hob. Although the cutting effect of the hob is better, its cost is high and it is not easy to replace.

Contents of the invention

The technical problem to be solved by the present invention is to provide a pencil sharpener structure with low cost, good cutting effect and easy tool replacement.

In order to solve the above problems, the technical solution adopted by the present invention is: a pencil sharpener structure, including a pencil sharpener housing provided with a pinch pen mechanism and a handle, the pinch mechanism is provided with a pen inlet hole, and the pencil sharpener A planer frame which is connected to the handle and rotates synchronously is arranged inside the pen machine housing. A planer seat with a blade is clamped on the planer frame. A pen guide taper hole corresponding to the pen inlet hole is opened in the planer seat. The planer The blade on the seat is set on the tapered surface of the guide cone hole of the pen holder. The blade of the blade is parallel to the cone surface and embedded in the guide cone hole of the pen holder. The end of the planer holder near the pen inlet hole is a cylindrical structure with a A ratchet, the structure of one end of the ratchet matches the interior of the cylindrical structure of the planer holder, and the other end is fixed at the pencil entrance inside the pencil sharpener housing by a clearance fit. The threaded hole corresponding to the guide taper hole, the diameter of the threaded hole is greater than the diameter of the pencil shaft; the outer ring of the pen inlet hole on the side of the pinching pen mechanism close to the planer holder is provided with several springs protruding towards the direction of the planer holder. Arms, the ends of the protruding ends of the elastic arms gather together and are respectively provided with external threads, and the elastic arms correspond to the threaded holes inside the ratchet and the thread shapes match.

Preferably, the pen pinch mechanism includes a pen clamp mechanism and a pen holder fixed thereto, and the pen holder is arranged on a side close to the planer holder.

Preferably, the elastic arm is arranged on the pen holder.

Preferably, several protruding hooks are provided on the circumferential surface of the other end of the ratchet, and correspondingly, a circular boss with a through hole is provided at the entrance of the inner pencil of the pencil sharpener housing. A circle of grooves is provided on the boss, and the hooks of the ratchet are engaged in the grooves of the boss to form a clearance fit.

Preferably, the planer holder is threadedly connected to the handle.

The beneficial effects of the present invention are: the present invention replaces the traditional hob with a planer, thereby reducing the cost of the pencil sharpener, and it is easier to replace the cutter, only need to directly replace the old planer seat with the new planer seat , energy saving and environmental protection, high usability, can be used for a long time, and has good chipping performance.

Description of drawings

Fig. 1 is the structural diagram of a kind of pencil sharpener structure of the present invention;

Fig. 2 is the cooperating structural diagram of ratchet and planer holder in Fig. 1;

Fig. 3 is a structural diagram of the pen holder in Fig. 1;

Fig. 4 is the matching structural diagram of the planer holder and the planer seat in Fig. 1;

Fig. 5 is the top structural view of Fig. 4;

Fig. 6 is a structural diagram during cutting of a pencil sharpener structure according to the present invention;

In the figure: 1. Pencil sharpener shell, 2. Pinching pen mechanism, 3. Handle, 4. Planer holder, 5. Planer seat, 6. Ratchet wheel, 7. Pencil, 11. Boss, 21. Pen hole , 22, pen clamping device, 23, pen holder, 51, blade, 52, pen holder guide taper hole, 61, threaded hole, 62, hook, 111, groove, 231, elastic arm.

Detailed ways

The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

As shown in Figure 1, described a kind of pencil sharpener structure, comprises the pencil sharpener housing 1 that is provided with pinch pen mechanism 2 and handle 3, is provided with pen inlet hole 21 on pinch pen mechanism 2, and described sharpener The pen machine housing 1 is provided with a planer holder 4 that is connected to the handle 3 and rotates synchronously. The handle 3 and the planer holder 4 of the present invention are threaded to facilitate assembly and disassembly. As shown in Figures 4 and 5, the planer A planer seat 5 with a blade 51 is clamped on the frame 4, and a penholder guide taper hole 52 corresponding to the pen entry hole 21 is provided in the planer seat 5, and the blade 51 on the planer seat 5 is arranged on the penholder guide taper hole. 52 on the tapered surface, the blade of the blade 51 is parallel to the tapered surface and embedded in the guide cone hole 52 of the pen holder, as shown in Figure 2, the end of the planer tool holder 4 near the pen entry hole 21 is a cylindrical structure and internally arranged There is a ratchet 6, the structure of one end of the ratchet 6 matches the inside of the cylindrical structure of the planer holder 4, and the other end is fixed at the pencil entrance inside the pencil sharpener housing 1 in a clearance fit manner, the ratchet 6 The interior of the pen is provided with a threaded hole 61 corresponding to the penholder guide taper hole 52, and the diameter of the threaded hole 61 is greater than the diameter of the pencil 7 penholder; The ring is provided with several elastic arms 231 protruding toward the planer frame 4. The ends of the extended ends of the elastic arms 231 are gathered together and are respectively provided with external threads. The elastic arms 231 correspond to the screw holes 61 inside the ratchet 6. correspond and match the thread shape.

The pinching pen mechanism 2 of the present invention includes a pen clamping mechanism 22 and a pen holder 23 fixed thereto. The pen holder 23 is arranged on a side close to the planer holder 4, as shown in FIG. 3 . The elastic arm 231 is arranged on the pen holder 23, so that when there is a problem with the elastic arm 231 and needs to be replaced, we only need to replace the pen holder 23 alone instead of replacing the entire pinch pen mechanism 2, which saves maintenance costs ;

A plurality of protruding hooks 62 are provided on the peripheral surface of the other end of the ratchet 6 of the present invention, and a circular protrusion with a through hole is provided at the entrance of the inner pencil of the pencil sharpener housing 1 corresponding to it. Platform 11, a groove 111 is provided on the boss 11, the hook 62 of the ratchet 6 is engaged in the groove 111 of the boss 11 to form a clearance fit, this fit and fixation method is beneficial to the assembly and disassembly of the ratchet 6 It is convenient to maintain it, and the clearance fit between the hook 62 and the groove 111 is to not affect the rotation of the ratchet 6 .

When in use, insert the pencil 7 into the pen hole 21 until the pencil sharpener housing 1, the pinch pen mechanism 2 clamps the pencil 7 and pulls it outward, and under the action of the spring of the pinch pen mechanism 2, the pencil 7 follows the clip. The pen feeding mechanism 2 is pulled inward, and the hand handle 3 turns clockwise, which drives the planer holder 4 and the planer seat 5 on the planer holder 4 to rotate in the same direction. At the beginning, the compression of the spring is relatively large, so the elastic force is relatively large. Therefore, the pinch pen mechanism 2 can be pulled inwards to complete the cutting in the front section. When the cutting reaches the back, the compression of the spring decreases, and the elastic force decreases accordingly so that there is not enough force to pull the pencil 7 inwards. Shake handle 3, as shown in Figure 6, since the pencil 7 in the pen hole 21 has already stretched the front end of elastic arm 231, so that the thread at the front end of elastic arm 231 matches the thread inside ratchet 6, the effect of thread fit Down, it becomes the movement of the lead screw, so that the entire pinch pen mechanism 2 continues to be pulled inward, and the cutting is finally completed; Disengaged, so that the pinch pen mechanism 2 can be pulled away again for the next round of cutting.

The present invention replaces the traditional hob with a planer, thereby reducing the cost of the pencil sharpener, and it is easier to replace the cutter, just replace the old planer holder with a new one, energy saving, environmental protection, and high usability , can be used for a long time, and has good chip performance.

Claims (5)

1. a penknife structure, comprise the penknife housing being provided with and pinching a mechanism and handle, pinch a mechanism and be provided with pen-laying hole, it is characterized in that: be provided with in described penknife housing and be interconnected and the planing frame of synchronous axial system with handle, planing frame is arranged with the adz block of a band blade, the penholder guiding taper hole corresponding with pen-laying hole is offered in adz block, blade on described adz block is arranged on the conical surface of penholder guiding taper hole, the blade of described blade is parallel with the conical surface and embed penholder and lead in taper hole, described planing frame is cylindrical structural near one end of pen-laying hole and inside is provided with a ratchet, described ratchet is the structure of one end and the fit inside of planing frame cylindrical structural wherein, the other end adopts the mode of matched in clearance to be fixed on the pencil porch of penknife enclosure interior, the inside of described ratchet offers the corresponding screwed hole of the taper hole that to lead with penholder, the diameter of screwed hole is greater than the diameter of pencil holder, the described outer ring pinching the pen-laying hole of close planing frame side in a mechanism is provided with several elastic arms stretched out to planing frame direction, the end of described elastic arm external part is mutually gathered and is respectively arranged with external screw thread, and described elastic arm and screw thread form corresponding with the screwed hole of ratchet inside matches.

2. a kind of penknife structure according to claim 1, is characterized in that: described in pinch that a mechanism comprises that a pencil holding mechanism and one fixes with it draw pen stand, described in draw pen stand to be arranged on side near planing frame.

3. a kind of penknife structure according to claim 2, is characterized in that: described elastic arm is arranged on and draws on pen stand.

4. a kind of penknife structure according to claim 1, it is characterized in that: the periphery of the described ratchet other end is provided with several snap fits stretched out, the porch corresponding the inside pencil of penknife housing is provided with the round boss that has through hole, boss offers a circle groove, the snap fit of described ratchet is fastened on the groove interior formation matched in clearance of boss.

5. a kind of penknife structure according to claim 1, is characterized in that: described planing frame and handle are for being threaded.