CN215970869U

CN215970869U - Hand-operated pencil sharpener

Info

Publication number: CN215970869U
Application number: CN202121566233.XU
Authority: CN
Inventors: 娄宗茂
Original assignee: Jinyi Stationery Co ltd
Current assignee: Jinyi Stationery Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2022-03-08
Anticipated expiration: 2031-07-09

Abstract

The utility model relates to the technical field of pencil sharpeners, and discloses a hand-operated pencil sharpener, which comprises: the device comprises a shell, a handle assembly and a mounting seat, wherein the shell is provided with the mounting seat and the handle assembly; the pencil feeding mechanism is arranged on the mounting seat and comprises a first clamping assembly, a second clamping assembly and a turntable, and a gap for a pencil to penetrate through is formed between the first clamping assembly and the second clamping assembly; the first clamping assembly and/or the second clamping assembly can slide relatively to adjust the size of the gap; the turntable is used for driving the first clamping assembly and/or the second clamping assembly; the knife rest is connected between the rotary disc and the handle assembly, the knife rest can drive the rotary disc, and the handle assembly can drive the knife rest. The hand-operated pencil sharpener has the advantages that the pencil sharpener is provided with the pencil feeding mechanism, is driven by the handle assembly, and is convenient to use as the pencil sharpener is rotated to cut a pencil and simultaneously drives the pencil to enter; and the pencil feeding mechanism can be suitable for pencils with different sizes.

Description

Hand-operated pencil sharpener

Technical Field

The utility model relates to the technical field of pencil sharpeners, in particular to a hand-operated pencil sharpener.

Background

The pencil sharpener is widely used in daily study and life as a pencil sharpening tool, and is classified into an electric type and a hand type. In most of the existing hand-operated pencil sharpeners, pencils are gradually fed by hands, the feeding speed is not well controlled, the using effect is poor, and a user needs to manually rotate a handle to sharpen the pencils and extend the pencils into a knife rest at the same time, so that the pencil sharpener is inconvenient to use; and the diameter range of the pencil which can be sharpened is limited, so that the application range of the hand-operated pencil sharpener is limited.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a hand-operated pencil sharpener which is provided with a pencil feeding mechanism and can adapt to pencils with different diameters.

The technical scheme adopted by the utility model for solving the technical problem is to provide a hand-operated pencil sharpener, which comprises the following components:

the device comprises a shell, a handle and a mounting base, wherein the shell is provided with a mounting base and a handle assembly;

the pencil feeding mechanism is arranged on the mounting seat and comprises a first clamping assembly, a second clamping assembly and a turntable, and a gap for a pencil to penetrate through is formed between the first clamping assembly and the second clamping assembly; the first clamping assembly and/or the second clamping assembly can slide relatively to adjust the size of the gap; the turntable is used for driving the first clamping assembly and/or the second clamping assembly;

the cutting knife comprises a knife rest and a cutting knife arranged on the knife rest, wherein the knife rest is connected between the rotary disc and a handle assembly, the knife rest can drive the rotary disc, and the handle assembly can drive the knife rest.

Further, the pen feeding mechanism comprises a base connected with the mounting base, a through hole is formed in the base, a flange is arranged on the rotary disc, a mounting groove is formed in the knife rest, and the flange penetrates through the through hole and is arranged in the mounting groove in a penetrating mode;

the handle assembly comprises a handle, and the handle is connected with the knife rest.

Furthermore, a first straight surface is arranged on the inner wall of the flange, a second straight surface is arranged on the groove wall of the mounting groove, and the first straight surface is abutted against the second straight surface;

the knife rest is kept away from the one end of mounting groove is equipped with first joint portion, be equipped with second joint portion on the handle, first joint portion with second joint portion joint.

Further, the first clamping assembly comprises a first gear shaft, and the second clamping assembly comprises a second gear shaft;

and one end of the turntable, which is far away from the flange, is provided with a plurality of driving teeth along the circumferential direction of the turntable, and the first gear shaft and/or the second gear shaft are in meshing transmission with the driving teeth.

Further, the gears on the first gear shaft and the second gear shaft are both helical gears.

Furthermore, one side of the base is provided with a first sliding chute, and the other side of the base is provided with a second sliding chute; one end of the first gear shaft is slidably disposed on the first sliding groove, and/or one end of the second gear shaft is slidably disposed on the second sliding groove.

Furthermore, a first limiting wheel is sleeved at one end, far away from the gear, of the first gear shaft, and a second limiting wheel is sleeved at one end, far away from the gear, of the second gear shaft; a first pin shaft is arranged at one end, close to the first clamping assembly, of the base, and a second pin shaft is arranged at one end, close to the second clamping assembly, of the base;

a first torsion spring is sleeved on the first pin shaft, a torsion arm of the first torsion spring abuts against the first limiting wheel, and the other torsion arm of the first torsion spring abuts against the base; a second torsion spring is sleeved on the second pin shaft; and one torsion arm of the second torsion spring is abutted against the second limiting wheel, and the other torsion arm of the second torsion spring is abutted against the base.

Furthermore, clamping wheels are sleeved on the first gear shaft and the second gear shaft, and grooves are formed in the clamping wheels.

The pen point thickness adjusting mechanism comprises a gear piece with an inclined plane and an abutting piece abutting against the gear piece;

the inclined plane is provided with a plurality of gear grooves, the abutting part is provided with an abutting part, and the abutting part can abut against the plurality of gear grooves; the handle assembly comprises an adjusting knob, and the adjusting knob is connected with the gear piece.

Further, still include album bits box, with the casing is detachable to be connected.

Compared with the prior art, the utility model has at least the following beneficial effects:

according to the pencil feeding mechanism, the pencil feeding mechanism is arranged on the mounting seat and provided with a first clamping assembly and a second clamping assembly for clamping a pencil, the first clamping assembly and the second clamping assembly are connected with the rotary table, the rotary table is connected with the handle assembly through the knife rest, namely the pencil feeding mechanism is driven by the handle assembly, the pencil can be extended into the knife rest while the knife rest is driven by the hand-operated handle assembly to cut the pencil, the feeding speed is controlled by the pencil cutting degree, and the using effect is improved; when the pencil is withdrawn from the pencil sharpener after the pencil is sharpened, the handle assembly only needs to be reversed, so that the pencil is more smoothly fed and withdrawn, and the problem of clamping stagnation is avoided; the first clamping assembly and the second clamping assembly can slide relatively, the size of a gap between the first clamping assembly and the second clamping assembly can be adjusted to adapt to pencils with different diameters, and the pencils are clamped through the first torsion spring and the second torsion spring, so that the torsion is balanced, and the structure is simple; the hand-operated pencil sharpener is also provided with a pencil point thickness adjusting mechanism which can adjust the thickness of the pencil point.

Drawings

FIG. 1 is a schematic view of the overall structure of the hand-operated pencil sharpener of the present invention (with a pencil attached);

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic structural view (with a pencil removed) of FIG. 1 with the housing and the chip collecting box removed;

FIG. 4 is a schematic view of the overall structure of the pencil feeding mechanism (with a pencil fitted);

FIG. 5 is a schematic structural view of FIG. 4 with the bottom cover removed;

FIG. 6 is an exploded view of the pen feed mechanism, blade carrier and handle assembly;

FIG. 7 is an exploded view of the pen tip thickness adjusting mechanism and the adjusting knob.

In the figure:

1. a housing; 2. a mounting seat;

3. a handle assembly; 30. a handle; 31. adjusting a knob; 300. a second clamping part;

4. a pen feeding mechanism; 40. a first clamping assembly; 41. a second clamping assembly; 42. a turntable; 43. a base; 44. a bottom cover; 45. a gap; 400. a first gear shaft; 401. a gear; 402. a first limit wheel; 403. a first pin shaft; 404. a first torsion spring; 405. a clamping wheel; 410. a second gear shaft; 411. a second limiting wheel; 412. a second pin shaft; 413. a second torsion spring; 420. a flange; 421. a drive tooth; 430. a through hole; 431. a first chute; 432. a second chute; 4050. a groove; 4200. a first straight face;

5. a tool holder; 50. a cutting blade; 51. mounting grooves; 52. a first clamping part; 510. a second straight face;

6. a nib thickness adjusting mechanism; 60. a gear member; 61. an abutting member; 600. a bevel; 601. a gear groove; 610. an abutting portion; 7. a scrap collecting box.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 6, a hand-operated pencil sharpener includes: the device comprises a shell 1, wherein a mounting seat 2 and a handle assembly 3 are arranged on the shell 1; specifically, the mounting seat 2 and the handle assembly 3 are respectively arranged at two ends of the shell 1, the mounting seat 2 and the shell 1 can be integrally arranged or separately arranged, and when the mounting seat 2 and the shell 1 are separately arranged, the mounting seat 2 is clamped with the shell 1, so that the pen feeding mechanism 4 and the like can be conveniently mounted; the pencil feeding mechanism 4 is arranged on the mounting base 2 and comprises a first clamping assembly 40, a second clamping assembly 41 and a turntable 42, and a gap 45 for a pencil to penetrate is formed between the first clamping assembly 40 and the second clamping assembly 41; the first clamping assembly 40 and/or the second clamping assembly 41 can slide relatively to adjust the size of the gap 45, so that pencils with different diameters can be adapted; the turntable 42 is used for driving the first clamping assembly 40 and/or the second clamping assembly 41; a blade carrier 5 and a cutting blade 50 disposed on the blade carrier 5, the blade carrier 5 being connected between the turntable 42 and the handle assembly 3, and the blade carrier 5 being capable of driving the turntable 42 and the handle assembly 3 being capable of driving the blade carrier 5. The pencil feeding mechanism 4 in the scheme is driven by the handle assembly 3, the pencil can be stretched into the knife rest 5 when the hand-operated handle assembly 3 drives the knife rest 5 to cut the pencil, the pencil is convenient to use, and the pencil feeding and withdrawing are controlled by changing the rotating direction of the handle assembly 3.

In the using process, the pencil feeding mechanism 4 comprises a base 43 and a bottom cover 44, the bottom cover 44 can protect parts mounted on the base 43 from being influenced by the outside, the safety is good, the base 43 and the bottom cover 44 are both connected with the mounting base 2, the base 43 and the bottom cover 44 are mutually buckled to form a mounting space in a surrounding manner, the base 43 is provided with a through hole 430, the turntable 42 is arranged in a hollow manner and is provided with a channel for a pencil to pass through, a flange 420 is arranged along the circumferential direction of the channel, the tool rest 5 is provided with a mounting groove 51, the flange 420 passes through the through hole 430 and is arranged in the mounting groove 51, namely the turntable 42 is inserted on the tool rest 5; the handle assembly 3 comprises a handle 30, and the handle 30 is connected with the other end of the knife rest 5.

Specifically, a first straight surface 4200 is arranged on the inner wall of the hollow flange 420, a second straight surface 510 is arranged on the groove wall of the mounting groove 51, the first straight surface 4200 abuts against the second straight surface 510, that is, the rotary disc 42 and the tool rest 5 rotate synchronously; one end of the knife rest 5, which is far away from the mounting groove 51, is provided with a first clamping portion 52, the handle 30 is provided with a second clamping portion, the first clamping portion 52 is clamped with the second clamping portion 300, the handle 30 is rotated, the handle 30 drives the knife rest 5, and the knife rest 5 drives the turntable 42 to rotate.

Preferably, first clamp assembly 40 comprises a first gear 401 shaft, and second clamp assembly 41 comprises a second gear 401 shaft; the end of the rotating disc 42 far away from the flange 420 is provided with a plurality of driving teeth 421 along the circumferential direction of the rotating disc 42, and the first gear 401 shaft and/or the second gear 401 shaft are in meshing transmission with the driving teeth 421. In operation, the rotating disc 42 rotates to drive the first clamping assembly 40 and the second clamping assembly 41 to rotate through the driving teeth 421, the rotating directions are opposite, and the rotating direction of the rotating disc 42 is changed by changing the rotating direction of the handle 30, so that the feeding or the drawing of the pencil is controlled.

Further preferably, the gears 401 on the first gear 401 axis and the second gear 401 axis are both helical gears 401, and since the driving teeth 421 on the rotating disc 42 are arranged along the circumferential direction of the rotating disc 42, that is, when the rotating disc 42 rotates, the rotating direction of the driving teeth 421 has a certain angle with the rotating direction of the gears 401, the helical gears 401 are arranged to make the meshing transmission smooth and the transmission noise small.

As shown in fig. 5 and 6, one side of the base 43 is provided with a first sliding groove 431, the other side is provided with a second sliding groove 432, one end of the first gear 401 shaft is slidably disposed on the first sliding groove 431, one end of the second gear 401 shaft is slidably disposed on the second sliding groove 432, or one of the first gear 401 shaft and the second gear 401 shaft is slidable relative to the mounting base 2, so as to change the gap 45 between the first clamping assembly 40 and the second clamping assembly 41.

In actual use, a first limiting wheel 402 is sleeved at one end, away from the gear 401, of the first gear 401 shaft, and a second limiting wheel 411 is sleeved at one end, away from the gear 401, of the second gear 401 shaft; a first pin shaft 403 is arranged at one end of the base 43 close to the first clamping component 40, and a second pin shaft 412 is arranged at one end of the base 43 close to the second clamping component 41; a first torsion spring 404 is sleeved on the first pin 403, a torsion arm of the first torsion spring 404 abuts against the first limiting wheel 402, and the other torsion arm of the first torsion spring 404 abuts against the base 43; a second torsion spring 413 is sleeved on the second pin 412; and a torsion arm of the second torsion spring 413 abuts against the second limiting wheel 411, and the other torsion arm of the second torsion spring 413 abuts against the base 43. Namely, the first torsion spring 404 and the second torsion spring 413 make the first clamping assembly 40 and the second clamping assembly 41 close to each other, so that the pen clamping of the first clamping assembly 40 and the pen clamping of the second clamping assembly 41 are reliable and can be reset quickly.

Preferably, the first gear 401 shaft and the second gear 401 shaft are both sleeved with a clamping wheel 405, the clamping wheel 405 is a soft plastic wheel, i.e. a flexible member, and a groove 4050 is formed on the clamping wheel 405, so that a pencil can be accommodated conveniently.

As shown in fig. 6 and 7, the sharpener further comprises a pen point thickness adjusting mechanism 6 provided on the holder 5, the pen point thickness adjusting mechanism 6 comprising a stopper 60 having a slope 600 and an abutment 61 abutting on the stopper 60, the stopper 60 and the abutment 61 being relatively rotatable; the inclined plane 600 is provided with a plurality of gear slots 601, the abutting piece 61 is provided with an abutting part 610, and the abutting part 610 can abut against the plurality of gear slots; the handle assembly 3 includes an adjusting knob 31, the adjusting knob 31 is connected to the shift member 60, and the adjusting knob 31 is rotated to change the contact position of the abutment member 61 with the shift member, so as to adjust the thickness of the pen tip cut by the cutter 50.

Preferably, the chip collecting box 7 is further included, and the chip collecting box 7 is detachably connected with the shell 1 through a bulge at the bottom and a buckle on the shell 1.

In this scheme, this pencil sharpener is through setting up into a mechanism 4, realizes that hand handle 30 drives advancing the pen and going out the pen of pencil, convenient to use, and should advance a mechanism 4 and can be applicable to the pencil of different diameters size, is provided with nib thickness adjustment mechanism 6 simultaneously, makes whole hand formula pencil sharpener have multiple functions.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Claims

1. A hand-operated pencil sharpener is characterized by comprising:

2. The hand-operated pencil sharpener according to claim 1, wherein the pencil feeding mechanism comprises a base connected with the mounting base, the base is provided with a through hole, the turntable is provided with a flange, the tool rest is provided with a mounting groove, and the flange penetrates through the through hole and is arranged in the mounting groove in a penetrating manner;

3. The hand-operated pencil sharpener according to claim 2, wherein a first straight surface is arranged on the inner wall of the flange, a second straight surface is arranged on the groove wall of the mounting groove, and the first straight surface abuts against the second straight surface;

4. The hand-operated sharpener of claim 3 wherein said first clamping assembly includes a first gear shaft and said second clamping assembly includes a second gear shaft;

5. The hand-operated sharpener of claim 4 where the gears on the first and second gear shafts are helical gears.

6. The hand-operated pencil sharpener according to claim 4, wherein a first sliding groove is formed in one side of the base, and a second sliding groove is formed in the other side of the base; one end of the first gear shaft is slidably disposed on the first sliding groove, and/or one end of the second gear shaft is slidably disposed on the second sliding groove.

7. The hand-operated pencil sharpener according to claim 6, wherein a first limiting wheel is sleeved on one end of the first gear shaft, which is far away from the gear, and a second limiting wheel is sleeved on one end of the second gear shaft, which is far away from the gear; a first pin shaft is arranged at one end, close to the first clamping assembly, of the base, and a second pin shaft is arranged at one end, close to the second clamping assembly, of the base;

8. The hand-operated pencil sharpener of claim 4, wherein the first gear shaft and the second gear shaft are both sleeved with clamping wheels, and the clamping wheels are provided with grooves.

9. The hand-operated pencil sharpener according to claim 1, further comprising a pencil point thickness adjusting mechanism disposed on the sharpener frame, the pencil point thickness adjusting mechanism comprising a blocking member having an inclined surface and an abutting member abutting on the blocking member;

the inclined plane is provided with a plurality of position blocking grooves, the abutting part is provided with an abutting part, and the abutting part can abut against the plurality of position blocking grooves; the handle assembly comprises an adjusting knob, and the adjusting knob is connected with the gear piece.

10. The hand-operated pencil sharpener of claim 1 further comprising a dust collection box removably connected to said housing.