TWM551981U - Sharpening device with multi-mode adjustment for pencil sharpener - Google Patents

Description

Multi-stage adjustment cutting device for pencil sharpener

The present invention relates to a pencil sharpener, and more particularly to a multi-stage adjustment cutting device for a pencil sharpener.

In the operation, the existing pencil sharpener rotates by one hand crank and rotates with one tool holder, and at the same time, the fixed gear carrier engages with the gear of a cutter mounted on the tool holder, so that the cutter can Producing revolution and rotation, which can cut the pencil inserted into the holder, but the pencil has no function to set the sharpness of the cutting core, so the user must constantly put the pencil during the cutting process. The thickness and sharpness of the inspection refill are taken out, and there is a problem that the use is rather inconvenient and the cutting efficiency is not good.

Therefore, the object of the present invention is to provide a multi-stage adjustment cutting device for a pencil sharpener which can set the thickness and sharpness of the cutting refill in multiple stages to improve the usability and the cutting efficiency.

Therefore, the novel multi-stage adjusting cutting device is suitable for being mounted on a pencil sharpener for cutting a core of a pen and having a casing and a fixing base fixed to the casing, the fixing The seat has an inner ring gear surrounding an axis, and the multi-stage adjusting cutting device comprises an operating unit, a cutting unit, a tilting unit and an adjusting unit.

The operating unit includes a connecting barrel located in the fixing base, and a knob extending radially from the connecting barrel, the connecting barrel has a shaft column extending along the axis; the cutting unit includes a cutting space formed a tool holder, a connecting rod at one end of the tool holder and coupled to the connecting barrel, and a pen holder inserted at the other end of the tool holder for the pen holder, mounted to the tool holder and communicating with the cutting space a cutter, a transmission gear that can drive the cutter and mesh with the internal ring gear, and a through hole disposed along the axis of the connecting rod and communicating with the cutting space; the tilting unit includes a connecting barrel a linkage cap disposed inside the shaft column, and a clamp post disposed on an outer cap surface of the linkage cap, and a coupling cap extending from the linkage cap away from the two clamping posts and inserted into the connecting rod a limiting rod in the through hole, and an elastic member limited between the connecting rod and the connecting cap, the elastic member having the connecting cap having a tendency to move away from the connecting rod, the limiting rod has a tendency An abutment surface for the refill; the adjustment The component includes an adjusting cylinder that is rotatably disposed outside the connecting cylinder, a latching ring formed in the adjusting cylinder and surrounding the axis, and is disposed on the latching ring for the two-cylinder ring a second card slot, a second card slot, and a second card slot, wherein the slots of the two first card slots are the same, and the slot depths of the second card slots are the same. The slots of the third card slot are the same, and the slot depths of each of the first card slot, the second card slot, and the third card slot are different.

The effect of the present invention is that by rotating the adjusting cylinder, the two first card slot, or the second card slot, or the second card slot and the second card slot can be locked. Driving the swaying unit to move along the axis, and changing the distance between the abutting surface of the limiting rod and the pen barrel, so that the refills with different thickness and sharpness can be cut, which is not only convenient to use and operate, but also Improve cutting efficiency.

The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIG. 1 , FIG. 2 and FIG. 9 , the novel multi-stage adjusting cutting device is suitable for being mounted on a pencil sharpener 10 for cutting a pen set 100. The pen sharpener 10 has a casing 11 and is mounted and fixed on the machine. The fixing seat 12 of the casing 11 has an inner ring 121.

Referring to FIG. 1 to FIG. 9 , the embodiment of the present invention includes an operation unit 20 , a cutting unit 30 , a tilting unit 40 , an adjusting unit 50 , a guiding unit 60 , a latching unit 70 , and A marking unit 80.

The operating unit 20 includes a connecting barrel 21 located in the fixing base 12, and a knob 22 extending radially from an outer cylindrical surface 211 of the connecting barrel 21. The connecting barrel 21 has an outer cylindrical surface 211 and an inner cylindrical surface 212 around an axis I. A spacer 213 is connected to the inner cylindrical surface 212. The inner cylindrical surface 212 and the spacer 213 cooperate to form an opening. a rightward chamber 214, a shaft post 215 extending from the spacer 213 along the axis I into the chamber 214, and a spacer 213 disposed along the axis I and communicating with the spacer 213, the housing 215 A shaft hole 216 of 214.

The cutting unit 30 includes a seat 32 forming a cutting space 31, a connecting rod 33 at one end of the seat 32 and coupled to the shaft 215, and a cutter 100 at the other end of the seat 32. a pen holder 34 that can be inserted into the cutting space 31, a cutting blade 35 mounted on the blade holder 32 and communicating with the cutting space 31, a transmission gear that can drive the cutting blade 35 and mesh with the internal ring gear 121 a through hole 37 disposed on the connecting rod 33 and communicating with the cutting space 31 and the shaft hole 216 along the axis I, and disposed in the cutting base 32 and located in the cutting space 31 and engaging the through hole 37 Two ribs 38.

In this embodiment, the connecting rod 33 is a screw, and is screwed to the shaft column 215, so that the operating unit 20 can rotate the cutting unit 30 about the axis I, and the cutting blade 35 can revolve and rotate, and then can be cut. The writing instrument 100 has a structure and an action of revolving and rotating by the cutting blade 35, which is easily understood by those having ordinary knowledge in the technical field of the present invention, and is not a feature of the present invention, so the details thereof will not be described herein. Structure and action.

The through hole 37 has a non-circular radial cross section, and has two side portions 371 spaced apart from each other and parallel to the axis I, and two recessed grooves 372 respectively disposed on the two side portions 371 along the axis I, the two convex portions The strip 38 engages the two side portions 371 and extends toward the cutting space 31.

The slewing unit 40 includes a linking cap 41 disposed in the housing 214 of the connecting barrel 21 and sleeved outside the shaft post 215, and a latching post 42 disposed on an outer cap surface 411 of the linking cap 41. a limiting rod 43 extending from the linking cap 41 in a direction away from the two clamping posts 42 and inserted into the through hole 37 through the shaft hole 216, and a connecting rod 33 and the linking cap 41 therebetween The elastic member 44 has the tendency of the interlocking cap 41 to move constantly away from the connecting rod 33.

The radial cross section of the limiting rod 43 corresponds to the non-circular shape of the through hole 37, and has an abutting surface 431 on which a penetrating core 34 of the pen holder 100 is abutted. The surface 431 extends toward the connecting cap 41 and can abut the two side surfaces 432 of the two side portions 371 and the two molding strips 433 respectively disposed on the two side surfaces 432 and embedded in the two fitting grooves 372. The engagement with the two molding strips 433 prevents the limiting rod 43 from being moved radially relative to the axis I, and the stability of the limiting rod 43 can be improved, and the limiting rod 43 can be prevented from being subjected to a radial external force. A break occurs.

The elastic member 44 is a compression spring and is sleeved outside the limiting rod 43. The two elastic legs are disposed on the connecting rod 33 and the connecting cap 41, and the connecting cap 41 can be biased to make the elastic force. The interlocking cap 41 has a tendency to move away from the connecting rod 33 constantly.

The adjusting unit 50 includes an adjusting cylinder 51 which is sleeved outside the outer cylinder surface 211 of the connecting cylinder 21, and is disposed on a base wall 511 of the adjusting cylinder 51 and surrounds the axis I and is sleeved on the a latching ring 52 outside the connecting cap 41, and two first latching slots 53 and two second latching slots 54 for sequentially positioning the latching ring 52 with the latching ring 42 The second card slot 55, the second card slot 56, and the second card slot 57 have the same slot depth, and the second card slot 54 has the same slot depth. The slot depths of the two third latching slots 55 are the same, the slot depths of the two fourth latching slots 56 are the same, and the slots of the second and fifth latching slots 57 are the same, but each of the first latching slots 53 is The groove depths of the second latching groove 54, the third latching groove 55, the fourth latching groove 56, and the fifth latching groove 57 are different.

The adjusting cylinder 51 has the base wall 511, a surrounding wall 512 connecting the base wall 511 and surrounding the axis I and located outside the click ring 52, and a through hole extending through the base wall 511 and communicating with the click ring 52. 513, the through hole 513 is partially penetrated by the linkage cap 41.

In this embodiment, the two latching posts 42 are spaced apart from each other by 180 degrees, so the two first latching slots 53 , the two second latching slots 54 , the second and third latching slots 55 , and the second and fourth latching slots 56 . The two fifth card slots 57 are also spaced 180 degrees apart.

In addition, in the embodiment, the first card slot 53, the second card slot 54, the second card slot 55, the second card slot 56, and the second card slot 57 The slot depth is gradually increased, that is, the slot depth of the two first latching slots 53 is the shallowest, and the slots of the second and fifth latching slots 57 are the deepest, so that the latching ring 52 forms two serrated ramps, thereby When the adjusting cylinder 51 is rotated, the two first latching slots 53, or the two second latching slots 54, or the two third latching slots 55, or the second and fourth latching slots 56, or the The second card slot 57 and the two card post 42 are latched to drive the tilting unit 40 to move along the axis I, thereby changing the abutting surface 431 of the limiting rod 43 and the pen barrel 34. For the distance between the two first latching slots 53 and the two latching posts 42 , the slot depths of the first latching slots 53 are the smallest and the shallowest. The distance between the abutting surface 431 of the limiting rod 43 and the pen barrel 34 is the shortest, so that the shortest and thickest refill 101 can be cut. Referring to FIG. 5 and FIG. 13, when the fifth card slot 57 is used. When the two-card column 42 is stuck, Because the groove depths of the second and fifth card slots 57 are the largest and the deepest, the distance between the abutting surface 431 of the limiting rod 43 and the pen holder 34 is the longest, so that the longest and thinnest tip can be cut. 101.

The guiding unit 60 is disposed between the connecting barrel 21 and the connecting cap 41, and includes two guiding blocks 61 disposed on the inner cylindrical surface 212 of the connecting barrel 21, and is disposed on the connecting cap 41 and embedded therein. The two guide grooves 62 outside the two guide blocks 61, by the cooperation of the two guide blocks 61 and the two guide grooves 62, can improve the accuracy of the movement of the tilting unit 40 along the axis I, and can prevent the tilting The unit 40 is rotated to increase the stability of the swaying unit 40.

The latching unit 70 is disposed between the connecting barrel 21 and the adjusting cylinder 51, and includes a one disposed between the outer cylinder surface 211 of the connecting cylinder 21 and the surrounding wall 512 of the adjusting cylinder 51 and can be engaged with each other. The convex ring 71 and the concave ring 72 are disposed on the outer cylinder surface 211. The concave ring 72 is disposed on the surrounding wall 512, but the positions of the convex ring 71 and the concave ring 72 are interchangeable. Can achieve the same effect.

The marking unit 80 includes a reference mark 81 marked on the linking cap 41, and is marked on the base wall 511 of the adjusting cylinder 51 and aligned with one of the first latching slots 53 and the second latching slot 54. a third card slot 55, the fourth card slot 56, a first refill pattern 82 of the fifth card slot 57, a second refill pattern 83, a third refill pattern 84, and a fourth The refill pattern 85 and a fifth refill shape pattern 86, and corresponding to the shortest and thickest refill shape pattern, gradually become the longest and thinnest refill shape pattern.

In use, referring to FIG. 1 , FIG. 5 and FIG. 9 , when the user wants to cut out the shortest and thickest refill 101, the adjustment cylinder 51 is first rotated to align the first refill pattern 82 with the reference mark. 81, it is indicated that the two first latching slots 53 are engaged with the two latching posts 42 , and then the writing instrument 100 is inserted into the pen tray 34 until the refill 101 touches the abutting surface of the limiting rod 43 . 431, and then rotating the knob 22, the shortest and thickest refill 101 can be cut. Referring to FIG. 6 to FIG. 8 , although the length of the limiting rod 43 entering the cutting space 31 is longer in the state of use, the two sides 432 of the limiting rod 43 abut against the through hole 37 . The side portion 371, and a portion of the two molding strips 433 of the limiting rod 43 are embedded in the two fitting grooves 372, and the other portion abuts the two protruding strips 38, so that the stability of the limiting rod 43 is excellent. .

Referring to FIG. 1 , FIG. 9 , FIG. 10 , FIG. 11 , FIG. 12 and FIG. 13 , the user only needs to rotate the adjusting cylinder 51 according to the thickness sharpness of the refill 101 that is to be cut, and select the first refill. The graphic 82, or the second refill graphic 83, or the third refill graphic 84, or the fourth refill graphic 85, or the fifth refill graphic 86 is aligned with the reference mark 81, so that the second The first card slot 53 or the second card slot 54, or the second card slot 55, or the second card slot 56, or the second card slot 57 and the second card The mast 42 generates a cassette and drives the tilting unit 40 to move along the axis I, thereby changing the distance between the abutting surface 431 and the pen holder 34, that is, changing the refill 101 of the writing instrument 100. The length in the cutting space 101 can finally cut the refill 101 with different thickness and sharpness.

It should be noted that, in this embodiment, although the five sets of the card slot are provided, the rotating cylinder 51 is provided with five rotations, and the refills 101 of five different thickness and sharpness can be cut out, but it is easy to understand. Yes, the number of the aforementioned card slot can be changed, and the refill 101 corresponding to different thickness and sharpness can be cut, for example, three sets of card slots are provided, and the refills 101 of three different thickness sharpness can be cut. .

Referring to FIG. 14, when the refill 101 is broken during the cutting process and is caught between the holder 32 and the cutting blade 35, when the cutter 35 is idling, the user only needs to press the linkage cap 41. The limiting rod 43 can be moved toward the pen holder 34, and the broken refill 102 is pushed by the abutting surface 431 to drop the broken refill 102, so that the problem that the cutting blade 35 is idling can be eliminated. When the interlocking cap 41 is loosened, the interlocking cap 41 is automatically reset by the restoring force of the elastic member 44, and the cutting operation can be performed again.

In summary, the multi-stage adjustment cutting device of the novel pencil sharpener has the following advantages and advantages, so that the object of the present invention can be achieved.

1. The present invention can rotate the adjusting cylinder 51 in five stages, and drive the limiting rod 43 to move along the axis I, so that the abutting surface 431 and the pen barrel 34 form five different distances, thereby cutting out The refill 101 has five different thickness sharpnesses, whereby the user can cut the refill 101 according to the requirement by rotating the adjustment cylinder 51, which is not only convenient to use, but also convenient to operate, and can improve cutting efficiency.

2. The present invention can prevent the limiting rod 43 from moving radially relative to the axis I by the engagement of the two molding strips 433 of the limiting rod 43 and the two fitting grooves 372 of the through hole 37. The stability of the limiting rod 43 is improved, and at the same time, the limiting rod 43 can be prevented from being broken when subjected to a radial external force.

The two sides 432 of the limiting rod 43 abut against the two side portions 371 of the through hole 37, and a part of the two molding strips 433 of the limiting rod 43 are embedded in the two fitting grooves 372. The other part abuts against the two ribs 38, so that the limiting rod 43 can be prevented from shaking, and the limiting rod 43 is provided with excellent stability.

4. The present invention, by means of the marking unit 80, allows the user to easily know the current state of the cutting type, and can improve the convenience of use.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

10‧‧‧penning machine

11‧‧‧Shell

12‧‧‧ Fixed seat

121‧‧‧ internal tooth ring

20‧‧‧Operating unit

21‧‧‧Connecting tube

211‧‧‧Outer tube surface

212‧‧‧ inner cylinder

213‧‧‧ spacer

214‧‧ ‧ room

215‧‧‧ shaft column

216‧‧‧ shaft hole

22‧‧‧ handle

30‧‧‧Cutting unit

31‧‧‧Cutting space

32‧‧‧Tool holder

33‧‧‧ Connecting rod

34‧‧‧Into the pen holder

35‧‧‧Cutter

36‧‧‧Transmission gear

37‧‧‧through hole

371‧‧‧ side

372‧‧‧Inlay

38‧‧ ‧ ribs

40‧‧‧掣动单元

41‧‧‧ linkage cap

411‧‧‧ outer cap

42‧‧‧Cars

43‧‧‧Limited rod

431‧‧‧Resistance

432‧‧‧ side

433‧‧‧ Inserts

44‧‧‧Flexible parts

50‧‧‧Adjustment unit

51‧‧‧Adjustment

511‧‧‧ base wall

512‧‧‧round the wall

513‧‧‧Perforation

52‧‧‧Card ring

53‧‧‧First card slot

54‧‧‧Second card slot

55‧‧‧The third card slot

56‧‧‧fourth card slot

57‧‧‧ fifth card slot

60‧‧‧Transfer unit

61‧‧‧ Guide block

62‧‧‧ Guide slot

70‧‧‧Card unit

71‧‧‧ convex ring

72‧‧‧ concave ring

80‧‧‧Marking unit

81‧‧‧ benchmark mark

82‧‧‧First core graphic

83‧‧‧Second refill graphics

84‧‧‧ Third refill graphics

85‧‧‧Four refill graphics

86‧‧‧ fifth refill graphic

100‧‧‧ pens

101‧‧‧Refill

102‧‧‧ broken pen refill

I‧‧‧ axis

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is a perspective view of an embodiment of the multi-stage adjustment cutting device mounted on a pencil sharpener; 3 is a combined perspective view showing a combined state of the embodiment and a fixing base of the pencil sharpener; FIG. 3 is an assembled perspective view of the embodiment; FIG. 4 is an exploded perspective view showing the embodiment including an operating unit and a cutting unit FIG. 5 is a partially exploded perspective view of the embodiment showing the swaying unit and the adjusting unit; FIG. 6 is a partially exploded perspective view of the embodiment, showing the operating unit, The cutting unit and the tilting unit; FIG. 7 is a partially exploded perspective view of the embodiment, showing the cutting unit and the tilting unit; FIG. 8 is an incomplete use diagram of the embodiment, showing a pencil refill Resisting the abutting surface of a limiting rod of the swaying unit, and the two inserting strips of the limiting rod abut against the two ridges of the shank; FIG. 9 is A combination cross-sectional view of the embodiment shows a state in which the sharpness of the first type of refill is cut; Fig. 10 is a view similar to Fig. 9 showing a state in which the sharpness of the second refill is cut; Fig. 11 is a view similar to Fig. 9. A view showing a state in which the third type of refill sharpness is cut; Fig. 12 is a view similar to Fig. 9 showing a state in which the fourth refill thickness sharpness is cut; Fig. 13 is a view similar to Fig. 9, showing The state in which the fifth refill thickness sharpness is cut; and Fig. 14 is a view similar to Fig. 13 showing the state in which a broken refill is excluded.

20‧‧‧Operating unit

21‧‧‧Connecting tube

211‧‧‧Outer tube surface

213‧‧‧ spacer

215‧‧‧ shaft column

216‧‧‧ shaft hole

22‧‧‧ handle

30‧‧‧Cutting unit

43‧‧‧Limited rod

431‧‧‧Resistance

432‧‧‧ side

433‧‧‧ Inserts

44‧‧‧Flexible parts

50‧‧‧Adjustment unit

51‧‧‧Adjustment

511‧‧‧ base wall

31‧‧‧Cutting space

32‧‧‧Tool holder

33‧‧‧ Connecting rod

34‧‧‧Into the pen holder

35‧‧‧Cutter

36‧‧‧Transmission gear

40‧‧‧掣动单元

41‧‧‧ linkage cap

42‧‧‧Cars

512‧‧‧round the wall

513‧‧‧Perforation

52‧‧‧Card ring

53‧‧‧First card slot

57‧‧‧ fifth card slot

62‧‧‧ Guide slot

70‧‧‧Card unit

71‧‧‧ convex ring

72‧‧‧ concave ring

I‧‧‧ axis

Claims (8)

A multi-stage adjustment cutting device for a pencil sharpener, which is used for cutting a core of a pen and has a casing and a fixing seat fixed to the casing, the fixing seat having an inner circumference a multi-stage adjustment cutting device comprising: an operating unit comprising a connecting barrel in the fixing seat, and a knob extending radially from the connecting barrel, the connecting barrel having an axis extending along the axis a cutting unit comprising a tool holder forming a cutting space, a connecting rod at one end of the tool holder and coupled to the connecting barrel, and a pen holder inserted at the other end of the tool holder for inserting the pen a cutter mounted to the tool holder and communicating with the cutting space, a transmission gear that can drive the cutter and mesh with the internal ring gear, and a passage disposed along the axis of the connecting rod and communicating with the cutting space a ram unit comprising a locating cap located in the connecting barrel and sleeved outside the shaft post, and a latching post disposed on an outer cap of the linking cap, one facing away from the linking cap Directional extension of the two-cylinder column And inserting a limiting rod in the through hole of the connecting rod, and an elastic member limited between the connecting rod and the connecting cap, the elastic member is configured to have a constant tendency to move away from the connecting rod The limiting rod has an abutting surface for the refill; and an adjusting unit includes an adjusting cylinder that is rotatably disposed outside the connecting barrel, and is formed in the adjusting cylinder and surrounds a latching ring of the axis, and two first latching slots, two second latching slots, and two third latching slots provided in the latching ring for latching with the two latching posts, and the second The groove depths of the one card groove are the same, the groove depths of the two second card groove are the same, the groove depths of the two third card groove are the same, each of the first card groove, the second card groove, the The slot depth of the third card slot is different, and the tilting unit can be driven by the two first latching slots, the second latching slots, the second latching slots, and the two latching cartridges Moving along the axis to change the distance between the abutting surface of the limiting rod and the pen holder. The multi-stage adjustment cutting device of the pencil sharpener according to claim 1, wherein the through hole has a non-circular radial cross section, and has two sides spaced apart from each other and parallel to the axis, and is respectively disposed along the axis The two side grooves of the two side portions, the radial section of the limiting rod corresponds to the non-circular shape of the through hole, and has two sides connecting the abutting surface toward the connecting cap and abutting the two side portions. And two embedded strips respectively disposed on the two sides and embedded in the two recessed grooves. The multi-stage cutting device of the pencil sharpener according to claim 2, wherein the cutting unit further comprises two ridges disposed on the tool holder and located in the cutting space and engaging the through hole, the two ribs being used for For the two embedded strips to abut. The multi-stage adjustment cutting device of the pencil sharpener according to any one of claims 1 to 3, further comprising a guiding unit disposed between the connecting barrel and the linking cap, the guiding unit comprising the connection unit a second guide block of the barrel, and two guide grooves disposed on the linkage cap and embedded outside the two guide blocks. The multi-stage adjustment cutting device of the pencil sharpener according to any one of claims 1 to 3, further comprising a carding unit disposed between the connecting barrel and the adjusting cylinder, the carding unit comprising the connection unit a convex ring and a concave ring between an outer cylinder surface of the cylinder and an inner cylinder surface of the adjustment cylinder. The multi-stage adjustment cutting device of the pencil sharpener according to claim 1, wherein the groove depth of each of the first card slot, the second card slot, and the third card slot is gradually increased. The multi-stage adjustment cutting device of the pencil sharpener according to claim 1, wherein the adjustment unit further comprises two fourth card slots and two fifth card slots provided in the cassette ring, and the second card cassette The groove depth of the groove is the same, the groove depths of the two fifth card groove are the same, and each of the first card groove, the second card groove, the third card groove, the fourth card groove, the The groove depth of the fifth card groove is gradually increased. The multi-stage adjustment cutting device of the pencil sharpener according to claim 7, further comprising a marking unit, wherein the marking unit comprises a reference mark marked on the linkage cap, and is marked on the adjustment cylinder and aligned with one of the first a card slot, the second card slot, the third card slot, the fourth card slot, a first refill shape mark of the fifth card slot, a second refill shape mark, a first A three-core shape mark, a fourth refill shape mark, and a fifth refill shape mark.