TWI714490B - Pen feeding device of sharpener - Google Patents

Abstract

A pen feeding device of a pencil sharpener includes a base, a positioning frame, and a counting shaft. One side of the support is provided with a transmission disc and a turntable. The transmission disc can be driven to rotate by the rolling device of the pen sharpener. And link the turntable, the surface of the turntable has a number of friction lines, the positioning frame is pivotally connected with a number of positioning shafts, the number of rotation shafts are arranged on the positioning shaft, each of the rotation shafts has a pen-holder roller, a friction wheel, the pen-holder The roller is used to pinch and advance the pencil, and the friction wheel can be driven by the friction transmission energy of the turntable. By the rotation of the friction wheel and the positioning shaft, the pen-holder roller forms an adjustable jaw, which can automatically adjust the jaw size for pencils with different diameters and different appearance shapes (such as triangles, circles, etc.) Holds the pen and ensures that the center position of the pencil is maintained at the rolling center line of the pencil sharpener, and the pencil can be automatically fed into the pen smoothly and smoothly during cutting, and the pencil can be easily ejected after the cutting is completed.

Description

Pen feeding device of sharpener

The present invention relates to a pen feeding device, in particular to a pen-holding device that can automatically adjust the size of the gripping mouth of pencils with different diameters and different appearance shapes, and can smooth and smooth the pencils when cutting. Automatic pen feed, the pen feed device of the pencil sharpener that can easily withdraw the pencil after cutting.

Conventional traditional pencil sharpeners, which are used to clamp the pencil shaft and feed the pen feed device into the rolling device are all set on the outer side of the front of the pencil sharpener housing, through a pair of elastically stretchable parallel projections The guide rod in the housing is positioned on the housing. When sharpening the pen, first pull the chuck of the pen feeding device along a pair of guide rods against the elastic force of the return spring at the inner end of the guide rod, and then press the handle of the chuck to open the jaws of the chuck. , Insert the pencil until the tip of the pencil enters the tapered hole of the chip rolling device, release the external force of the operating handle, the chuck will narrow the jaws to clamp the penholder, and the spring elastic restoring force of the guide rod gives the penholder to feed the rolling device Then, as the hobbing device is rotated by the hand crank to sharpen the pen, the pen holder gradually advances until the cutting operation of the pen tip is completed. After sharpening the pen, when taking out the pencil, you must first press the handle to open the grip of the chuck before taking out the pen.

The operation of this pinch pen device is quite cumbersome, and it is often necessary to pull it again because the guide rod is not pulled out long enough, or the operating handle is released too early, so that the chuck strongly hits the pencil sharpener housing, making an ear-piercing sound, such as Accidents of pinching your fingers may even happen if you are not careful. At the same time, the three clamps of the chuck The tooth-like holding surface of the block is easy to bite the surface of the penholder, so that the lacquer or printing may fall off or leave tooth marks.

In view of this, the applicant has made appropriate improvements to traditional pencil sharpeners, such as the pencil sharpener disclosed in Taiwan Patent Publication No. I525006 "Pencil Sharpener Automatic Pen Feeding Device" and Publication No. M469198 "Pencil Sharpener" This is the automatic pen device.

Among them, the Announcement No. I525006 "Pen Sharpener Automatic Pen Feeding Device" is characterized in that the automatic pen feeding device is composed of: a support fixed to the inner wall of the pen insertion port side of the housing; a support that can be accommodated in the support Separately connected with the rolling device and driven by it to rotate the turntable; a friction turntable in the turntable seat of the outer ring of the cam seat that can be driven to rotate by a compression cam; and a set of friction turntables containing a pair of disks arranged on the friction turntable. It is supported in parallel on the support in anti-parallel, and can be formed by the pinching pen device of the pen-clamping roller assembly that is driven by the friction force to rotate in the forward and reverse directions; wherein the driving disc system forms a low circle The cylindrical body has at least two grooves of the same shape formed on its peripheral wall. The grooves have an inclined bottom. One surface of the turntable opposite to the drive disc is convexly provided with the same number and corresponding shift forks as the grooves of the drive disc. The fork is inserted into the groove and can be locked on an end wall of the groove when the drive disc rotates to drive the turntable to rotate, forming a linkage between the drive disc and the turntable. The groove forms a sloping bottom that gradually increases in one direction. When the driving disc is forward and backward, the force of the shift fork against the turntable is different, so that the friction between the turntable and the friction wheel is different, and the pen is tighter when it is retracted. Two different feels when the pen is looser.

The Announcement No. M469198 "Pencil Sharpener" is characterized by: a pencil sharpener housing, a hob-type cutting device installed in the housing for cutting pencils, and a penetrating and guiding pencil to enter The cutting device is composed of a roller-type pen holding device for sharpening a pen; wherein the pen holding device includes: a base fixed in the shell and two pairs of parallel roller bearings protruding on the disk surface, one is set in the base and The drive disc that can rotate in conjunction with the cutting device is set together in the The friction turntable above the driving disk and which can be driven and rotated by the driving disk, and a pair of pen-holder roller sets arranged on the roller bearings and capable of rotating in opposite directions by the friction transmission of the friction turntable, are combined into a unit assembly; It lies in: the roller set of the pair of gripping pens is supported on each corresponding roller bearing by the rotating shaft which can move in the axial direction and can move in the radial direction (lateral). The size of the clamp can be automatically adjusted with the diameter of the inserted pencil, so that pencils of different calibers can be clamped for sharpening operations.

However, although the pinch pen device of the above two types of pencil sharpeners can pinch pencils of different diameters for pencil sharpening, the pinch pen device can only clamp the two sides of the pencil in an opposite shape. In the case of a pencil, because the triangle has three corners and the pen-holder device is adapted to the clamping force point and balance, it can only clamp one corner on one side of the pencil and one side on the other side of the pencil at most, making the center of the triangle pencil The position deviates from the rolling center line of the pencil sharpener. As a result, the cutting surface around the triangle pencil must be uneven after cutting, that is, the cutting surface of the pencil is larger on one side and smaller on the other. In addition to poor aesthetics, it also The posture of holding the pen is incorrect, the work of holding the pen is incorrect, and the holding pen feels uncomfortable.

Therefore, if the triangular pencil can be clamped and its center position is maintained at the rolling center line of the pencil sharpener, the cutting surface of the circumference of the triangular pencil after cutting must be fairly even.

How to improve these pencil sharpeners to make their functions more perfect and ideal is the focus of the inventor's research and development.

It is that the inventor is based on the idea of innovation, based on years of professional experience in product development in this technical field, as well as active research and development thinking, and through countless actual design experiments, the invention was born.

The purpose of the present invention is to provide a pen-feeding device for a pencil sharpener, which can automatically adjust the size of the jaws of pencils with different diameters and different shapes to perform a pen-holding function, and to ensure that the center position of the pencil is maintained at the sharpener The machine's hobbing centerline can automatically advance and retract the pen smoothly and smoothly during the cutting process.

In order to achieve the above-mentioned purpose, the present invention includes a base, a positioning frame, and a counting shaft, wherein the support is arranged on the housing of the pen inlet of the pencil sharpener, and one side of the support is provided with a driving disc and a rotating disc , The drive disc can be driven by the rolling device of the pencil sharpener to rotate, and is linked with the turntable. The drive disc and the turntable respectively have connecting holes and through holes for pencils to pass through and communicate with the pen inlet. The surface has a number of friction lines; the positioning frame is combined with the support, and the positioning frame is movably pivotally connected with a number of positioning shafts facing the turntable; the number rotation shaft is arranged on the positioning shaft, and each rotation shaft has a pen-holder roller, A friction wheel, wherein the pen-holder roller presents a through hole state surrounding the turntable, and is used to roll toward the through hole to pinch and advance the pencil. The friction wheel can be driven by the friction transmission energy of the turntable, thereby enabling the positioning The shaft, the rotating shaft, and the pen-holder roller rotate.

By the rotation of the friction wheel and the positioning shaft, the pen-holder roller forms an adjustable jaw, which can automatically adjust the jaw size for pencils with different diameters and different appearance shapes (such as triangles, circles, etc.) The function of clamping the pen and ensuring that the center position of the pencil is maintained at the rolling center line of the pencil sharpener, so that the cutting surface of the circumference of the pencil after cutting is average and beautiful, and the pencil can be smoothly and smoothly fed into the pen automatically during cutting. The pencil can be easily withdrawn after cutting.

The following is only a detailed description with specific embodiments and drawings, so that your reviewer can have a better understanding and understanding of the functions and features of the present invention.

1: Pen device

10: Support

11: Combination hole

20: positioning frame

21: positioning axis

211: positioning plate

212: bearing seat

22: pivot hole

23: Joint

24: flange

25: limit board

30: shaft

31: Clip pen roller

32: Friction wheel

33: set body

34: stop body

40: drive plate

41: connecting hole

42: cogging

43: elastic sheet

50: turntable

51: Through hole

52: Friction lines

53: convex pin

80: pencil

91: Hobbing device

92: Handle

93: Hollow shaft

Figure 1 is a side view of the present invention combined with the hobbing device.

Figure 2 is an exploded perspective view of the present invention.

Figure 3 is a perspective view of the positioning frame and rotating shaft of the present invention.

Figure 4 is a perspective view of the positioning frame of the present invention with the rotating shaft removed.

Figure 5 is a cross-sectional view of an embodiment of the invention when the pen is clamped.

Figure 6 is a top view of an embodiment of the present invention when writing a pen.

Figures 7A, 7B, and 7C are diagrams of the present invention for the continuous action diagram of the triangle pen pencil before the pen is clamped, when the pen is clamped, and when the pen is inserted.

Figures 8A, 8B, and 8C are the continuous motion diagrams of the present invention for the circular pen pencil before the pen is clamped, when the pen is clamped, and when the pen is inserted.

Please refer to FIGS. 1 to 5, the pen feeding device 1 of the pencil sharpener of the present invention includes a base 10, a positioning frame 20, and a counting shaft 30. The following will explain in detail:

The support 10 is arranged on the housing of the pen inlet of the pencil sharpener (the housing is conventional, so it is not shown). One side of the support 10 has a drive plate 40 and a turntable 50. The drive plate 40 can be The rolling device 91 of the pencil sharpener is driven to rotate and is linked to the turntable 50. The transmission disk 40 and the turntable 50 respectively have a connecting hole 41 and a through hole 51 for the pencil to pass through and communicate with the pen inlet. The surface of 50 has 52 friction lines.

The positioning frame 20 is combined with the support 10, and the positioning frame 20 is pivotally connected to a plurality of positioning shafts 21 facing the turntable 50.

The number rotating shaft 30 is arranged on the positioning shaft 21, and each rotating shaft 30 has a pen-holder roller 31 and a friction wheel 32. The pen-holder roller 31 is in a state surrounding the through hole 51 of the turntable 50 to face the through hole. The hole 51 rolls to pinch and advance the pencil, and the friction wheel 32 can be driven by the friction transmission energy of the turntable 50 to rotate the positioning shaft 21, the rotation shaft 30 and the pen gripping roller 31.

In one embodiment, the drive disk 40 has a plurality of tooth grooves 42 around the circumference, and one side of the turntable 50 is provided with a plurality of protruding pins 53 corresponding to the number of tooth grooves 42. The protruding pins 53 are respectively inserted into the corresponding tooth grooves 42 , When the driving disc 40 is driven to rotate by the hobbing device 91 of the pencil sharpener, the rotation disc 50 is driven to rotate by the locking action of the tooth groove 42 and the convex pin 53.

In one embodiment, when the transmission disk 40 rotates so that the protruding pin 53 is positioned at the inclined portion of the tooth groove 42, the turntable 50 not only moves toward the friction wheel 32, but also simultaneously pushes the transmission disk 40; the transmission disk 40 One side is provided with several elastic pieces 43, which are pressed against the surface of the support 10, so that when the transmission disk 40 is pressed by the turntable 50, the elastic pieces 43 are compressed to generate elastic force, which can be elastically pressed. Pushing the turntable 50 closely contacts the friction wheel 32.

In one embodiment, the rubbing pattern 52 is radial.

In one embodiment, the positioning frame 20 has a plurality of pivot holes 22, and the positioning shaft 21 can be pierced by elastic hooks and clamped in the pivot holes 22, so that the positioning shaft 21 can stay in the pivot hole 22 without falling off. The positioning frame 20 rotates upward.

In one embodiment, the positioning frame 20 has a plurality of coupling portions 23, and the coupling portions 23 can be snapped and coupled to the coupling holes 11 provided in the support 10 by means of elastic hooks.

In one embodiment, the positioning shaft 21 is provided with a positioning plate 211, the positioning plate 211 has a cut-off side, one side of the positioning plate 211 is provided with a bearing seat 212 for setting the rotating shaft 30, and the positioning frame 20 has a protrusion The edge 24 is used to make the positioning shaft 21 relatively inwardly rotate an angle, the The truncated side surface of the positioning plate 211 is stopped by the flange 24 to achieve angular positioning, so as to prevent the number rotation shaft 30 from rotating inwardly at an excessively large angle (that is, when writing a pen).

In one embodiment, the positioning frame 20 has a plurality of L-shaped protruding limiting plates 25 to stop excessive axial movement of the friction wheel 32 on the rotating shaft 30 and to make the positioning shaft 21 relatively rotate outward At one angle, the surface of the friction wheel 32 is stopped by the limiting plate 25 to achieve angular positioning, so as to avoid the relative outward rotation angle of the counting shaft 30 is too large (that is, when the pen is retracted).

In one embodiment, the friction wheel 32 is arranged on a sleeve 33, and the sleeve 33 is further arranged on the rotating shaft 30. The sleeve 33 and the rotating shaft 30 may be provided with convex keys and key grooves. In structure, the sleeve body 33 can drive the rotating shaft 30 to rotate through the engagement of the convex key and the key groove, and can also move along the axis of the rotating shaft 30. The rotating shaft 30 is provided with a stopper 34 to stop the sleeve 33 , The friction wheel 32 moves too much axially on the rotating shaft 30.

The foregoing is an introduction to the various components of the present invention and their composition methods, and then the use embodiments, features and benefits of the present invention are introduced as follows:

Please refer to Fig. 1, Fig. 6, Fig. 7A, Fig. 7B, and Fig. 7C. Examples of the use of the present invention for clamping and penetrating the triangular pen pencil 80:

When the pencil 80 is inserted into the through hole 51 of the turntable 50 through the setting frame 20, when the crank 92 is shaken to rotate the hobbing device 91, the drive plate 40 is driven by the hollow shaft 93, and is driven by the tooth groove 42 and the convex pin The blocking action of 53 drives the turntable 50 to rotate. The turntable 50 will rotate the friction wheel 32, and at the same time make the rotation shaft 30 and the pen-holder roller 31 rotate inward correspondingly, because the friction wheel 32 rotates towards the axis of the rotation shaft 30. A pushing force causes the positioning shaft 21 to rotate, and the rotating shaft 30 and the pen-holder roller 31 move inward to form an adjustable clamping mouth. The pencil 80 automatically clamps the pen, and the pen-holder roller 31 can also be automatically adjusted to ensure The center position of the pencil 80 is maintained at the hobbing center of the pencil sharpener The line makes the cutting surface around the pencil 80 even and beautiful after cutting, so that the user can hold the pen in a correct posture, conform to the pen-holding technique, and feel comfortable in holding the pen.

When the pen holder roller 31 applies the pencil 80 to automatically hold the pen and continues to rotate inward correspondingly, the pencil 80 can be pinched and pushed to the depth of the cutting taper hole of the rolling device 91 to form a smooth and smooth pen advance movement. Perform cutting.

When the pencil 80 is cut, shake the crank 92 in the reverse direction, and the drive plate 40 drives the turntable 50 to reverse. The friction wheels 32 and the pen-holder roller 31 are correspondingly rotated outward and reversed, and at the same time, the positioning shaft 21 is reversed. The rotation causes the shaft 30 and the pen-holder roller 31 to move outwards correspondingly, and the pencil 80 is no longer applied to hold and feed the pen, and the pencil 80 can exit easily and smoothly.

Please refer to Fig. 8A, Fig. 8B and Fig. 8C, the present invention uses the circular pen pencil 80 to clamp and feed the pen, its operation principle, use method and functions and the triangular pen pencil 80 use example The same, I will not repeat them here.

Based on the above, by the rotation of the friction wheel and the positioning shaft, the pen holder roller forms an adjustable mouth, which can automatically adjust the holder for pencils with different diameters and different appearance shapes (such as triangles, circles, etc.) The size of the mouth is used to clamp the pen, and to ensure that the center position of the pencil is maintained at the rolling center line of the pencil sharpener, so that the cutting surface of the circumference of the pencil after cutting is average and beautiful, and the pencil can be smooth and smooth during cutting Automatically feed the pencil, and the pencil can be easily ejected after finishing the cutting.

The above examples of this case are provided for the convenience of explanation only, and should not be used to limit the meaning of this case, that is, all the various design changes made in accordance with the scope of the listed patent applications should be included in the scope of patents of this case.

21: positioning axis

211: positioning plate

25: limit board

30: shaft

31: Clip pen roller

32: Friction wheel

33: set body

50: turntable

51: Through hole

52: Friction lines

80: pencil

Claims (8)

A pen feeding device of a pen sharpener, comprising: a seat, which is arranged on the shell of the pen inlet of the pen sharpener; one side of the support is provided with a driving disc and a turntable, and the driving disc can be used by the pen sharpener The rolling device drives and rotates and links the turntable. The drive disk and the turntable respectively have connecting holes and through holes for pencils to pass through and communicate with the pen inlet. The surface of the turntable has several friction patterns; a positioning frame , Combined with the support, the positioning frame is movably pivotally connected with a number of positioning shafts facing the turntable; a number of rotation shafts are arranged on the positioning shaft, each of the rotation shafts has a pen-holder roller and a friction wheel, wherein the pen-holder roller Presents the state of the through hole around the turntable, and is used to roll toward the through hole to pinch and advance the pencil. The friction wheel can be driven by the friction transmission energy of the turntable, so that the positioning shaft, the rotating shaft, and the pen holder roller Rotation; wherein, the friction gear is set on a set body, the set body is then set on the rotating shaft, between the sleeve body and the rotating shaft can be provided with a convex key, key groove matching structure, by the convex key and The fitting of the key groove enables the sleeve body to drive the rotation shaft to rotate, and also to move along the shaft axis. The rotation shaft is provided with a stopper to stop the sleeve body and the friction wheel from excessive axial movement on the shaft . For example, the pen feeding device of the pencil sharpener described in the first item of the scope of patent application, wherein the driving disc has a plurality of tooth grooves on the circumference, and one side of the turntable is provided with a plurality of convex pins corresponding to the plurality of tooth grooves. The pins are respectively inserted into the corresponding tooth grooves for driving the turntable to rotate by the locking action of the tooth grooves and the convex pins when the driving disk is driven to rotate by the hobbing device of the pencil sharpener. For example, the pen feeding device of the pencil sharpener described in the first item of the scope of patent application, wherein, when the driving disc rotates so that the protruding pin is positioned at the inclined portion of the tooth groove, the turntable not only moves toward the friction wheel, but also pushes simultaneously Press the transmission disc; one side of the transmission disc is provided with several elastic sheets, which are pressed against the surface of the support, so that when the transmission disc is pushed by the turntable, the elastic sheets are compressed to generate elastic force, which can The turntable is elastically pushed to closely contact the friction wheel. As described in the first item of the scope of patent application, the pen feeding device of the pen sharpener, wherein the friction pattern is radial. For example, the pen feeding device of the pencil sharpener described in the first item of the scope of patent application, wherein the positioning frame has a plurality of pivot holes, and the positioning shaft can be inserted through elastic hooks and locked in the pivot holes, The positioning shaft can rotate on the positioning frame without falling off. As described in the first item of the scope of patent application, the pen feeding device of the sharpener, wherein the positioning frame has a plurality of coupling parts, and the coupling parts can be snapped and connected to the support by means of elastic hooks. The combination hole. For example, the pen-feeding device of the pencil sharpener described in item 1 of the scope of patent application, wherein the positioning shaft is provided with a positioning plate, the positioning plate has a cut-off side, and one side of the positioning plate is provided with a bearing seat for setting the rotating shaft , And the positioning frame has a protruding edge for making the positioning shaft relatively inwardly rotated by an angle, the truncated side surface of the positioning plate is stopped by the protruding edge to achieve angular positioning. As described in the first item of the scope of patent application, the pen feeding device of the sharpener, wherein the positioning frame has a plurality of L-shaped protruding restriction plates to stop excessive axial movement of the friction wheel on the shaft And when the positioning shaft is relatively rotated outward by an angle, the surface of the friction wheel is stopped by the limiting plate to achieve angular positioning.

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