CN219903881U

CN219903881U - Manual pencil sharpener

Info

Publication number: CN219903881U
Application number: CN202320323421.2U
Authority: CN
Inventors: 陈刚
Original assignee: Deli Group Co Ltd
Current assignee: Deli Group Co Ltd
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-10-27
Anticipated expiration: 2033-02-27

Abstract

The manual pencil sharpener includes one pencil feeding box with two rubber roller assemblies and one driving assembly inside the pencil feeding box; the two rubber roller assemblies are parallel to each other and can be radially and slidably arranged in the box body; the transmission assembly comprises a driving wheel (11), a driven wheel (12) and a driven shaft (13); the driving wheel (11) is rotationally connected to the box body, and the driving wheel (11) is coaxially connected with a hob component of the pencil sharpening mechanism; the driven shaft (13) is rotationally connected to the box body, the driven shaft (13) can axially slide, and the driven wheel (12) is circumferentially limited and axially slidably sleeved outside one end of the driven shaft (13); the driving wheel (11) is in transmission connection with the driven wheel (12) through a first gear structure, and the driven shaft (13) is in transmission connection with one of the rubber roller assemblies through a second gear structure. The manual pencil sharpener can be inserted and used at any time, and can not leave a stamp on the surface of a pencil, so that the use experience of a user is effectively improved.

Description

Manual pencil sharpener

Technical Field

The utility model relates to the technical field of pencil sharpener, in particular to a manual pencil sharpener.

Background

The pencil is used by low-grade students in China, the pencil is naturally separated from a pencil sharpener, the pencil sharpener is various in types, and the hand-operated pencil sharpener which is matched with a spiral hob and a crank is adopted. The hand pencil sharpener in the prior art comprises a shell, a pencil clamping mechanism, a pencil sharpening mechanism and a pencil scrap box, wherein the pencil clamping mechanism is used for clamping a pencil, the pencil sharpening mechanism is used for sharpening a pencil point, and the pencil scrap box is used for containing pencil scraps. The hand-operated pencil sharpener commonly used in the market at present generally adopts a pull clip mode, and when sharpening, the pencil feeding component is pulled out firstly, and the pencil clamping component is pressed to open the pencil clamping channel for use, for example, the pencil sharpener disclosed in the utility model with the patent number of 201420146383.9; the hand-operated pencil sharpener cannot be inserted and used at any time, a plurality of ink marks can be clamped on the surface of a pencil by the pencil clamping component, the appearance of the pencil is affected, and the use experience of a user is poor.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide the manual pencil sharpener, which can be inserted and used at any time, and can not leave a stamp on the surface of a pencil, thereby effectively improving the use experience of a user.

The technical scheme is that the manual pencil sharpener comprises a pencil feeding box and a pencil sharpening mechanism, wherein the pencil feeding box comprises a box body, and two rubber roller assemblies and a transmission assembly are arranged in the box body; the two rubber roller assemblies are parallel to each other and can be radially and slidably arranged in the box body; the transmission assembly comprises a driving wheel, a driven wheel and a driven shaft; the driving wheel is rotationally connected to the box body and is coaxially connected with the hob component of the pencil sharpening mechanism; the driven shaft is rotationally connected to the box body and can axially slide, and the driven wheel is circumferentially limited and axially slidably sleeved outside one end of the driven shaft; the driving wheel is in transmission connection with the driven wheel through a first gear structure, and the driven shaft is in transmission connection with one of the rubber roller assemblies through a second gear structure.

After adopting above structure, the manual pencil sharpener of the utility model has the following advantages compared with the prior art:

because the rubber roller assemblies of the manual pencil sharpener are parallel to each other and can be radially and slidably arranged in the box body, the diameters of pencils with different gears are strived for, and the pencil clamping space between the two rubber roller assemblies can be adjusted after the two rubber roller assemblies are pressed. The driven shaft is rotationally connected to the box body and can axially slide, and the driven wheel is circumferentially limited and axially slidably sleeved outside one end of the driven shaft; the driven shaft and the driven wheel can axially and relatively slide, so that the driven wheel cannot be driven to axially move when the driven shaft axially moves, and the driven wheel cannot be separated from the connection with the driving wheel. When the manual pencil sharpener works, the hob component of the pencil sharpening mechanism drives the driving wheel to rotate, the driving wheel drives the driven wheel to rotate, the driven wheel drives the driven shaft to rotate, and one of the rubber roller components is further driven to rotate, so that the pencil feeding and withdrawing functions can be realized. This patent has changed the manual pencil sharpener's of prior art and has drawn the clamp structure, makes the pencil can be along with inserting and using, and it is very convenient to use, also can not leave the seal at the surface of pencil at the in-process of using, effectively promotes user and uses experience and feel.

As an improvement, the driven wheel is arranged on one side of the driving wheel, a gear ring is arranged at the edge of the end surface of the driving wheel, which is close to one side of the driven wheel, and the gear ring comprises a plurality of helical teeth which are annularly arranged; the driven wheel is a gear, and is meshed with the gear ring; the gear ring and the driven wheel form the first gear structure. After adopting this kind of structure, first gear structure's simple structure receives its effect, and the action wheel can effectively drive from the driving wheel rotation.

As an improvement, a worm is arranged on the driven shaft, a connecting gear is arranged at the end part of a roller shaft of one rubber roller assembly, and the connecting gear is meshed with the worm; the connecting gear and the worm form the second gear structure. After adopting this kind of structure, the simple structure of second gear structure, by its effect, the driven shaft can effectively drive the connecting gear rotation.

As an improvement, the middle part of the driven wheel is provided with a through hole, the inner wall of the driven wheel is provided with a positioning rib, and the end part of the driven wheel is provided with a chute; the driven wheel is sleeved outside the end part of the driven shaft, and the positioning rib is in sliding fit in the sliding groove. After the structure is adopted, the driven wheel and the driven shaft are limited by the positioning ribs and the sliding grooves in the circumferential direction, and the driven wheel can rotate to drive the driven shaft to rotate. When the driven shaft moves circumferentially, the positioning ribs and the sliding grooves can slide relatively, the structure is simple, and the assembly is convenient.

As an improvement, a limiting convex ring is arranged on the side wall of the driven shaft, a first elastic piece is arranged between the driven wheel and the limiting convex ring, and the first elastic piece provides thrust for the driven wheel to move in the direction away from the limiting convex ring. After the structure is adopted, the structure is more stable to assemble under the action of the first elastic piece.

As an improvement, a positioning cover is arranged in the box body, the positioning cover is in sliding fit with the box body, and the positioning cover covers the two rubber roller assemblies; the two side walls of the positioning cover are respectively provided with a track matched with the end parts of the roller shafts of the two rubber roller assemblies, and the two ends of the roller shafts of the two rubber roller assemblies are respectively matched in the corresponding tracks; the positioning cover can move back and forth to drive the two rubber roller assemblies to move in opposite directions or in opposite directions, so that the two rubber roller assemblies can synchronously move. After the structure is adopted, the positioning cover is connected with the roller shafts of the two rubber roller assemblies through the rails, so that the roller shafts of the two rubber roller assemblies can synchronously move, the structural design is more reasonable, and the inserted pencil can be centrally positioned.

As an improvement, a second elastic piece is arranged between the positioning cover and the inner wall of the box body, and the second elastic piece pushes the positioning cover to move towards the direction close to the rubber roller assembly. After adopting this kind of structure, simple structure, reasonable in design.

As an improvement, the inner wall of the box body is provided with a guide post, the side wall of the positioning cover is provided with a guide groove, and the guide post is in sliding fit with the guide groove. After the structure is adopted, the guide post and the guide groove structure can guide the sliding direction of the positioning cover.

As an improvement, the rail is a rail groove, the inlet end of the rail groove is a straight groove, and the straight groove is vertical to the roller shaft of the corresponding rubber roller assembly; the track groove is positioned at the inner side of the straight groove and is provided with a chute, the chute is communicated with the straight groove, and when the roller shafts of the two rubber roller assemblies are gradually close to the bottom of the chute, the roller shafts of the two rubber roller assemblies are also gradually close to each other. After adopting this kind of structure, simple structure, center location effect is better.

Drawings

Fig. 1 is a schematic perspective view of a manual pencil sharpener according to the present utility model.

Fig. 2 is an exploded view of the manual pencil sharpener of the present utility model.

Fig. 3 is a schematic perspective view of a pencil feeding box of the manual pencil sharpener of the present utility model.

Fig. 4 is an exploded view of a pencil feeding case of the manual pencil sharpener of the present utility model.

Fig. 5 is a schematic view of a part of an exploded structure of a pencil feeding box of the manual pencil sharpener of the present utility model.

Fig. 6 is a schematic diagram showing an assembled structure of a driven shaft and a driven wheel of a pencil feeding box of the manual pencil sharpener of the present utility model.

Fig. 7 is an exploded view of the driven shaft and the driven wheel of the pencil feeding box of the manual pencil sharpener of the present utility model.

The figure shows: 1. the pen holder comprises a shell, 101, a mounting cavity, 102, a clamping groove, 2, a handle, 3, a chip box, 4, a box body, 5, a box cover, 6, a panel, 601, a buckle, 7, a shaft hole, 8, a roller, 9, a roller shaft, 10, a connecting gear, 11, a driving wheel, 1101, a rotating shaft, 1102, a matching hole, 12, a driven wheel, 1201, a positioning rib, 1202, a gear ring, 1203, a helical tooth, 13, a driven shaft, 1301, a chute, 1302, a limiting convex ring, 1303, a worm, 14, a connecting hole, 15, a first return spring, 16, a positioning cover, 1601, a guide groove, 1602, a straight groove, 1603, a chute, 17, a guide post, 18, a second return spring, 19 and a pen feeding channel.

Description of the embodiments

For a better understanding of the utility model, various aspects of the utility model will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the utility model and is not intended to limit the scope of the utility model in any way. Like reference numerals refer to like elements throughout the specification.

In the drawings, the thickness, size and shape of the object have been slightly exaggerated for convenience of explanation. The figures are merely examples and are not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including" and/or "having," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

As shown in fig. 1 to 7, the utility model discloses a manual pencil sharpener, which comprises a housing 1, a pencil feeding box and a pencil sharpening mechanism. The pencil feeding box and the pencil sharpening mechanism are both arranged in the shell 1, and the pencil sharpening mechanism is connected with the pencil feeding box. The shell 1 is provided with a handle 2, and the handle 2 is connected with the pencil sharpening mechanism. The shell 1 is provided with a chip box 3, and the chip box 3 is positioned below the pencil sharpening mechanism. The pencil sharpener can be started by rotating the handle 2, and pencil scraps cut by the pencil sharpener can be driven to enter the pencil feeding box to feed by the pencil sharpener, and the pencil scraps cut by the pencil sharpener fall into the pencil scraps box 3.

The pen feeding box comprises a box body, wherein two rubber roller assemblies and a transmission assembly are arranged in the box body. The box body comprises a box body 4 with an opening, a box cover 5 and a panel 6, wherein the box cover 5 is connected to the opening of the box body 4, and an accommodating space is formed between the box body 4 and the box cover 5. The panel 6 is fixedly connected to the end surface of the case cover 5 away from the case body 4. The pen feeding device is characterized in that a mounting cavity 101 matched with the pen feeding box is formed in the shell 1, and the box body is inserted into the mounting cavity 101. The side wall of the panel 6 is provided with a plurality of buckles 601, the inner wall of the shell 1 is provided with clamping grooves 102 matched with the buckles 601, and the buckles 601 are buckled in the clamping grooves 102 in a one-to-one correspondence manner.

Two rubber roller assemblies are parallel to each other and can be radially and slidably arranged in the box body, namely, the junction of the box body 4 and the box cover 5 forms a shaft hole 7, the shaft holes 7 are four, and two opposite side walls of the box body are respectively provided with two. The rubber roller assembly comprises a roller 8 and a roller shaft 9, the roller is arranged in the middle of the roller shaft 9, and one end of the roller shaft 9 is provided with a connecting gear 10. Two ends of a roller shaft 9 of the two rubber roller assemblies are respectively matched in shaft holes 7 at two sides, the shaft holes 7 are waist-shaped, and the end parts of the roller shafts 9 can slide in the shaft holes 7. The space formed between the two rubber roller assemblies can be used for the pencil to pass through.

The transmission assembly comprises a driving wheel 11, a driven wheel 12 and a driven shaft 13. The middle part of the driving wheel 11 is provided with a rotating shaft 1101, and the rotating shaft 1101 is provided with a matching hole 1102 matched with a hob component of the pencil sharpening mechanism. The driving wheel 11 is rotatably connected to the box body 4, the end part of the hob component of the pencil sharpening mechanism is inserted into the matching hole 1102, and the hob component can drive the driving wheel 11 to rotate. A pencil can be inserted into the hob assembly through the mating hole 1102.

The driven shaft 13 is rotatably connected to the box body, connecting holes 14 are respectively formed in the other two opposite side walls of the box body, two ends of the driven shaft 13 are rotatably connected to the connecting holes 14, and the driven shaft 13 can axially slide. The driven wheel 12 is circumferentially limited and axially slidably sleeved outside one end of the driven shaft 13, namely, a through hole is formed in the middle of the driven wheel 12, positioning ribs 1201 are arranged on the inner wall of the driven wheel 12, and a sliding groove 1301 is formed in the end of the driven shaft 13. The driven wheel 12 is sleeved outside the end part of the driven shaft 13, and the positioning rib 1201 is in sliding fit in the sliding groove 1301. The side wall of the driven shaft 13 is provided with a limiting convex ring 1302, a first elastic piece is arranged between the driven wheel 12 and the limiting convex ring 1302, the first elastic piece pushes the driven wheel 12 to move away from the limiting convex ring 1302, one side of the driven wheel 12 away from the limiting convex ring 1302 is propped against the side wall of the box body, and the first elastic piece is a first return spring 15.

The driven wheel 12 is arranged at one side of the driving wheel 11, a gear ring 1202 is arranged at the edge of the end surface of the driving wheel 11 close to one side of the driven wheel 12, and the gear ring 1202 comprises a plurality of helical teeth 1203 which are annularly arranged. The driven wheel 12 is a gear, and the driven wheel 12 is meshed with the gear ring 1202. The gear ring 1202 forms a first gear arrangement with the driven wheel 12. The driven shaft 13 is provided with a worm 1303, and a connecting gear 10 of a roller shaft 9 of one rubber roller assembly is meshed with the worm 1303. The connecting gear 10 and the worm 1303 form a second gear structure.

The box body is internally provided with a positioning cover 16, the positioning cover 16 is in sliding fit with the box body, and the positioning cover 16 covers the two rubber roller assemblies. The box in be equipped with guide post 17, the one end of guide post 17 connect on the inner wall of box body 4, the lateral wall of locating cover 16 on be equipped with guide slot 1601, guide post 17 sliding fit be in guide slot 1601 in, this embodiment, guide post 17 be equipped with many, rather than corresponding, guide slot 1601 also be equipped with a plurality ofly, many guide post 17 one-to-one fit in a plurality of guide slots 1601.

The two side walls of the positioning cover 16 are respectively provided with a track matched with the end parts of the roller shafts 9 of the two rubber roller assemblies, and the two ends of the roller shafts 9 of the two rubber roller assemblies are respectively matched in the corresponding tracks. The track is a track groove, the inlet end of the track groove is a straight groove 1602, and the straight groove 1602 is vertical to the roller shaft 9 of the corresponding rubber roller assembly. The track groove is positioned at the inner side of the straight groove 1602 and is a chute 1603, the chute 1603 is communicated with the straight groove 1602, and when the roller shafts 9 of the two rubber roller assemblies gradually approach the bottom of the chute 1603, the roller shafts 9 of the two rubber roller assemblies gradually approach each other. The positioning cover 16 can move back and forth to drive the two rubber roller assemblies to move in opposite directions or in opposite directions, so that the two rubber roller assemblies can synchronously move. A second elastic member is arranged between the positioning cover 16 and the inner wall of the case cover 5, the second elastic member provides a pushing force for the positioning cover 16 to move towards the direction close to the rubber roller assembly, and the second elastic member is a second return spring 18. A positioning column is arranged on the outer side wall of the positioning cover 16, and one end of the second return spring 18 is sleeved outside the positioning column; the inner wall of the box cover 5 is provided with a positioning groove matched with the other end of the second return spring 18, and the other end of the second return spring 18 is embedded in the positioning groove.

The middle part of the panel 6, the middle part of the case cover 5 and the middle part of the positioning cover 16 are provided with central through holes, and the central through holes are pen inlet channels 19.

When the manual pencil sharpener disclosed by the utility model is used, the pen point of the pencil is inserted into the pencil channel 19, and the pencil then enters between the two rubber roller assemblies. If the diameter of the pencil is larger than the distance between the two rubber roller assemblies, the two rubber roller assemblies are pushed to move radially outwards, and under the action of the positioning cover 16, the two rubber roller assemblies move radially outwards synchronously. Then, the handle 2 is rotated to start the roller assemblies to rotate, the roller assemblies drive the driving wheel 11 to rotate, the driving wheel 11 drives the driven wheel 12 to rotate, the driven wheel 12 drives the driven shaft 13 to rotate, the driven shaft 13 drives one of the rubber roller assemblies to rotate, and at the moment, automatic pen feeding can be achieved. After the pencil is cut, the pencil can be automatically withdrawn by reversely rotating the handle 2. When the pencil exits from the pencil inlet channel 19, no pressure is generated on the two rubber roller assemblies, and the positioning cover 16 and the two rubber roller assemblies are returned to the initial positions under the action of the second return springs 18.

The present utility model is not limited to the above-mentioned preferred embodiments, and any person who can obtain other various products under the teaching of the present utility model can make any changes in shape or structure, and all the technical solutions that are the same or similar to the present utility model fall within the scope of the present utility model.

Claims

1. The manual pencil sharpener comprises a pencil feeding box and a pencil sharpening mechanism, wherein the pencil feeding box comprises a box body, and two rubber roller assemblies and a transmission assembly are arranged in the box body; the method is characterized in that: the two rubber roller assemblies are parallel to each other and can be radially and slidably arranged in the box body; the transmission assembly comprises a driving wheel (11), a driven wheel (12) and a driven shaft (13); the driving wheel (11) is rotationally connected to the box body, and the driving wheel (11) is coaxially connected with the hob component of the pencil sharpening mechanism; the driven shaft (13) is rotationally connected to the box body, the driven shaft (13) can axially slide, and the driven wheel (12) is circumferentially limited and axially slidably sleeved outside one end of the driven shaft (13); the driving wheel (11) is in transmission connection with the driven wheel (12) through a first gear structure, and the driven shaft (13) is in transmission connection with one of the rubber roller assemblies through a second gear structure.

2. The manual pencil sharpener of claim 1, wherein: the driven wheel (12) is arranged on one side of the driving wheel (11), a gear ring (1202) is arranged at the edge of the end surface of the driving wheel (11) close to one side of the driven wheel (12), and the gear ring (1202) comprises a plurality of helical teeth (1203) which are annularly arranged; the driven wheel (12) is a gear, and the driven wheel (12) is meshed with the gear ring (1202); the gear ring (1202) and the driven wheel (12) form the first gear structure.

3. The manual pencil sharpener of claim 1, wherein: a worm (1303) is arranged on the driven shaft (13), a connecting gear (10) is arranged at the end part of a roller shaft of one rubber roller assembly, and the connecting gear (10) is meshed with the worm (1303); the connecting gear (10) and the worm (1303) form the second gear structure.

4. The manual pencil sharpener of claim 1, wherein: the middle part of the driven wheel (12) is provided with a through hole, the inner wall of the driven wheel (12) is provided with a positioning rib (1201), and the end part of the driven wheel (13) is provided with a sliding groove (1301); the driven wheel (12) is sleeved outside the end part of the driven shaft (13) and the positioning rib (1201) is in sliding fit in the sliding groove (1301).

5. The manual pencil sharpener of claim 4, wherein: the side wall of the driven shaft (13) is provided with a limiting convex ring (1302), a first elastic piece is arranged between the driven wheel (12) and the limiting convex ring (1302), and the first elastic piece gives the driven wheel (12) a thrust force moving in the direction away from the limiting convex ring (1302).

6. The manual pencil sharpener of claim 1, wherein: a positioning cover (16) is arranged in the box body, the positioning cover (16) is in sliding fit with the box body, and the positioning cover (16) covers the two rubber roller assemblies; two side walls of the positioning cover (16) are respectively provided with a track matched with the end parts of the roller shafts of the two rubber roller assemblies, and two ends of the roller shafts of the two rubber roller assemblies are respectively matched in the corresponding tracks; the positioning cover (16) can move back and forth to drive the two rubber roller assemblies to move in opposite directions or in opposite directions, so that the two rubber roller assemblies can synchronously move.

7. The manual pencil sharpener of claim 6, wherein: a second elastic piece is arranged between the positioning cover (16) and the inner wall of the box body, and the second elastic piece pushes the positioning cover (16) to move towards the direction close to the rubber roller assembly.

8. The manual pencil sharpener of claim 7, wherein: the inner wall of the box body is provided with a guide post (17), the side wall of the positioning cover (16) is provided with a guide groove (1601), and the guide post (17) is in sliding fit with the guide groove (1601).

9. The manual pencil sharpener of claim 6, wherein: the rail is a rail groove, the inlet end of the rail groove is a straight groove (1602), and the straight groove (1602) is vertical to the roller shaft of the corresponding rubber roller assembly; the track groove is located inside the straight groove (1602) and is provided with a chute (1603), the chute (1603) is communicated with the straight groove (1602), and when the roller shafts of the two rubber roller assemblies are gradually close to the bottom of the chute (1603), the roller shafts of the two rubber roller assemblies are also gradually close to each other.