CN219339076U - Automatic pencil feeding mechanism for pencil sharpener - Google Patents
Automatic pencil feeding mechanism for pencil sharpener Download PDFInfo
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- CN219339076U CN219339076U CN202320016674.5U CN202320016674U CN219339076U CN 219339076 U CN219339076 U CN 219339076U CN 202320016674 U CN202320016674 U CN 202320016674U CN 219339076 U CN219339076 U CN 219339076U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model discloses an automatic pencil feeding mechanism of a pencil sharpener, which comprises a tooth holder and a tooth cover which are fixed together, wherein a transmission cavity is formed between the tooth holder and the tooth cover, an upper pin shaft and a lower pin shaft are arranged on the front outer side wall of the tooth holder in parallel, an upper transmission tooth and an upper friction wheel are arranged on the upper pin shaft, a lower transmission tooth and a lower friction wheel are arranged on the lower pin shaft, the upper transmission tooth is positioned at the left end position of the upper pin shaft, the lower transmission tooth is positioned at the right end position of the lower pin shaft, an external gear, an internal gear and a cam are sequentially sleeved in the transmission cavity from right to front, the external gear is provided with a front side gear ring and an internal gear ring, the front side gear ring is meshed with the upper transmission tooth and the lower transmission tooth after passing through a hole in the middle of the tooth holder, the internal gear is meshed with a small tooth difference structure in the internal gear ring, the cam part of the cam is sleeved in the internal gear, four limit posts are uniformly distributed on the inner side of the tooth cover, and limit holes corresponding to the limit posts are arranged on the outer side of the internal gear; the effect is as follows: when the pencil sharpener cuts the pencil, the pencil can automatically enter.
Description
Technical Field
The utility model relates to a pencil knife component, in particular to an automatic pencil knife feeding mechanism.
Background
The pencil sharpener is a tool for sharpening pencils quickly. The existing pencil sharpener, in particular to a hand-operated pencil sharpener or an electric mechanical pencil sharpener, needs to manually push the pencil when sharpening the pencil, realizes the entry of the pencil, and is inconvenient to operate.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an automatic pencil feeding mechanism for a pencil sharpener aiming at the defects in the prior art.
In order to achieve the above object, the present utility model adopts the following measures:
the automatic pencil feeding mechanism of the pencil sharpener comprises a tooth holder and a tooth cover which are fixed together, wherein pencil extending holes corresponding to the positions are formed in the middle positions of the tooth holder and the tooth cover, a transmission cavity is formed between the tooth holder and the tooth cover, an upper pin shaft and a lower pin shaft are arranged on the front outer side wall of the tooth holder in parallel, an upper transmission tooth and an upper friction wheel are arranged on the upper pin shaft, a lower transmission tooth and a lower friction wheel are arranged on the lower pin shaft, the upper transmission tooth is positioned at the left end position of the upper pin shaft, the lower transmission tooth is positioned at the right end position of the lower pin shaft, a distance for a pencil to pass through is reserved between the upper friction wheel and the lower friction wheel, an external gear, an internal gear and a cam are sleeved in the transmission cavity in sequence from right to front to back, the central positions of the external gear, the internal gear and the cam are all provided with pencil extending holes, the front side gear is meshed with the internal gear through the holes in the middle of the tooth holder, the front side gear is meshed with the upper transmission tooth and the lower transmission tooth, the internal gear is meshed with the internal gear, the small tooth difference structure is meshed with the internal gear, the cam part of the cam is sleeved in the internal gear, the internal gear is provided with a limit post with four limiting posts which are uniformly distributed at the inner side diameter of the corresponding holes, and the diameter of the limit posts are arranged at the limiting posts of the four limiting positions of the diameter limiting posts are arranged at the positions of the corresponding to the diameter limiting ends of the inner limiting posts;
two groups of shaft holes for installing an upper pin shaft and a lower pin shaft are integrally formed in the front outer side wall of the tooth holder, and one shaft hole is set to be an open shaft hole in each group of shaft holes;
the tooth cover is characterized in that the two sides of the tooth cover are integrally formed and provided with an assembling fixed hook for hooking onto a tooth seat, and the tooth seat is provided with a hooking groove for matching with the assembling fixed hook;
the end part of the power input end is provided with a driving hole;
mounting holes corresponding to the positions are formed in the tooth holder and the tooth cover;
the inner gear is designed to be teeth, and the inner gear ring is designed to be teeth.
The utility model has the beneficial effects that: the pencil sharpener has the advantages that the pencil sharpener is novel in structure and good in transmission effect, when the pencil sharpener sharpens the pencil, the pencil sharpener is more convenient to sharpen the pencil, the pencil feeding speed is reduced, excessive friction of the pencil is reduced, and therefore the service life of the pencil feeding structure is prolonged.
Drawings
Fig. 1 is a schematic view of a side exploded structure of the present utility model.
Fig. 2 is a schematic view of another exploded structure of the present utility model.
Fig. 3 is a schematic view of an external structure of one side of the present utility model.
Fig. 4 is a schematic view of the external structure of the other side of the present utility model.
Detailed Description
The automatic pencil feeding mechanism for the pencil sharpener comprises a tooth holder 1 and a tooth cover 2 which are fixed together, wherein pencil extending holes corresponding to the middle positions of the tooth holder 1 and the tooth cover 2 are formed in the middle positions of the tooth holder 1 and the tooth cover 2, a transmission cavity is formed between the tooth holder 1 and the tooth cover 2, an upper pin shaft 3 and a lower pin shaft 4 are arranged on the front outer side wall of the tooth holder 1 in parallel, an upper transmission tooth 3-1 and an upper friction wheel 3-2 are arranged on the upper pin shaft 3, a lower transmission tooth 4-1 and a lower friction wheel 4-2 are arranged on the lower pin shaft 4, the upper transmission tooth 3-1 is positioned at the left end position of the upper pin shaft 3, the lower transmission tooth 4-1 is positioned at the right end position of the lower pin shaft 4, a distance for a pencil 5 to pass through is reserved between the upper friction wheel 3-2 and the lower friction wheel 4-2, when the pencil 5 passes through, the pencil is in friction contact with the upper friction wheel 3-2 and the lower friction wheel 4-2, an external gear 6, an internal gear 7 and a cam 8 are sequentially sleeved in the transmission cavity from right to front to back, pencil extending holes are formed in the central positions of the external gear 6, the internal gear 7 and the cam 8, a front side surface gear ring 6-1 and an internal gear ring 6-2 are arranged on the external gear 6, the front side surface gear ring 6-1 penetrates through the holes in the middle of the tooth holder 1 and then is meshed with the upper transmission teeth 3-1 and the lower transmission teeth 4-1, the internal gear 7 is meshed in the internal gear ring 6-2 with a small tooth difference structure, a cam part of the cam 8 is sleeved in the internal gear 7, a power input end 8-1 of the cam 8 is exposed out of the central hole of the tooth cover 2, four limit posts 2-9 are uniformly distributed on the inner side of the tooth cover 2, limit holes 7-9 corresponding to the limit posts 2-9 are formed on the outer side of the internal gear 7, the aperture of the limiting hole 7-9 is twice the diameter of the limiting column 2-9.
As shown in fig. 1, 2, 3 and 4, the automatic pencil feeding mechanism of the mechanism is installed in a hand pencil sharpener or an electric automatic pencil sharpener. The power input end 8-1 of the cam 8 is connected to the power output end of the hand pencil sharpener or the power output end of the electric propelling pencil sharpener in a transmission way. The driving cam 8 rotates, the cam part of the cam 8 drives the inner gear 7 to realize planetary gear transmission with small tooth difference in the inner gear ring 6-2 of the outer gear 6, the outer gear 6 is driven to rotate, and when the outer gear 6 rotates, the front side gear ring 6-1 on the outer gear 6 drives the upper transmission gear 3-1 and the lower transmission gear 4-1 to rotate. Referring to fig. 1 specifically, the rotation and transmission directions of the embodiment are described, when the external gear 6 rotates anticlockwise, the front side gear ring 6-1 of the external gear 6 drives the upper transmission gear 3-1 to rotate downwards and the lower transmission gear 4-1 to rotate upwards, the upper transmission gear 3-1 drives the upper friction wheel 3-2 to rotate downwards, the lower transmission gear 4-1 drives the lower friction wheel 4-2 to rotate upwards, and the pencil 5 clamped between the upper friction wheel 3-2 and the lower friction wheel 4-2 can be pushed to one end of the gear cover 2 by the upper friction wheel 3-2 and the lower friction wheel 4-2, so that automatic pencil feeding during pencil sharpening is realized.
The front outer side wall of the tooth holder 1 is integrally formed with two groups of shaft holes for installing the upper pin shaft 3 and the lower pin shaft 4, and one shaft hole is set as an open shaft hole in each group of shaft holes. The structure facilitates the installation of the upper pin shaft 3 and the lower pin shaft 4. When in installation, one end of the upper pin shaft 3 is inserted into the shaft hole, and the other end is clamped into the open shaft hole.
The tooth cover 2 is characterized in that the two sides of the tooth cover 2 are integrally formed and provided with an assembling fixed hook 2-1 for hooking the tooth seat 1, and the tooth seat 1 is provided with a hooking groove 1-1 for matching with the assembling fixed hook 2-1. The rapid assembly between the tooth cover 2 and the tooth holder 1 is convenient.
The end part of the power input end 8-1 is provided with a driving hole, usually a square hole, which is convenient to be in transmission connection with a power output mechanism.
And mounting holes corresponding to the positions are formed in the tooth holder 1 and the tooth cover 2. The pencil sharpener is convenient to install the pencil sharpener.
The inner gear 7 is designed to be 19 teeth, and the inner gear ring 6-2 is designed to be 20 teeth. The planetary gear transmission structure with small tooth difference is convenient and quick to realize. By the structure, the speed is reduced, the pen feeding speed is reduced, excessive friction of the pencil is reduced, and the service life of the pen feeding structure is prolonged.
Claims (6)
1. The utility model provides an automatic pencil sharpener mechanism, includes fixed toothholder (1) and tooth lid (2) together, its characterized in that: the middle positions of the tooth holder (1) and the tooth cover (2) are provided with pencil extending holes corresponding to the positions, a transmission cavity is formed between the tooth holder (1) and the tooth cover (2), an upper pin shaft (3) and a lower pin shaft (4) are arranged on the front outer side wall of the tooth holder (1) in parallel, an upper transmission tooth (3-1) and an upper friction wheel (3-2) are arranged on the upper pin shaft (3), a lower transmission tooth (4-1) and a lower friction wheel (4-2) are arranged on the lower pin shaft (4), the upper transmission tooth (3-1) is positioned at the left end position of the upper pin shaft (3), the lower transmission tooth (4-1) is positioned at the right end position of the lower pin shaft (4), a distance for a pencil (5) to pass through is reserved between the upper friction wheel (3-2) and the lower friction wheel (4-2), an outer gear (6), an inner gear (7) and an outer gear (7) are sleeved in the transmission cavity in sequence from front to back, an inner gear (6), an outer gear (7) and an outer gear (6) are sleeved on the outer gear (6), a cam (6-6) and a center ring (6) are arranged on the inner gear (6) and the inner gear (6) are arranged on the front side surface of the inner gear (6), the front side gear ring (6-1) penetrates through a hole in the middle of the gear seat (1) and then is meshed and connected to the upper transmission gear (3-1) and the lower transmission gear (4-1), the internal gear (7) is meshed in the internal gear ring (6-2) in a small tooth difference structure, a cam part of the cam (8) is sleeved in the internal gear (7), a power input end (8-1) of the cam (8) is exposed out of a central hole of the gear cover (2), four limit posts (2-9) are uniformly distributed on the inner side of the gear cover (2), limit holes (7-9) corresponding to the limit posts (2-9) are formed in the outer side of the internal gear (7), and the aperture of each limit hole (7-9) is twice the diameter of each limit post (2-9).
2. The automatic pencil sharpener of claim 1 wherein: the front outer side wall of the tooth holder (1) is integrally formed with two groups of shaft holes for installing the upper pin shaft (3) and the lower pin shaft (4), and one shaft hole is set as an open shaft hole in each group of shaft holes.
3. A pencil sharpener automatic pencil feeding mechanism as in claim 1 or 2, wherein: the tooth cover is characterized in that the two sides of the tooth cover (2) are integrally formed and provided with assembling fixed hooks (2-1) for hooking the tooth seat (1), and the tooth seat (1) is provided with hooking grooves (1-1) for matching with the assembling fixed hooks (2-1).
4. A pencil sharpener automatic pencil feed mechanism as in claim 3, wherein: the end part of the power input end (8-1) is provided with a driving hole.
5. The automatic pencil sharpener of claim 4 wherein: and mounting holes corresponding to the positions are formed in the tooth holder (1) and the tooth cover (2).
6. The automatic pencil sharpener of claim 1 wherein: the internal gear (7) is designed to be 19 teeth, and the annular gear (6-2) is designed to be 20 teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320016674.5U CN219339076U (en) | 2023-01-03 | 2023-01-03 | Automatic pencil feeding mechanism for pencil sharpener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320016674.5U CN219339076U (en) | 2023-01-03 | 2023-01-03 | Automatic pencil feeding mechanism for pencil sharpener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219339076U true CN219339076U (en) | 2023-07-14 |
Family
ID=87097533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320016674.5U Active CN219339076U (en) | 2023-01-03 | 2023-01-03 | Automatic pencil feeding mechanism for pencil sharpener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219339076U (en) |
-
2023
- 2023-01-03 CN CN202320016674.5U patent/CN219339076U/en active Active
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