CN210591162U

CN210591162U - Gear transmission mechanism of pencil sharpener

Info

Publication number: CN210591162U
Application number: CN201921241898.6U
Authority: CN
Inventors: 郑崇廷; 曾凡碧
Original assignee: Ningbo Tiantian Stationery Co ltd
Current assignee: Ningbo Tiantian Stationery Co ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-05-22
Anticipated expiration: 2029-08-01

Abstract

The utility model discloses a gear drive of ware cuts, establish the casing of mounting bracket in including, the gear assembly be connected with the motor and have the hobbing cutter, hold the knife rest in a storehouse, the knife rest bottom is provided with the round teeth of a cogwheel, and the knife rest passes through the teeth of a cogwheel and meshes with drive gear, and the drive gear is established on the mounting bracket and is connected with the gear assembly, sets up first bearing between drive gear and the mounting bracket. The pencil sharpener is optimized in internal structure, high in precision positioning, high in motion smoothness of the transmission assembly and capable of reducing the fit clearance.

Description

Gear transmission mechanism of pencil sharpener

Technical Field

The utility model belongs to the technical field of daily stationery and specifically relates to a gear drive of ware cuts.

Background

The pencil sharpener can conveniently and quickly sharpen a pencil and is safe and sanitary, so the pencil sharpener is widely applied to offices and families. The existing pencil sharpener comprises a shell, a hob, a tool rest and other parts. When the pencil is sharpened, the pencil is inserted into the tool rest, then the hob is driven to rotate the hob so as to cut the pencil, and the cut pencil has a sharper pencil point.

At present, the electric pencil sharpener cutter in the prior art is driven by a gear ring and a gear, the gear ring is fixed on a shell, the gear is connected on a hob, the gear is coaxial with the hob, and the gear ring is meshed with the gear. Therefore, when the motor drives the cutter frame to rotate, the gear rolls in the gear ring, so that the cutter is driven to rotate. In the working process of designing the electric pencil sharpener, the inventor finds that the motion fluency of the transmission assembly in the electric pencil sharpener is not high, and a gap exists in matching.

In view of this, the present invention provides a gear transmission mechanism of a pencil sharpener, which is developed by the designers for further research and development of the aforementioned problems and by means of many years of research and development and manufacturing experience in the related industries, so as to improve the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a gear drive who cuts a ware is provided, optimizes and cuts a ware inner structure, and high accuracy location, drive assembly motion smoothness degree is high, reduces the complex clearance.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a gear drive of ware cuts, establishes the casing of mounting bracket in including, the gear assembly be connected with the motor and have the hobbing cutter, hold the knife rest in a storehouse, knife rest bottom be provided with the round teeth of a cogwheel, the knife rest pass through the teeth of a cogwheel and drive gear engagement, the drive gear bear and establish on the mounting bracket and be connected with the gear assembly, drive gear with the mounting bracket between set up first bearing.

The utility model discloses further preferred scheme: the mounting bracket periphery be connected to shells inner wall, the center of mounting bracket leave the through-hole that supplies drive gear to pass, first bearing install at the through-hole inner wall, and first bearing is located between through-hole and the drive gear.

The utility model discloses further preferred scheme: the gear assembly comprises a first gear, the first gear is sleeved outside the tubular part, the driving gear is fixed to the top of the tubular part, and the driving gear rotates to drive the tubular part to rotate.

The utility model discloses further preferred scheme: the driving gear is a conical gear, the bottom surface of the tool rest is a conical surface matched with the driving gear in structure, and the gear teeth are positioned on the conical surface.

The utility model discloses further preferred scheme: the pen container is characterized in that an upper frame piece is arranged at the top of the shell, the top of the pen container penetrates through the upper frame piece, and a second bearing is arranged between the outer wall surface of the pen container and the upper frame piece.

The utility model discloses further preferred scheme: the top of the pen containing bin is of a circular tubular structure, the second bearing is sleeved outside the top of the pen containing bin, and the second bearing is arranged on the inner wall surface of the upper frame piece.

Compared with the prior art, the utility model has the advantages of set up drive gear and go to connect gear assembly and knife rest. The driving gear is located the below of knife rest to install in the mounting bracket, set up first bearing between driving gear and the mounting bracket. The utility model relates to a first bearing for the frictional force that drive gear received in rotatory working process is less. And set up first bearing on the mounting bracket, its positioning accuracy is higher. The utility model discloses set up first bearing between mounting bracket and drive gear, reduce the clearance between mounting bracket and the drive gear. And the structure is positioned below the knife rest, so that the pencil chips can be prevented from falling off, and the damage to structures such as a gear assembly at the bottom of the pencil sharpener can be avoided.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

Fig. 1 is a first schematic structural diagram of the present invention;

fig. 2 is a schematic structural diagram of the present invention.

Detailed Description

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

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 2: the utility model provides a gear drive of ware cuts, establishes casing 1 of mounting bracket 8 in including, the gear assembly be connected with motor 2 and have hobbing cutter 3, hold the knife rest 5 of a

storehouse

4, 5 bottoms of knife rest are provided with round teeth of a cogwheel 6, and knife rest 5 passes through teeth of a cogwheel 6 and drive gear 7 meshing, and drive gear 7 erects on mounting bracket 8 and is connected with the gear assembly, sets up first bearing 9 between drive gear 7 and the mounting bracket 8.

The periphery of the mounting frame 8 is connected to the inner wall of the shell 1, a through hole for the driving gear 7 to pass through is reserved in the center of the mounting frame 8, the first bearing 9 is installed on the inner wall of the through hole, and the first bearing 9 is located between the through hole and the driving gear 7. The utility model discloses mounting bracket 8 and drive gear 7's structural design can play and prevent that the pencil bits from dropping, avoids causing the damage to sharpener bottom gear assembly isotructure.

The gear assembly comprises a first gear 11, the first gear 11 is sleeved outside the tubular part 12, the driving gear 7 is fixed to the top of the tubular part 12, and the driving gear 7 rotates to drive the tubular part 12 to rotate. The connection between the drive gear 7 and the gear assembly of the present invention is through the tubular member 12.

The driving gear 7 is a conical gear, the bottom surface of the tool rest 5 is a conical surface which is matched with the driving gear 7 in structure, and the gear teeth 6 are positioned on the conical surface.

As shown in fig. 2: an upper frame piece 13 is arranged at the top of the shell 1, the top of the pen containing bin 4 penetrates through the upper frame piece 13, and a second bearing 14 is arranged between the outer wall surface of the pen containing bin 4 and the upper frame piece 13. The structure of the second bearing 14 is configured to be unnecessary, may be configured, and is not configured, so that the structure of the second bearing 14 is not shown in fig. 1 of the drawings attached to the present specification, but is shown in fig. 2 of the drawings attached to the present specification. The design of the second bearing 14 results in a low friction during operation of the tool holder 5 and a high positioning accuracy.

The top of the pen container 4 is in a circular tubular structure, the second bearing 14 is sleeved outside the top of the pen container 4, and the second bearing 14 is arranged on the inner wall surface of the upper frame piece 13. The friction between the tool holder 5 and the housing 1 is effectively reduced.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above is to the utility model discloses going on the detailed introduction, having used specific individual example to right in this paper the utility model discloses a principle and implementation mode have been elucidated, and the explanation of above embodiment only is used for helping understanding the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The utility model provides a gear drive of ware cuts, establishes the casing of mounting bracket in including, the gear assembly be connected with the motor and have the hobbing cutter, hold the knife rest in a storehouse, its characterized in that knife rest bottom be provided with the round teeth of a cogwheel, the knife rest pass through the teeth of a cogwheel and drive gear engagement, the drive gear bear and establish on the mounting bracket and be connected with the gear assembly, drive gear with the mounting bracket between set up first bearing.

2. The gear transmission mechanism of a pencil sharpener of claim 1, wherein the periphery of the mounting bracket is connected to the inner wall of the housing, a through hole for the driving gear to pass through is reserved in the center of the mounting bracket, the first bearing is mounted on the inner wall of the through hole, and the first bearing is located between the through hole and the driving gear.

3. The gear transmission mechanism of a pencil sharpener of claim 1 wherein said gear assembly includes a first gear, said first gear being sleeved around said tubular member, said drive gear being fixed to the top of said tubular member, said drive gear rotating to rotate said tubular member.

4. The gear transmission mechanism of a pencil sharpener as claimed in claim 1, wherein said driving gear is a conical gear, said bottom surface of said cutter holder is a conical surface adapted to the structure of said driving gear, and said teeth are located on said conical surface.

5. The gear transmission mechanism of a pencil sharpener according to claim 1, wherein the top of the housing is provided with an upper frame member, the top of the pencil holding bin penetrates through the upper frame member, and a second bearing is arranged between the outer wall surface of the pencil holding bin and the upper frame member.

6. The gear transmission mechanism of a pencil sharpener according to claim 5, wherein the top of the pencil holding chamber is a circular tubular structure, the second bearing is sleeved outside the top of the pencil holding chamber, and the second bearing is arranged on the inner wall surface of the upper frame member.