CN215435783U

CN215435783U - Novel gear synchronizing mechanism

Info

Publication number: CN215435783U
Application number: CN202121362357.6U
Authority: CN
Inventors: 郑崇廷; 曹锋; 张俊峰
Original assignee: Ningbo Tiantian Stationery Co ltd
Current assignee: Ningbo Tiantian Stationery Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-01-07
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses a novel gear synchronizing mechanism which is arranged on a pencil sharpener and comprises a main gear, an auxiliary gear and a clamping piece; the auxiliary gear is connected with the clamping piece and meshed with the main gear, and the auxiliary gear drives the main gear to move under the driving of the clamping piece; the number of the auxiliary gears corresponds to the number of the clamping pieces; during the work of the pencil sharpener, the worm wheel rotates to drive the clamping piece to move, wherein the clamping piece is driven by the worm wheel to pull the pencil inwards, the auxiliary gear is driven by the clamping piece to rotate, and then the main gear is driven to rotate; the clamping pieces can synchronously approach the pencil and contact the pencil through the matching of the main gear and the auxiliary gear; the clamping piece can uniformly feed the pencils into the knife rest of the pencil sharpener and uniformly take the pencils out of the knife rest; when guaranteeing that the pencil cutting result is up to standard, also avoided leading to equipment to damage because of the pencil dislocation, and then make operating personnel safer.

Description

Novel gear synchronizing mechanism

Technical Field

The utility model relates to the field of design and manufacture of pencil sharpeners, in particular to a novel gear synchronizing mechanism.

Background

The pencil sharpener is a pencil sharpening tool and can be divided into a common pencil sharpener and an electric pencil sharpener; compared with the common pencil sharpener, the electric pencil sharpener is more efficient, time and labor are saved, and meanwhile, the safety of operators is guaranteed to a certain degree.

In the existing electric pencil sharpener, the structure for bringing the pencil into the sharpener frame needs to uniformly and stably bring the pencil into the sharpener frame; however, the structure of the structure in the prior art is usually not stable enough, and cannot apply stable clamping force to the pencil, so that the sharpened pencil cannot meet the requirements; even the pencil is not subjected to uniform clamping force after entering the pencil sharpener, so that the pencil sharpener is damaged by the misplaced pencil, and even a user can be hurt.

In general, the meshing between gears is used for transmission; therefore, the utility model ensures that the rotation of each pinion is consistent by the way that the plurality of pinions are meshed with the main gear, thereby realizing the synchronous clamping of the pencil by the clamping piece.

Disclosure of Invention

The novel gear synchronizing mechanism overcomes the defects of the prior art, and is simple in structure, reasonable in design, stable in use and safer.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

a novel gear synchronizing mechanism is arranged on a pencil sharpener and comprises a main gear, an auxiliary gear and a clamping piece; the auxiliary gear is connected with the clamping piece and meshed with the main gear, and the auxiliary gear drives the main gear to move under the driving of the clamping piece; the number of the pinion gears corresponds to the number of the clamping pieces.

Further, the distance between the clamping pieces is equal, and the distance between the pinions is equal.

Furthermore, limiting columns are arranged on the side surface of the main gear, and the distances between the adjacent limiting columns are equal.

Furthermore, the number of the limiting columns corresponds to the number of the auxiliary gears.

Furthermore, the outer side surface of the pinion is provided with a tooth surface, the side surface between the adjacent limiting columns of the main gear is provided with a tooth surface, and the tooth surface of the pinion is meshed with the tooth surface of the main gear.

Further, the gear rack further comprises a worm wheel, and a rack is arranged on the worm wheel; the central position of the worm wheel is also provided with an outlet hole.

Furthermore, the clamping piece comprises an impeller, the impeller is sleeved on the clamping piece, and the impeller is meshed with the rack of the worm wheel; the worm wheel rotates to drive the clamping pieces to rotate downwards, the pen to be cut is inserted between the clamping pieces, and the clamping pieces rotating downwards extrude and drive the pen to be cut to enter the pen.

Furthermore, the device also comprises a shell, and the main gear, the auxiliary gear, the worm wheel and the clamping piece are arranged in the shell.

Further, the shell comprises a base, an assembling plate and a top cover; an installation space is arranged in the base, and the assembling plate, the main gear, the auxiliary gear, the worm wheel and the clamping piece are all arranged in the installation space; the main gear is arranged above the assembling plate, the worm gear and the clamping piece are arranged below the assembling plate, and the pinion is arranged on the assembling plate; an assembly column for mounting the pinion is arranged on the assembly plate, the assembly column is in a hollow column shape, the pinion is arranged on an assembly shaft, one end, far away from the pinion, of the assembly shaft penetrates through the assembly column to be connected with a clamping piece, the teeth of the pinion are arranged at the other end of the assembly shaft and are meshed with the teeth between the adjacent limiting columns of the main gear, and the clamping piece movably drives the pinion to rotate so as to further drive the main gear to rotate; a through hole is arranged at the central position of the assembly plate; the assembling plate is provided with a movable groove surrounding the through hole, and a contact block contacted with the pencil is arranged in the movable groove; the top cover seals the mounting space, and an access hole is formed in the position, corresponding to the through hole, of the top cover; the center positions of the through holes, the inlet holes and the outlet holes correspond to each other.

Furthermore, the device also comprises an auxiliary positioning group which comprises a first return spring and a second return spring; the first return spring is arranged in the movable groove, one end of the first return spring is in contact with the inner wall of the movable groove, and the other end of the first return spring is connected with the contact block; the assembling plate is also provided with a reset groove, the second reset spring is arranged in the reset groove, one end of the second reset spring is in contact with the inner wall of the reset groove, and the other end of the second reset spring is in contact with the limiting column; the second return spring is in contact with the clockwise rotation side of the limiting column or the second return spring is in contact with the anticlockwise rotation side of the limiting column.

The utility model has the beneficial effects that:

during the work of the pencil sharpener, the worm wheel rotates to drive the clamping piece to move, wherein the clamping piece is driven by the worm wheel to pull the pencil inwards, the auxiliary gear is driven by the clamping piece to rotate, and then the main gear is driven to rotate; the clamping pieces can synchronously approach the pencil and contact the pencil through the matching of the main gear and the auxiliary gear; the clamping piece can uniformly feed the pencils into the knife rest of the pencil sharpener and uniformly take the pencils out of the knife rest; when guaranteeing that the pencil cutting result is up to standard, also avoided leading to equipment to damage because of the pencil dislocation, and then make operating personnel safer.

The shell enables the protection effect of the utility model on all parts such as the main gear, the auxiliary gear, the worm wheel, the clamping piece and the like to be better.

The contact block enables the pencil in contact with the contact block to receive uniform clamping force, the pencil can accurately enter the tool rest, stable force is applied to one end, exposed out of the pencil, of the pencil when one end of the pencil is cut, and the problem that the pencil cutting effect is poor due to shaking of the pencil is avoided.

The first reset spring in the auxiliary positioning group enables the contact block to apply certain force to the pencil, so that the contact block can clamp the pencil more firmly; after the worm wheel drives the clamping piece to approximately reset, the second reset spring enables the main gear to reset synchronously and specifically.

Drawings

Fig. 1 is an overall structural view of the present invention.

Fig. 2 is a view showing the inside structure of the top cover.

Fig. 3 is a structural view of the main gear.

Fig. 4 is a view showing a structure of a mounting plate.

Fig. 5 is a view showing the inside structure of the case.

Fig. 6 is an assembly structure view of the holder, the pinion, and the worm wheel.

Reference numbers in the figures:

1. a main gear; 2. a pinion gear; 3. a clamping member; 4. a tool holder; 5. a worm gear; 6. a housing; 11. a limiting column; 31. an impeller; 32. fitting blocks; 33. a joining section; 51. a rack; 52. an outlet hole; 61. a base; 62. assembling a plate; 63. a top cover; 64. an installation space; 65. assembling the column; 66. through the hole; 67. a movable groove; 68. a contact block; 69. an access hole; 70. assembling a shaft; 71. a first return spring; 72. a second return spring; 73. a reset groove.

Detailed Description

The utility model is further described with reference to the following figures and specific examples. It should be noted that the examples are only for specifically illustrating the present invention, and the purpose thereof is to make the technical solution of the present invention better understood by those skilled in the art, and should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the directions or positional relationships shown in the drawings, which are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed in a specific direction and operation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in fig. 1-6, a novel gear synchronizing mechanism is provided on a pencil sharpener, and comprises a main gear 1, a secondary gear 2 and a clamping member 3; the auxiliary gear 2 is connected with the clamping piece 3 and meshed with the main gear 1, and the auxiliary gear 2 drives the main gear to move under the driving of the clamping piece 3; the number of the pinion gears 2 corresponds to the number of the clamping pieces 3; during the work of the pencil sharpener, the worm wheel 5 rotates to drive the clamping piece 3 to move, wherein the clamping piece 3 is driven by the worm wheel 5 to pull the pencil inwards, the auxiliary gear 2 is driven by the clamping piece 3 to rotate, and then the main gear 1 is driven to rotate; the main gear 1 and the auxiliary gear 2 are matched to enable the clamping pieces 3 to synchronously approach the pencil and contact with the pencil; so that the clamping member 3 can feed the pencils into the knife rest 4 of the utility model at a uniform speed and take the pencils out of the knife rest 4 at a uniform speed; the standard of the pencil cutting result is guaranteed, equipment damage caused by the misplacement of the pencil is avoided, and therefore the operating personnel are safer; generally, the utility model adopts one main gear 1, three pinions 2 and three clamping pieces 3, and the number of the main gear 1, the pinions 2 and the clamping pieces 3 can be increased according to the requirement; wherein the tooth surface of the additional main gear 1 and the tooth surface of the auxiliary gear 2 are in the same horizontal plane, so that the engagement between the main gear 1 and the auxiliary gear 2 is firmer and more stable, and the additional clamping pieces 3 can be arranged at different horizontal heights, but each horizontal height needs at least two clamping pieces 3 so that the pencil can be subjected to enough uniform clamping force.

In some preferred modes, an auxiliary wheel can be further included, and the auxiliary wheel is meshed with the main gear 1, so that the main gear 1 can stably run under the condition of being driven by the auxiliary gear 2, and unique problems, dislocation problems and the like cannot be caused.

In the embodiment, the distance between the clamping pieces 3 is equal, and the distance between the secondary gears 2 is equal, so that the clamping pieces 3 can be synchronized when moving.

In the embodiment, the side surface of the main gear 1 is provided with the limiting columns 11, the tooth surfaces of the pinions 2 are meshed with the tooth surfaces between the limiting columns 11 of the main gear 1, the distances between the adjacent limiting columns 11 are equal, and the limiting columns 11 separate the pinions 2, so that the movable ranges of the pinions 2 are consistent, the synchronous movement of the clamping piece 3 and the main gear 1 is further ensured, and the mutual influence between the pinions 2 is also avoided; generally, the number of the limiting columns 11 corresponds to the number of the secondary gears 2, but it is also possible to increase or decrease the number of the secondary gears 2 according to whether the driving force exerted by the secondary gears 2 on the main gear 1 is sufficient, for example, when the driving force exerted by the secondary gears 2 on the main gear 1 is sufficient, the number of the limiting columns 11 is greater than the number of the secondary gears 2, and an auxiliary wheel is arranged at a vacant position between the limiting columns 11 to stabilize the operation of the main gear 1.

In the present embodiment, the outer side surface of the pinion 2 is provided with a tooth surface, the stopper posts 11 are provided on the outer side surface of the main gear 1, and the tooth surface of the main gear 1 is provided on the outer side surface of the main gear 1, the tooth surface of the pinion 2 is engaged with the tooth surface of the main gear 1; in general, the pinion 2 is engaged with the outer side surface of the main gear 1, thereby preventing the poor pencil clamping effect of the clamping members 3 due to the too tight arrangement between the clamping members 3 of the present invention, and certainly, when the present invention has a wide inner space and does not affect the pencil clamping effect of the clamping members 3, the pinion 2 can be engaged with the inner side surface of the main gear 1.

In the embodiment, a worm wheel 5 is further included, and a rack 51 is arranged on the worm wheel 5; an outlet hole 52 is also arranged at the center of the worm wheel 5; the clamping piece 3 comprises an impeller 31, the impeller 31 is sleeved on the clamping piece 3, and the impeller 31 is meshed with the rack 51 of the worm wheel 5; the worm wheel 5 rotates to drive the clamping pieces 3 to rotate downwards, a pen to be cut is inserted between the clamping pieces 3, and the clamping pieces 3 rotating downwards extrude to drive the pen to be cut to enter the pen; the clamping piece 3 is also provided with a joint block 32 for increasing the contact friction force; the sticking block 32 is sleeved on the clamping piece 3, and the sticking block 32 is made of soft materials such as rubber, so that the sticking block 32 can apply better friction force to the pencil; the clamping piece 3 is also provided with a joint part 33, and the clamping piece 3 is connected with the pinion 2 through the joint part 33; and the engagement portion 33 protects the impeller 31 therein so that the holder 3 is further protected and transmission between the holder 3 and the pinion 2 is ensured by the engagement portion 33.

In some preferred modes, a gear transmission mode is adopted between the pinion 2 and the clamping piece 3; a series of transmission modes such as belt transmission, chain transmission and the like can also be adopted; it should be noted that, when the pinion 2 and the clamping member 3 are connected, the force transmitted from the worm wheel 5 to the rotation of the clamping member 3 needs to be transmitted to the pinion 2, so that the pinion 2 can drive the main gear 1 to rotate, and the clamping members 3 can move synchronously.

In the embodiment, the device further comprises a shell 6, wherein the main gear 1, the auxiliary gear 2, the worm wheel 5 and the clamping piece 3 are arranged in the shell 6; the shell 6 ensures that the protection effect of the utility model on the shell 6, the main gear 1, the auxiliary gear 2, the worm wheel 5, the clamping piece 3 and other parts is better; the housing 6 comprises a base 61, a fitting plate 62 and a top cover 63; an installation space 64 is arranged in the base 61, and the assembling plate 62, the main gear 1, the pinion 2, the worm wheel 5 and the clamping piece 3 are all arranged in the installation space 64; wherein the main gear 1 is arranged above the assembly plate 62, the worm wheel 5 and the clamping piece 3 are arranged below the assembly plate 62, and the auxiliary gear 2 is arranged on the assembly plate 62; an assembly column 65 for mounting the pinion 2 is arranged on the assembly plate 62, the assembly column 65 is in a hollow column shape, the pinion 2 is arranged on an assembly shaft 70, one end, far away from the pinion 2, of the assembly shaft 70 penetrates through the assembly column 65 to be connected with the clamping piece 3, teeth of the pinion 2 are arranged at the other end of the assembly shaft and are meshed with teeth between adjacent limiting columns 11 of the main gear 1, the clamping piece 3 movably drives the pinion 2 to rotate, and then the main gear 1 is driven to rotate, so that the assembly strength of the pinion 2 is higher; a through hole 66 is provided at a central position of the fitting plate 62; the mounting plate 62 is provided with a movable groove 67 surrounding the through hole 66, and a contact block 68 contacting with the pencil is arranged in the movable groove 67; the top cover 63 closes the installation space 64, and an access hole 69 is provided at a position of the top cover 63 corresponding to the access hole 66; the center position of the passage hole 66, the center position of the inlet hole 69, and the center position of the outlet hole 52 correspond; the pencil can stably and accurately enter the tool rest 4 for cutting under the action of the pencil sharpener, so that the pencil sharpener has a better effect after cutting.

In the present embodiment, an auxiliary positioning set is further included, which includes a first return spring 71 and a second return spring 72; the first return spring 71 is arranged in the movable groove 67, one end of the first return spring 71 is in contact with the inner wall of the movable groove 67, and the other end of the first return spring 71 is connected with the contact block 68; the assembly plate 62 is further provided with a reset groove 73, the second reset spring 72 is arranged in the reset groove 73, one end of the second reset spring 72 is in contact with the inner wall of the reset groove 73, and the other end of the second reset spring 72 is in contact with the limiting column 11; after the worm wheel 5 drives the clamping piece 3 to approximately reset, the second reset spring 72 enables the main gear 1 to synchronously reset in detail; in general, the second return springs are all in contact with the counterclockwise rotating side of the limiting column 11; the first reset spring 71 in the auxiliary positioning group enables the contact block 68 to apply a certain force to the pencil, so that the contact block 68 can clamp the pencil more firmly, and the specific contact direction of the second reset spring and the limiting column 11 needs to be determined according to the direction in which the worm wheel 5 drives the clamping piece 3 to rotate.

It should be noted that other technical solutions of the present invention all belong to the prior art, and therefore are not described in detail.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. A novel gear synchronizing mechanism is arranged on a pencil sharpener and is characterized by comprising a main gear, an auxiliary gear and a clamping piece; the auxiliary gear is connected with the clamping piece and meshed with the main gear, and the auxiliary gear drives the main gear to move under the driving of the clamping piece; the number of the pinion gears corresponds to the number of the clamping pieces.

2. A novel gear synchronisation mechanism according to claim 1, characterised in that the distance between the gripping members is equal and the distance between the pinions is equal.

3. The novel gear synchronizing mechanism according to claim 1, wherein limiting columns are arranged on the side surface of the main gear, and the distances between adjacent limiting columns are equal.

4. The novel gear synchronizing mechanism according to claim 3, wherein the number of the limiting columns corresponds to the number of the secondary gears.

5. The novel gear synchronizing mechanism as claimed in claim 4, wherein the outer side surface of the pinion is provided with a tooth surface, the side surface between adjacent limit posts of the main gear is provided with a tooth surface, and the tooth surface of the pinion is meshed with the tooth surface of the main gear.

6. The novel gear synchronous mechanism is characterized by further comprising a worm gear, wherein a rack is arranged on the worm gear; the central position of the worm wheel is also provided with an outlet hole.

7. The novel gear synchronous mechanism is characterized in that the clamping piece comprises an impeller, the impeller is sleeved on the clamping piece, and the impeller is meshed with a rack of a worm wheel; the worm wheel rotates to drive the clamping pieces to rotate downwards, the pen to be cut is inserted between the clamping pieces, and the clamping pieces rotating downwards extrude and drive the pen to be cut to enter the pen.

8. The novel gear synchronizing mechanism according to claim 1, further comprising a housing, wherein the main gear, the pinion gear, the worm gear and the clamping member are all disposed in the housing.

9. The novel gear synchronizing mechanism according to claim 8, wherein the housing comprises a base, a mounting plate and a top cover; an installation space is arranged in the base, and the assembling plate, the main gear, the auxiliary gear, the worm wheel and the clamping piece are all arranged in the installation space; the main gear is arranged above the assembling plate, the worm gear and the clamping piece are arranged below the assembling plate, and the pinion is arranged on the assembling plate; an assembly column for mounting the pinion is arranged on the assembly plate, the assembly column is in a hollow column shape, the pinion is arranged on an assembly shaft, one end, far away from the pinion, of the assembly shaft penetrates through the assembly column to be connected with a clamping piece, the teeth of the pinion are arranged at the other end of the assembly shaft and are meshed with the teeth between the adjacent limiting columns of the main gear, and the clamping piece movably drives the pinion to rotate so as to further drive the main gear to rotate; a through hole is arranged at the central position of the assembly plate; the assembling plate is provided with a movable groove surrounding the through hole, and a contact block contacted with the pencil is arranged in the movable groove; the top cover seals the mounting space, and an access hole is formed in the position, corresponding to the through hole, of the top cover; the center positions of the through holes, the inlet holes and the outlet holes correspond to each other.

10. The novel gear synchronizing mechanism according to claim 9, further comprising an auxiliary positioning set comprising a first return spring and a second return spring; the first return spring is arranged in the movable groove, one end of the first return spring is in contact with the inner wall of the movable groove, and the other end of the first return spring is connected with the contact block; the assembling plate is also provided with a reset groove, the second reset spring is arranged in the reset groove, one end of the second reset spring is in contact with the inner wall of the reset groove, and the other end of the second reset spring is in contact with the limiting column; the second return spring is in contact with the clockwise rotation side of the limiting column or the second return spring is in contact with the anticlockwise rotation side of the limiting column.