CN217476957U

CN217476957U - Eraser

Info

Publication number: CN217476957U
Application number: CN202221060656.9U
Authority: CN
Inventors: 徐亮志
Original assignee: Zhejiang Yizheng Cultural Supplies Co ltd
Current assignee: Zhejiang Yizheng Cultural Supplies Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-09-23
Anticipated expiration: 2032-05-05

Abstract

The utility model relates to the field of erasing devices, in particular to an eraser, which comprises an eraser with a triangular prism shape and a shell arranged on the outer side of the eraser in the length direction, wherein a channel which is used for containing the eraser and has a shape matched with that of the eraser is arranged in the shell, one end of the channel is an eraser outlet, the eraser is arranged in the channel in a sliding way, and the head end of the eraser can extend out of the eraser outlet; a sliding groove is arranged on the shell, and a rubber positioning piece is arranged in the channel in a sliding manner along the extending direction of the channel; the eraser positioning piece is arranged at the tail end of the eraser and moves synchronously with the eraser; the rubber positioning piece is provided with a poking sheet which extends out of the chute and moves the poking sheet, so that the rubber positioning piece drives the rubber to slide in the channel. The utility model has the advantages that the position of the rubber can be controlled at will, especially when the rubber is continuously used, the length is shortened, and the rubber still can be extended out from the shell by controlling the rubber positioning piece.

Description

Eraser

Technical Field

The utility model belongs to the technical field of erase device and specifically relates to an eraser.

Background

An eraser is a common stationery product and is used for erasing marks left by materials such as graphite or ink. The eraser is usually made into a block shape, in order to better protect the eraser and prolong the service life of the eraser, a pushing eraser is provided, a shell is added on the outer side of the eraser, a pushing device is arranged in the shell, so that the eraser can be pushed to stretch out and draw back from the shell, when in use, the eraser can extend out of the shell to erase traces, and when not in use, the eraser can be retracted into the shell to avoid loss.

In the Chinese utility model patent (publication No. CN103373155A, published: 20131030), an eraser with a clamping sheath is disclosed, which consists of a hollow sheath and an eraser, wherein two ends of the sheath are open and a clamping groove is arranged on the side wall of the sheath; the clamping groove is communicated with openings at two ends of the sheath and is parallel to the central axis of the sheath; the eraser enters from the opening at any end of the sheath, and when the eraser is adjusted, the eraser exposed out of the clamping groove is poked, so that the eraser moves to a proper position towards the opening end of the sheath; when the eraser is used, the sheath is pinched to generate inward extrusion force to clamp the eraser, so that the eraser cannot move in the using process. However, in the use process of the eraser, the friction force between the eraser and the sheath is reduced along with the continuous friction between the eraser and the sheath, and finally the eraser can easily fall out of the sheath.

In a chinese utility model patent (publication No. CN215321680U, published japanese 20211228), there is disclosed a push-type eraser comprising: the rubber, the clamping component, the sliding component, the push button and the shell, the shell is a long strip-shaped tubular structure, and one end of the shell is provided with a rubber outlet, one side of the shell, which is vertical to the plane of the rubber outlet, is provided with a strip-shaped pushing slide rail, the eraser, the clamping component and the sliding component are at least partially positioned in the shell, the clamping component is connected with the sliding component, and are both positioned at one end of the shell far away from the eraser outlet, the clamping component is suitable for fixing the eraser, the sliding component is suitable for sliding along the pushing slide rail in a reciprocating manner, the pushing button is positioned outside the shell and is connected with the sliding component through the pushing slide rail, and then the sliding assembly and the clamping assembly are pulled through external pushing so as to push the eraser to stretch back and forth. However, the eraser has many parts, the structure is rather complicated, the manufacturing cost is increased, and the erasing range is difficult to control when the eraser is used because the shape of the eraser is approximately cuboid. More importantly, when the eraser is used continuously and the length of the eraser is shortened, the eraser cannot be effectively extended or the position of the eraser cannot be effectively locked.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides an eraser, which has a simple structure and is easy to use, and can not easily fall out of the casing and still extend out of the casing after the length of the eraser is shortened.

For the purpose of the utility model, the following technical proposal is adopted for implementation:

an eraser comprises an eraser body and a shell, wherein the shape of the eraser body is a triangular prism, the shell is arranged on the outer side of the length direction of the eraser body, a channel which is used for containing the eraser body and is matched with the shape of the eraser body is arranged in the shell, one end of the channel is an eraser outlet, the eraser body is arranged in the channel in a sliding mode, and the head end of the eraser body can extend out of the eraser outlet; the shell is provided with a sliding groove extending along the length direction of the eraser, and the sliding groove penetrates through the inner surface and the outer surface of the shell; in the channel, a rubber positioning piece is arranged in a sliding manner along the extending direction of the channel and is in contact with the inner wall of the shell, so that a damping structure is formed; the eraser positioning piece is arranged at the tail end of the eraser and moves synchronously with the eraser; the rubber positioning piece is provided with a poking piece, the poking piece extends out of the sliding groove and moves the poking piece, so that the rubber positioning piece drives the rubber to slide in the channel.

Preferably, the tail end of the eraser is provided with a connecting part of which the shape is smaller than that of the eraser, the eraser positioning part is provided with a connecting cavity which is used for accommodating the connecting part and is matched with the connecting part in shape, and the connecting part is arranged in the connecting cavity; the inner wall of the rubber positioning piece is provided with a first rib protruding towards the direction of the connecting cavity, and the first rib is abutted against the connecting part, so that the connecting part and the connecting cavity are relatively fixed.

Preferably, the rubber positioning piece is provided with a second rib protruding outwards on the outer surface, and the second rib is in press fit with the inner wall of the shell, so that the damping structure is formed.

Preferably, the poking piece is bent towards the outer surface of the shell after extending out of the sliding groove and extends along the outer surface, a groove is formed between the poking piece and the rubber positioning piece, and a part of the shell is positioned in the groove.

Preferably, the outer surface of the dial piece is provided with a concave portion which is concave inwards.

Preferably, the outer shell includes a back surface and a first side surface and a second side surface respectively arranged on two sides of the back surface, the first side surface and the second side surface are both inclined towards a normal direction of the back surface, so that the outer shell is integrally triangular prism-shaped, and a distance is reserved between ends of the first side surface and the second side surface, which are respectively far away from the back surface, and the distance is the sliding groove.

Preferably, the shell is integrally formed and made of plastic; the first side and the second side can be folded relative to the back to press the first side and the second side, so that the eraser is relatively fixed in the channel.

Preferably, a stopper for stopping the rubber stopper from falling out of the rear end of the housing is provided at the rear end of the housing.

Preferably, the blocking part is a convex strip which is arranged on the inner wall of the shell and protrudes out of the inner wall; or the blocking part is a convex strip which is arranged on the outer surface of the shell and protrudes out of the outer surface.

To sum up, the utility model has the advantages that: the whole eraser is in a triangular prism shape, so that the eraser is convenient to use under various conditions. Meanwhile, the outer side of the eraser is provided with the shell, and the eraser is driven to move in the channel through the eraser positioning piece, so that the position of the eraser can be controlled at will, and particularly, under the condition that the length of the eraser is shortened after the eraser is continuously used, the eraser can still extend out of the shell through controlling the eraser positioning piece, and the eraser is easy to control. A certain damping force is provided between the eraser positioning piece and the shell, so that the eraser cannot move on the shell randomly due to the action of gravity.

Drawings

FIG. 1 is an exploded view of the eraser from one perspective.

FIG. 2 is an exploded view of the eraser from another perspective.

FIG. 3 is a schematic view of a rubber retainer.

FIG. 4 is a schematic view of the overall structure of the eraser.

Detailed Description

As shown in figures 1 and 2, the eraser comprises an eraser 2 which is in a triangular prism shape, a shell 1 is arranged on the outer side of the eraser 2 in the length direction, a channel 11 which is used for containing the eraser 2 and is matched with the eraser 2 in shape is arranged in the shell 1, an eraser outlet 12 is arranged at one end of the channel 11, and the eraser 2 is arranged in the channel 11 in a sliding mode, so that the head end of the eraser 2 can extend out of the eraser outlet 12, and the eraser is convenient to erase. A chute 13 penetrating through the inner surface and the outer surface of the shell 1 is arranged on the shell 1 at a position corresponding to one edge of the rubber 2, and the chute 13 communicates the external space with the channel 11. It should be noted that the position of the sliding groove 13 is only shown by way of example in the figures, and it is obvious that the sliding groove 13 can be at any position corresponding to the side surface of the eraser 2, but it should be noted that the extending direction of the sliding groove 13 is approximately parallel to the length direction of the eraser. In the channel 11, the rubber positioning piece 3 is also arranged in a sliding way along the extending direction of the channel 11, the shape of the rubber positioning piece 3 is preferably adapted to the shape of the channel 11, and the rubber positioning piece 3 is required to be contacted (partially contacted or fully contacted) with the inner wall of the shell 1, so that damping force is generated between the rubber positioning piece 3 and the inner wall, and the rubber positioning piece 3 cannot slide in the channel 11 randomly under the action of gravity. The eraser positioning piece 3 is arranged at the tail end of the eraser 2, and the eraser positioning piece 3 and the eraser 2 synchronously slide in the channel 11; the rubber positioning piece 3 is provided with a poking piece 31, the poking piece 31 extends out of the sliding groove 13, and when the rubber is moved, the poking piece 31 is pushed and pulled to drive the rubber 2 to move in the channel. When the eraser is used, two outer surfaces of the shell 1 close to the sliding groove 13 are pressed to slightly deform, so that the eraser 2 is pressed inwards, the position of the eraser 2 is fixed, the eraser 2 is prevented from moving upwards after being subjected to a reaction force given by a paper surface, and the use of the eraser is facilitated.

As shown in figures 1 and 2 and combined with figure 3, in order to enable the eraser 2 and the eraser positioning piece 3 to move synchronously, the tail end of the eraser 2 is provided with a connecting part 21, the external dimension of the connecting part 21 is smaller than that of the rest part of the eraser 2, and a step surface 22 is formed between the connecting part 21 and the eraser 2. The eraser positioning piece 3 is provided with a connecting cavity 30 which is used for accommodating the connecting part 21 and matched with the shape of the connecting part 21, the connecting part 21 is arranged in the connecting cavity 30, a first rib 32 which protrudes towards the connecting cavity 30 is arranged on the inner wall of the eraser positioning piece 3, the first rib 32 extends along the length direction of the eraser, and the connecting part 21 is clamped in the connecting cavity 30 through the first rib 32, so that the eraser 2 and the eraser positioning piece 3 can synchronously move. Preferably, the connecting portion 21 has a polygonal structure such as a triangular prism and a quadrangular prism and has an arc-shaped appearance including a circular or elliptical cross-section. Preferably, the connecting portion 21 has a triangular prism shape, and the shape of the connecting portion 21 is reduced in an equal ratio to the shape of the eraser 2 and is parallel to each other.

As shown in fig. 3, in order to make the eraser holder 3 not easily slide in the channel 11 with a certain resistance when moving in the channel 11, a second rib 33 protruding outward is disposed on the outer surface of the eraser holder 3, the second rib 33 extends along the length direction of the eraser, the second rib 33 is press-fitted on the inner wall of the housing 1, so that the eraser holder 3 and the housing 1 form a line contact, thereby forming a certain damping, and not easily slide, but the eraser holder 3 can be pushed to slide in the channel 11 by only applying a proper force to the eraser holder 3.

As shown in fig. 3, in order to minimize the overall eraser profile and facilitate storage, the above-mentioned driver blade 31 is bent toward and extends along the outer surface of the housing 1 after protruding out of the sliding groove 13, so that a recess 34 is formed between the driver blade 31 and the eraser holder 3, and a portion of the housing 1 is located in the recess 34. The connecting end of the driver blade 31 in fig. 3 is arranged at one corner of the rubber retainer 3, but it is easy to think that when the position of the slide groove 13 changes, the connecting end position of the driver blade 31 also needs to change correspondingly. The eraser is still triangular prism-shaped as a whole due to the structure, and is convenient to store.

As shown in fig. 2 and 4, in order to facilitate the user to push and pull the poking piece 31, an inwardly recessed portion 311 is provided on the outer surface of the poking piece 31, and when the eraser is used, the finger presses the recessed portion 311, and then pushes the poking piece 31 to slide in the sliding groove 13, so that the position of the eraser 2 can be adjusted, and the eraser can be controlled to extend out of or retract into the eraser outlet 12.

As shown in fig. 2, in order to further seal the eraser 2, a closing surface 35 is provided at the tail end (the end far from the eraser outlet 12) of the eraser holder 3, and the closing surface 35 seals the tail end of the connecting portion 21 in the eraser holder 3 to prevent the connecting portion 21 from being exposed.

As shown in fig. 1, in order to further simplify the shape of the housing 1, the housing 1 is integrally formed, and the housing 1 includes a back surface 1a and a first side surface 1b and a second side surface 1c respectively disposed at two sides of the back surface 1a, and the first side surface 1b and the second side surface 1c are both inclined toward a normal direction of the back surface 1a, so that the housing 1 is a triangular prism as a whole, and thus, the inner regions of the back surface 1a, the first side surface 1b and the second side surface 1c are the channels 11. The first side surface 1b and the second side surface 1c are spaced apart from each other by a distance, which is the above sliding groove 13, between the ends thereof away from the back surface 1 a. In the present embodiment, since the sliding groove 13 is located on the edge of the triangular prism, the first side surface 1b and the second side surface 1c are both a plane. In other embodiments, for example when the slide groove 13 is located on the side of a triangular prism, one of the first side surface 1b and the second side surface 1c needs to be bent (not shown in the drawings) so that the housing 1 is kept in the triangular prism shape at all. Generally, the inclination angles of the first side surface 1b and the second side surface 1c are bilaterally symmetrical with respect to the normal plane at the center of the back surface 1a, which facilitates the use and improves the aesthetic effect.

As shown in fig. 1 and 2, the casing 1 is made of plastic, so that the first side surface 1b and the second side surface 1c can be folded relative to the back surface 1a, which is convenient for controlling the size of the channel 11, so that the eraser 2 can slide in the channel 11, or the eraser 2 can be fixed in the channel 11. Note that both ends of the passage 11 are open, and in order to prevent the eraser holder 3 from sliding out of the rear end of the housing 1 (the opening of the passage 11 away from the eraser exit 12) during movement, a blocking portion 14 is provided on the housing 1 near the rear end of the housing 1, and the blocking portion 14 is used for blocking the eraser holder 3. For example, as shown in fig. 1 and 2, the blocking portion 14 is a convex rib protruding outward, and the blocking portion 14 may be disposed on an outer surface of the second side surface 1c and extend along a width direction of the second side surface 1 c. At this time, when the toggle piece 31 moves, the rubber positioning piece 3 is not dropped out from the tail end of the housing 1 under the action of the blocking part 14. In other embodiments, it is obvious that the blocking portion 14 may be disposed on the inner wall of the housing 1 (not shown), when the toggle piece 31 is pushed, the tail end (the end far from the eraser exit 12) of the eraser positioning member 3 will be blocked by the blocking portion 14, so that the eraser positioning member 3 will not fall out of the tail end of the housing 1.

The utility model discloses an eraser use as follows, when needs stretch out eraser 2 from rubber export 12, the depressed part 311 on the user's finger is pressed and is pushed down the plectrum 31, then drive plectrum 31 removes to the direction of rubber export 12, thereby rubber setting element 3 will drive connecting portion 21 and remove in passageway 11 in step, until eraser 2 stretches out suitable distance from rubber export 12, when erasing, the finger presses two sides that are close to spout 13 on the shell 1, make these two sides warp slightly, thereby press from both sides tightly eraser 2, make it can not relative removal on shell 1 when erasing. When the eraser 2 needs to be retracted, the recess 311 is also pressed, the driving dial 31 is driven to move reversely, so that the eraser positioning piece 3 drives the eraser 2 to move towards the inner area of the channel 11, and the eraser 2 is retracted into the channel 11.

To sum up, the utility model has the advantages that the whole eraser is triangular prism shape, is convenient for use under various situations. Meanwhile, the outer side of the eraser 2 is provided with the shell 1, the eraser 2 is driven to move in the channel 11 through the eraser positioning piece 3, the position of the eraser 2 can be controlled at will, especially, when the length of the eraser is shortened after the eraser is continuously used, the eraser 2 still can extend out of the shell 1 by controlling the eraser positioning piece 3, the control is relatively easy, the tail end of the shell cannot be fixedly arranged by an eraser locking device like the prior art, and when the eraser is short, the eraser locking device cannot lock the eraser.

Claims

1. An eraser comprises an eraser (2) and a shell (1), wherein the shape of the eraser is a triangular prism, the shell (1) is arranged on the outer side of the eraser (2) in the length direction, a channel (11) which is used for containing the eraser (2) and is matched with the eraser (2) in shape is arranged in the shell (1), an eraser outlet (12) is formed in one end of the channel (11), the eraser (2) is arranged in the channel (11) in a sliding mode, and the head end of the eraser (2) can extend out of the eraser outlet (12); the eraser is characterized in that a sliding groove (13) extending along the length direction of the eraser is arranged on the shell (1), and the sliding groove (13) penetrates through the inner surface and the outer surface of the shell (1); in the channel (11), a rubber positioning piece (3) is arranged in the extending direction of the channel (11) in a sliding way, and the rubber positioning piece (3) is contacted with the inner wall of the shell (1) so as to form a damping structure; the eraser positioning piece (3) is arranged at the tail end of the eraser (2), and the eraser positioning piece (3) and the eraser (2) move synchronously; the rubber positioning piece (3) is provided with a poking piece (31), the poking piece (31) extends out of the sliding groove (13), and the poking piece (31) is moved, so that the rubber positioning piece (3) drives the rubber (2) to slide in the channel (11).

2. The eraser as claimed in claim 1, wherein the tail end of the eraser (2) is provided with a connecting portion (21) having a smaller outer shape than the eraser (2), the eraser positioning member (3) is provided with a connecting cavity (30) for accommodating the connecting portion (21) and having an outer shape matching the connecting portion (21), and the connecting portion (21) is disposed in the connecting cavity (30); a first rib (32) protruding towards the direction of the connecting cavity (30) is arranged on the inner wall of the rubber positioning piece (3), and the first rib (32) is abutted against the connecting part (21), so that the connecting part (21) and the connecting cavity (30) are relatively fixed.

3. An eraser as claimed in claim 1, wherein the eraser retainer (3) is provided on its outer surface with a second rib (33) projecting outwardly therefrom, the second rib (33) being press-fitted to the inner wall of the casing (1) to form said damping structure.

4. An eraser as claimed in claim 1, wherein the driver blade (31) extends out of the slot (13) and is bent towards and extends along the outer surface of the housing (1), a recess (34) being formed between the driver blade (31) and the eraser retainer (3), a portion of the housing (1) being located within the recess (34).

5. An eraser according to claim 4, wherein the outer surface of the striking plate (31) is provided with an inwardly recessed depression (311).

6. An eraser according to claim 1, wherein the casing (1) comprises a back surface (1 a) and a first side surface (1 b) and a second side surface (1 c) respectively disposed on both sides of the back surface (1 a), the first side surface (1 b) and the second side surface (1 c) are both inclined toward a normal direction of the back surface (1 a) so that the casing (1) is generally in a triangular prism shape, and a distance is left between ends of the first side surface (1 b) and the second side surface (1 c) which are respectively far from the back surface (1 a), and the distance is the sliding groove (13).

7. The eraser as claimed in claim 6, wherein the housing (1) is integrally formed of plastic; the first side surface (1 b) and the second side surface (1 c) can be folded relative to the back surface (1 a) to extrude the first side surface (1 b) and the second side surface (1 c), so that the eraser (2) is relatively fixed in the channel (11).

8. An eraser according to claim 1, wherein a stopper (14) for stopping the eraser holder (3) from falling out of the rear end of the casing (1) is provided at the rear end of the casing (1).

9. An eraser according to claim 8, wherein the blocking portion (14) is a rib provided on the inner wall of the housing (1) and protruding therefrom; or the blocking part (14) is a convex strip which is arranged on the outer surface of the shell (1) and protrudes out of the outer surface.