CN220662126U

CN220662126U - Telescopic eraser

Info

Publication number: CN220662126U
Application number: CN202322272961.5U
Authority: CN
Inventors: 王元鸿; 金辉祚
Original assignee: Qingdao Dianshi Stationery Co ltd
Current assignee: Qingdao Dianshi Stationery Co ltd
Priority date: 2023-08-23
Filing date: 2023-08-23
Publication date: 2024-03-26
Anticipated expiration: 2033-08-23

Abstract

The utility model discloses a telescopic eraser. The telescopic rubber comprises a shell, a rubber and a rotating part, wherein a mounting port is formed in one end of the shell, a plurality of first strip-shaped holes which are arranged side by side are formed in a first side wall of the shell, a plurality of second strip-shaped holes which are arranged side by side are formed in a second side wall of the shell, the first strip-shaped holes and the second strip-shaped holes are obliquely arranged relative to the central line of the shell, the oblique directions of the first strip-shaped holes and the second strip-shaped holes are opposite, and the first side wall and the second side wall are oppositely arranged; the rotating part is provided with a spiral rib, and the spiral rib is positioned in the first strip-shaped hole and the second strip-shaped hole; the rubber is inserted in the mounting opening and slidably arranged in the housing, and the rubber abuts against the rotating part. The whole structure of the telescopic rubber is simplified, and the manufacturing cost of the telescopic rubber is reduced.

Description

Telescopic eraser

Technical Field

The utility model relates to stationery, in particular to a telescopic eraser.

Background

At present, the eraser is an indispensable stationery in daily life and work of people and is used for erasing wrong characters on paper in the pencil writing process. Chinese patent publication No. CN210211839U discloses a telescopic eraser, in which a telescopic assembly is disposed inside a housing to connect with the eraser, and a rotary rod having a thread is disposed to drive the telescopic assembly to reciprocate inside the housing. In the use, the user rotates the telescopic subassembly that rotary rod drive inside and removes in order to drive the rubber and stretch out. However, in order to achieve the extension of the rubber, the telescopic assembly is required to be driven by the rotary rod to indirectly drive the rubber to move, and the parts are more, so that the whole structure is complex, and the manufacturing cost is higher. In view of this, how to design a telescopic eraser with a simple structure to reduce the manufacturing cost is a technical problem to be solved by the utility model.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the telescopic rubber is simplified in overall structure and low in manufacturing cost.

The technical scheme includes that the telescopic rubber comprises a shell, a rubber and a rotating part, wherein a mounting opening is formed in one end portion of the shell, a plurality of first strip-shaped holes which are arranged side by side are formed in a first side wall of the shell, a plurality of second strip-shaped holes which are arranged side by side are formed in a second side wall of the shell, the first strip-shaped holes and the second strip-shaped holes are obliquely arranged relative to the central line of the shell, the oblique directions of the first strip-shaped holes and the second strip-shaped holes are opposite, and the first side wall and the second side wall are oppositely arranged;

the rotating part is provided with a spiral rib, and the spiral rib is positioned in the first strip-shaped hole and the second strip-shaped hole; the rubber is inserted in the mounting opening and slidably arranged in the housing, and the rubber abuts against the rotating part.

In one embodiment of the present application, the end surface of the rotating member opposite to the rubber is provided with a second protrusion structure, and the second protrusion structure abuts against the rubber.

In an embodiment of the present application, an outer surface of the second protruding structure is a spherical surface.

In an embodiment of the present application, the rubber is fixedly connected to the rotating member, and the rotating member is configured to drive the rubber to rotate and move.

In another aspect, the utility model further provides a telescopic rubber, which comprises a shell, a rubber, a rotating part and a connecting part, wherein a mounting port is formed at one end part of the shell, a plurality of first strip-shaped holes which are arranged side by side are formed in a first side wall of the shell, a plurality of second strip-shaped holes which are arranged side by side are formed in a second side wall of the shell, the first strip-shaped holes and the second strip-shaped holes are obliquely arranged relative to the central line of the shell, the oblique directions of the first strip-shaped holes and the second strip-shaped holes are opposite, and the first side wall and the second side wall are oppositely arranged;

the rotating part is provided with a spiral rib, and the spiral rib is positioned in the first strip-shaped hole and the second strip-shaped hole;

the connecting part is provided with a rotating shaft, the rotating shaft is rotatably arranged on the rotating part, the connecting part is slidably arranged in the shell and can rotate relative to the rotating part, the rubber is inserted into the mounting opening and is slidably arranged in the shell, and the rubber is connected with the connecting part.

In one embodiment of the application, the connecting part is provided with oppositely arranged claws, and the rubber is clamped between the two claws;

or, a clamping groove is formed in the connecting component, and the end part of the rubber is clamped in the clamping groove.

In an embodiment of the application, be provided with the shaft hole on the rotating part, the pivot includes the elastic component of relative arrangement, the free end of elastic component is provided with spacing turn-ups, the elastic component is inserted in the shaft hole, spacing turn-ups be configured to with the limit of edge cooperation in shaft hole restriction the pivot is followed break away from in the shaft hole.

In an embodiment of the present disclosure, first protruding structures are respectively disposed on inner walls of a third side wall and a fourth side wall of the housing, the first protruding structures are close to the mounting opening, the third side wall and the fourth side wall are disposed opposite to each other, and the first side wall and the second side wall are located between the third side wall and the fourth side wall; the rubber is clamped between the two first protruding structures.

In an embodiment of the application, the first side wall has a first extension portion, the second side wall has a second extension portion, the first extension portion with the second extension portion stretches out to the outside of installing port is unsettled to be arranged, also be provided with on the first extension portion first bar hole, also be provided with on the second extension portion the second bar hole.

In an embodiment of the present application, the third side wall has a third extension portion, the fourth side wall has a fourth extension portion, the third extension portion with the fourth extension portion stretches out to the outside of installing port is unsettled to be arranged, the third extension portion with the free end of fourth extension portion is provided with respectively first protruding structure.

In an embodiment of the present application, a friction portion is disposed at an edge of the spiral rib.

Compared with the prior art, the utility model has the advantages and positive effects that: through being provided with first bar hole and second bar hole on the relative lateral wall of shell correspondence, many first bar holes and many second bar holes staggered arrangement in proper order are in order to form approximately spiral helicine guide track, and then satisfy the installation requirement of rotating parts through first bar hole and second bar hole, like this, alright need not parts such as external screw rod of extra configuration to the overall structure of effectual simplification telescopic rubber, and reduce telescopic rubber's manufacturing cost.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of a telescopic eraser according to the present utility model;

FIG. 2 is a second schematic structural view of an embodiment of the telescopic eraser of the utility model;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an exploded view of the embodiment of the telescopic eraser of FIG. 1;

FIG. 5 is a schematic view of the housing of FIG. 1;

FIG. 6 is a cross-sectional view of another embodiment of the telescopic eraser of the utility model;

fig. 7 is an exploded view of another embodiment of the telescopic eraser of the present utility model.

Reference numerals:

1. a housing; 11. a mounting port; 12. a first bar-shaped hole; 13. a second bar-shaped hole; 14. a first bump structure; 15. a first extension; 16. a second extension; 17. a third extension; 18. a fourth extension;

101. a first sidewall; 102. a second sidewall; 103. a third sidewall; 104. a fourth sidewall;

2. an eraser;

3. a rotating member; 31. spiral ribs; 32. a second bump structure; 33. a shaft hole;

4. a connecting member; 41. a rotating shaft; 42. a claw;

411. an elastic member; 412. and (5) limit flanging.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

1-5, the telescopic rubber of the embodiment comprises a shell 1, a rubber 2 and a rotating part 3, wherein a mounting port 11 is formed at one end part of the shell 1, a plurality of first strip-shaped holes 12 which are arranged side by side are formed in a first side wall 101 of the shell 1, a plurality of second strip-shaped holes 13 which are arranged side by side are formed in a second side wall 102 of the shell 1, the first strip-shaped holes 12 and the second strip-shaped holes 13 are obliquely arranged relative to the central line of the shell 1, the oblique directions of the first strip-shaped holes 12 and the second strip-shaped holes 13 are opposite, and the first side wall 101 and the second side wall 102 are oppositely arranged;

the rotating part 3 is provided with a spiral rib 31, and the spiral rib 31 is positioned in the first strip-shaped hole 12 and the second strip-shaped hole 13; the rubber 2 is inserted in the mounting opening 11 and slidably provided in the housing 1, and the rubber 2 abuts against the rotating member 3.

Specifically, the telescopic rubber provided by the application is characterized in that the first strip-shaped holes 12 and the second strip-shaped holes 13 which are oppositely arranged and have opposite inclination directions are directly formed on the shell 1, and therefore, the first strip-shaped holes 12 and the second strip-shaped holes 13 which are alternately arranged in sequence form a track which is approximately spirally guided.

And be provided with spiral muscle 31 on the periphery of rotating member 3, spiral muscle 31 will be located in the first bar hole 12 of relative arrangement and second bar hole 13, relies on the spiral guide track that first bar hole 12 and second bar hole 13 formed to satisfy rotating member 3 and realize sliding in shell 1 in the rotation in-process, and then promote rubber 2 to remove.

In a specific use process, a user applies external force to the spiral ribs 31 in the first strip-shaped holes 12 and the second strip-shaped holes 13 by hand on the outer sides of the first side wall 101 and the second side wall 102 of the casing 1, so that the rotating part 3 rotates in the casing 1, and guides the rubber 2 to push the rubber to extend outwards from the mounting opening 11 by utilizing the first strip-shaped holes 12 and the second strip-shaped holes 13.

In an embodiment, in order to facilitate the user to apply an external force to the spiral rib 31, a friction portion (not labeled) may be further provided at the edge of the spiral rib 31.

Specifically, the friction part may be a plurality of bumps, roughened surfaces or a plurality of serrations formed on the spiral rib 31, so that the rotation member 3 can be more effectively driven to rotate after the user's finger contacts the friction part.

In another embodiment, first protruding structures 14 are respectively disposed on inner walls of the third side wall 103 and the fourth side wall 104 of the housing 1, the first protruding structures 14 are close to the mounting opening 11, the third side wall 103 is disposed opposite to the fourth side wall 104, and the first side wall 101 and the second side wall 102 are located between the third side wall 103 and the fourth side wall 104; the rubber 2 is sandwiched between two of the first bump structures 14.

Specifically, in order to prevent the rubber 2 from being separated from the mounting opening 11 of the housing 1 when the rotating member 3 is not rotated, first protrusion structures 14 arranged oppositely may be provided on the inner wall of the housing 1, and the rubber 2 may be clamped by using the two first protrusion structures 14.

In one embodiment, the first side wall 101 has a first extension portion 15, the second side wall 102 has a second extension portion 16, the first extension portion 15 and the second extension portion 16 extend to the outside of the mounting opening 11 and are arranged in a suspended manner, the first extension portion 15 is also provided with the first strip-shaped hole 12, and the second extension portion 16 is also provided with the second strip-shaped hole 13.

Specifically, the housing 1 is generally injection molded from a plastic material, and during the molding process, the first extension portion 15 and the second extension portion 16 formed on the first sidewall 101 and the second sidewall 102 can extend to the outside of the mounting opening 11, so that the elastic deformability of the first extension portion 15 and the second extension portion 16 is utilized to satisfy the requirement of assembling the rotating member 3 between the first extension portion 15 and the second extension portion 16, so as to facilitate the assembling of the rotating member 3 to the housing 1.

In one embodiment, the third side wall 103 has a third extension 17, the fourth side wall 104 has a fourth extension 18, the third extension 17 and the fourth extension 18 extend to the outside of the mounting opening 11 and are arranged in a suspended manner, and the free ends of the third extension 17 and the fourth extension 18 are respectively provided with the first protrusion structure 14.

Specifically, the third extension 17 and the fourth extension 18 formed on the third sidewall 103 and the fourth sidewall 104 can extend to the outside of the mounting opening 11, and the third extension 17 and the fourth extension 18 have elasticity, so that the first protrusion structures 14 on the third extension 17 and the fourth extension 18 can effectively clamp the rubber 2, thereby improving the use reliability.

In one embodiment, the end surface of the rotating member 3 opposite to the rubber 2 is provided with a second protrusion 32, and the second protrusion 32 abuts against the rubber 2.

Specifically, in order to ensure smooth rotation of the rotating member 3 and also to satisfy the requirement that the rotating member 3 can effectively push the rubber 2 to move, the second protrusion structure 32 is provided on the rotating member 3. On the one hand, the second protruding structure 32 can be abutted against the rubber 2 to meet the requirement of pushing the rubber 2 to move, and on the other hand, the contact area between the second protruding structure 32 and the rubber 2 is smaller, so that the friction force generated when the rubber 2 rotates the rotating part 3 is reduced, and the use smoothness is improved. Wherein the outer surface of the second bump structure 32 may be spherical.

In another embodiment, the eraser 2 may be directly and fixedly connected to the rotating member 3, so that the rotating member 3 drives the eraser 2 to move telescopically during rotation, and drives the eraser 2 to rotate.

Through being provided with first bar hole 12 and second bar hole 13 on the relative lateral wall of shell 1 correspondence, many first bar holes 12 and many second bar holes 13 staggered arrangement in proper order are in order to form approximately spiral form the guide track, and then satisfy the installation requirement of rotating member 3 through first bar hole 12 and second bar hole 13, like this, alright need not parts such as external screw rod of extra configuration to the overall structure of effectual simplification telescopic rubber, and reduce telescopic rubber's manufacturing cost.

In the second embodiment, as shown in fig. 6 and 7, a connecting component 4 is further provided between the rubber 2 and the rotating component 3, so that the rubber 2 and the rotating component 3 are connected together through the connecting component 4, and the requirement that the rubber 2 can retract is further achieved.

Specifically, the connecting part 4 is provided with a rotating shaft 41, the rotating shaft 41 is rotatably arranged on the rotating part, the connecting part 4 is slidably arranged in the housing and can rotate relative to the rotating part, the rubber is inserted in the mounting opening and is slidably arranged in the housing, and the rubber is connected with the connecting part 4.

In the use process, when a user drives the rotating part 3 to rotate in the positive direction, the rotating part 3 moves towards the direction of the mounting opening so as to drive the rubber 2 to extend through the connecting part 4.

When the user drives the rotating part 3 to rotate in the reverse direction, the rotating part 3 moves away from the direction of the mounting opening, and the connecting part 4 drives the rubber 2 to extend.

During the rotation of the rotating member 3, the connecting member 4 can rotate relative to the rotating member through the rotating shaft 41, so that the connecting member 4 can slide in the housing 11, and the rubber 2 is driven to extend or retract.

In one embodiment, there are various ways of connecting the rubber 2 to the connecting member 4. For example: the connecting part 4 is provided with oppositely arranged claws 42, and the rubber is clamped between the two claws 42. In particular, the end of the rubber 2 connected to the connecting part 4 will be clamped between the two jaws 42, so that the rubber 2 is fixedly connected to the connecting part 4, and the rubber 2 can be extended or retracted following the connecting part 4.

Alternatively, the connecting member 4 may be provided with a locking groove, and an end of the rubber is locked in the locking groove. Specifically, the end of the rubber 2 is blocked in a blocking groove formed in the connecting member 4 in an excessively hard fit manner, so that the rubber 2 is assembled to the connecting member 4.

In another embodiment, the rotating member is provided with a shaft hole, the rotating shaft 41 includes oppositely arranged elastic members 411, a free end of each elastic member 411 is provided with a limiting flange 412, the elastic members 411 are inserted into the shaft hole, and the limiting flanges 412 are configured to cooperate with edges of the shaft hole to limit the rotating shaft 41 from being separated from the shaft hole.

Specifically, for the rotating shaft 41 on the connecting member 4, two elastic members 411 may be disposed opposite to each other with a certain interval between the two elastic members 411. When assembled, the elastic element 411 is deformed by the extrusion of the shaft hole, and after the elastic element 411 is inserted into the shaft hole, the elastic element 411 is reset and the falling of the rotating shaft 41 from the shaft hole is limited by the limit flanging 412. Thus, in the use process, when the user drives the rotating part 3 to rotate reversely, the rotating part 3 moves away from the direction of the mounting opening and drives the rubber 2 to retract through the connecting part 4.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The telescopic rubber is characterized by comprising a shell, a rubber and a rotating part, wherein an installation opening is formed in one end part of the shell, a plurality of first strip-shaped holes which are arranged side by side are formed in a first side wall of the shell, a plurality of second strip-shaped holes which are arranged side by side are formed in a second side wall of the shell, the first strip-shaped holes and the second strip-shaped holes are obliquely arranged relative to the central line of the shell, the oblique directions of the first strip-shaped holes and the second strip-shaped holes are opposite, and the first side wall and the second side wall are oppositely arranged;

2. The telescopic rubber according to claim 1, wherein an end face of the rotating member opposite to the rubber is provided with a second protruding structure, which abuts against the rubber.

3. The telescopic eraser of claim 2, wherein the eraser is fixedly connected to the rotating member, the rotating member being configured to rotate and move the eraser.

4. The telescopic rubber is characterized by comprising a shell, a rubber, a rotating part and a connecting part, wherein an installation opening is formed in one end of the shell, a plurality of first strip-shaped holes which are arranged side by side are formed in a first side wall of the shell, a plurality of second strip-shaped holes which are arranged side by side are formed in a second side wall of the shell, the first strip-shaped holes and the second strip-shaped holes are obliquely arranged relative to the central line of the shell, the oblique directions of the first strip-shaped holes and the second strip-shaped holes are opposite, and the first side wall and the second side wall are oppositely arranged;

5. The telescopic rubber according to claim 4, wherein the connecting part is provided with oppositely arranged claws, and the rubber is clamped between the two claws;

6. The telescopic rubber according to claim 4, wherein the rotating member is provided with a shaft hole, the rotating shaft comprises oppositely arranged elastic members, the free ends of the elastic members are provided with limiting flanges, the elastic members are inserted into the shaft hole, and the limiting flanges are configured to cooperate with edges of the shaft hole to limit the rotating shaft from being separated from the shaft hole.

7. The telescopic rubber according to any one of claims 1-6, wherein first protruding structures are respectively arranged on inner walls of a third side wall and a fourth side wall of the housing, the first protruding structures are close to the mounting opening, the third side wall is arranged opposite to the fourth side wall, and the first side wall and the second side wall are located between the third side wall and the fourth side wall; the rubber is clamped between the two first protruding structures.

8. The telescopic eraser of claim 7, wherein the first side wall has a first extension and the second side wall has a second extension, the first extension and the second extension extend out to the outside of the mounting opening and are suspended, the first extension is also provided with the first bar-shaped hole, and the second extension is also provided with the second bar-shaped hole.

9. The telescopic rubber according to claim 7, wherein the third side wall is provided with a third extension, the fourth side wall is provided with a fourth extension, the third extension and the fourth extension extend out to the outer side of the mounting opening to be arranged in a hanging manner, and free ends of the third extension and the fourth extension are respectively provided with the first protruding structure.

10. Telescopic rubber according to any of claims 1-6, wherein the edges of the spiral ribs are provided with friction portions.