CN213138336U

CN213138336U - Electric eraser

Info

Publication number: CN213138336U
Application number: CN202021073532.5U
Authority: CN
Inventors: 叶开元; 熊志文
Original assignee: Ningbo Jingcheng Plastic Products Co ltd
Current assignee: Ningbo Jingcheng Plastic Products Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-05-07
Anticipated expiration: 2030-06-10

Abstract

The utility model relates to an electric eraser, which comprises a shell, wherein a battery cavity is arranged in the shell, an end cover arranged at one end of the shell and a LED lamp arranged on the end cover are provided with a display opening for displaying the LED lamp, one side of the end cover facing the battery cavity is provided with a conducting strip, the periphery of the conducting strip is provided with at least one stopper, one side of the stopper, which is far away from the battery cavity, on the inner side wall of the shell is provided with at least one blocking block abutted against the stopper, and the adjacent blocking blocks form an installation opening for the stopper to pass through in a one-to-one correspondence manner; the peripheral wall that the end cover stretches into in the casing is provided with conductive contact, is provided with the circular telegram contact that can supply conductive contact to contradict on the inside wall of casing, and conductive contact and conducting strip are connected with the positive pole and the negative pole of LED lamp respectively, and circular telegram contact and conducting strip are connected with the positive pole and the negative pole of battery respectively. The utility model discloses have and open and close the in-process homoenergetic of LED lamp and guarantee the joint strength of end cover and shell in order to avoid the not hard up effect of end cover.

Description

Electric eraser

Technical Field

The utility model belongs to the technical field of electric actuator's technique and specifically relates to an electronic eraser is related to.

Background

The electric eraser is electrically controlled to rotate as the name implies, so that a device for rubbing paper to erase handwriting by simulating manual use of the eraser is not needed, the eraser is not needed to be repeatedly erased manually, time and labor are saved, the erasing effect is good, and the condition that the paper is damaged due to manual erasing is reduced.

The utility model with the publication number of CN203391531U discloses a multifunctional electric eraser device, which comprises a shell, a motor, an eraser holder, an end cover and a LED light-emitting element, wherein the shell is provided with a battery cavity and a motor cavity seat respectively, the battery is installed in the battery cavity, the front end of the motor cavity seat is also provided with a front cavity seat for accommodating and installing the eraser holder, the motor is installed in the motor cavity seat, a motor shaft of the motor penetrates through the front cavity seat, and the eraser holder is installed in the front cavity seat by being connected with the motor shaft of the motor; and a thread screwing structure and a knob switch structure are respectively arranged between the end cover and the rear end part of the shell, the end cover is screwed on the rear end part of the shell through the thread screwing structure, and the LED light-emitting element is arranged on the end cover and is electrically connected with the knob switch structure so as to realize the control of the connection and disconnection of the working power supply of the LED light-emitting element. Specifically, when a user needs to turn on the LED, the LED is turned on by rotating a lower end cover, and the LED is turned off by reversely rotating the lower end cover. When a user needs to replace the battery, the end cover can be opened by continuously rotating the end cover for one or two circles. The motor is electrically connected with two ends of the battery cavity through electric wires, a button switch is further arranged on the outer side face of the front end of the shell, and the button switch is connected in series on a circuit between the motor and the battery cavity to control the on and off of the motor.

The above prior art solutions have the following drawbacks: the end covers are connected in a threaded connection mode, and the on-off of the LED is controlled in a mode of rotating the end covers, but the tightness between the end covers and the shell is reduced to cause looseness in the process of closing the LED, so that the connection strength of the end covers is affected, and the end covers are likely to be loosened in the using process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an in-process homoenergetic that opens and close the LED lamp can guarantee the joint strength in order to avoid the not hard up electronic eraser of end cover with the shell.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

an electric eraser comprises a shell, wherein a battery cavity for installing a battery is formed in the shell, an end cover arranged at one end of the shell and an LED lamp arranged on the end cover, a display opening for displaying the LED lamp is formed in the end cover, a conducting strip is arranged on one side, facing the battery cavity, of the end cover, at least one limiting block is arranged on the outer periphery of the conducting strip, at least one blocking block abutted against the limiting block is arranged on the inner side wall of the shell and located on one side, away from the battery cavity, of the limiting block, and mounting openings for the limiting blocks to pass through are formed in the adjacent blocking blocks in a one-to-one correspondence mode;

the end cover stretches into the periphery wall in the casing and is provided with conductive contact, be provided with the circular telegram contact that can supply conductive contact to contradict on the inside wall of casing, conductive contact and conducting strip are connected with the positive pole and the negative pole of LED lamp respectively, circular telegram contact and conducting strip are connected with the positive pole and the negative pole of battery respectively.

Through adopting above-mentioned technical scheme, setting up through the stopper hinders conducting strip and casing and breaks away from, and then realize the relative spacing of end cover and casing, the conducting strip can carry out the butt with the battery of battery intracavity installation all the time simultaneously, realize the bright or going out of LED lamp through the mutual butt of conductive contact and circular telegram contact, can guarantee simultaneously at the in-process of rotating the end cover that the stopper carries out the butt with the stopper, compare with threaded connection's mode, the joint strength of end cover and casing can not reduce because of rotating, and then reduce the probability that end cover and casing take place to break away from at the in-process that closes the LED lamp.

The present invention may be further configured in a preferred embodiment as: the stop block is provided with the stopper pivoted that can hinder stopper piece towards one side of battery chamber and lie in casing circumference arbitrary one side, and when hindering the piece and stopper butt, conductive contact and circular telegram contact contactless.

By adopting the technical scheme, the rotation of the end cover can be limited by the arrangement of the blocking block, and when the blocking block is abutted against the limiting block, the end cover can not rotate continuously along the direction; simultaneously, when hindering piece and stopper butt, conductive contact and circular telegram contact for the state in-process of closing the LED lamp, the joint strength of end cover and casing is higher, more is difficult to take place to break away from.

The present invention may be further configured in a preferred embodiment as: the side, facing the battery cavity, of the end cover is provided with a mounting groove for the LED lamp to be inserted and communicated with the display opening, an embedded groove for the conductive contact sheet to be mounted and communicated with the mounting groove is formed in the outer circumferential direction of the end cover and located on the outer side of the mounting opening, and one side, far away from the mounting groove, of the embedded groove penetrates through the outer side wall of the end cover;

at least one limiting lug is arranged on each of two sides of the length direction of the conductive contact piece, and at least one limiting groove for the limiting lug to correspondingly penetrate is arranged on each of two sides of the embedding groove.

Through adopting above-mentioned technical scheme, conveniently change the LED lamp through the mode of pegging graft, realized exempting from the assembly methods of welding formula, assembly efficiency is high, and the setting of spacing lug is spacing to conductive contact piece simultaneously, has improved conductive contact piece's joint strength.

The present invention may be further configured in a preferred embodiment as: and an insulating gasket is arranged between the end cover and the conducting strip.

Through adopting above-mentioned technical scheme, the butt can be avoided conducting contact and conducting strip to the setting up of insulating pad, reduces because conducting contact pine takes off and takes place the butt with the conducting strip and lead to the emergence of the short circuit condition.

The present invention may be further configured in a preferred embodiment as: and one side of the end cover, which faces the conducting strip, is provided with a positioning lug, and the conducting strip is provided with a positioning groove for the positioning lug to penetrate through.

Through adopting above-mentioned technical scheme, the setting that the locating lug and constant head tank mutually support has played the effect of preinstallation to the conducting strip, has improved the joint strength when conducting strip is connected with the end cover simultaneously.

The present invention may be further configured in a preferred embodiment as: a settling tank for installation of the power-on contact piece is arranged on the inner side wall of the shell, and a positioning column penetrating through the power-on contact piece is arranged at the bottom of the settling tank on the shell.

Through adopting above-mentioned technical scheme, wear to locate the mode of circular telegram contact through the reference column and form relatively fixed structure to circular telegram contact and casing, simple to operate, assembly efficiency is high.

The present invention may be further configured in a preferred embodiment as: the circular telegram contact includes the butt piece that supplies conductive contact butt, the butt piece has at least two to keeping away from the protruding portion that just extends along casing extending direction of one side protrusion of casing inside wall, the conductive contact card is located between the adjacent protruding portion.

Through adopting above-mentioned technical scheme, locate the mode between the adjacent bulge through the conductive contact card and strengthened the joint strength when circular telegram contact and conductive contact butt, reduce the circumstances that circular telegram contact and conductive contact took place to break away from and lead to the LED lamp to extinguish in the use.

The present invention may be further configured in a preferred embodiment as: and a gap is formed between the abutting block and the bottom of the settling tank.

Through adopting above-mentioned technical scheme, the setting in clearance has improved the deformation volume that the butt piece takes place deformation, has reduced the stress concentration when circular telegram contact takes place deformation, has improved holistic structural strength and circular telegram contact and conductive contact's joint strength.

The present invention may be further configured in a preferred embodiment as: be provided with the briquetting on the inside wall of casing, be provided with the slot that can supply the reference column to wear to establish on the briquetting.

Through adopting above-mentioned technical scheme, the setting of briquetting has further improved the joint strength of circular telegram contact and casing, has reduced the probability that circular telegram contact takes place to become flexible and produce and rock.

The present invention may be further configured in a preferred embodiment as: the pressing block is provided with a through groove, and the inner side wall of the shell is provided with a positioning block which is arranged in the through groove in a penetrating mode.

Through adopting above-mentioned technical scheme, wear to locate the setting in the wearing groove through the locating piece and further carry on spacingly to the briquetting, reduced the briquetting and taken place the pivoted condition around the reference column, and then further improved the joint strength of circular telegram contact and casing.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the blocking block can be enabled to be abutted against the limiting block in the process of rotating the end cover, compared with the mode of threaded connection, the connection strength of the end cover and the shell cannot be reduced due to rotation, and therefore the probability of separation of the end cover and the shell is reduced in the process of closing the LED lamp;

2. the mode of locating between the adjacent bulge through the conductive contact card has strengthened the joint strength when circular telegram contact and conductive contact butt, reduces the circumstances that circular telegram contact and conductive contact take place to break away from and lead to the LED lamp to extinguish in the use.

Drawings

Fig. 1 is a schematic structural view of the electric eraser.

Fig. 2 is a schematic view of the end cap separated from the housing.

Fig. 3 is a schematic view of the structure of the energized contacts and the housing.

Fig. 4 is an exploded view of the end cap, insulating gasket, conductive contact, conductive strip, and LED lamp.

Fig. 5 is a schematic view of the structure when the conductive contact contacts abut against the energized contact.

In the figure, 1, a housing; 2. an end cap; 13. a button; 3. an LED lamp; 21. a display port; 4. a conductive sheet; 41. a limiting block; 14. a blocking block; 15. an installation port; 5. a conductive contact; 6. a power-on contact; 16. a blocking block; 22. mounting grooves; 23. embedding a groove; 51. a limiting bump; 24. a limiting groove; 7. an insulating spacer; 25. positioning the bump; 42. positioning a groove; 71. a yielding groove; 17. a settling tank; 18. a positioning column; 61. a threading slot; 62. a butting block; 63. a projection; 8. briquetting; 81. a slot; 82. a groove is arranged in a penetrating way; 19. and (5) positioning the blocks.

Detailed Description

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

Referring to fig. 1, for the utility model discloses an electric eraser, it includes casing 1, and the one end of casing 1 is provided with end cover 2, and the other end is provided with the eraser, is provided with the battery chamber of supplying battery installation and drives eraser 11 pivoted motor (not shown) in the casing 1, and casing 1 is provided with outward to be used for pressing down in order to control motor pivoted button 13. The battery is arranged in the battery cavity and presses the button 13 on the outer side of the shell 1, so that the battery can drive the motor to rotate and drive the eraser 11 to rotate, and the basic function of the electric eraser 11 is realized. In order to improve the functionality of the electric eraser 11, the end cover 2 is provided with the LED lamp 3, the end cover 2 is provided with a display opening 21 for displaying the LED lamp 3, and the LED lamp 3 can be turned on and off by rotating the end cover 2.

It should be noted that, for the convenience of production and installation, the housing 1 is divided into a left housing and a right housing in this embodiment, and the left housing and the right housing are connected by means of clamping.

Referring to fig. 1 and 2, the end cover 2 abuts against one end of the casing 1 far away from the eraser 11, the end cover 2 partially penetrates through the casing 1, one side of the end cover 2 facing the battery cavity is connected with a conducting strip 4 through a bolt, and at least one limiting block 41 is arranged on the outer periphery of the conducting strip 4.

Referring to fig. 2 and 3, at least one blocking piece 14 abutted to the limiting block 41 is arranged on the inner side wall of the housing 1 and on the side of the limiting block 41 away from the battery cavity, and mounting openings 15 for the limiting blocks 41 to pass through are formed between the adjacent blocking pieces 14 in a one-to-one correspondence manner. In the present embodiment, two stoppers 41 are provided on the outer circumferential direction of the conductive plate 4, and similarly, two mounting openings 15 are provided corresponding to the stoppers 14.

End cover 2 stretches into the periphery wall in casing 1 and is provided with conductive contact 5, be provided with the circular telegram contact 6 that can supply conductive contact 5 to contradict on the inside wall of casing 1, conductive contact 5 and conducting strip 4 are connected with the positive pole and the negative pole of LED lamp 3 respectively, circular telegram contact 6 and conducting strip 4 are connected with the positive pole and the negative pole of battery respectively, what need notice here is, conducting strip 4, conductive contact 5 and circular telegram contact 6's polarity all can change according to actual conditions, and the here is no longer repeated.

The blocking piece 14 faces one side of the battery cavity and is provided with a blocking piece 16 which can block the rotation of the limiting block 41 at any side of the circumferential direction of the shell 1, the side of the shell 1 far away from the eraser 11 is taken as a main view direction, and the blocking piece 16 is positioned in the clockwise direction of the blocking piece 14. Note that the conductive contact 6 is provided in the counterclockwise direction of the blocking piece 16, and when the blocking piece 16 abuts against the stopper 41, the conductive contact 5 is separated from the conductive contact 6 without contact.

Referring to fig. 2 and 4, a mounting groove 22 for the LED lamp 3 to be inserted and communicated with the display opening 21 is formed in one side of the end cover 2 facing the battery cavity, an embedded groove 23 for the conductive contact piece 5 to be mounted and communicated with the mounting groove 22 is formed in the outer periphery of the end cover 2 and located on the outer side of the mounting groove 22, and one side, far away from the mounting groove 22, of the embedded groove 23 penetrates through the outer side wall of the end cover 2. The conductive contact piece 5 is installed in the installation groove 22 along the extension direction of the installation groove 22, and at least one limiting bump 51 is arranged on two sides of the conductive contact piece 5 in the length direction. Correspondingly, at least one limiting groove 24 for the limiting lug 51 to penetrate through is arranged on the end cover 2 and positioned on two side walls of the embedding groove 23. At least one indicates that spacing lug 51 can set up in one side of conductive contact 5 promptly, also can set up in the both sides of conductive contact 5, can carry out corresponding the setting according to actual conditions, and this place is no longer repeated.

It should be noted that the conductive contact 5 and the pin of the LED lamp 3 may be electrically connected by abutting, or may be further fixed by welding.

Therefore, in order to avoid the short circuit caused by the contact between the conductive contact 5 and the conductive sheet 4, an insulating gasket 7 is provided between the end cap 2 and the conductive sheet 4, and the insulating gasket 7 may be made of rubber or plastic. Meanwhile, due to the arrangement of the insulating gasket 7, the conducting strip 4, the insulating gasket 7 and the end cover 2 are difficult to align in the process of being fixed by bolts. Therefore, the end cap 2 is provided with a positioning protrusion 25 on one side facing the conductive sheet 4, the conductive sheet 4 is provided with a positioning groove 42 for the positioning protrusion 25 to penetrate through, and correspondingly, the insulating gasket 7 is provided with a yielding groove 71 for the positioning protrusion 25 and the pin of the LED lamp 3 to penetrate through.

Referring to fig. 3, a settling tank 17 for installing the power contact 6 is provided on the inner side wall of the casing 1, and a positioning column 18 penetrating through the power contact 6 is provided on the casing 1 and at the bottom of the settling tank 17. The energized contact 6 further includes an abutting block 62 for abutting the conductive contact 5, a gap is formed between the abutting block 62 and the bottom of the settling tank 17, the abutting block 62 has at least two protruding portions 63 protruding to one side far away from the inner side wall of the housing 1 and extending along the extension direction of the housing 1, and the conductive contact 5 can be clamped between the adjacent protruding portions 63 (as shown in fig. 5). Meanwhile, in order to match the conductive contact 6, the side of the conductive contact 5 close to the conductive contact 6 is arc-shaped. In the process of rotating end cover 2, conducting contact 5 and the bulge 63 butt of circular contact 6 and make butt piece 62 to the one side deformation that is close to the tank bottom of subsider 17, when conducting contact 5 card was located between adjacent bulge 63, just can rotate if will continue to rotate end cover 2 and need overcome the deformation of circular contact 6, and then increase the joint strength between end cover 2 and the casing 1 in the use, reduce the not hard up between end cover 2 that the mistake touched the lead to and the casing 1.

Further, in order to improve the installation strength of the power-on contact 6, a pressing block 8 is arranged on the inner side wall of the shell 1, and a slot 81 through which the positioning column 18 can penetrate is formed in the pressing block 8. Meanwhile, the pressing block 8 is provided with through grooves 82 on both sides thereof, and the inner side wall of the housing 1 is provided with positioning blocks 19 penetrating the through grooves 82. The through contact 6 can be firmly limited on the shell 1 through the relative fixation between the pressing block 8 and the shell 1, and the connection strength between the shell 1 and the pressing block 8 can be further improved in a mode of melting the positioning column 18 in order to further improve the fixing effect of the pressing block 8 for fixing the through contact 6.

The implementation principle of the embodiment is as follows:

when the LED lamp 3 of the electric eraser 11 needs to be switched from the open state to the closed state, the end cover 2 is rotated clockwise to separate the electrified contact piece 6 from the conductive contact piece 5 until the limiting block 41 abuts against the blocking block 16;

on the contrary, when the LED lamp 3 of the electric eraser 11 needs to be switched from the off state to the on state, the end cover 2 is rotated anticlockwise to enable the conductive contact piece 5 to be contacted with the electrified contact piece 6;

when the end cover 2 needs to be detached, the end cover 2 can be pulled out only by continuing to rotate the end cover 2 anticlockwise until the limiting block 41 is aligned with the mounting opening 15.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an electric eraser, includes casing (1), be provided with the battery chamber that supplies the battery installation in casing (1), set up in end cover (2) of casing (1) one end and set up LED lamp (3) on end cover (2), be provided with show mouth (21) that supply LED lamp (3) show on end cover (2), its characterized in that: one side, facing the battery cavity, of the end cover (2) is provided with a conducting strip (4), the periphery of the conducting strip (4) is provided with at least one limiting block (41), at least one blocking block (14) abutted against the limiting block (41) is arranged on the inner side wall of the shell (1) and located on one side, facing away from the battery cavity, of the limiting block (41), and mounting openings (15) through which the limiting blocks (41) can correspondingly pass are formed in adjacent blocking blocks (14);

end cover (2) stretch into the periphery wall in casing (1) and are provided with conductive contact (5), be provided with circular telegram contact (6) that can supply conductive contact (5) to contradict on the inside wall of casing (1), conductive contact (5) and conducting strip (4) are connected with the positive pole and the negative pole of LED lamp (3) respectively, circular telegram contact (6) and conducting strip (4) are connected with the positive pole and the negative pole of battery respectively.

2. The electric eraser according to claim 1, wherein: the blocking piece (14) faces one side of the battery cavity and is arranged on any one side of the circumferential direction of the shell (1), a blocking piece (16) capable of blocking the limiting block (41) from rotating is arranged, and when the blocking piece (16) is abutted against the limiting block (41), the conductive contact piece (5) is not contacted with the power-on contact piece (6).

3. The electric eraser according to claim 1, wherein: a mounting groove (22) for inserting the LED lamp (3) and communicating with the display opening (21) is formed in one side, facing the battery cavity, of the end cover (2), an embedded groove (23) for mounting the conductive contact piece (5) and communicating with the mounting groove (22) is formed in the outer circumferential direction of the end cover (2) and located on the outer side of the mounting opening (15), and one side, far away from the mounting groove (22), of the embedded groove (23) penetrates through the outer side wall of the end cover (2);

at least one limiting lug (51) is arranged on two sides of the conductive contact piece (5) in the length direction, and at least one limiting groove (24) for the limiting lug (51) to correspondingly penetrate is arranged on two sides of the embedding groove (23).

4. The electric eraser according to claim 1, wherein: an insulating gasket (7) is arranged between the end cover (2) and the conducting strip (4).

5. The electric eraser according to claim 1, wherein: one side of the end cover (2) facing the conducting strip (4) is provided with a positioning lug (25), and the conducting strip (4) is provided with a positioning groove (42) for the positioning lug (25) to penetrate through.

6. The electric eraser according to claim 1, wherein: a settling tank (17) for installing the power-on contact piece (6) is arranged on the inner side wall of the shell (1), and a positioning column (18) penetrating through the power-on contact piece (6) is arranged on the shell (1) and located at the bottom of the settling tank (17).

7. The electric eraser according to claim 6, wherein: circular telegram contact (6) are including butt piece (62) that supplies conductive contact (5) butt, butt piece (62) have at least two to keeping away from one side protrusion of casing (1) inside wall and along bulge (63) of casing (1) extending direction, conductive contact (5) card is located between adjacent bulge (63).

8. The electric eraser according to claim 7, wherein: a gap is arranged between the abutting block (62) and the bottom of the settling tank (17).

9. The electric eraser according to claim 6, wherein: be provided with briquetting (8) on the inside wall of casing (1), be provided with slot (81) that can supply reference column (18) to wear to establish on briquetting (8).

10. The electric eraser according to claim 9, wherein: the pressing block (8) is provided with a through groove (82), and the inner side wall of the shell (1) is provided with a positioning block (19) which is arranged in the through groove (82) in a penetrating mode.