CN211518970U

CN211518970U - Cover opening structure of thermal printer

Info

Publication number: CN211518970U
Application number: CN201921635325.1U
Authority: CN
Inventors: 王建立; 林凤联; 林枫
Original assignee: NINGBO JINGXIN TECHNOLOGY CO LTD
Current assignee: NINGBO JINGXIN TECHNOLOGY CO LTD
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-09-18
Anticipated expiration: 2029-09-26

Abstract

A cover opening structure of a thermal printer comprises a first support and a second support, wherein the second support is connected with the first support through an opening and closing mechanism; a gap for printing paper to pass through is formed when the first support and the second support are closed; the opening and closing mechanism is characterized by comprising a sliding block, a button and an elastic reset piece, wherein the sliding block is movably arranged on the first bracket, and the lower end of the sliding block is provided with a barb which is clamped and matched with the clamping hook so as to cover the first bracket and the second bracket; the button can drive the slide block to slide. The button presses the back and drives the slider and remove, and barb on the slider is thrown off with the pothook on the second support, and first support and second support are opened, and the operation is comparatively convenient, and under the closed condition simultaneously, the barb is firm with the pothook joint.

Description

Cover opening structure of thermal printer

Technical Field

The utility model relates to a paper printing apparatus especially relates to the small-size printer of aspect of using and printing the bill.

Background

The thermal printer is generally applied to printing in the aspect of bills, wireless and Bluetooth functions are added for improving the portability of the thermal printer, the thermal printer can print at any time and any place, and the application field is greatly widened.

Chinese utility model patent No. ZL201721786744.6 'a slip cover clamshell portable thermal printer' (CN207579355U), this patent includes epitheca, well epitheca, pivot, well inferior valve and inferior valve, and epitheca and well epitheca constitute last casing subassembly, and well inferior valve and inferior valve constitute down casing subassembly, go up casing subassembly and casing subassembly rear end down through the pivot that can the back-and-forth movement be connected, go up casing subassembly and be formed with a preceding exit slot down between the casing subassembly. Because of under the circumstances that card paper or printing paper used up, need open the printer, this patent is opened and close through the draw-in groove of well inferior valve and the buckle realization of well superior valve.

Similarly, the inventor can also refer to the chinese utility model patent No. ZL201821763588.6, a wechat printer for printing sticky note thermal sensitive paper (publication No. CN209274176U), which realizes locking and unlocking by buttons and card interfaces cooperating with sliding keys.

Although the locking and unlocking operations of the above documents are convenient, the locking and unlocking operations are not firm after long-term use, and are easy to disengage, which brings great troubles to use and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the first technical problem that a thermal printer cover opening structure that the simple operation was opened and close in paper storehouse is provided in addition to foretell technical current situation.

The utility model aims to solve the second technical problem that a structure is opened to thermal printer cover that locking joint is firm is provided to foretell technical situation.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a cover opening structure of a thermal printer includes

A first bracket;

the rear end of the second bracket is movably connected with the first bracket and forms a paper bin with the first bracket, and the front end of the second bracket is connected with the first bracket through an opening and closing mechanism;

a gap for printing paper to pass through is formed when the first support and the second support are closed;

the device is characterized in that the first bracket is provided with a through hole, and the second bracket is provided with a clamping hook which can penetrate through the through hole; the opening and closing mechanism comprises

The sliding block is movably arranged on the first bracket, and the lower end of the sliding block is provided with a barb which is clamped and matched with the clamping hook so as to cover the first bracket and the second bracket;

the button is arranged on one side of the first bracket and can drive the sliding block to slide;

the elastic reset piece always forces the clamping hook of the sliding block and the barb to keep a clamping state;

under the aforesaid button pressing state, can overcome the elasticity drive slider removal of elasticity piece that resets, the slider drives the barb and removes and break away from the pothook, pothook and barb release joint, first support and second support open.

Preferably, the sliding block is arranged at the front end of the first support in parallel with the length direction of the printing head, barbs are formed at two ends of the sliding block respectively, and correspondingly, the two hooks are arranged at two sides of the front end of the first support respectively.

Furthermore, a slide rail which is in sliding fit with the slide block is arranged on the first support, a guide post is arranged on the slide rail, and correspondingly, a guide hole for the guide post to extend into is arranged on the slide block.

Preferably, the slide rail is convexly provided with a spring seat, correspondingly, the slide block is provided with an installation cavity for the spring seat to extend into, the elastic reset piece is a reset spring, one end of the reset spring abuts against the spring seat, and the other end of the reset spring abuts against the inner wall of the installation cavity.

Preferably, the mounting cavity is formed in the middle of the sliding block, the number of the guide holes is at least two and located on two sides of the mounting cavity, correspondingly, the spring seat is located in the middle of the sliding rail, and the number of the guide posts is at least two and located at two ends of the spring seat.

Preferably, a force receiving portion extends in the width direction of one end of the slide rail, and correspondingly, a force applying portion which is matched with the force receiving portion in an abutting mode to drive the slide block is protruded on the inner side of the button.

Compared with the prior art, the utility model has the advantages of: the button presses the back and drives the slider and remove, and barb on the slider is thrown off with the pothook on the second support, and first support and second support are opened, and during the closing, as long as close first support and second support because the existence of elasticity piece that resets, barb and pothook just can natural joint. The operation is convenient, and the joint is firm.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment.

Fig. 2 is a schematic structural view of the embodiment with the upper shell and the lower shell removed.

Fig. 3 is a reverse side view of fig. 2.

Fig. 4 is a reduced exploded view of fig. 2.

Fig. 5 is a partial perspective cross-sectional view of fig. 2.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1, 2 and 3, the thermal printer in this embodiment includes an upper casing 71, a lower casing 72, and a cover,

The printing device comprises a first support 1, a printing head 61, a second support 2, a press roller 62, an opening and closing mechanism, a motor 64 and a transmission gear set 65. The upper case 71 and the lower case 72 are respectively provided outside the first cradle 1 and the second cradle 2, and a printing paper exit 73 is provided between the upper case 71 and the lower case 72, and a cutting blade 63 is provided on the printing paper exit 73.

The rear end of the second bracket 2 is movably connected with the first bracket 1, a paper bin 10 is formed between the second bracket and the first bracket 1, and the front end of the second bracket is connected with the first bracket 1 through an opening and closing mechanism;

as shown in fig. 4, the print head 61 is provided at the front end of the first carriage 1; the press roller 62 can be rotatably arranged at the front end of the second bracket 2, an input gear is arranged at one end of the press roller 62, the motor 64 and the transmission gear set 65 are arranged on the second bracket 2, and the motor 64 is in transmission connection with the output gear through the transmission gear set 65.

In a state where the first holder 1 and the second holder 2 are closed, the print head 61 is close to the platen roller 62 and forms a gap for the printing paper to pass through with the platen roller 62.

In the embodiment, through holes 11 are formed in both sides of the front end of the first bracket 1, and a hook 21 capable of penetrating through the through holes 11 is arranged on the second bracket 2; the opening and closing mechanism comprises a sliding block 4, a button 5, a sliding rail 3 and an elastic reset piece 6.

The sliding block 4 is movably arranged on the first bracket 1, and the lower end of the sliding block is provided with a barb 44 which is in clamping fit with the hook 21 so as to cover the first bracket 1 and the second bracket 2; specifically, a force-bearing portion 43 extends in the width direction of one end of the slider 4, the slider 4 is arranged at the front end of the first support 1 in parallel with the length direction of the print head 61, barbs 44 are formed at two ends of the slider 4, two guide holes 41 and a mounting cavity 42 are formed in the slider 4, and the guide holes 41 are located on two sides of the mounting cavity 42.

The button 5 is arranged on one side of the first bracket 1 and can drive the slider 4 to slide, and specifically, a force application part 51 which is matched with the force bearing part 43 in an abutting mode to drive the slider 4 is protruded on the inner side of the button 5.

The first support 1 is provided with a sliding rail 3 in sliding fit with the sliding block 4, the sliding rail 3 is provided with a guide column 31 and a spring seat 32, the guide column 31 extends into the guide hole 41, and the spring seat 32 extends into the installation cavity 42.

The elastic reset piece 6 always forces the hook 21 of the sliding block 4 and the barb 44 to keep a clamping state; the elastic reset piece 6 in this embodiment is a reset spring disposed in the mounting cavity 42, one end of the reset spring abuts against the spring seat 32, and the other end abuts against the inner wall of the mounting cavity 42.

As shown in fig. 5, when the button 5 is pressed, the slider 4 can be driven to move by overcoming the elastic force of the elastic reset piece 6, the slider 4 drives the barb 44 to move and separate from the hook 21, the hook 21 and the barb 44 are released from clamping, and the first bracket 1 and the second bracket 2 are opened; when the folding bracket is closed, the barb 44 and the hook 21 can be naturally clamped as long as the first bracket 1 and the second bracket 2 are closed due to the elastic resetting piece 6.

Claims

1. A cover opening structure of a thermal printer includes

A first bracket (1);

the rear end of the second support (2) is movably connected with the first support (1) and forms a paper bin (10) with the first support (1), and the front end of the second support is connected with the first support (1) through an opening and closing mechanism;

a gap for printing paper to pass through is formed when the first support (1) and the second support (2) are closed;

the device is characterized in that the first bracket (1) is provided with a through hole (11), and the second bracket (2) is provided with a hook (21) which can penetrate through the through hole (11); the opening and closing mechanism comprises

The sliding block (4) is movably arranged on the first bracket (1), and the lower end of the sliding block is provided with a barb (44) which is in clamping fit with the clamping hook (21) so as to cover the first bracket (1) and the second bracket (2);

a button (5) which is arranged on one side of the first bracket (1) and can drive the sliding block (4) to slide;

the elastic reset piece (6) always forces the hook (21) of the sliding block (4) and the barb (44) to keep a clamping state;

the elastic force that aforementioned button (5) pressed down the state can be overcome and elasticity that elasticity reset piece (6) drives slider (4) and removes, and slider (4) drive barb (44) remove and break away from pothook (21), pothook (21) and barb (44) remove the joint, first support (1) and second support (2) open.

2. The cover opening structure of the thermal printer according to claim 1, wherein the slider (4) is disposed at the front end of the first frame (1) parallel to the length direction of the print head (61) and has barbs (44) formed at both ends thereof, and correspondingly, the two hooks (21) are disposed at both sides of the front end of the first frame (1).

3. The cover opening structure of the thermal printer according to claim 2, wherein the first frame (1) is provided with a sliding rail (3) slidably engaged with the sliding block (4), the sliding rail (3) is provided with a guiding post (31), and correspondingly, the sliding block (4) is provided with a guiding hole (41) for the guiding post (31) to extend into.

4. The cover opening structure of the thermal printer according to claim 3, wherein the sliding rail (3) is provided with a spring seat (32) in a protruding manner, correspondingly, the sliding block (4) is provided with a mounting cavity (42) for the spring seat (32) to extend into, and the elastic restoring member (6) is a restoring spring, one end of which abuts against the spring seat (32) and the other end abuts against the inner wall of the mounting cavity (42).

5. The cover opening structure of the thermal printer according to claim 4, wherein the mounting cavity (42) is formed in the middle of the slider (4), the number of the guide holes (41) is at least two and located on both sides of the mounting cavity (42), correspondingly, the spring seat (32) is located in the middle of the slide rail (3), and the number of the guide posts (31) is at least two and located on both ends of the spring seat (32).

6. The cover opening structure of the thermal printer according to claim 3, wherein a force receiving portion (43) extends in a width direction of one end of the slide rail (3), and correspondingly, a force applying portion (51) is protruded on an inner side of the button (5) to be engaged against the force receiving portion (43) to drive the slider (4).