CN217024622U - Paper feeder of printer - Google Patents

Abstract

A printer paper feeder is characterized by comprising a bottom frame and an elastic clamping assembly, wherein the bottom frame is U-shaped and comprises a bottom plate and side walls extending upwards from two ends of the bottom plate; the two sets of elastic clamping assemblies are respectively arranged on the corresponding side walls, each set of elastic clamping assembly comprises a shaft lever, a support ring, a spring and a tension spring, and the shaft lever can be arranged on the side walls in a turnover manner; the support ring can be arranged at one end of the shaft lever in a sliding way and can rotate; one end of the tension spring is connected with the other end of the shaft lever, and the other end of the tension spring is connected with the side wall; at least one of the side walls is provided with a position switch, and the position switch is provided with a touch head which extends upwards and is abutted against the bottom of the shaft rod. Independent of the setting of printer, overall structure is simple, has the paper shortage warning function, does benefit to the maintenance.

Description

Paper feeder of printer

Technical Field

The present invention relates to a printer accessory, and more particularly, to a paper supply device for a printer.

Background

Small portable printers are provided with a paper slot, roll paper for printing can be placed in the paper slot, and after the roll paper is used up, a cover plate can be opened to refill the paper, and the printer documents refer to the Chinese patent application with application number 201410649444.8, namely, a thermal printer and a paper placing device thereof (application publication number CN 104442015A).

In office paper printers, printed paper is large, such as A4, paper feeders specially used for placing A4 printing paper are basically provided, and paper feeders suitable for placing roll paper are also disclosed, such as Chinese utility model patent ZL201020282418.3 paper placing device for inkjet printer (No. CN201824651U), the structure of the paper feeder is complex, and the paper feeder and the printer body are integrally arranged, so that the fault maintenance is troublesome.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to provide a printer paper feeder that is independent of a printer body and can remind of paper shortage in view of the above technical situation.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a printer paper feeder is characterized by comprising a chassis and an elastic clamping assembly, wherein the chassis is generally U-shaped and comprises a bottom plate and side walls extending upwards from two ends of the bottom plate; the elastic clamping components are two sets and are respectively arranged on the corresponding side walls, and each set of elastic clamping component comprises

The shaft lever can be arranged on the side wall in a turnover way;

the support ring can be arranged at one end of the shaft rod in a sliding way and can rotate;

a spring, which is sleeved on the shaft lever and always forces the support ring to move in a direction of separating from the side wall;

one end of the tension spring is connected with the other end of the shaft lever, and the other end of the tension spring is connected to the side wall;

at least one of the side walls is provided with a position switch, the position switch is provided with a touch head which extends upwards, and the touch head is abutted against the bottom of the shaft lever; in the using state, the support ring is matched with the middle parts of the two ends of the roll paper and is driven by the spring to press the roll paper, and in the roll paper feeding state, the support ring rotates along with the roll paper.

Furthermore, one end of the shaft lever is provided with a supporting seat protruding from the shaft lever, one end of the spring abuts against the back face of the supporting ring, the other end of the spring abuts against the supporting seat, and the contact head abuts against the bottom of the supporting seat. One of the supporting seats is used as a spring seat, and the other supporting seat is used as an abutting part of the touch head.

In order to adapt to the assembly of the roll paper inner ring hole with different inner diameters, the front end face of the support ring is provided with a plurality of convex rings which can be matched with the roll paper inner ring holes with different inner diameters, and the convex rings are arranged in concentric circles and gradually protrude from outside to inside to form a tower shape.

Further, the afterbody of axostylus axostyle has the hole, the lateral wall has the breach groove, and the port in this breach groove transversely is equipped with the pivot, and this pivot runs through the hole through the axostylus axostyle, the extension spring locate the lateral surface of lateral wall, position switch locate the breach inslot and be located the medial surface of lateral wall. The tension spring and the position switch are respectively positioned on two sides of the side wall and are not interfered with each other.

Compared with the prior art, the utility model has the advantages that: the spring acts on the support ring, force the support ring to block into and compress tightly the roll paper, order about the scroll centering the horizontal central position of feeder, the support ring supports the stock form, avoid scroll hole and the less axostylus axostyle direct contact of diameter, the support ring is less with axostylus axostyle fit clearance and coefficient of friction, ensure that stock form running resistance is less and steady output, simultaneously, when the volume of a roll paper section of thick bamboo paper reduces to approaching and does not have sometimes, draw spring effect axostylus axostyle upset perk, the touching head of position switch removes supporting and bounceing of axostylus axostyle, trigger the warning signal, remind the user roll paper to change the roll paper. Independent of the printer, the whole structure is simple, the maintenance is facilitated, and the paper shortage reminding function is realized.

Drawings

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

Fig. 2 is a partially exploded view of fig. 1.

FIG. 3 is a reference diagram of the usage status of the embodiment.

Detailed Description

The utility model is described in further detail below with reference to the following examples of the drawings.

As shown in fig. 1 and 2, the paper feeder of the printer of the present embodiment is characterized by comprising a chassis 1 and an elastic clamping assembly, wherein the chassis 1 is substantially in a right-angled U shape and comprises a bottom plate 11 and side walls 12 extending upwards from two ends of the bottom plate 11; the two sets of elastic clamping components are respectively arranged on the corresponding side walls 12.

Each set of elastic clamping assembly comprises a shaft lever 3, a support ring 2, a spring 6 and a tension spring 4, wherein the shaft lever 3 can be arranged on the side wall 12 in a turnover way; specifically, the rear portion of the shaft 3 has a shaft hole 32, the side wall 12 has a notch 15, the end of the notch 15 is transversely provided with a shaft pin 14, the shaft pin 14 passes through the shaft hole 32 of the shaft 3, and one end of the shaft 3 has a support seat 31 protruding from the shaft 3.

The support ring 2 is slidably arranged at one end of the shaft lever 3 and can rotate; the front end face of the support ring 2 is provided with a plurality of convex rings 21 which can be matched with inner rings of roll paper with different inner diameters, and the convex rings 21 are arranged in concentric circles and gradually protrude from outside to inside to form a tower shape. The convex rings 21 with different inner diameters are matched with the inner diameters of the roll paper with different inner diameters, and the convex rings with large inner diameters cannot be assembled in a dry mode.

The spring 6 is sleeved on the shaft lever 3 and always forces the support ring 2 to move in the direction of separating from the side wall 12; one end of the spring 6 is propped against the back surface of the support ring 2, and the other end is propped against the support seat 31.

One end of the tension spring 4 is connected to the other end of the shaft lever 3 and is located on the outer side surface of the side wall 12, and the other end is connected to the side wall 12.

The position switch 5 is disposed in the notch 15 and on the inner side surface of the side wall 12. The position switch 5 has a contact head 51 projecting upward, and the contact head 51 abuts against the bottom of the support base 31.

As shown in fig. 3, in the use state, the support ring 2 is fitted with the inner ring holes in the middle of the two ends of the roll paper, and the spring 6 drives the roll paper to press the roll paper tightly, so that the roll paper is centered at the transverse center of the feeder from left to right, and in the roll paper feeding state, the support ring 2 rotates along with the roll paper. When the paper volume of the roll paper cylinder is reduced to be close to the paper volume, the tension spring acts on the shaft lever to turn and tilt (the shaft lever is equivalent to a lever), the touch head of the position switch releases the abutting of the shaft lever to bounce, and a reminding signal is triggered to remind a user to replace the roll paper.

Claims (4)

1. A printer paper feeder is characterized by comprising a chassis (1) and an elastic clamping assembly, wherein the chassis (1) is U-shaped and comprises a bottom plate (11) and side walls (12) extending upwards from two ends of the bottom plate (11); the two sets of elastic clamping components are respectively arranged on the corresponding side walls (12), and each set of elastic clamping component comprises

A shaft lever (3) which is arranged on the side wall (12) in a turnover way;

a support ring (2) which is slidably arranged at one end of the shaft lever (3) and can rotate;

a spring (6) which is sleeved on the shaft lever (3) and always forces the support ring (2) to move in a direction of separating from the side wall (12);

one end of the tension spring (4) is connected with the other end of the shaft lever (3), and the other end is connected with the side wall (12);

at least one of the side walls (12) is provided with a position switch (5), the position switch (5) is provided with a contact head (51) which extends upwards, and the contact head (51) is abutted against the bottom of the shaft lever (3);

in the using state, the support ring (2) is inserted into the middle holes at the two ends of the roll paper in a matching manner, the roll paper is pressed under the driving of the spring (6), and the support ring (2) rotates along with the roll paper in the roll paper feeding state.

2. The printer sheet feeder according to claim 1, wherein the shaft (3) has a support (31) protruding from the shaft (3) at one end, the spring (6) has one end abutting against the back surface of the support ring (2) and the other end abutting against the support (31), and the contact head (51) abuts against the bottom of the support (31).

3. The printer feeder according to claim 1, wherein the front end surface of the support ring (2) has a plurality of convex rings (21) capable of fitting the inner ring holes of the roll paper with different inner diameters, and the plurality of convex rings (21) are arranged in concentric circles and are gradually convex from outside to inside to form a tower shape.

4. The printer paper feeder according to claim 1, wherein the shaft lever (3) has a shaft hole (32) at a tail portion thereof, the side wall (12) has a notch groove (15), a shaft pin (14) is transversely disposed at a port of the notch groove (15), the shaft pin (14) penetrates through the shaft hole (32) of the shaft lever (3), the tension spring (4) is disposed on an outer side surface of the side wall (12), and the position switch (5) is disposed in the notch groove (15) and located on an inner side surface of the side wall (12).

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