Thermal head piece fixing device and thermal printer

Abstract

The utility model provides a fixing device of a thermosensitive head piece, which comprises a lower support, a head piece support and an elastic piece, the head piece support is arranged on the lower support, the lower part of the head piece support is rotatably connected with the lower support, and the thermosensitive head piece is arranged on the head piece support; the elastic piece is arranged on the head piece support and provides elastic force to the head piece support. Two first rotating shafts are arranged on the head piece support, a gap is formed between the two first rotating shafts, the part, located on the outer side of the head piece support, of each first rotating shaft is a first rotating part, the part, located on the inner side of the head piece support, of each first rotating shaft is a second rotating part, and the two first rotating parts are rotationally connected with the head piece support; the elastic piece is arranged on the two second rotating parts; the utility model also provides a thermal printer. The fixing device of the thermosensitive head piece is simple in overall structure, convenient and fast installation can be achieved, and assembling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of printer accessories, in particular to a fixing device of thermal head piece and thermal printer. BACKGROUND

[0002] At present, thermal printer is widely used in POS machine, vending machine or cash register, and the thermal printer usually comprises a shell body (or lower shell assembly), a paper bin slot, a paper bin cover (upper shell assembly) and a thermal print head, the paper bin slot has a cavity for containing a thermal paper roll, the paper bin cover is rotatably connected to the shell body, and the thermal paper roll in the paper bin slot can be replaced by opening the paper bin cover, and the print head is installed in the shell body for printing on the thermal paper.

[0003] One of the key factors in the printing process of the printer is the close adhesion of the thermal head piece and the rubber roller, and in order to achieve the close adhesion effect, a spring is usually used to provide elastic force to make the thermal head piece tightly adhere to the rubber roller, when the spring is installed, a head piece bottom plate is needed to be increased, and the spring is arranged between the head piece bottom plate and the head piece support (for installing the thermal head piece), the structure is relatively complex, the cost is high, and other problems such as inconvenience in installation may exist.

[0004] Therefore, the present application provides a fixing device of thermal head piece and a thermal printer. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at solving one of the technical problems in the prior art. To this end, the utility model provides a fixing device of thermal head piece, which directly sets a first rotating shaft on the head piece support to achieve the rotating effect, and provides elastic force by using an elastic member, so that the overall structure is simple and the shortcomings caused by the structure of the head piece bottom plate jointing the head piece support are overcome.

[0006] The utility model further provides a thermal printer.

[0007] According to the fixing device of thermal head piece, the fixing device comprises:

[0008] A lower support;

[0009] A head piece support, which is arranged on the lower support and rotationally connected to the lower support below, and a thermal head piece is arranged on the head piece support;

[0010] An elastic member, which is arranged on the head piece support and provides elastic force to the head piece support;

[0011] The first rotating shafts are located on the outside of the head piece support, and the second rotating parts are located on the inside of the head piece support, the first rotating parts are rotationally connected with the head piece support, and the elastic members are arranged on the second rotating parts.

[0012] The fixing device of the thermal head piece has the advantages that the first rotating shafts are directly arranged on the head piece support to achieve the rotating effect, and the elastic members are used to provide the elastic force, the overall structure is simple, and the head piece support with the elastic members can be mounted on the lower support after the elastic members are arranged on the second rotating parts of the first rotating shafts, so that convenient mounting is achieved and the assembly efficiency is improved.

[0013] In some embodiments of the utility model, the elastic member includes two elastic parts, an abutting part and two elastic arms, the elastic parts are respectively sleeved on the second rotating parts, the abutting part is located between the elastic parts and is used for connecting the elastic parts, and the elastic arms are respectively arranged on the outside of the elastic parts.

[0014] In some embodiments of the utility model, the abutting part is in a U-shaped structure, can not only play a connecting role, but also can produce elasticity to the head piece support, specifically, the elastic arms abut on the lower support, and the abutting part produces elastic force to the head piece support under the action of the elastic part, so that the printing requirement is met.

[0015] In some embodiments of the utility model, the elastic arm has a connecting part connected with the elastic part and extending outward, and a supporting part connected with the connecting part.

[0016] In some embodiments of the utility model, the lower support is provided with rotating positions for mounting the first rotating parts, and the first rotating parts can rotate in the rotating positions.

[0017] In some embodiments of the utility model, the lower support is further provided with avoiding positions for avoiding the installation of the first rotating parts.

[0018] In some embodiments of the utility model, the lower support is provided with clamping position steps for abutting of the elastic arms.

[0019] In some embodiments of the utility model, the clamping position steps are provided with clamping position grooves for embedding of the elastic arms.

[0020] In some embodiments of the utility model, the head piece support is further provided with limiting steps on the two sides of the end away from the first rotating shafts.

[0021] In some embodiments of the utility model, the head piece support further has two extension arms, and the two first rotating shafts are arranged on the two extension arms respectively.

[0022] According to the utility model provides a kind of thermal printer, including fixing device, the fixing device adopts the structure of a kind of thermal head piece fixing device. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings described herein are used to provide further understanding of the utility model, and constitute part of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation on the utility model.

[0024] Among them:

[0025] Figure 1 It is the structure diagram of the fixing device of the utility model thermal head piece;

[0026] Figure 2 It is the utility model Figure 1 Partial enlarged view;

[0027] Figure 3 It is the partial sectional view of the fixing device of the utility model thermal head piece;

[0028] Figure 4 It is the structure diagram of the utility model head piece support Figure 1 ;

[0029] Figure 5 It is the structure diagram of the utility model head piece support Figure 2 ;

[0030] Figure 6 It is the structure diagram of the utility model elastic member.

[0031] Label explanation:

[0032] 10, lower support;11, rotating position;12, avoiding position;13, clamping step;131, clamping groove;20, head piece support;21, first rotating shaft;211, first rotating part;212, second rotating part;22, limiting step;23, extension arm;30, elastic member;31, elastic part;32, abutment part;33, elastic arm;331, connecting part;332, support part;40, thermal head piece. DETAILED DESCRIPTION

[0033] In order to make the technical problem, technical scheme and beneficial effect to be solved by the utility model more clear, explicit, with the drawings and examples, the utility model is further described in detail. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0034] Please refer to Figures 1 to 6 , it is a fixing device of a thermal head piece 40 as an embodiment of the utility model, including lower support 10, head piece support 20, elastic piece 30, head piece support 20 is set up on lower support and its below and lower support 10 rotationally connected, and thermal head piece 40 is set up on head piece support 20, elastic piece 30 is set up on head piece support 20 and provides elastic force to head piece support 20, two first rotation axes 21 are set up on head piece support 20, and there is gap between two first rotation axes 21, the part of first rotation axis 21 located outside head piece support 20 is first rotation part 211, and the part located inside head piece support 20 is second rotation part 212, two first rotation parts 211 are rotationally connected with head piece support 20, and elastic piece 30 is set up on two second rotation parts 212. The fixing device of thermal head piece 40 of the utility model, by directly setting first rotation axis 21 on head piece support 20 for playing the rotation effect, can provide elastic force using elastic piece 30 simultaneously, the overall structure is simple, when installing, first, elastic piece 30 is set up on the second rotation part 212 of two first rotation axes 21, then head piece support 20 with elastic piece 30 is installed to lower support 10, can realize the convenient installation, improves assembly efficiency.

[0035] Specifically, please refer to Figure 2 、 5 , elastic piece 30 includes two elastic parts 31 respectively sleeved on two second rotation parts 212, abutting part 32 for connecting two elastic parts 31 between two elastic parts 31, two elastic arms 33 respectively set up on the outside of two elastic parts 31, abutting part 32 is abutted on head piece support 20, two elastic arms 33 are abutted on lower support 10, wherein, abutting part 32 is U-shaped, not only can play the connecting effect, but also can produce elasticity to head piece support 20, specifically, two elastic arms 33 are abutted on lower support 10, under the action of elastic part 31, abutting part 32 generates elastic force to head piece support 20 to meet the printing demand. Elastic piece 30 is equivalent to two torsional springs and is set side by side and then is connected through a horizontal connecting shaft to form U-shaped abutting part 32 between two torsional springs, of course, the elastic piece 30 of the utility model adopts the overall structure, has provided relatively balanced elastic force.

[0036] The elastic member 30 is installed in the following manner: the elastic member 30 is first installed on the head piece support 20, and then the head piece support 20 with the elastic member 30 and the thermal head piece 40 is installed on the lower support 10; when being installed on the head piece support 20, external force is applied to the two elastic parts 31, so that the two elastic parts 31 are close to each other, the abutting part 32 is deformed, and the elastic member 30 has the elastic force to restore the original state of the two elastic parts 31, that is, the elastic potential energy is stored; the external force is continuously applied, so that the width of the outer side of the two elastic parts 31 is smaller than the distance between the two first rotating shafts 21, the two elastic parts 31 can be moved between the two first rotating shafts 21, the external force is released, and the two elastic parts 31 are respectively sleeved on the two second rotating parts 212 at the same time that the elastic force of the abutting part 32 is released; the installed elastic member 30 can be well limited, and cannot be separated from the head piece support 20 without external force; the whole process is not only convenient to install, but also the elastic member 30 is well limited after installation.

[0037] For details, please refer to Figure 5 , in order to make the elastic member 30 be installed more easily or more conveniently, the elastic arm 33 has a connecting part 331 connected with the elastic part 31 and extending outward, and a supporting part 332 connected with the connecting part 331. The distance between the two supporting parts 332 is increased by the connecting part 331, so as to meet the actual assembly requirement, and the elastic force generated when the two supporting parts 332 are close to each other can be appropriately reduced, so that the elastic member 30 is installed on the head piece support 20 or the lower support 10.

[0038] For details, please refer to Figure 2 、 3 , the lower support 10 is provided with a rotating position 11 for installing the two first rotating parts 211, and the first rotating part 211 can rotate in the rotating position 11; the rotating position 11 can be a semicylindrical groove, and the first rotating part 211 can rotate in the rotating position 11 (which meets the rotating requirement when printing and opening the cover). The lower support 10 is also provided with an avoiding position 12 for avoiding the installation of the first rotating part 211; specifically, the avoiding position 12 can be communicated with the edge of the lower support 10 and the rotating position 11, or an avoiding hole communicated with the rotating position 11 is arranged on the lower support 10, mainly to meet the installation of the head piece support 20 on the lower support 10. When the head piece support 20 with the elastic member 30 is installed, one of the first rotating parts 211 approaches one of the rotating positions 11, and the other first rotating part 211 approaches the other rotating position 11, so that the head piece support 20 and the lower support 10 are connected.

[0039] For details, please refer to Figure 2 、 3The lower support 10 is provided with a clamping step 13 for abutting the elastic arm 33. Specifically, after the head support 20 with the elastic member 30 is installed to the lower support 10, the supporting part 332 can be pried towards the abutting part 32 under the action of an external force, and after the supporting part 332 passes the clamping step 13, the external force is released, and the supporting part 332 can abut on the clamping step 13, and the outer side of the supporting part 332 abuts on the inner side of the lower support 10. In order to improve the stability after installation, the clamping step 13 is provided with a clamping groove 131 for embedding the elastic arm 33, so that the two supporting parts 332 after installation can be better limited.

[0040] Specifically, please refer to Figure 4 、 5 The head support 20 is provided with a limiting step 22 on the two sides away from the first rotating shaft 21, which prevents the head support 20 from rotating excessively under the action of the elastic member 30.

[0041] Specifically, please refer to Figure 4 、 5 The head support 20 is provided with two extension arms 23, and the two first rotating shafts 21 are arranged on the two extension arms 23, respectively. The extension arms 23 and the two first rotating shafts 21 with a spacing are arranged, so that the elastic member 30 can be better installed on the head support 20.

[0042] The utility model also provides a thermal printer, including fixing device, this fixing device adopts a kind of the structure of the fixing device of thermal head piece 40, still including rubber roller being arranged opposite with thermal head piece 40.

[0043] The installation mode of the fixing device of the utility model new thermal head piece is as follows:

[0044] First, the thermal head piece is fixedly installed on the head support, then the two elastic parts of the elastic member are manually sleeved on the two second rotating parts, the head support with the thermal head piece and the elastic member is installed on the rotating position, the elastic arm can be manually swung and installed in the clamping groove of the clamping step, and elastic force is provided to the head support, and the head support can rotate in the rotating position.

[0045] In summary, the fixing device of the utility model new thermal head piece directly sets the first rotating shaft on the head support to play a rotating effect, and elastic force is provided by using the elastic member, the overall structure is simple, when installing, the elastic member is arranged on the second rotating part of the two first rotating shafts, then the head support with the elastic member is installed on the lower support, convenient installation can be realized, and assembly efficiency is improved.

[0046] The utility model has been described exemplarily above in combination with the drawings, obviously, the utility model specific implementation is not limited by the above-mentioned mode, as long as various non-essential improvements of method concept and technical scheme of adopting the utility model or the utility model concept and technical scheme are directly applied to other occasions without improvement, all are within the protection scope of the utility model.

Claims

1. A fixing device for a thermal head sheet, characterized by comprising: The utility model relates to a fixing device of thermal sensitive head piece, comprising: a lower support; a head piece support, which is arranged on the lower support and rotationally connected with the lower support below, and a thermal sensitive head piece is arranged on the head piece support; a resilient member, which is arranged on the head piece support and provides elastic force to the head piece support; two first rotation shafts are arranged on the head piece support, and the first rotation shafts have gaps between them, the parts of the first rotation shafts outside the head piece support are first rotation parts, and the parts of the first rotation shafts inside the head piece support are second rotation parts, the first rotation parts are rotationally connected with the head piece support, and the resilient member is arranged on the second rotation parts.

2. A fixing device for a thermal head sheet according to claim 1, wherein The resilient member comprises two elastic parts, a contact part and two elastic arms, the elastic parts are respectively sleeved on the second rotation parts, the contact part is arranged between the elastic parts and used for connecting the elastic parts, and the elastic arms are respectively arranged outside the elastic parts, the contact part abuts against the head piece support, and the elastic arms abut against the lower support.

3. A fixing device for a thermal head sheet according to claim 2, wherein The elastic arm has a connecting part connected with the elastic part and extending outward, and a supporting part connected with the connecting part.

4. The fixing device for a thermal head sheet according to claim 1, wherein The lower support is provided with rotation positions for mounting the first rotation parts, and the first rotation parts can rotate in the rotation positions.

5. A fixing device for a thermal head sheet according to claim 4, wherein The lower support is also provided with avoiding positions for avoiding the first rotation parts.

6. The fixing device for a thermal head sheet according to claim 2, wherein The lower support is provided with a clamping step for abutting the elastic arms.

7. A fixing device for a thermal head sheet according to claim 6, wherein The clamping step is provided with a clamping groove for embedding the elastic arms.

8. The fixing device for a thermal head sheet according to claim 1, wherein The head piece support is also provided with limiting steps on both sides of the end away from the first rotation shafts.

9. The fixing device for a thermal head sheet according to claim 1, wherein The head piece support also has two extension arms, and the first rotation shafts are respectively arranged on the extension arms.

10. A thermal printer characterized by comprising: The utility model relates to a fixing device of thermal sensitive head piece, comprising: a lower support; a head piece support, which is arranged on the lower support and rotationally connected with the lower support below, and a thermal sensitive head piece is arranged on the head piece support; a resilient member, which is arranged on the head piece support and provides elastic force to the head piece support; two first rotation shafts are arranged on the head piece support, and the first rotation shafts have gaps between them, the parts of the first rotation shafts outside the head piece support are first rotation parts, and the parts of the first rotation shafts inside the head piece support are second rotation parts, the first rotation parts are rotationally connected with the head piece support, and the resilient member is arranged on the second rotation parts. The resilient member comprises two elastic parts, a contact part and two elastic arms, the elastic parts are respectively sleeved on the second rotation parts, the contact part is arranged between the elastic parts and used for connecting the elastic parts, and the elastic arms are respectively arranged outside the elastic parts, the contact part abuts against the head piece support, and the elastic arms abut against the lower support. The elastic arm has a connecting part connected with the elastic part and extending outward, and a supporting part connected with the connecting part. The lower support is provided with rotation positions for mounting the first rotation parts, and the first rotation parts can rotate in the rotation positions. The lower support is also provided with avoiding positions for avoiding the first rotation parts. The lower support is provided with a clamping step for abutting the elastic arms. The clamping step is provided with a clamping groove for embedding the elastic arms. The head piece support is also provided with limiting steps on both sides of the end away from the first rotation shafts. The head piece support also has two extension arms, and the first rotation shafts are respectively arranged on the extension arms. The utility model relates to a fixing device of thermal sensitive head piece, comprising: a lower support; a head piece support, which is arranged on the lower support and rotationally connected with the lower support below, and a thermal sensitive head piece is arranged on the head piece support; a resilient member, which is arranged on the head piece support and provides elastic force to the head piece support; two first rotation shafts are arranged on the head piece support, and the first rotation shafts have gaps between them, the parts of the first rotation shafts outside the head piece support are first rotation parts, and the parts of the first rotation shafts inside the head piece support are second rotation parts, the first rotation parts are rotationally connected with the head piece support, and the resilient member is arranged on the second rotation parts. The resilient member comprises two elastic parts, a contact part and two elastic arms, the

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