Locking structure suitable for single-page switching device of needle printer
By using components such as a first pin, a second pin, an arc groove, and a spring in the single-page switching device of a dot matrix printer, a simple structure is used to lock the switching handle, which solves the problems of complex locking structures and difficult maintenance in existing technologies, reduces production costs, and extends service life.
Patent Information
- Application Number
- CN202520125799.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-01-20
AI Technical Summary
The existing locking structure of the single-page switching device for dot matrix printers is complex, resulting in high mold opening costs, short service life, high maintenance costs, and difficulty in maintenance.
Using components such as a first pin, a second pin, an arc groove, a spring, and a lower shaft, the switching handle is locked through a simple structure. The spring force is used to lock the switching handle in two working positions, reducing production costs and facilitating maintenance.
This achieves low-cost production and extended service life, while facilitating maintenance and replacement, thus improving the reliability and lifespan of the equipment.
Smart Images
Figure CN223631263U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dot matrix printer technology, and in particular to a locking structure suitable for a single-page switching device of a dot matrix printer. Background Technology
[0002] Dot matrix printers are mainly used for copying various documents. Their function is something that inkjet printing and laser printing technologies cannot achieve. Dot matrix printers use pressure-sensitive dot matrix printers. The needles in the print head strike the carbon paper. When printing, the print needles pop out and print the ink from the ribbon onto the paper. During the printing process, the needles continuously apply pressure to the paper, which can make multiple layers of carbon paper print the same effect. Therefore, in addition to the text on the first sheet coming from the ink of the ribbon, the text on the lower sheets will also be displayed at the same time, thus realizing multi-copy printing.
[0003] The locking structure of existing dot matrix printer single-page switching devices usually has an elastic deformation feature designed on the switching handle. The locking of the switching handle position is achieved by using the elastic deformation feature and its cooperating parts. This part structure is complex, the mold opening cost is high, and the service life is short. It is difficult to repair after damage, and the only option is to replace the switching handle, which results in high maintenance costs.
[0004] Therefore, there is an urgent need for a locking structure suitable for single-page switching devices in dot matrix printers to solve the above technical problems. Utility Model Content
[0005] The purpose of this utility model is to overcome the problems in the background technology and provide a locking structure suitable for the single-page switching device of a dot matrix printer. Through a simple structural method, the working position of the switching handle is locked, the mold opening cost is low, and it is easy to repair after damage, which helps to increase the service life.
[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a locking structure suitable for a single-page switching device of a dot matrix printer, comprising a first pin, a second pin, and an arc groove disposed on a wall panel, wherein the arc groove is located between the first pin and the second pin, a switching handle is rotatably sleeved on the second pin, and an extension is integrally provided at the lower end of the switching handle, one end of a lower shaft is fixedly connected to the extension, and the other end of the lower shaft slides into the arc groove;
[0007] A spring is movably disposed between the first pin and the arc groove, with one end of the spring connected to the first pin and the other end connected to the lower shaft.
[0008] Furthermore, the center line connecting the first pin and the second pin passes through the arc groove.
[0009] Further, the spring is respectively provided with hooks at two ends, the two hooks are respectively hung on the first pin shaft and the lower shaft, when the lower shaft moves in the circular arc groove, the spring moves along with the lower shaft.
[0010] Further, the first pin shaft is provided with a limiting protrusion, the limiting protrusion is used for blocking the hook of the end of the spring, in the working process, the end of the spring can be prevented from being separated from the first pin shaft, the reliability of the structure of the device is greatly ensured.
[0011] Further, the working process of the switching handle includes two working positions of a lower working position and an upper working position, when the switching handle is located at the lower working position, the lower shaft is located below the center line, when the switching handle is located at the upper working position, the lower shaft is located above the center line.
[0012] Further, the included angle between the extension and the switching handle is an acute angle.
[0013] Further, a handle is fixedly arranged at the upper end of the switching handle, the outer surface of the handle is wrapped with a layer of soft material, and the soft material can protect the hands of the user.
[0014] Compared with the prior art, the device has the beneficial effects that: the device is provided with a first pin shaft, a second pin shaft, a circular arc groove, a spring and a lower shaft, through a simple structure, the locking of the two working positions of the switching handle is realized under the action of the spring elasticity, the production mold opening cost is low, the service life is long, and the device is convenient to maintain and replace. BRIEF DESCRIPTION OF DRAWINGS
[0015] The drawings are used to provide a further understanding of the device, and constitute a part of the specification, are used together with the embodiments of the device to explain the device, and do not constitute a limitation on the device.
[0016] Figure 1 It is a whole structure schematic view of the device.
[0017] Figure 2 It is a front view structure schematic view of the device.
[0018] Figure 3 It is a side cross-section structure schematic view of the device.
[0019] Figure 4 It is a part structure schematic view of the device
[0020] In the drawings, the reference signs are as follows: 1, wallboard; 2, first pin shaft; 3, second pin shaft; 4, limiting protrusion; 5, circular arc groove; 6, switching handle; 7, extension; 8, lower shaft; 9, spring; 10, handle; 11, center line. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail with the help of the drawings and examples. Of course, the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.
[0022] Embodiment: as Figures 1-3 The embodiment provides a locking structure suitable for a single-leaf switching device of a needle printer, which comprises a first pin shaft 2, a second pin shaft 3 and a circular arc groove 5 arranged on a wall plate 1, the circular arc groove 5 is located between the first pin shaft 2 and the second pin shaft 3, a switching handle 6 is rotatably sleeved on the second pin shaft 3, that is, the switching handle 6 can reciprocatingly rotate with the second pin shaft 3 as the center, an extension part 7 is integrally arranged at the lower end of the switching handle 6, the included angle between the extension part 7 and the switching handle 6 is an acute angle, one end of a lower shaft 8 is fixedly connected to the extension part 7, the other end of the lower shaft 8 slides into the circular arc groove 5, the lower shaft 8 will slide in the circular arc groove 5 in the rotating process of the switching handle 6, a spring 9 is movably arranged between the first pin shaft 2 and the circular arc groove 5, the main body of the spring 9 is suspended and is attached to the side wall of the wall plate 1, one end of the spring 9 is connected to the first pin shaft 2, and the other end of the spring 9 is connected to the lower shaft 8, a handle 10 is fixedly arranged at the upper end of the switching handle 6, and the outer surface of the handle 10 is wrapped with a layer of soft material, which can protect the hands of the user.
[0023] The center line 11 of the first pin shaft 2 and the second pin shaft 3 passes through the circular arc groove 5, the spring 9 is provided with hooks at both ends, the two hooks are respectively hung on the first pin shaft 2 and the lower shaft 8, the first pin shaft 2 is provided with a limiting protrusion 4, the limiting protrusion 4 is used for blocking the hooks at the ends of the spring 9, the end part of the spring 9 can be prevented from being separated from the first pin shaft 2 in the working process, and the reliability of the structure of the device is beneficially ensured, when the lower shaft 8 moves in the circular arc groove 5, the spring 9 moves together with the lower shaft 8, the working process of the switching handle 6 comprises two working positions, that is, a lower working position and an upper working position, when the switching handle 6 is located at the lower working position, the lower shaft 8 is located below the center line 11, when the switching handle 6 is located at the upper working position, the lower shaft 8 is located above the center line 11, when the switching handle 6 rotates to the upper working position or the lower working position, the rotating handle 6 can be locked at the current position under the action of the elasticity of the spring 9.
[0024] The specific working principle is as follows: the handle 10 is pulled to the right, the handle 10 drives the switching handle 6 to rotate clockwise, the extension part 7 of the switching handle 6 drives the lower shaft 8 to slide upwards in the circular arc groove 5, when the lower shaft 8 is located above the center line 11, the lower shaft 8 collides with the upper edge of the circular arc groove 5 under the action of the elasticity of the spring 9, at this time, the switching handle 6 is in the upper working position, in this working position, the switching handle 6 is in the locked state under the joint action of the spring 9 and the upper edge of the circular arc groove 5;
[0025] Similarly, the handle 10 is turned to the left, the handle 10 drives the switching handle 6 to rotate counterclockwise, the extension 7 of the switching handle 6 drives the lower shaft 8 to slide downward in the circular arc groove 5, when the lower shaft 8 is below the center line 11, the lower shaft 8 hits the lower edge of the circular arc groove 5 under the action of the spring 9, at this time, it is the lower working position of the switching handle 6, in the working position, the switching handle 6 is in the locked state under the joint action of the spring 9 and the upper edge of the circular arc groove 5.
[0026] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A locking structure for a single sheet switching device of a needle printer, characterized in that, The utility model relates to a wallboard switch, including first pin shaft (2) set on wallboard (1), second pin shaft (3) and circular arc groove (5), circular arc groove (5) is located between first pin shaft (2) and second pin shaft (3), the second pin shaft (3) is rotatably sleeved with switching handle (6), switching handle (6) lower end is integrally provided with extension (7), one end of lower shaft (8) is fixedly connected on extension (7), the other end of lower shaft (8) is slidably inserted into circular arc groove (5); Spring (9) is movably arranged between first pin shaft (2) and circular arc groove (5), one end of spring (9) is connected with first pin shaft (2), the other end is connected with lower shaft (8).
2. The locking structure for the single sheet switching device of the pin printer according to claim 1, wherein The center line (11) of first pin shaft (2) and second pin shaft (3) passes through circular arc groove (5).
3. The locking structure for the single sheet switching device of the needle printer according to claim 2, wherein Both ends of spring (9) are respectively provided with hooks, and the two hooks are respectively hung on first pin shaft (2) and lower shaft (8).
4. The locking structure for the single sheet switching device of the pin printer according to claim 3, wherein Limiting protrusion (4) is arranged on first pin shaft (2), and the limiting protrusion (4) is used for blocking the hook of the end of spring (9).
5. The locking structure for the single sheet switching device of the pin printer according to claim 4, wherein The working process of switching handle (6) includes two working positions of lower working position and upper working position, when switching handle (6) is located at lower working position, lower shaft (8) is located below center line (11), when switching handle (6) is located at upper working position, lower shaft (8) is located above center line (11).
6. The locking structure for the single sheet switching device of the pin printer according to claim 1, wherein The included angle between extension (7) and switching handle (6) is an acute angle.
7. The locking structure for the single sheet switching device of the pin printer according to claim 1, wherein A handle (10) is fixedly arranged on the upper end of the switching handle (6), and the outer surface of the handle (10) is wrapped with a layer of soft material.