Code scanner capable of adjusting variable pitch through double helixes

Abstract

The utility model relates to a code scanner with a variable pitch adjusted by double helixes. The code scanner comprises a housing; the light source module is arranged in the shell and comprises an LED lamp panel and a condensing lens, a through hole is formed in the middle of the LED lamp panel, lamp beads are arranged on the portions, located on the two sides of the through hole, of the LED lamp panel, and the condensing lens is arranged on the outer sides of the lamp beads; the double-spiral lens module is arranged in the shell and comprises a fixed connecting ring, a double-thread switching cylinder and a telephoto lens; one end of the fixed connecting ring is in threaded connection with the small end of the double-thread adapter cylinder, and the large end of the double-thread adapter cylinder is in threaded connection with the telephoto lens; the code reading device comprises a main control board, a power supply signal board, a SENSOR module and a lens mount, and the SENSOR module and the power supply signal board are electrically connected with the main control board; and the lens seat is arranged on the SENSOR module and penetrates through the mounting bracket to be connected with the other end of the fixed connecting ring. According to the utility model, the problem that various adapter rings with different lengths need to be used when the same lens is assembled at different working distances is solved, the production efficiency is improved, and the material purchasing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of code scanners, in particular to a code scanner with double thread adjustable pitch. Background Art

[0002] In the existing visual product structure of code readers, as the decoded QR codes become smaller and smaller, it is necessary to use a lens with a long focal length and a smaller field of view to take pictures. Due to the characteristics of telephoto and small field of view lenses, the size and length of the lens itself are generally large, which brings certain limitations in structural design and installation. The shell structure will also increase accordingly. Especially when the same lens needs to be installed at different working distances, it is necessary to add a variety of adapters of different lengths between the lens and the sensor module to meet the different optical distances between the lens and the sensor. This brings inconvenience during assembly operations. Each time a working distance is changed, the adapter of the corresponding length needs to be replaced, and the production efficiency is not high, and material procurement is increased, which cannot effectively save material costs.

[0003] Therefore, in order to solve the above problems, it is particularly important to design a new code reader structure that has a dual thread adjustment function and does not require multiple adapter rings to achieve the installation of the same lens at different distances. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a barcode scanner with a double-helix adjustable distance. The double-thread adapter tube on the double-helix lens module has a double-thread adjustment function, and the adjustment of different distances of the same lens can be achieved without using a variety of adapter rings, which solves the problem of needing to use a variety of adapter rings of different lengths to assemble the same lens at different working distances, greatly improving production efficiency and reducing material procurement costs.

[0005] In order to solve the above technical problems, the utility model provides a double-helix adjustable variable-pitch barcode scanner, comprising:

[0006] case;

[0007] A light source module is arranged inside the housing, and includes an LED light board and a focusing lens, wherein a through hole is provided in the middle of the LED light board, lamp beads are arranged on both sides of the through hole on the LED light board, and the focusing lens is arranged outside the lamp beads;

[0008] A double spiral lens module is arranged inside the housing, and comprises a fixed collar, a double thread adapter tube and a telephoto lens; one end of the fixed collar is threadedly connected to the small end of the double thread adapter tube, and the large end of the double thread adapter tube is threadedly connected to the telephoto lens;

[0009] A code reading device is fixed inside the shell through a mounting bracket, and the code reading device includes a main control board, a power signal board, a sensor module and a lens holder. The main control board, the sensor module and the power signal board are all arranged on the mounting bracket, and the sensor module, the power signal board and the main control board are connected through a flexible flat cable; the lens holder is arranged on the sensor module, and the lens holder passes through the mounting bracket and is connected to the other end of the fixed ring.

[0010] In one embodiment of the present utility model, the condenser lens includes four groups, and the condenser lens is a concave-convex lens matching the lamp bead.

[0011] In one embodiment of the present invention, a power data line is also included, and the power data line extends into the shell and is connected to the main control board.

[0012] In one embodiment of the present invention, the double-thread adapter tube is a cylindrical tube, the small end of the cylindrical tube is provided with an internal thread, and the large end of the cylindrical tube is provided with an internal thread.

[0013] In one embodiment of the present invention, the fixing ring is a cylindrical structure, and one end of the cylindrical structure is provided with an external thread.

[0014] In an embodiment of the present invention, the telephoto lens is a telephoto lens with a focal length of 35 / 50 mm and a small field of view, and one end of the telephoto lens is provided with an external thread.

[0015] In one embodiment of the present utility model, the shell includes a bottom shell and an upper shell, the bottom shell is an inclined trapezoidal structure, and the upper shell is an inclined L-shaped structure.

[0016] In an embodiment of the utility model, an indicator light panel is provided on the upper shell; and a heat dissipation channel is provided on the bottom shell.

[0017] In an embodiment of the present invention, a window glass is further provided at one end of the upper shell, and the window glass is arranged on the outer side of the focusing lens.

[0018] In one embodiment of the utility model, a decoding button is provided on the power signal board for triggering the barcode scanner, and a key board adapted to the decoding button is provided on the indicator light panel.

[0019] The above technical solution of the utility model has the following advantages compared with the prior art:

[0020] The utility model discloses a barcode scanner with double spiral adjustment and variable distance. The double-thread adapter tube on the double-spiral lens module has a double-thread adjustment function. The same lens can be adjusted to different distances without using multiple adapter rings. This solves the problem of using multiple adapter rings of different lengths to assemble the same lens at different working distances, greatly improves production efficiency, and reduces material procurement costs. This has a good application in the assembly structure of barcode scanners with small field of view and telephoto lenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0022] Figure 1 It is a structural schematic diagram of a double-helix variable-pitch code scanner in a preferred embodiment of the utility model;

[0023] Figure 2 yes Figure 1 The schematic diagram of the exploded structure of the double-helix variable pitch scanner shown;

[0024] Figure 3 yes Figure 1 The structural schematic diagram of the light source module, the double spiral lens module and the code reading device shown;

[0025] Explanation of the reference numerals in the specification: 1. Shell; 11. Bottom shell; 12. Upper shell; 111. Heat dissipation channel; 121. Indicator light panel; 122. Keypad; 2. Light source module; 21. LED light board; 211. Through hole; 212. Lamp bead; 22. Focusing lens; 3. Double spiral lens module; 31. Fixed ring; 32. Double thread adapter tube; 33. Telephoto lens; 4. Code reading device; 41. Main control board; 42. Power signal board; 421. Decoding button; 43. SENSOR module; 44. Lens mount; 5. Mounting bracket; 6. Power data cable; 7. Window glass. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0027] The utility model discloses a double-helix adjustable variable pitch barcode scanner, comprising: a housing 1; a light source module 2, which is arranged inside the housing 1, and comprises an LED light board 21 and a focusing lens 22, wherein a through hole 211 is arranged in the middle of the LED light board 21, lamp beads 212 are arranged on both sides of the through hole 211 on the LED light board 21, and the focusing lens 22 is arranged on the outside of the lamp beads 212; the focusing lens 22 comprises four groups, and the focusing lens 22 is a concave-convex lens matched with the lamp beads 212. The focusing lens 22 is designed with four groups of concave-convex lenses matched with the lamp beads 212 according to the requirements of the working field size of the barcode reader, and it is installed above the LED light board 21, so that the lamp beads 212 can emit light through the focusing lens 22 after emitting light, forming a bright light spot in the field of view, with good uniformity, and can meet the fill light function required when the barcode reader is working.

[0028] A double spiral lens module 3 is arranged inside the housing 1, and comprises a fixed ring 31, a double thread adapter tube 32 and a telephoto lens 33; one end of the fixed ring 31 is threadedly connected to the small end of the double thread adapter tube 32, and the large end of the double thread adapter tube 32 is threadedly connected to the telephoto lens 33;

[0029] The code reading device 4 is fixed inside the housing 1 through a mounting bracket 5. The code reading device 4 includes a main control board 41, a power signal board 42, a sensor module 43 and a lens holder 44. The main control board 41, the sensor module 43 and the power signal board 42 are all arranged on the mounting bracket 5. The sensor module 43 and the power signal board 42 are connected to the main control board 41 through a flexible flat cable. The lens holder 44 is arranged on the sensor module 43. The lens holder 44 passes through the mounting bracket 5 and is connected to the other end of the fixed ring 31. In this embodiment, the power signal board 42 is connected to the main control board 41 through a flexible flat cable to realize power supply and signal transmission; the sensor module 43 is connected to the main control board 41 through a flexible flat cable to realize signal transmission; the mounting bracket 5 is U-shaped, and the mounting bracket 5 adopts a plastic bracket, which can not only prevent the circuit board from short-circuiting, but also has a certain buffering property when it is locked and fixed.

[0030] Furthermore, it also includes a power data line 6, which extends into the housing 1 and is connected to the main control board 41. The power data line 6 includes a power supply and signal transmission data line of the code reader; the data line connector of the power data line 6 is installed on the housing 1 and connects the main control board 41 and the host to realize power supply and signal transmission.

[0031] Preferably, the double-thread adapter tube 32 is a T-shaped cylindrical tube, the small end of the T-shaped cylindrical tube 36 is provided with an internal thread, and the large end of the T-shaped cylindrical tube is provided with an internal thread.

[0032] Preferably, the fixing ring 31 is a cylindrical structure, and one end of the cylindrical structure is provided with an external thread.

[0033] In this embodiment, the telephoto lens 33 is a telephoto lens with a focal length of 35 / 50 mm and a small field of view. One end of the telephoto lens 33 is provided with an external thread.

[0034] Furthermore, the housing 1 includes a bottom shell 11 and an upper shell 12, wherein the bottom shell 11 is an oblique trapezoidal structure, and the upper shell 12 is an oblique L-shaped structure. The bottom shell 11 is provided with mounting positions at different levels for the double helical lens module 3; the upper shell 12 is provided with mounting positions for mounting the power signal board 42 and the indicator panel 121, the window glass 7, the LED light board 21 and the focusing lens 22.

[0035] In this embodiment, the upper shell 12 is provided with an indicator panel 121; the bottom shell 11 is provided with a heat dissipation channel 111. A window glass 7 is also provided at one end of the upper shell 12, and the window glass 7 is arranged on the outside of the condenser lens 22. The indicator panel 121 is made of PVC adhesive material, and transparent holes are silk-screened on it according to the position of the signal indicator. When the indicator is working, the light state of the indicator can be seen from the metal shell through the holes, so that the indicator can be waterproof and dustproof when it passes through the metal shell.

[0036] In addition, the power signal board 42 is provided with a decoding button 421 for triggering the barcode scanner, and the indicator panel 121 is provided with a key board 122 adapted to the decoding button 421. The decoding button 421 is designed with soft silicone material and is used to realize the decoding trigger button of the barcode reader.

[0037] During the specific installation, firstly, a lens holder 44 for sealing the chip is installed in front of the sensor module 43. The front of the lens holder 44 is provided with an internal thread. After the lens holder 44 is fixed, a fixing ring 31 is tightened into the thread of the lens holder 44, so that a fixed thread assembly module is formed; the next step is to install a double-threaded adapter tube 32 with internal and external threads into the fixing ring 31, and the telephoto lens 33 is also installed on the other end of the adapter tube; since one end of the double-threaded adapter tube 32 is designed as an external thread and the other end is an internal thread, the lens installation When installing different working distances, the distance between the telephoto lens 33 and the SENSOR module 43 can be increased by adjusting the external thread at the front end of the adapter tube to move outward. At the same time, the telephoto lens 33 at the rear end can also be adjusted outward or inward through the internal thread of the double-thread adapter tube 32. In this way, a double-thread distance adjustment function can be formed, which can be satisfied through thread adjustment according to the conventional closest to farthest installation distance from the telephoto lens 33 to the SENSOR module 43. This method provides convenience in the production process and the assembly process is also simple and easy to operate.

[0038] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A double-helix variable-pitch barcode scanner, characterized in that: include: case; A light source module is arranged inside the housing, and includes an LED light board and a focusing lens, wherein a through hole is provided in the middle of the LED light board, lamp beads are arranged on both sides of the through hole on the LED light board, and the focusing lens is arranged outside the lamp beads; A double spiral lens module is arranged inside the housing, and comprises a fixed collar, a double thread adapter tube and a telephoto lens; one end of the fixed collar is threadedly connected to the small end of the double thread adapter tube, and the large end of the double thread adapter tube is threadedly connected to the telephoto lens; A code reading device is fixed inside the shell through a mounting bracket, and the code reading device includes a main control board, a power signal board, a sensor module and a lens holder. The main control board, the sensor module and the power signal board are all arranged on the mounting bracket, and the sensor module, the power signal board and the main control board are connected through a flexible flat cable; the lens holder is arranged on the sensor module, and the lens holder passes through the mounting bracket and is connected to the other end of the fixed ring.

2. A double-helix adjustable variable-pitch barcode scanner according to claim 1, characterized in that: The condenser lens includes four groups, and the condenser lens is a concave-convex lens matched with the lamp bead.

3. The double-helix variable-pitch scanner according to claim 1, characterized in that: It also includes a power data line, which extends into the shell and is connected to the main control board.

4. The double-helix variable-pitch scanner according to claim 1, characterized in that: The double-thread adapter tube is a cylindrical tube, the small end of the cylindrical tube is provided with an internal thread, and the large end of the cylindrical tube is provided with an internal thread.

5. The double-helix variable-pitch scanner according to claim 4, characterized in that: The fixing ring is a cylindrical structure, and one end of the cylindrical structure is provided with an external thread.

6. The double-helix variable-pitch scanner according to claim 5, characterized in that: The telephoto lens is a telephoto lens with a focal length of 35 / 50 mm and a small field of view, and one end of the telephoto lens is provided with an external thread.

7. The double-helix variable-pitch scanner according to claim 1, characterized in that: The shell comprises a bottom shell and an upper shell, the bottom shell is an inclined trapezoidal structure, and the upper shell is an inclined L-shaped structure.

8. The double-helix variable-pitch scanner according to claim 7, characterized in that: The upper shell is provided with an indicator light panel; the bottom shell is provided with a heat dissipation channel.

9. The double-helix variable-pitch barcode scanner according to claim 7, characterized in that: A window glass is also provided at one end of the upper shell, and the window glass is arranged on the outer side of the condenser lens.

10. The double-helix variable-pitch barcode scanner according to claim 8, characterized in that: The power signal board is provided with a decoding button for triggering the barcode scanner, and the indicator light panel is provided with a key board adapted to the decoding button.

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