A code scanner and electronic device assembly

Abstract

The utility model belongs to the technical field of code scanning equipment discloses a kind of code scanner and electronic equipment components, wherein, code scanner includes support, code scanning module and rotating arm, and support is fixed with sector gear ring;Code scanning module is fixed with rotating shaft, and the rotating shaft is rotatably connected with the support by the code scanning module;The first end of rotating arm is fixed to the rotating shaft, and second end is equipped with single tooth, and the single tooth is engaged with the sector gear ring;Wherein, when external force prompts the code scanning module, the code scanning module and the rotating arm are coaxially rotated relative to the support, and the single tooth moves along the tooth of the sector gear ring gradually, and after stopping prompting, the code scanning module is kept in corresponding angular position by engaging self-locking.The utility model not only can realize the adjustment of code scanning angle, but also can realize mechanical feeling in angle adjustment process.

Description

Technical Field

[0001] This utility model relates to the field of barcode scanning equipment technology, and more particularly to a barcode scanner and electronic equipment components. Background Technology

[0002] In retail and supermarket settings, tablet barcode scanners are typically placed on shelves or in promotional areas to facilitate customers' independent access to product prices, inventory, and other information. These scanners generally consist of a scanning module and a mounting bracket. The scanning module is fixed to the bracket, and the scanner is rigidly connected to the tablet via screw holes on the bracket. Once fixed to the tablet, the scanner can only be positioned at a single scanning angle, making it inconvenient to use and reducing its practicality and adaptability. Utility Model Content

[0003] The purpose of this application is to provide a barcode scanner and electronic device component that not only enables adjustment of the scanning angle, but also provides a mechanical feel during the angle adjustment process.

[0004] The technical solution provided in this application is as follows:

[0005] On the one hand, a barcode scanner is provided, including:

[0006] A bracket, on which a fan-shaped toothed ring is fixed;

[0007] A barcode scanning module is fixedly equipped with a rotating shaft, and the barcode scanning module is rotatably connected to the bracket through the rotating shaft.

[0008] The rotating arm has a first end fixed to the rotating shaft and a second end provided with a single tooth, which meshes with the sector-shaped gear ring.

[0009] When the external force moves the scanning module, the scanning module and the rotating arm rotate coaxially with respect to the bracket, and the single tooth moves step by step along the teeth of the fan-shaped tooth ring. After the movement stops, the scanning module is held in the corresponding angular position by meshing self-locking.

[0010] In some embodiments, when the single tooth meshes with the sector-shaped gear ring, the depth of the single tooth extending into the groove of the sector-shaped gear ring is 0.2 mm to 0.5 mm.

[0011] In some embodiments, a first limiting member and a second limiting member are also included. The first limiting member is fixedly disposed on the bracket, and the second limiting member is fixedly disposed on the barcode scanning module. The first limiting member and the second limiting member cooperate with each other to limit the rotation angle of the barcode scanning module relative to the bracket.

[0012] In some embodiments, the first limiting member is a limiting groove disposed on the bracket;

[0013] The second limiting member is a limiting block disposed on the rotating shaft. The limiting block cooperates with the limiting groove to limit the rotation angle of the scanning module.

[0014] In some embodiments, the barcode scanning module is provided with an anti-rotation groove around the rotating shaft;

[0015] The first end of the rotating arm is provided with a connecting part, and the middle part of the connecting part is provided with a through hole. The rotating shaft passes through the through hole, and the connecting part is accommodated in the anti-rotation groove and does not rotate relative to the anti-rotation groove in the circumferential direction, so that the rotating arm rotates with the rotating shaft and the scanning module.

[0016] In some embodiments, the outer contour of the connecting portion and the inner contour of the anti-rotation groove are non-circular.

[0017] In some embodiments, the scanning module is provided with multiple first limiting ribs around the rotating shaft, and the multiple first limiting ribs surround to form the anti-rotation groove.

[0018] In some embodiments, the inner contour of the through hole includes an arc segment and a right-angle segment, the arc segment being in contact with a portion of the outer peripheral surface of the rotating shaft;

[0019] The anti-rotation groove is also provided with a second limiting rib, which extends into the through hole and abuts against the right-angle segment for limiting.

[0020] In some embodiments, the outer surface of the scanning module has a protruding actuating part for being actuated by an external force.

[0021] On the other hand, an electronic device component is also provided, including an electronic device and a barcode scanner as described in any of the above embodiments, wherein the barcode scanner is mounted on the electronic device.

[0022] The technical advantages of this application are as follows: by setting a sector-shaped toothed ring on the bracket and a rotating arm with a single tooth on the scanning module, not only can the scanning module be adjusted at any angle, but the operator can also accurately perceive each angle change and provide a mechanical feel for rotation adjustment; in addition, by using the meshing self-locking of the single tooth and the sector-shaped toothed ring, the rotation angle of the scanning module can be fixed without the need for additional screws or spring pins, etc., the structure is simple and the number of parts is small. Attached Figure Description

[0023] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0024] Figure 1 This is a schematic diagram of the structure of a barcode scanner provided in one embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the structure of the bracket provided in one embodiment of this application from one viewpoint;

[0026] Figure 3 This is a schematic diagram of the structure of the rotating arm and the sector toothed ring of the barcode scanner provided in one embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the structure of the bracket provided in one embodiment of this application from another perspective;

[0028] Figure 5 This is a schematic diagram of the structure of a barcode scanning module provided in one embodiment of this application from one perspective;

[0029] Figure 6 This is a schematic diagram of the structure of a barcode scanning module provided in one embodiment of this application from another perspective;

[0030] Figure 7 This is a schematic diagram of the structure of a barcode scanning module and a rotating arm provided in one embodiment of this application;

[0031] Figure 8 This is a schematic diagram of the structure of a rotating arm provided in one embodiment of this application.

[0032] Explanation of icon numbers:

[0033] 100, bracket; 110, sector-shaped gear ring; 120, receiving groove; 130, shaft hole; 140, blocking part; 150, first limiting rib; 160, second limiting rib; 200, barcode scanning module; 210, rotating shaft; 220, housing; 230, camera; 240, anti-rotation groove; 250, actuating part; 300, rotating arm; 310, single tooth; 320, connecting part; 321, through hole; 3211, arc segment; 3212, right angle segment; 400, first limiting member; 500, second limiting member. Detailed Implementation

[0034] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application can also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0036] To keep the drawings concise, each drawing only schematically shows the parts relevant to this application, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0037] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0038] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; or they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) are relative rather than absolute when describing the structure and movement of the various components, and are not intended to limit the direction of the product during actual use.

[0040] Furthermore, in the description of this application, ordinal numbers, such as "first" and "second," are used only to distinguish related objects and should not be construed as indicating or implying the relative importance or order between related objects.

[0041] like Figures 1 to 3As shown, in one or more embodiments, this disclosure provides a barcode scanner, including a bracket 100, a barcode scanning module 200, and a rotating arm 300. A sector-shaped gear ring 110 is fixedly provided on the bracket 100; a rotating shaft 210 is fixedly provided on the barcode scanning module 200, and the barcode scanning module 200 is rotatably connected to the bracket 100 through the rotating shaft 210; a first end of the rotating arm 300 is fixed to the rotating shaft 210, and a single tooth 310 is provided at the second end, which meshes with the sector-shaped gear ring 110; wherein, when the barcode scanning module 200 is moved by an external force, the barcode scanning module 200 and the rotating arm 300 rotate coaxially relative to the bracket 100, and the single tooth 310 moves step by step along the teeth of the sector-shaped gear ring 110, and after the movement stops, the barcode scanning module 200 is held in the corresponding angular position by self-locking engagement.

[0042] Specifically, the bracket 100 is provided with a receiving groove 120 for accommodating the barcode scanning module 200, which is installed within the receiving groove 120. The bracket 100 is provided with a sector-shaped toothed ring 110, which can be integrally formed on a certain arc surface of the bracket 100 or fixed to the bracket 100 by bolts or the like. The sector-shaped toothed ring 110 has a plurality of teeth evenly distributed along the arc direction, with grooves formed between adjacent teeth.

[0043] The barcode scanning module 200 includes a housing 220 and a camera 230 mounted on the housing 220. The camera 230 on the housing 220 enables the barcode scanning function of the barcode scanning module 200. A rotating shaft 210 is fixedly mounted on the housing 220 of the barcode scanning module 200. The rotating shaft 210 can be fixedly connected to the housing 220 of the barcode scanning module 200 by screws, so that the rotating shaft 210 and the housing 220 of the barcode scanning module 200 are connected as one piece; or the rotating shaft 210 and the housing 220 of the barcode scanning module 200 are integrally formed. The bracket 100 has shaft holes 130 for mounting the rotating shaft 210. Both ends of the rotating shaft 210 are inserted into the shaft holes 130 and can rotate within the shaft holes 130, so that the barcode scanning module 200 can rotate relative to the bracket 100.

[0044] One end of the rotating arm 300 is fixed to the rotating shaft 210, and the other end is integrally formed or has a single tooth 310 installed, which meshes with the sector-shaped gear ring 110. When the barcode scanning module 200 is stationary without external force, the single tooth 310 of the rotating arm 300 meshes in a certain groove of the sector-shaped gear ring 110. Due to the interference between the single tooth 310 and the teeth, a self-locking torque is generated, which keeps the barcode scanning module 200 at the current angle.

[0045] When the operator moves the barcode scanning module 200, the barcode scanning module 200, the rotating shaft 210, and the rotating arm 300 rotate together around the axis of the rotating shaft 210 relative to the bracket 100. The single tooth 310 of the rotating arm 300 slides out of the current tooth groove on the sector-shaped gear ring 110 and then falls into the next tooth groove, producing a clear "click" mechanical feel. This process is repeated step by step until the external force that moves the barcode scanning module 200 stops. After the external force that moves the barcode scanning module 200 is removed, the single tooth 310 meshes with the corresponding tooth groove on the sector-shaped gear ring 110, and the self-locking torque prevents the barcode scanning module 200 from rotating freely, thereby fixing the rotation angle of the barcode scanning module 200.

[0046] In this embodiment, by setting a sector-shaped gear ring 110 on the bracket 100 and a rotating arm 300 with a single tooth 310 on the barcode scanning module 200, not only can the barcode scanning module 200 be adjusted at any angle, but the operator can also accurately perceive each angle change, providing a mechanical feel for rotation adjustment. In addition, by utilizing the self-locking meshing of the single tooth 310 and the sector-shaped gear ring 110, the rotation angle of the barcode scanning module 200 can be fixed without the need for additional screws or spring pins, resulting in a simple structure and a small number of parts.

[0047] In some embodiments, when the single tooth 310 meshes with the sector-shaped gear ring 110, the depth of the single tooth 310 extending into the tooth groove of the sector-shaped gear ring 110 is 0.2mm to 0.5mm. That is, the interference between the teeth of the single tooth 310 and the sector-shaped gear ring 110 is less than or equal to 0.5mm. This allows the rotating arm 300 to move smoothly along the sector-shaped gear ring 110 when the barcode scanning module 200 rotates relative to the bracket 100, ensuring smooth rotation of the barcode scanning module 200. The minimum meshing depth between the single tooth 310 and the sector-shaped gear ring 110 is greater than or equal to 0.2mm, ensuring that the single tooth 310 and the sector-shaped gear ring 110 remain meshed, preventing tooth slippage, and providing a self-locking torque for the barcode scanning module 200. This allows the barcode scanning module 200 to remain fixed without external force, eliminating the need for additional locking components.

[0048] In some embodiments, such as Figure 4 and Figure 5 As shown, the system also includes a first limiting member 400 and a second limiting member 500. The first limiting member 400 is fixedly disposed on the bracket 100, and the second limiting member 500 is fixedly disposed on the barcode scanning module 200. The first limiting member 400 and the second limiting member 500 cooperate with each other to limit the rotation angle of the barcode scanning module 200 relative to the bracket 100. In this embodiment, the rotation angle of the barcode scanning module 200 is limited by the cooperation of the first limiting member 400 and the second limiting member 500. At the same time, the maximum rotation angle of the barcode scanning module 200 is not greater than the central angle of the sector gear ring 110, so as to prevent the single tooth of the rotating arm 300 from disengaging from the sector gear ring 110, and to keep the single tooth 310 always engaged with the sector gear ring 110.

[0049] In one example, the first limiting member 400 is a pair of rigid blocks or an integrally formed boss, which is fixed on the bracket 100. The inner surfaces of the two blocks form a "mechanical stop", and the included angle is equal to the maximum rotation angle of the barcode scanning module. The second limiting member 500 is a limiting block integrally formed with the housing 220 of the barcode scanning module 200 or a limiting block locked onto the barcode scanning module 200 by screws. When the barcode scanning module 200 rotates relative to the bracket 100, the second limiting member 500 rotates synchronously with the barcode scanning module 200. When one end face of the second limiting member 500 abuts against a rigid stop (a first limiting member 400) on the bracket 100, the barcode scanning module 200 stops rotating. When the barcode scanning module 200 moves in the opposite direction until the other end face of the second limiting member 500 abuts against another rigid stop (another first limiting member 400) on the bracket 100, the barcode scanning module 200 also stops rotating. This achieves bidirectional mechanical limiting of the barcode scanning module 200.

[0050] In another example, the first limiting member 400 is a limiting groove disposed on the bracket 100; the second limiting member 500 is a limiting block disposed on the rotating shaft 210. The limiting block cooperates with the limiting groove to limit the rotation angle of the barcode scanning module 200. The limiting block is fixed on the rotating shaft 210 and extends into the limiting groove. When the barcode scanning module 200 rotates, the limiting block rotates with the barcode scanning module 200. When the limiting block rotates to abut against the side wall of the limiting groove, the barcode scanning module 200 stops rotating. The rotation angle of the barcode scanning module 200 is determined by the size of the limiting groove. In practical applications, the size of the limiting groove can be designed according to the required rotation angle of the barcode scanning module 200. In this embodiment, the size of the limiting groove is not limited.

[0051] In some embodiments, such as Figure 5 As shown, the rotating arm 300 can be located at one end of the rotating shaft 210, and the second limiting member 500 can be located at the other end of the rotating shaft 210. In this embodiment, the rotating arm 300 and the second limiting member 500 are located at opposite ends of the rotating shaft 210, forming a symmetrical load, which significantly reduces the eccentric bending moment of the rotating shaft 210 and makes the rotation of the rotating shaft 210 more stable. The rotating arm 300 and the limiting mechanism are offset axially, which not only avoids radial stacking but also avoids interference between the rotating arm 300 and the limiting mechanism.

[0052] In some embodiments, such as Figure 6 and Figure 7 As shown, the barcode scanning module 200 has an anti-rotation groove 240 around the rotating shaft 210; the first end of the rotating arm 300 has a connecting part 320, and the middle part of the connecting part 320 has a through hole 321. The rotating shaft 210 passes through the through hole 321, and the connecting part 320 is accommodated in the anti-rotation groove 240 and does not rotate relative to the anti-rotation groove 240 in the circumferential direction, so that the rotating arm 300 rotates with the rotating shaft 210 and the barcode scanning module 200.

[0053] The connecting portion 320 of the rotating arm 300 is sleeved on the rotating shaft 210 and fixed in the anti-rotation groove 240. The anti-rotation groove 240 completely constrains the connecting portion 320 in the circumferential direction, allowing the rotating arm 300 to rotate together with the rotating shaft 210 and the barcode scanning module 200. Furthermore, the bracket 100 is provided with a blocking portion 140, the middle of which has a shaft hole 130 for the rotating shaft 210 to be inserted. After the rotating shaft 210 is inserted into the shaft hole 130, the axial end face of the blocking portion 140 abuts against the connecting portion 320 of the rotating arm 300, thereby limiting the rotation arm 300 in the axial direction. In this embodiment, the rotating arm 300 is fixed by the anti-rotation groove 240 and the blocking portion 140, eliminating the need for additional screws, pins, or other fasteners. Torque transmission can be completed using only the groove structure, reducing the number of parts and saving assembly time.

[0054] The outer contour of the connecting part 320 and the inner contour of the anti-rotation groove 240 are non-circularly fitted. For example, a double-flat surface fit, D-shaped fit, rectangular fit, or hexagonal fit can be used to create a rigid constraint in the circumferential direction, preventing relative rotation between the connecting part 320 and the anti-rotation groove 240. This ensures instantaneous synchronous rotation of the rotating arm 300 and the barcode scanning module 200, eliminating hysteresis. Furthermore, the non-circular contact surface significantly increases the effective shear area, allowing for a torque transmission increase of over 30% compared to a circular hole-key structure of the same size, preventing slippage or wear of the connecting part 320 under high pulling forces. The non-circular contour has a unique circumferential phase, ensuring that the rotating arm 300 can only be inserted at the correct angle during assembly, preventing misalignment or angular deviation caused by incorrect installation.

[0055] In some embodiments, such as Figure 6 As shown, the barcode scanning module 200 has multiple first limiting ribs 150 surrounding the rotating shaft 210, which together form an anti-rotation groove 240. Multiple first limiting ribs 150 are integrally formed on the end face of the housing 220 of the barcode scanning module 200 around the rotating shaft 210. For example, 3-6 first limiting ribs 150 are provided, which together form a non-circular anti-rotation groove 240. The height of the first limiting ribs 150 can be set according to the thickness of the connecting part 320, and the width of the first limiting ribs 150 can be set according to the required strength. For example, the height of the first limiting ribs 150 can be set to 1.5-3mm, and the width of the first limiting ribs 150 can be set to 1-3mm.

[0056] During assembly, the connecting part 320 of the rotating arm 300 is inserted axially into the anti-rotation groove 240. The outer wall of the connecting part 320 and the side walls of the multiple first limiting ribs 150 form a surface-to-surface fit, achieving circumferential zero-backlash torque transmission. The contact between the connecting part 320 and the multiple first limiting ribs 150, along with the multi-rib structure, disperses the shear load over a larger contact area, thus improving torque transmission compared to a single-key structure.

[0057] In some embodiments, such as Figure 8As shown, the inner contour of the through hole 321 includes an arc segment 3211 and a right-angle segment 3212. The arc segment 3211 fits against part of the outer peripheral surface of the rotating shaft 210. The anti-rotation groove 240 is also provided with a second limiting rib 160, which extends into the through hole 321 and abuts against the right-angle segment 3212 for limiting.

[0058] In this embodiment, the inner contour of the through hole 321 is formed by an arc segment 3211 and a right-angle segment 3212. The radius of the arc segment 3211 is equal to the radius of the rotating shaft 210. After the arc segment 3211 and the rotating shaft 210 are in contact, radial concentricity and main torque transmission are achieved. The right-angle segment 3212 includes a horizontal segment and a vertical segment. The horizontal segment is connected to one end of the arc segment and is tangent to the arc segment 3211. The vertical segment is connected to the other end of the arc segment 3211 and is tangent to the arc segment 3211. The second limiting rib 160 is inserted into the through hole 321 and abuts against the horizontal and vertical segments of the right-angle segment 3212 to limit the connection part 320 radially, so that the arc segment 3211 of the connection part 320 always remains in contact with the rotating shaft 210. In this embodiment, the cooperation between the first limiting rib 150, the second limiting rib 160 and the connecting part 320 can achieve dual locking of circumferential anti-rotation and radial positioning.

[0059] In other embodiments, the outer contour of the rotating shaft 210 can be set to D-shape, and the shape of the through hole 321 of the connecting part 320 can also be set to D-shape. The shape of the through hole 321 is completely consistent with the outer contour of the rotating shaft 210. After the connecting part 320 is sleeved on the rotating shaft 210 through the through hole 321, the D-shaped plane fits together to achieve circumferential anti-rotation of the connecting part 320 and the rotating shaft 210, so that the rotating arm 300 rotates synchronously with the rotating shaft 210 and the barcode scanning module 200.

[0060] In some embodiments, such as Figure 1 As shown, the outer surface of the barcode scanning module 200 has a protruding actuating part 250 for being moved by external force. The actuating part 250 is disposed on the housing 220 of the barcode scanning module 200 and can be integrally formed with the housing 220 of the barcode scanning module 200. The actuating part 250 can be a strip-shaped rib extending axially along the rotating shaft 210, and the surface of the strip-shaped rib can be provided with serrated texture to increase friction. In this embodiment, the actuating part 250 is provided on the outer surface of the barcode scanning module 200, which allows the user to directly move the barcode scanning module 200 to adjust the angle, making operation convenient.

[0061] This disclosure also provides an electronic device component, including an electronic device and a barcode scanner as described in any of the above embodiments, wherein the barcode scanner has the following structure: Figures 1 to 8As shown, the barcode scanner is mounted on an electronic device via a bracket 100. The electronic device can be a tablet, display screen, smartphone, etc. After the barcode scanner is mounted on the electronic device via the bracket 100, the angle of the scanning module 200 can be adjusted by external force to meet the usage needs of different users and improve the practicality and applicability of the barcode scanner.

[0062] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0063] It should be noted that the above embodiments can be freely combined as needed. The above description is only a preferred embodiment of this application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A barcode scanner, characterized in that, include: A bracket, on which a fan-shaped toothed ring is fixed; A barcode scanning module is fixedly equipped with a rotating shaft, and the barcode scanning module is rotatably connected to the bracket through the rotating shaft. The rotating arm has a first end fixed to the rotating shaft and a second end provided with a single tooth, which meshes with the sector-shaped gear ring. When the external force moves the scanning module, the scanning module and the rotating arm rotate coaxially with respect to the bracket, and the single tooth moves step by step along the teeth of the fan-shaped tooth ring. After the movement stops, the scanning module is held in the corresponding angular position by meshing self-locking.

2. A barcode scanner according to claim 1, characterized in that, When the single tooth meshes with the sector-shaped gear ring, the depth of the single tooth extending into the groove of the sector-shaped gear ring is 0.2mm to 0.5mm.

3. A barcode scanner according to claim 1, characterized in that, It also includes a first limiting member and a second limiting member. The first limiting member is fixedly disposed on the bracket, and the second limiting member is fixedly disposed on the barcode scanning module. The first limiting member and the second limiting member cooperate with each other to limit the rotation angle of the barcode scanning module relative to the bracket.

4. A barcode scanner according to claim 3, characterized in that, The first limiting member is a limiting groove disposed on the bracket; The second limiting member is a limiting block disposed on the rotating shaft. The limiting block cooperates with the limiting groove to limit the rotation angle of the scanning module.

5. A barcode scanner according to any one of claims 1-4, characterized in that, The scanning module is provided with an anti-rotation groove around the rotating shaft; The first end of the rotating arm is provided with a connecting part, and the middle part of the connecting part is provided with a through hole. The rotating shaft passes through the through hole, and the connecting part is accommodated in the anti-rotation groove and does not rotate relative to the anti-rotation groove in the circumferential direction, so that the rotating arm rotates with the rotating shaft and the scanning module.

6. A barcode scanner according to claim 5, characterized in that, The outer contour of the connecting part and the inner contour of the anti-rotation groove are non-circular.

7. A barcode scanner according to claim 5, characterized in that, The scanning module has multiple first limiting ribs around the rotating shaft, and the multiple first limiting ribs surround the anti-rotation groove.

8. A barcode scanner according to claim 5, characterized in that, The inner contour of the through hole includes an arc segment and a right-angle segment, and the arc segment fits against part of the outer peripheral surface of the rotating shaft; The anti-rotation groove is also provided with a second limiting rib, which extends into the through hole and abuts against the right-angle segment for limiting.

9. A barcode scanner according to claim 1, characterized in that, The outer surface of the scanning module has a protruding actuating part for being moved by external force.

10. An electronic device component, characterized in that, It includes an electronic device and a barcode scanner as described in any one of claims 1-9, wherein the barcode scanner is mounted on the electronic device.

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