Card reader support

Abstract

The utility model discloses a card reader support which comprises a support body, the support body comprises a main board body, the main board body is provided with an installation clamping groove, one end of the installation clamping groove is provided with a breakable anti-skid rib protruding inwards, and a thickness reduction part is formed at the joint of the breakable anti-skid rib and the installation clamping groove. The thickness reduction part arranged at the root of the anti-skid rib forms a mechanical weak point through sudden change of the cross section, the anti-skid rib is preferentially broken under the action of abnormal external force, and the design not only ensures stable positioning under normal working conditions, but also avoids structural damage caused by overload impact. Compared with a traditional integral type anti-skid boss, the structure achieves fault isolation through a controllable fracture mechanism, the residual boss after fracture can still maintain the basic limiting function, and overall failure of the support is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tool changing device field especially a kind of card reader support. BACKGROUND

[0002] In automatic vending machine, intelligent storage cabinet and other hanging type equipment, card reader is usually fixed in the equipment shell by special support. The existing support adopts the design of one-way clamping structure cooperating with plane slide rail, which exposes significant defects in practical application. Due to the lack of self-centering guide mechanism, it is easy to be affected by manual operation deviation during installation, which leads to the deviation of card reader from the preset center position, and the actual measurement horizontal deviation generally reaches ±5mm or more, which directly affects the sensitivity of radio frequency signal transmission and reception. In addition, the plane friction fixing method between the support slide rail and the contact surface of the card reader is difficult to resist the continuous vibration in the equipment operation, which is easy to cause the cumulative displacement of the card reader, resulting in the coupling efficiency of the card reader and the matching antenna module decreasing by about 15%-20%, and even triggering the equipment misjudgment fault in serious cases.

[0003] The more prominent problem is the reliability of the support locking structure. The current mainstream scheme relies on a single elastic buckle to achieve fixation, which is easy to cause plastic deformation due to material fatigue after long-term high-frequency use. For example, a "robot card reader fixing support" disclosed in Chinese patent document with publication number "CN117249369A" includes a guide support, a support plate and a top plate support, the guide support is adjustably installed at the bottom of the support plate, the top end of the support plate is rotatably hinged to the top plate support through a hinge, the guide support is provided with a card reader fixing groove, and the top plate support is arranged around the robot running track.

[0004] The above scheme has simple structure and convenient card reader installation, but such structure will cause damage to parts when structural hard extrusion occurs, so it cannot meet the use requirements. UTILITY MODEL CONTENTS

[0005] In view of the problem that the common card reader support will cause damage to parts when hard extrusion occurs between components, the utility model provides a card reader support which provides a hard extrusion prevention structure while ensuring stable installation, can timely release the fixation of the card reader when hard extrusion occurs, and avoids damage to parts.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A card reader support includes a support body, the support body includes a main plate body, the main plate body is provided with a mounting clamping groove, one end of the mounting clamping groove is provided with an inwardly protruding breakable anti-slip rib, and a thickness reduction part is formed at the connection between the breakable anti-slip rib and the mounting clamping groove.

[0008] Further, the installation clamping groove comprises a groove body and an inwardly recessed groove mouth at the top of the groove body, and the breakable anti-skid ribs are connected to the inwardly recessed groove mouth through thickness reduction portions on both sides.

[0009] Further, at least one fixing hole is arranged at the middle part of the main plate body, and a recess is arranged at the top of the fixing hole.

[0010] Further, an elastic clamping opening is arranged at the bottom of the main plate body.

[0011] Further, an opening is arranged at the end of the installation clamping groove away from the breakable anti-skid ribs, and guide surfaces are arranged at both sides of the opening.

[0012] Further, the breaking strength of the thickness reduction portion is less than the yield strength of the bracket body.

[0013] Further, a plurality of hollow parts are arranged at both sides of the main plate body, and reinforcing ribs are formed between adjacent hollow parts.

[0014] Further, a positioning surface is arranged at the side of the breakable anti-skid rib close to the installation clamping groove, and the positioning surface can abut against the bottom base of the card reader to form centering positioning.

[0015] Therefore, the utility model has the following beneficial effects:

[0016] The positioning surface of the anti-skid rib clamps the edge of the card reader to center it, and the root thinning portion can be automatically disconnected when encountering excessive external force, thereby ensuring accurate position during normal use and preventing damage to the bracket or the card reader body during forced installation.

[0017] The elastic deformation of the bottom clamping buckle cooperates with the rigid fixation of the top screw to form a soft and hard combined fixation mode. The clamping buckle absorbs the shaking caused by equipment vibration, and the screw bears the main supporting force, and the cooperation of the two reduces the risk of bracket loosening.

[0018] The slope design of the clamping groove entrance allows the card reader to automatically slide to the middle position when inserted, and the narrowed groove mouth at the end limits the forward and backward movement. This double guiding structure allows the installer to align the center position without repeated adjustment.

[0019] The combination of the hollow hole and the reinforcing rib on the bracket plate reduces the overall weight while maintaining structural strength. It is convenient for carrying and installation, and avoids the loosening of the fixing point caused by excessive weight of the bracket itself. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the assembly schematic view of the utility model.

[0021] Figure 2 is the structure schematic view of the utility model.

[0022] Figure 3It is the axle side view of the utility model.

[0023] In the figure: 100, main rail guard, 101, card reader, 1, support body, 2, main plate body, 21, fixed hole, 22, sink, 23, hollow part, 24, reinforcing rib, 3, installation clamping groove, 31, groove body, 32, inner collection groove, 4, breakable antiskid rib, 41, positioning surface, 5, thickness reduction part, 6, elastic clamp, 7, opening, 71, guide surface. DETAILED DESCRIPTION

[0024] The utility model is further described below in combination with the drawings and specific embodiments.

[0025] Example 1

[0026] As Figure 1 , 2 shown, the utility model relates to a kind of card reader support, comprising: support body 1, the support body 1 includes main plate body 2, and installation clamping groove 3 is provided on main plate body 2, and the one end of installation clamping groove 3 is provided with the breakable antiskid rib 4 that is inwardly convex, and the connecting place of breakable antiskid rib 4 and installation clamping groove 3 is formed with thickness reduction part 5.The installation clamping groove 3 includes groove body 31 and inner collection groove 32, and the both sides of breakable antiskid rib 4 are connected to inner collection groove 32 by thickness reduction part 5.The middle part of main plate body 2 is provided with at least one fixed hole 21, and the top of fixed hole 21 is provided with sink 22.The bottom of main plate body 2 is provided with elastic clamp 6.The one end of installation clamping groove 3 away from breakable antiskid rib 4 is opening 7, and the both sides of opening 7 are provided with guide surface 71.The breaking strength of thickness reduction part 5 is less than the yield strength of support body 1.The both sides of main plate body 2 are provided with several hollow parts 23, and reinforcing rib 24 is formed between adjacent hollow parts 23.

[0027] The side of breakable antiskid rib 4 close to installation clamping groove 3 is provided with positioning surface 41, and positioning surface 41 can be in contact with card reader base to form center positioning.

[0028] Support body 1 takes main plate body 2 as core bearing structure, and installation clamping groove 3 is formed on its surface by stamping, and breakable antiskid rib 4 arranged at the end of clamping groove and thickness reduction part 5 form dynamic protection mechanism, and cooperate with multiple fixing structures to realize accurate positioning and long-term stability of card reader.

[0029] The bracket body 1 is integrally punched and formed by a plate material, the edge of the fixing hole 21 formed in the middle of the main plate body 2 is provided with an annular sink 22, the depth of the sink 22 is matched with the height of the standard screw head, so that the head of the screw is completely embedded in the groove after fastening, and the interference risk caused by the traditional protruding installation is eliminated. The array type hollow parts 23 distributed along the longitudinal sides of the main plate body 2 are alternately arranged with the reinforcing ribs 24, the cross-sectional moment of inertia is optimized to reduce the overall weight while improving the bending stiffness, and the actual measurement shows that the structure can reduce the mass of the bracket body 1 by about 40% while the stiffness loss is controlled within 15%. The installation clamping groove 3 is formed by punching a U-shaped guide channel on the surface of the main plate body 2, the opening 7 end of the clamping groove is expanded outward on both sides to form an inclined guide surface 71, the angle of the guide surface 71 is matched with the profile of the side edge of the card reader base, and when the card reader is inserted, the lateral position deviation is automatically corrected through the inclined surface contact.

[0030] The top of the clamping groove is inwardly retracted to form an inner retracted notch 32, and the top of the notch wall on both sides of the clamping groove end is formed into an anti-slip rib protruding into the groove. The root of the anti-slip rib is connected to the notch through milling to form a thickness reduction part 5, and the cross-sectional thickness of this area is about one third of the maximum thickness of the anti-slip rib. The inner side working surface of the anti-slip rib is processed into a vertical positioning surface 41, when the card reader is completely pushed into the clamping groove, the end thereof forms a surface contact with the positioning surface 41, forcing the center axis of the card reader to be accurately coincided with the symmetrical plane of the main plate body 2. The elastic clamping groove 6 extended downward from the bottom edge of the main plate body 2 adopts a cantilever beam structure, the end thereof is bent to form a hook-shaped part, which is elastically deformed to be buckled into the corresponding clamping groove of the equipment shell during installation, and forms a double anti-loose mechanism with the screw fixation.

[0031] As shown in Figure 1 , 3 , during the operation of the equipment, the card reader base is constrained by the guide surface 71 to slide along the axis direction of the clamping groove until the end surface is tightly attached to the anti-slip rib positioning surface 41. At this time, the screw rigidly fixes the main plate body 2 to the equipment shell through the sink 22 structure, and the elastic clamping groove 6 synchronously generates a continuous clamping force, both of which suppress the displacement of the bracket caused by vibration. When the card reader is subjected to abnormal lateral impact, the thickness reduction part 5 at the root of the anti-slip rib first breaks due to stress concentration, and this breaking process can absorb about 70% of the impact energy, avoiding the transmission of stress to the main plate body 2 to cause structural damage. The residual part of the broken anti-slip rib can still provide basic limiting function, and the combined design of the hollow part 23 and the reinforcing rib 24 effectively disperses the remaining stress, preventing the crack from expanding to the key area of the main plate body 2.

[0032] The embodiment realizes accurate centering of the card reader through a three-stage positioning system: the guide surface performs coarse positioning in the initial insertion stage, the card slot main body guides the axial movement track, and the anti-skid rib positioning surface 41 performs the final accurate positioning. Actual measurement shows that the scheme can control the installation position deviation of the card reader within ±0.5 mm, significantly improving the positioning accuracy. The preset breaking characteristics of the thickness reduction part 5 make the anti-skid rib a controllable failure point when overloaded, preventing damage to the card reader caused by hard extrusion, and avoiding equipment failure caused by the overall shedding of the bracket. The synergistic effect of the elastic clamp 6 and the screw fixation forms a dynamic damping system, significantly improving the operation reliability of the equipment under complex working conditions.

[0033] When installing the card reader bracket, the operator first pushes the bracket body 1 along the main rail guard strip 100 of the equipment shell, and the elastic clamp 6 at the bottom of the main plate body 2 initially contacts the clamping structure on the guard strip. With continuous pressure, the cantilever part of the elastic clamp 6 bends and deforms, and the hook-shaped part at the end gradually slides into the clamping groove of the guard strip. When the hook-shaped part is completely embedded, the cantilever returns to its original shape, generating a reverse force that causes the bracket body 1 to form a stable elastic connection with the guard strip. At this time, the bracket body 1 is in a pre-fixed state and can be fine-tuned in position but will not fall off by itself.

[0034] During the card reader insertion stage, the operator aligns the card reader base with the opening 7 end of the installation card slot 3, and the side edge of the base contacts the inclined surface of the guide surface. During the pushing process, the inclined surfaces between the guide surface and the base interact, forcing the card reader 101 to automatically correct its position in the horizontal direction until the base is completely inserted into the card slot main body. When the end of the base contacts the positioning surface 41 of the anti-skid rib, continuing to apply pressure will cause the base to form a close fit with the positioning surface 41, at which point the center axis of the card reader is accurately aligned with the symmetric plane of the bracket body 1. The vertical design of the positioning surface 41 ensures that the base cannot displace in the horizontal direction, and the width of the inwardly recessed slot 32 in the card slot is slightly larger than the slot thickness, allowing smooth insertion while limiting axial movement.

[0035] After the card reader is positioned, a screw is used to pass through the fixing hole 21 of the main plate body 2 and is screwed into the threaded hole of the equipment shell. The screw head is completely trapped inside the recess 22, and the bottom surface forms a surface contact with the bottom wall of the recess 22. This structure not only hides the protruding part of the screw, but also improves the anti-torsion capability by increasing the contact area. The pre-tightening force generated by the screw tightening is transmitted to the elastic clamp 6 through the main plate body 2, increasing the contact pressure of the hook-shaped part with the guard strip clamping groove, forming a double restraint mechanism of rigid fixation and elastic clamping. At this time, the bracket body 1 and the equipment shell form a stable three-point fixed system, with two symmetrically distributed screws bearing the main load and the elastic clamp 6 absorbing dynamic vibration energy.

[0036] During the operation of the device, the vibration energy transmitted by the main rail guard first acts on the cantilever structure of the elastic socket 6. The bending deformation of the cantilever consumes part of the vibration energy, and the natural frequency is designed to avoid the common vibration frequency band of the device to avoid resonance amplification effect. The thickness reduction part 5 of the anti-skid rib maintains the structural integrity under normal working conditions, and the stress concentration structure preset at the root controls the maximum stress value within a safe range. When the card reader is subjected to abnormal lateral impact, the impact force is transmitted to the anti-skid rib through the base, and the thickness reduction part 5 first breaks due to stress concentration, and the breaking process consumes impact energy and changes the force transmission path, avoiding plastic deformation of the bracket body 1 or the device shell. The remaining part of the broken anti-skid rib can still provide basic limiting function, and the combination design of the hollow part 23 and the reinforcing rib 24 disperses the remaining stress to prevent crack propagation from affecting the overall structure.

[0037] In actual assembly line applications, the bracket body 1 can be formed by continuous stamping process, focusing on ensuring the machining consistency of the thickness reduction part 5. Deburring treatment is added after the stamping process to ensure that the broken surface of the anti-skid rib is smooth and free of sharp corners, avoiding damage to the card reader shell. The assembly tool should set a limiting mechanism to control the deformation of the elastic socket 6 to prevent excessive bending from causing material fatigue. For different specifications of devices, various types of card readers can be adapted by adjusting the inclination angle of the guide surface, and the angle change maintains the slope guiding function while avoiding excessive insertion resistance. The cantilever length of the elastic socket 6 can be adjusted according to the guard structure, and longer cantilevers are suitable for installation scenarios that require greater elastic deformation, while shorter cantilevers provide higher clamping stiffness.

[0038] During maintenance and replacement, the operator presses the release part of the elastic socket 6 using a special tool to make the hook-shaped part disengage from the guard slot, and the bracket can be disassembled. This structure avoids the destructive disassembly method of traditional welded or riveted brackets, significantly shortening the maintenance time. If the anti-skid rib breaks, only the bracket body 1 needs to be replaced without changing the main structure of the device, reducing maintenance costs. For special application scenarios, magnetic adsorption structure can be considered instead of screw fixation, in which case a magnetic material layer is added to the main plate body 2, and a permanent magnet is provided at the corresponding position of the guard. This variant is suitable for situations that require frequent disassembly, but the reinforcing structure of the anti-skid rib compensates for the insufficient shear resistance of the magnetic fixation.

[0039] The core advantage of the embodiment lies in the synergistic effect of each functional unit: the guide surface and the positioning surface 41 form a progressive positioning system, the elastic socket 6 and the screw fixation construct a composite constraint mechanism, and the thickness reduction part 5 of the anti-skid rib realizes controllable failure protection.

[0040] Embodiment 2

[0041] In this embodiment, a through hole 21 is formed in the middle of the main plate body 2, and the hole edge extends upward to form an annular boss, a sunken groove 22 is formed on the top of the boss, the inner diameter of the sunken groove 22 is larger than the diameter of the through hole 21, and the groove depth matches the thickness of the standard screw head, so that the screw head can be completely embedded in the sunken groove 22 when the screw is tightened, avoiding the protrusion interfering with the assembly of the surrounding components. The arrayed hollow parts 23 are distributed along the length direction of the two side edges of the main plate body 2, and the solid part retained between adjacent hollow parts 23 constitutes a longitudinal reinforcing rib 24. This structure not only reduces the overall weight, but also forms a multi-section bending resistance section through the continuous distribution of the reinforcing rib 24, effectively inhibiting the low-frequency deformation of the main plate body 2 in the vibration environment.

[0042] The mounting slot 3 is used as the containing structure of the card reader main body, and is stamped and formed as a U-shaped cross-section groove body 31 on the surface of the main plate body 2. The opening 7 end of the groove body 31 expands outward to form a horn-shaped guide surface, the inclination angle of the guide surface is matched with the side edge of the card reader base, and the inclination angle ensures that the card reader can be automatically corrected in position when inserted through the inclined surface contact. The end of the groove body 31 is inwardly retracted to form an inwardly retracted groove 32, which has a width smaller than the main part of the groove body 31, forming axial limiting of the card reader base. The top of the two side walls of the inwardly retracted groove 32 is formed into a breakable anti-slip rib 4 protruding into the groove through the stamping process, and the connection between the root of the anti-slip rib and the groove wall is precisely milled to form a thickness reduction part 5, the cross-sectional thickness of the thickness reduction part is about one third of the maximum thickness of the anti-slip rib. In this embodiment, unlike embodiment 1, the surface of the thickness reduction area presents a V-shaped recess structure, forming a clear stress concentration path. The inner side working surface of the anti-slip rib is processed into a positioning surface 41 perpendicular to the plane of the main plate body 2, when the card reader base is completely pushed into the mounting slot 3, the end surface forms a surface contact with the positioning surface 41, forcing the center axis of the card reader to coincide with the symmetrical plane of the main plate body 2.

[0043] An elastic clamp 6 is provided on the bottom edge of the main plate body 2, which is composed of a cantilever beam extending downward from the edge of the main plate body 2, and a hook-shaped part is formed by bending inward at the end of the cantilever beam, and the inner side surface of the hook-shaped part forms an interference fit with the corresponding clamping boss on the equipment shell. The cantilever length of the elastic clamp 6 is matched with the elastic modulus of the material, which ensures that a proper elastic deformation can be generated during installation to realize clamping, while providing sufficient clamping force to resist displacement caused by vibration in normal state.

[0044] When the card reader base is inserted into the installation slot 3 along the guide surface, its side wall first contacts the inclined surface of the guide surface. During continuous advancement, the card reader base is gradually constrained by the guide surface to move closer to the center line of the slot body 31, until the base end surface completely matches the positioning surface 41 of the anti-skid rib. At this time, the positioning surface 41 of the anti-skid rib and the base end surface form a rigid abutment, forcing the card reader axis to be strictly aligned with the symmetry plane of the main plate body 2. After the main plate body 2 is fastened to the equipment shell by screws passing through the fixing holes 21, the sink 22 structure makes the screw head completely sink into the internal plane of the main plate body 2, eliminating the interference risk caused by traditional protruding installation. The elastic clamp 6 is elastically deformed when the main plate body 2 is installed, and its hook-shaped part is buckled into the clamping boss of the equipment shell after restoring to its original shape, forming a second mechanical fixation, and forming a double anti-loose mechanism with the screw fixation.

[0045] The thickness reduction 5 of the breakable anti-skid rib 4 is a pre-set weak point. When the card reader is subjected to abnormal external force impact, the stress value at this point first reaches the material yield limit, prompting the anti-skid rib to break at the reduced portion. The remaining part of the broken anti-skid rib can still provide basic limiting function, while the impact energy is consumed during the breaking process to avoid stress transmission to the main plate body 2 causing structural damage. The combination structure of the hollow part 23 and the reinforcing rib 24 reduces the mass of the bracket body 1 by about 40% under the premise of ensuring overall rigidity, significantly reducing the load of inertial force on the fixed structure. The cooperation of the inwardly-recessed slot 32 and the anti-skid rib forms a three-level positioning system: the guide surface completes rough positioning, the slot body 31 main body realizes axial guidance, and the anti-skid rib positioning surface 41 performs precise positioning. The three work together to control the position deviation of the card reader within ±0.5mm.

Claims

1. A card reader holder, characterized in that, The application relates to a support body, which comprises a main plate body provided with a mounting clamping groove, wherein one end of the mounting clamping groove is provided with an inwardly protruding breakable anti-skid rib, and a thickness reduction part is formed at the joint of the breakable anti-skid rib and the mounting clamping groove. The mounting clamping groove comprises a groove body and an inwardly recessed groove mouth at the top of the groove body, and the breakable anti-skid rib is connected to the inwardly recessed groove mouth through the thickness reduction part at both sides.

2. The card reader holder of claim 1, wherein: At least one fixing hole is arranged in the middle of the main plate body, and a sunken groove is arranged at the top of the fixing hole.

3. The card reader holder of claim 2, wherein: An elastic clamping opening is arranged at the bottom of the main plate body.

4. The card reader holder of claim 1, wherein: An opening is arranged at the end of the mounting clamping groove away from the breakable anti-skid rib, and guide surfaces are arranged at both sides of the opening.

5. The card reader holder of claim 2, wherein: The breaking strength of the thickness reduction part is smaller than the yield strength of the support body.

6. The card reader holder of claim 1, wherein: A plurality of hollow parts are arranged at both sides of the main plate body, and reinforcing ribs are formed between adjacent hollow parts.

7. The card reader holder of claim 2, wherein: A positioning surface is arranged at the side of the breakable anti-skid rib close to the mounting clamping groove, and the positioning surface can abut against the bottom of a card reader base to form central positioning.

8. The card reader holder of any of claims 1-7, wherein: ​

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