An auxiliary device for assembling a smart alarm clock

Abstract

This invention relates to the technical field of industrial automated mechanical assembly, and more particularly to an auxiliary device for assembling a smart alarm clock. The device includes a frame with a worktable having an alarm clock placement slot for positioning the smart alarm clock housing; a translation component mounted on the frame for driving a locking unit to switch between a locking position and a pick-and-place position; a lifting component mounted on the translation component for driving the locking unit to approach or move away from the alarm clock housing; and a rotation drive component mounted on the lifting component for outputting rotational power. This invention uses a stepped arc-shaped adjustment plate to progressively change the spring preload, adjusting the locking force in stages to achieve multi-level adjustable torque. Operators can manually rotate the adjustment ring to quickly adapt to the locking requirements of different alarm clock models, solving the problem of inflexible adjustment of existing single-level fixed torque and significantly improving the versatility and adaptability of the equipment.

Description

Technical Field

[0001] This invention relates to the technical field of industrial automated mechanical assembly, and more particularly to an auxiliary device for assembling an intelligent alarm clock. Background Technology

[0002] With the miniaturization and precision of consumer electronics, the assembly of casings for small electronic devices such as smart alarm clocks places higher demands on screw fastening processes. These casings are typically made of engineering plastics such as ABS and PC, and internally integrate circuit boards, sensors, and precision mechanisms. The screw studs are small (commonly M1.0–M1.6 sizes) and have low torsional strength. Excessive fastening torque can easily lead to stripped plastic threads, casing cracking, or displacement of internal components under pressure, affecting product sealing and functional reliability; insufficient torque will cause loose connections, abnormal noises, or even detachment.

[0003] Currently, the industry commonly uses ordinary manual screwdrivers or simple electric screwdrivers for assembly. Operators rely on personal experience to judge the tightness, resulting in significant subjective differences: skilled workers can control the force by "feel," but new employees are prone to using excessive force and causing damage. Even when using torque-controlled electric screwdrivers, their fixed torque value is difficult to adapt to the different tightening force requirements of different alarm clock models. In addition, some low-cost production lines still use power tools without torque control, relying solely on time or speed limits to indirectly control the force, which cannot accurately reflect the actual tightening torque. Over-tightening and under-tightening risks coexist, leading to a high rework rate. To improve assembly consistency, some production lines use industrial robots equipped with electric screwdrivers for automatic tightening. However, existing solutions often treat robots only as high-precision positioning devices, with the end effector still relying on traditional torque-controlled electric screwdrivers or mechanical torque-limiting tools, unable to sense the actual torque. Once the electric screwdriver slips or the clutch is triggered, the robot's continued pressure can easily crush the casing; moreover, the fixed torque is difficult to adapt to the needs of mixed production of multiple models, requiring frequent tool changes or reprogramming, resulting in insufficient flexibility. To address these issues, existing technologies have attempted to introduce mechanical torque-limiting screwdrivers with clutch mechanisms. These tools achieve "free-running" by slipping through steel balls, springs, or friction plates when a preset torque is reached, preventing further force application. However, most existing products are designed with a single, fixed torque setting, unable to be flexibly adjusted to specific product requirements; furthermore, the mechanical clutch structure is prone to wear after prolonged use, leading to torque drift and decreased accuracy. More importantly, the slippage process lacks status feedback; neither manual operation nor existing industrial robot systems can confirm in real time whether the tightening is satisfactory, requiring additional visual inspection or manual re-inspection, impacting efficiency and creating potential quality issues.

[0004] Therefore, achieving precise, controllable, and consistent low-torque locking remains a critical technical challenge to be solved in the automated assembly of smart alarm clocks. Summary of the Invention

[0005] In order to overcome the shortcomings of existing screw fastening tools, such as inaccurate torque control, inflexible adjustment, torque drift after long-term use, and lack of fastening status feedback, this invention provides an auxiliary device for assembling a smart alarm clock.

[0006] An auxiliary device for assembling a smart alarm clock includes a frame with an alarm clock placement slot on its worktable for positioning the smart alarm clock housing; a translation component mounted on the frame for driving a locking unit to switch between a locking station and a pick-and-place station; a lifting component mounted on the translation component for driving the locking unit to approach or move away from the alarm clock housing; a rotation drive component mounted on the lifting component for outputting rotational power; a torque adjustment component mounted on the rotation drive component for multi-level adjustable locking torque; a locking component mounted on the rotation drive component for locking the position of the moving parts in the torque adjustment component; and a quick-change screwdriver assembly mounted at the end of the rotation drive component for accommodating screws of different sizes.

[0007] As an improvement to the above solution, the translation component includes linear motors installed on the left and right sides of the frame. Each linear motor includes a stator and a mover. Each stator is fixedly connected to the frame. A support frame is fixedly connected between the movers of two linear motors. The linear motors are configured to drive the support frame to slide back and forth relative to the frame.

[0008] As an improvement to the above solution, the lifting assembly includes fixed frames symmetrically arranged on the left and right sides and fixed to the support frame. Each fixed frame has a cylinder installed on its left and right sides. A fixed block is fixed between the piston rods of two adjacent cylinders corresponding to each fixed frame. Each cylinder is used to drive the corresponding fixed block to move up and down.

[0009] As an improvement to the above solution, the rotary drive assembly includes a drive motor installed in each fixed block, the output shaft of which is fixed to a rotating shaft via a coupling, and the two rotating shafts slide up and down in corresponding two fixed frames respectively; a connecting shaft is keyed to the lower end of each rotating shaft, so that each connecting shaft has only the degree of freedom to slide up and down in the corresponding rotating shaft and no degree of freedom to rotate relative to it; a mounting rod is rotatably connected to each connecting shaft, and the lower end of the rod has a cross head for engaging with a cross screw.

[0010] As an improvement to the above solution, the torque adjustment assembly includes: a limit buckle, symmetrically and rotatably connected between the top and bottom walls of each connecting shaft; a slot, formed on the side of each mounting rod near the limit buckle, with each limit buckle inserted into the corresponding slot; a spring, rotatably connected to the side of each limit buckle away from the mounting rod; an adjustment ring, rotatably connected to the outside of each connecting shaft, with the lower end of each mounting rod passing through the corresponding adjustment ring, and the movable end of each spring passing through the side wall of the connecting shaft and abutting against the inner wall of the adjustment ring; and an arc-shaped adjustment plate, symmetrically arranged on the inner wall of each adjustment ring, with two arc-shaped adjustment plates in the same adjustment ring arranged at an end-to-end interval.

[0011] As an improvement to the above scheme, each arc-shaped adjusting plate is arranged in a stepped manner along the circumference of the adjusting ring, and is divided into a first pressing section, a second pressing section, and a third pressing section with progressively increasing radial thickness. Adjacent pressing sections are smoothly connected by a transition slope. Each arc-shaped adjusting plate is used to press the spring piece with different radial thicknesses when the adjusting ring rotates, thereby providing the spring piece with progressively varying preload, so that the locking force between the limit buckle and the mounting rod slot can be adjusted in stages.

[0012] As an improvement to the above solution, the locking assembly includes: a fixing plate, fixed to the bottom of each rotating shaft, with symmetrically distributed locking holes on each fixing plate; a linear spring, connected between the top surface of each connecting shaft and the corresponding rotating shaft; and a telescopic rod, fixed to the top of each limit buckle, with its telescopic part connected to the fixing part by a return spring. In the initial state, the top surface of the telescopic part of each telescopic rod is higher than the top surface of the connecting shaft, and the locking holes on the fixing plate and the telescopic rod are misaligned.

[0013] As an improvement to the above solution, the quick-change cutter head assembly includes: an external thread located at the lower end of each mounting rod; a connecting ring that is threaded to the mounting rod via the external thread, and its outer wall has evenly distributed grooves along the circumference; and a detachable Phillips head that is rotatably connected to each connecting ring, and its interior has a cross-shaped groove that matches the crosshead of the mounting rod.

[0014] The present invention has the following advantages: By setting a torque adjustment component, the present invention provides an arc-shaped adjustment plate arranged in a stepped manner on the inner wall of the adjustment ring, so that the spring piece can obtain a gradually changing preload, thereby adjusting the locking force between the limit buckle and the mounting rod slot in stages, realizing multi-level adjustable locking torque; the operator can manually rotate the adjustment ring to quickly switch to the required torque level according to the different locking force requirements of different models of smart alarm clocks (such as children's alarm clocks and high-end smart alarm clocks), solving the problem that the single-level fixed torque design in the prior art cannot be flexibly adjusted, and significantly improving the versatility and adaptability of the equipment.

[0015] This invention utilizes a locking mechanism between a limiting buckle and a slot. When the screw is tightened to a preset torque, the limiting buckle automatically disengages from the slot, allowing the connecting shaft to spin freely and the mounting rod to stop rotating. This provides precise overload protection, preventing stripping of plastic threads, cracking of the housing, or displacement of internal components due to excessive torque. Simultaneously, the telescopic rod in the locking assembly automatically extends into the locking hole after the limiting buckle disengages, locking the limiting buckle in the disengaged position. This provides clear status feedback to the operator, solving the technical problem of existing mechanical torque-limiting screwdrivers lacking feedback during slippage and requiring secondary visual inspection.

[0016] This invention, by setting up a quick-change cutter head assembly and utilizing the threaded locking structure of the external thread and connecting ring, allows for the rapid replacement of detachable Torx screws. This enables the equipment to be compatible with the fastening of various screw specifications, including Phillips head and Torx head screws, meeting the assembly needs of different screw types. Simultaneously, a linear motor drives the support frame to achieve automatic switching between the fastening station and the pick-and-place station. Combined with cylinder-driven lifting and feeding, this achieves alternating operation between the two stations, significantly improving the automation level and production efficiency of smart alarm clock casing assembly, and reducing subjective differences and rework rates caused by manual operation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the linear motor, support frame, and drive motor components of the present invention.

[0019] Figure 3 This is a three-dimensional structural cross-sectional view of the components of the present invention, such as the rotating shaft, connecting shaft, and adjusting ring.

[0020] Figure 4 This is a three-dimensional structural diagram of the mounting rod, limit buckle, and spring piece of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the adjusting ring of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the cylinder, fixing block, and drive motor components of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the components of the present invention, including the fixing plate, telescopic rod, and linear spring.

[0024] Figure 8 This is a three-dimensional structural diagram of the detachable plum blossom rod, connecting ring, and mounting rod of the present invention.

[0025] In the attached diagram, the following labels are used: 101-frame, 102-alarm clock slot, 103-linear motor, 104-support frame, 105-fixed frame, 106-drive motor, 107-rotating shaft, 108-connecting shaft, 109-adjusting ring, 1091-arc-shaped adjusting plate, 110-mounting rod, 111-limit buckle, 112-spring, 201-linear spring, 202-fixed plate, 203-locking hole, 204-telescopic rod, 301-cylinder, 302-fixing block, 401-detachable perforated rod, 402-connecting ring, 403-external thread. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1: An auxiliary device for assembling a smart alarm clock, such as... Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the system includes a frame 101 with a clock placement slot 102 on its worktable for positioning the smart alarm clock housing. Linear motors 103 are mounted on both the left and right sides of the frame 101. Each linear motor 103 includes a stator and a mover, and each stator is fixedly connected to the frame 101. A support frame 104 is fixedly connected between the movers of two linear motors 103. The linear motors 103 are configured to drive the support frame 104 to slide back and forth relative to the frame 101, thereby switching between the locking / unlocking station and the pick-and-place station.

[0028] A symmetrically arranged fixing frame 105 is fixedly connected to the support frame 104. Each fixing frame 105 has a cylinder 301 installed on each of its left and right sides, meaning each fixing frame 105 works with two cylinders 301, for a total of four cylinders 301. A fixing block 302 is fixedly connected between the piston rods of two adjacent cylinders 301 corresponding to each fixing frame 105, for a total of two fixing blocks 302. Each cylinder 301 drives the corresponding fixing block 302 to move up and down, thereby moving the locking unit closer to or away from the alarm clock housing.

[0029] Each fixed block 302 houses a drive motor 106, whose output shaft is fixedly connected to a rotating shaft 107 via a coupling. The two rotating shafts 107 slide up and down within their respective fixed brackets 105. Each rotating shaft 107 has a connecting shaft 108 keyed to its lower end, allowing the two connecting shafts 108 only the freedom to slide up and down within their respective rotating shafts 107, without any relative rotational freedom. Each connecting shaft 108 is rotatably connected to a mounting rod 110, the lower end of which has a crosshead for engaging with a Phillips head screw.

[0030] To achieve multi-level adjustable locking torque, each connecting shaft 108 is equipped with a torque adjustment component.

[0031] like Figures 3-5 As shown, specifically, the torque adjustment assembly includes symmetrically rotatably connected limit buckles 111 between the top and bottom walls of each connecting shaft 108. Each mounting rod 110 has a slot on the side near the limit buckle 111, and each limit buckle 111 is rotatably connected to a spring piece 112 on the side away from the mounting rod 110. Each limit buckle 111 is inserted into the slot of the adjacent mounting rod 110. Each connecting shaft 108 is rotatably connected to an adjusting ring 109 on its outer side. The lower end of each mounting rod 110 protrudes from the corresponding adjusting ring 109, and the movable end of each spring piece 112 protrudes from the side wall of the connecting shaft 108 and abuts against the inner wall of the adjusting ring 109.

[0032] Each adjusting ring 109 has symmetrically distributed arc-shaped adjusting plates 1091 on its inner wall, with two arc-shaped adjusting plates 1091 within the same adjusting ring 109 arranged end-to-end. Each arc-shaped adjusting plate 1091 is arranged in a stepped pattern along the circumference of the adjusting ring 109, sequentially divided into a first pressing section, a second pressing section, and a third pressing section. The radial thickness of each section increases progressively, and adjacent pressing sections are smoothly connected by a transition slope. The arc-shaped adjusting plates 1091 are used to press against the spring piece 112 with different radial thicknesses when the adjusting ring 109 rotates, thereby providing the spring piece 112 with progressively varying preload. This allows for graded adjustment of the locking force between the limit buckle 111 and the mounting rod 110 slot, achieving multi-level setting of the locking torque.

[0033] Specifically, in the initial state, the outer end of the spring piece 112 is in contact with the inner wall of the adjusting ring 109. When torque adjustment is required, the adjusting ring 109 is manually rotated, causing the arc-shaped adjusting plate 1091 to rotate synchronously. Different thickness sections of the arc-shaped adjusting plate 1091 press against the spring piece 112 in sequence, causing the spring piece 112 to produce different radial deformations, thereby providing different pre-push forces for the limit buckle 111. During the locking process, the drive motor 106 drives the rotating shaft 107 and the connecting shaft 108 to rotate. The connecting shaft 108 drives the mounting rod 110 to rotate through the limit buckle 111 to tighten the screw. When the screw is tightened to the preset torque, the resistance on the mounting rod 110 exceeds the locking force between the limit buckle 111 and the slot. The limit buckle 111 rotates relative to the mounting rod 110 and disengages from the slot. The connecting shaft 108 spins freely, and the mounting rod 110 stops rotating, thereby achieving overload protection and preventing the screw from stripping due to over-tightening.

[0034] Each rotating shaft 107 has a locking component at its lower end for locking the position of the limit buckle 111.

[0035] like Figure 7 As shown, specifically, the locking assembly includes fixing plates 202 fixed to the bottom of the rotating shaft 107, each fixing plate 202 having symmetrically distributed locking holes 203. The top surface of each connecting shaft 108 is connected to the corresponding rotating shaft 107 via a linear spring 201. Each limiting buckle 111 has a telescopic rod 204 fixed to its top, with its telescopic part connected to its fixing part via a return spring (built-in, not shown). In the initial state, the top surface of the telescopic part of each telescopic rod 204 is higher than the top surface of the connecting shaft 108, meaning the telescopic part of the telescopic rod 204 extends out of the connecting shaft 108, and the locking holes 203 on the fixing plate 202 are misaligned with the telescopic rod 204.

[0036] To accommodate the fastening requirements of screws of different specifications, each mounting rod 110 is equipped with a quick-change cutter head assembly at its lower end.

[0037] like Figure 7 and Figure 8As shown, specifically, the quick-change cutter head assembly includes: each mounting rod 110 has an external thread 403 at its lower end, and each mounting rod 110 is threadedly connected to a connecting ring 402 via the external thread 403. The outer wall of each connecting ring 402 has evenly distributed grooves along its circumference for easy manual tightening. Each connecting ring 402 is rotatably connected to a detachable perforated rod 401, and each detachable perforated rod 401 has a cross-shaped slot that matches the crosshead of the mounting rod 110. Through the engagement of the cross-shaped slot with the crosshead of the mounting rod 110, and the locking of the connecting ring 402 with the external thread 403, the quick installation and replacement of the detachable perforated rod 401 is achieved.

[0038] Working principle: Before assembly, the smart alarm clock housing to be assembled is positioned in the alarm clock placement slot 102, with the screw holes facing upwards, and the screws are pre-placed in the screw holes with the cross grooves on the top of the screws facing upwards.

[0039] The adjusting ring 109 rotates according to the required locking torque, causing the arc-shaped adjusting plate 1091 to rotate synchronously. Different thickness sections of the arc-shaped adjusting plate 1091 abut against the spring piece 112, causing the spring piece 112 to generate corresponding radial deformation, thereby providing a preset pre-push force for the limit buckle 111, realizing graded setting of the locking force between the limit buckle 111 and the mounting rod 110 slot. When a smaller torque is required, it is adjusted to the first pressing section (thinner section); when a larger torque is required, it is adjusted to the third pressing section (thickest section).

[0040] The linear motor 103 is started, driving the support frame 104 to move the locking unit directly above the rear screws. The piston rod of the control cylinder 301 extends, moving the locking unit downwards until the crosshead at the lower end of the mounting rod 110 inserts into the cross groove of the screw. At this point, the top surface of the screw abuts against the mounting rod 110, and the connecting shaft 108 remains stationary; the rotating shaft 107 continues to move downwards, causing the fixing plate 202 to slide downwards relative to the connecting shaft 108, compressing the linear spring 201. When the lower surface of the fixing plate 202 abuts against the top surface of the connecting shaft 108, the fixing plate 202 presses the telescopic part of the telescopic rod 204 downwards into the fixing part, compressing its return spring.

[0041] Start the drive motor 106, which drives the connecting shaft 108 to rotate via the rotating shaft 107. The connecting shaft 108 drives the mounting rod 110 to rotate synchronously through the engagement of the limit buckle 111 and the mounting rod 110 slot, and the drive screw is screwed into the screw hole of the housing.

[0042] When the screw is tightened to the preset torque, the rotational resistance of the mounting rod 110 exceeds the locking force between the limit buckle 111 and the slot. Under the squeezing action of the inclined surface of the slot, the limit buckle 111 overcomes the pre-push force of the spring piece 112, deflects away from the mounting rod 110, and disengages from the slot. The connecting shaft 108 continues to rotate freely, and the mounting rod 110 stops rotating, thus achieving overload protection.

[0043] During the deflection of the limit buckle 111, it drives the telescopic rod 204 to rotate synchronously. When the telescopic rod 204 rotates to align with the locking hole 203 on the fixed plate 202, under the action of the return spring, the telescopic part of the telescopic rod 204 extends upward and enters the locking hole 203, locking the limit buckle 111 in the disengaged position.

[0044] After the rear screws are tightened, the piston rod of the control cylinder 301 retracts, causing the mounting rod 110 to move upward and exit the screw hole. After the mounting rod 110 separates from the screw, the linear spring 201 returns to its original position, pushing the fixing plate 202 to slide upward relative to the connecting shaft 108, and the locking hole 203 separates from the telescopic rod 204. Under the elastic restoring force of the spring piece 112, the limit buckle 111 deflects in the opposite direction and re-engages into the slot of the mounting rod 110, restoring the transmission connection.

[0045] The linear motor 103 drives the support frame 104 to move forward to directly above the front screws. The above steps are repeated to complete the automatic tightening of the front screws.

[0046] When it is necessary to screw in the Torx screw, attach the detachable Torx rod 401 to the lower end of the mounting rod 110, so that the cross head of the mounting rod 110 is inserted into the cross-shaped slot of the detachable Torx rod 401. Tighten the connecting ring 402 and the external thread 403 to lock it in place. Then, replace the screwdriver head and complete the screw fastening operation by following the above steps.

[0047] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of the invention. Therefore, the scope of the invention should be limited only by the appended claims.

Claims

1. An auxiliary device for assembling a smart alarm clock, characterized in that, It includes a frame (101) with an alarm clock placement slot (102) on its work surface for positioning the smart alarm clock housing. The translation component is mounted on the frame (101) and is used to drive the locking unit to switch between the locking station and the pick-and-place station; The lifting assembly, mounted on the translation assembly, is used to drive the locking unit to approach or move away from the alarm clock housing; A rotary drive assembly, mounted on the lifting assembly, is used to output rotary power; A torque adjustment assembly, mounted on the rotary drive assembly, is used to achieve multi-level adjustable locking torque; a locking assembly, mounted on the rotary drive assembly, is used to lock the position of the moving parts in the torque adjustment assembly. The quick-change tool tip assembly is installed at the end of the rotary drive assembly to accommodate screws of different sizes.

2. An auxiliary device for assembling an intelligent alarm clock as claimed in claim 1, characterized in that, The translation component includes linear motors (103) installed on the left and right sides of the frame (101). Each linear motor (103) includes a stator and a mover. Each stator is fixedly connected to the frame (101). A support frame (104) is fixedly connected between the movers of two linear motors (103). The linear motors (103) are configured to drive the support frame (104) to slide back and forth relative to the frame (101).

3. An auxiliary device for assembling an intelligent alarm clock as claimed in claim 2, characterized in that, The lifting assembly includes fixed frames (105) symmetrically arranged on the left and right sides of the support frame (104). Each fixed frame (105) has a cylinder (301) installed on its left and right sides. A fixed block (302) is fixed between the piston rods of two adjacent cylinders (301) of each fixed frame (105). Each cylinder (301) is used to drive the corresponding fixed block (302) to move up and down.

4. An auxiliary device for assembling a smart alarm clock according to claim 3, characterized in that, The rotary drive assembly includes a drive motor (106) installed in each fixed block (302), the output shaft of which is fixed to a rotating shaft (107) by a coupling. The two rotating shafts (107) slide up and down in the corresponding two fixed frames (105). Each rotating shaft (107) is keyed to a connecting shaft (108) at its lower end, so that each connecting shaft (108) has only the freedom to slide up and down in the corresponding rotating shaft (107) and no relative rotational freedom. Each connecting shaft (108) is rotatably connected to a mounting rod (110), the lower end of which is formed with a cross head for cooperating with a cross screw.

5. An auxiliary device for assembling a smart alarm clock according to claim 4, characterized in that, The torque regulation component includes: The limit buckle (111) is symmetrically and rotatably connected between the top and bottom walls of each connecting shaft (108); The slots are provided on the side of each mounting rod (110) near the limit buckle (111), and each limit buckle (111) is inserted into the corresponding slot; The spring clip (112) is rotatably connected to the side of each limit buckle (111) away from the mounting rod (110); Adjusting ring (109) is rotatably connected to the outside of each connecting shaft (108). The lower end of each mounting rod (110) passes through the corresponding adjusting ring (109). The movable end of each spring (112) passes through the side wall of the connecting shaft (108) and abuts against the inner wall of the adjusting ring (109). Arc-shaped adjustment plates (1091) are symmetrically arranged on the inner wall of each adjustment ring (109), and the two arc-shaped adjustment plates (1091) in the same adjustment ring (109) are arranged at an interval.

6. An auxiliary device for assembling a smart alarm clock according to claim 5, characterized in that, Each arc-shaped adjusting plate (1091) is arranged in a stepped manner along the circumference of the adjusting ring (109), and is divided into a first pressing section, a second pressing section and a third pressing section with progressively increasing radial thickness. Adjacent pressing sections are smoothly connected by a transition slope. Each arc-shaped adjusting plate (1091) is used to press the spring piece (112) with different radial thicknesses when the adjusting ring (109) rotates, thereby providing the spring piece (112) with progressively varying preload, so that the locking force between the limit buckle (111) and the mounting rod (110) slot can be adjusted in stages.

7. An auxiliary device for assembling a smart alarm clock according to claim 6, characterized in that, The card slot components include: A fixing plate (202) is fixed to the bottom of each rotating shaft (107), and each fixing plate (202) has symmetrically distributed locking holes (203). A linear spring (201) is connected between the top surface of each connecting shaft (108) and the corresponding rotating shaft (107); The telescopic rod (204) is fixed to the top of each limit buckle (111), and its telescopic part and fixed part are connected by a return spring; In the initial state, the top surface of the telescopic part of each telescopic rod (204) is higher than the top surface of the connecting shaft (108), and the locking hole (203) on the fixing plate (202) is misaligned with the telescopic rod (204).

8. An auxiliary device for assembling a smart alarm clock according to claim 7, characterized in that, The quick-change cutter head assembly includes: External thread (403) is provided on the lower end connecting ring (402) of each mounting rod (110), and is threaded to the mounting rod (110) through external thread (403). Its outer wall has uniformly distributed grooves along the circumference. The detachable plum blossom rod (401) is rotatably connected to each connecting ring (402), and its interior has a cross-shaped slot that matches the cross head of the mounting rod (110).

Images