A cable fixing device and a dimming power supply box for preventing cable detachment

Abstract

This invention discloses a cable fixing device for preventing cable detachment. The housing has at least one cable fixing cavity, which contains a guide groove and a lower cable clamp for cable fixing. A locking member is also included; this locking member can rotate and press down to be installed within the cable fixing cavity of the housing. The lower part of the locking member cooperates with the guide groove and the lower cable clamp to lock and fix the cable. This application utilizes the cooperation of a guide post and a guide groove, allowing the rear teeth of the locking member to engage with the rear teeth of the cable fixing cavity. The front teeth of the locking member then gradually and tightly engage with the front teeth of the cable fixing cavity as the guide post moves downwards. Using the guide post as a fulcrum, the front end engages more tightly under the lever principle, resulting in stronger engagement force and better stability compared to traditional structures. Furthermore, a disassembly notch is provided on the housing, requiring only a pry bar to separate the rear teeth of the locking member from the rear teeth of the cable fixing cavity, making disassembly simple and effortless.

Description

Technical Field

[0001] This invention relates to the field of wiring technology, specifically to a fixing device for preventing cable detachment and a dimming power supply box. Background Technology

[0002] With the development of the electrical appliance industry, more and more products such as power boxes are using push-button quick-connect terminals. Compared with traditional screw-tightening cables, quick-connect terminals are easier to operate and offer better protection against short circuits, but they are less stable and the wires can easily be pulled out. Therefore, targeted anti-detachment structures have emerged. Currently, the most common anti-detachment structure is a one-way snap-fit ​​design. A row of snaps is placed vertically in the middle, and a cover is used to press down on each snap from top to bottom until the cable is secured.

[0003] Some designs use two-way snap-fit ​​mechanisms, such as the one described in 202022245965.0 "Wire Fixing Device and LED Power Supply". This design uses a rotating mechanism with limiting strips on both side plates providing a snap-fit ​​function. When pressing begins, the connecting post 13 provides a fulcrum. However, once the limiting strips on both sides are engaged in one position, it takes considerable force to press down to the next position. The connecting post can no longer save effort, and sometimes tools are needed to tap it to tighten the cable. When it is necessary to confirm whether the snap-fit ​​mechanism is engaged, if the cable is pulled out, it takes considerable force to pry it open because the limiting strips are already engaged in many positions, which can easily damage the structure. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a labor-saving and structurally stable fixing device for preventing cable detachment and a dimming power supply box.

[0005] To achieve this technical objective, the present invention provides a fixing device for preventing cable detachment, comprising:

[0006] The housing has at least one wire clamping cavity, and the wire clamping cavity is provided with a guide groove and a lower wire clamp for fixing the cable.

[0007] The engaging component is rotatable and can be pressed down to install in the wire clamping cavity of the housing. The lower part of the engaging component can cooperate with the guide groove and the lower clamping gate to engage and fix the cable.

[0008] Preferably, the engaging component includes a front shell with an arc-shaped structure, side plates, a front engaging plate, and a rear engaging plate. The side plates are symmetrically arranged on the left and right sides below the front shell, and guide posts are respectively provided on the outer sides of the side plates.

[0009] The front bite plate is provided with two vertical rows of front snap teeth and pressure teeth, the pressure teeth being located in the middle of the two vertical rows of front snap teeth. The rear bite plate is provided with two vertical rows of rear snap teeth and a spacer groove, the spacer groove being located in the middle of the two vertical rows of rear snap teeth. The two sides of the front bite plate and the two side plates are connected as a whole. The two sides of the rear bite plate and the two side plates are provided with a non-connecting notch groove structure. The faceplate is also provided with a disassembly notch corresponding to the spacer groove.

[0010] The pressure fixing cavity is provided with guide grooves on the left and right sides that match the guide post. The pressure fixing cavity is also provided with a rear row of teeth that match the rear snap teeth on one side and a front row of teeth that match the front snap teeth on the other side. The guide groove is located between the front row of teeth.

[0011] Preferably, an upper pressure gate is also provided between the side plates. The upper pressure gate is located inside the front engagement plate. A support plate is also provided in the middle of the pressure fixing cavity. The lower pressure gate is located between the support plates. When the engagement member is engaged with the pressure fixing cavity, the lower pressure gate, the front engagement plate and the upper pressure gate form an interlocking engagement state.

[0012] Preferably, the side plate has an L-shaped structure, and the inner side of the side plate is also provided with a vertical reinforcing rib connected to the bottom surface of the shell. The guide post and the vertical reinforcing rib are located on both sides of the side plate and are arranged opposite to each other. The upper pressure gate is located between the vertical reinforcing rib and the front engagement plate, and the pressure teeth below the front engagement plate are lower than the pressure teeth below the upper pressure gate.

[0013] Preferably, the housing is further provided with fixing parts at both ends, and the fixing parts are provided with one or more of the following: screw holes, fixing slots, or fixing adhesive.

[0014] Preferably, the surface of the face shell near the front bite plate is provided with a plurality of protrusions for increasing friction, and a first mark is provided in the center of the protrusions;

[0015] The surface of the faceplate near the rear engagement plate has a plurality of raised strips, and a second marking is provided above the raised strips.

[0016] Preferably, the support plate has an L-shaped structure, and the height of the pressure teeth above the lower pressure gate is less than the height of the guide groove; the ratio of the vertical distance from the center of the guide post to the rear engagement plate to the vertical distance from the center of the guide post to the front engagement plate is greater than or equal to 2.

[0017] A dimming power supply box employs a fixing device for preventing cable detachment. The middle of the housing is provided with a hollow connecting cavity that can accommodate an intelligent driving power module. The cable fixing cavity is symmetrically arranged at both ends of the connecting cavity. A wiring terminal is fixedly installed inside the cable fixing cavity, and the wiring terminal is electrically connected to the intelligent driving power module.

[0018] The intelligent drive power module can be electrically connected to the mains power through the terminal block at one end, and the intelligent drive power module can be electrically connected to the lamp through the terminal block at the other end.

[0019] Preferably, a range switch for adjusting the current is also provided on one side of the connecting cavity;

[0020] Several heat dissipation grooves are also provided on both sides of the surface of the connecting cavity.

[0021] Preferably, the intelligent drive power module further includes a communication module, which enables the intelligent drive power module to communicate with a handheld device.

[0022] The beneficial effects of this invention are as follows: through the cooperation of the guide post and the guide groove, after the rear teeth of the biting component engage with the rear teeth of the pressure-fixing cavity, the front teeth of the biting component and the front teeth of the pressure-fixing cavity can gradually engage tightly downwards with the guide post. With the guide post as the fulcrum, the front end can engage more tightly under the action of the lever principle, resulting in stronger biting force and better stability compared to the traditional structure. At the same time, a disassembly notch is provided on the shell, and only a pry bar is needed to separate the rear teeth of the biting component from the rear teeth of the pressure-fixing cavity, making disassembly simple and effortless. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the interlocking component of the present invention from a bottom view.

[0024] Figure 2 This is a top view of the interlocking component of the present invention.

[0025] Figure 3 This is a rear view of the interlocking component of the present invention;

[0026] Figure 4 This is a bottom view of the interlocking component of the present invention;

[0027] Figure 5 This is a three-dimensional structural diagram of the housing of the present invention;

[0028] Figure 6 This is a perspective view of the fixing device of the present invention;

[0029] Figure 7 This is a reference diagram showing the state of the housing and the engaging member before they are fastened together.

[0030] Figure 8 This is a cross-sectional view of the housing of the present invention;

[0031] Figure 9 This is a reference diagram showing a partial state of the housing and the engaging component before they are engaged.

[0032] Figure 10 This is a reference diagram showing a partial state during the engagement process of the housing and the engaging component of the present invention;

[0033] Figure 11 The dimming power supply box of the present invention. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1-11 As shown, a specific embodiment of the present invention is a fixing device for preventing cable detachment, comprising: a housing 1, wherein at least one wire pressing fixing cavity 3 is provided on the housing 1, and the wire pressing fixing cavity 3 is provided with a corrugated guide groove 301 and a lower wire pressing gate 302 for fixing the cable 7.

[0036] The engaging component 2 is rotatable and can be installed in the wire clamping cavity 2 of the housing 1. The lower part of the engaging component 2 can cooperate with the guide groove 301 and the lower clamping switch 302 to engage and fix the cable.

[0037] The engagement member 2 includes a curved surface shell 201, side plates 202, a front engagement plate 203 and a rear engagement plate 204. The side plates 202 are symmetrically arranged on the left and right sides below the surface shell 201, and guide posts 205 are respectively provided on the outer sides of the side plates 202.

[0038] To facilitate user operation, the surface of the faceplate 201 near the front bite plate 203 is provided with a plurality of raised dots 214 for increasing friction, and a first mark 216 is provided in the center of each raised dot 214; the surface of the faceplate 201 near the rear bite plate 204 is provided with a plurality of raised strips 215, and a second mark 217 is provided above each raised strip 215. Firstly, the raised dots 214 and raised strips 215 can increase friction and prevent slippage when pressing; at the same time, the first and second marks can be used together to facilitate the creation of operating instructions, allowing users to know how to install or disassemble the faceplate.

[0039] The front bite plate 203 is provided with two vertical rows of front snap teeth 206 and pressure teeth 207, with the pressure teeth 207 located between the two vertical rows of front snap teeth 206. The rear bite plate 204 is provided with two vertical rows of rear snap teeth 208 and a spacer groove 209, with the spacer groove 209 located between the two vertical rows of rear snap teeth 208. A transverse reinforcing rib 218 is also provided on the rear bite plate 204 above the spacer groove 209. The two sides of the front bite plate 203 and the two side plates 202 are connected as a whole. The two sides of the rear bite plate 204 and the two side plates 202 are provided with a non-connecting notch groove structure 210. The face shell 201 is also provided with a disassembly notch 211 corresponding to the spacer groove 209. Figure 5Insert the pry bar 8 into the disassembly notch 211 and pry the rear engagement plate 204 with force. The rear engagement plate 204 deforms under the action of the pry bar, causing the rear retaining tooth 208 to separate from the rear row tooth 304. Then, rotate and lift it upward with the guide post 205 as the lever fulcrum. Finally, the front retaining tooth 206 also separates from the front row tooth 305, thus completing the separation and disassembly.

[0040] When household appliances require electrical wires, if the cables are suspended for a long distance, their own weight or unexpected forces such as wind can pull them out of the appliance. This application can clamp the cable, ensuring that the cable slippage distance at the appliance cable interface does not exceed 0.5mm within a force range of 6 kg.

[0041] The pressure fixing cavity 3 has guide grooves 303 on the left and right sides that match the guide post 205. The pressure fixing cavity 3 also has a rear row of teeth 304 that match the rear buckle tooth 208 on one side and a front row of teeth 305 that match the front buckle tooth 206 on the other side. The guide groove 301 is located between the front row of teeth 305.

[0042] To more stably engage and fix the cable, an upper clamping gate 212 is also provided between the side plates 202. The upper clamping gate 212 is located inside the front clamping plate 203. A support plate 306 is also provided in the middle of the clamping cavity 3. A lower clamping gate 302 matching the upper clamping gate 212 is provided between the support plates 306. When the clamping member 2 is engaged with the clamping cavity 3, the lower clamping gate 302 is located between the front clamping plate 203 and the upper clamping gate 212 to form an interlocking engagement state.

[0043] To enable the guide post to provide a more stable support point, the side plate 202 has an L-shaped structure. The inner side of the side plate 202 is also provided with a vertical reinforcing rib 213 connected to the bottom surface of the face shell 201. The guide post 205 and the vertical reinforcing rib 213 are located on both sides of the side plate 202 and are arranged opposite to each other. The upper pressure gate 212 is located between the vertical reinforcing rib 213 and the front engagement plate 203. The pressure teeth below the front engagement plate 203 are lower than the pressure teeth below the upper pressure gate 212.

[0044] To facilitate the installation and fixation of the housing, the housing 1 is provided with fixing parts 5 at both ends. The fixing parts 5 are provided with one or more of the following: screw holes, fixing grooves 6, or fixing adhesive.

[0045] To better secure the cable, the support plate 306 has an L-shaped structure, and the height of the pressure teeth above the lower pressure switch 302 is less than the height of the guide groove 301.

[0046] By using the guide post as a fulcrum and employing the lever principle, the front teeth and front snap teeth mesh more tightly. The ratio of the vertical distance from the center of the guide post to the rear snap plate to the vertical distance from the center of the guide post to the front snap plate is greater than or equal to 2. Furthermore, due to the lever principle, prying open the rear teeth and rear snap teeth at their meshing point requires less effort during disassembly.

[0047] To facilitate the connection and installation of cables, the housing 1 has a hollow connecting cavity 4 in the middle that can accommodate the circuit board. The wire fixing cavity 3 is symmetrically arranged at both ends of the connecting cavity 4. The circuit board is also electrically connected to terminals at both ends, and the terminals are located inside the wire fixing cavity 3.

[0048] A dimming power supply box employs a fixing device for preventing cable detachment. The housing 1 has a hollow connecting cavity 4 in the middle that can accommodate an intelligent driving power module. The wire fixing cavity 3 is symmetrically arranged at both ends of the connecting cavity 4. A terminal block 11 is fixedly installed inside the wire fixing cavity 3. The terminal block 11 is electrically connected to the intelligent driving power module. The intelligent driving power module can be electrically connected to the mains power through the terminal block 11 at one end, and can be electrically connected to a lamp through the terminal block 11 at the other end.

[0049] To facilitate manual current control, a current adjustment switch 10 is provided on one side of the connecting cavity 4. Different current settings can be achieved through combinations of different switch positions. To enhance heat dissipation, several heat dissipation grooves 9 are also provided on both sides of the surface of the connecting cavity 4.

[0050] To facilitate intelligent control via mobile phones or other handheld devices, the intelligent drive power module also includes a communication module (one or more of Bluetooth, LoRa, or Wi-Fi modules), which enables the intelligent drive power module to communicate with handheld devices.

[0051] The dimming power supply box of this application can convert household AC power into DC power required by lighting fixtures, and allows users to control the connected lighting fixtures via Bluetooth or WIFI network using a mobile app, including turning them on and off, and adjusting brightness and color temperature. This dimming power supply box can transform ordinary ceiling lights, wall lights, ambient lights, and other lighting fixtures into smart lighting fixtures; its fixing device is easy to install (no screws or forceful hammering required), and after locking, it effectively and tightly grips the cables, preventing loosening and ensuring safe connection to mains power; for disassembly and replacement, the locking mechanism can be quickly separated from the housing by prying through the designated disassembly notch.

[0052] Traditional power supplies typically have cables extending directly out. Electricians seal these cables with tape after connecting them to the mains power. Since the mains power is 220V, exceeding the safe voltage, electric shock accidents are highly likely if the tape is damaged. Later, power boxes with connecting terminals appeared on the market. After the wires were electrically connected to the connecting terminals, the cover was fixed with screws. However, the connecting terminals alone cannot withstand pulling force, and there is a risk of the wires coming loose or making poor contact.

[0053] Later, a fixing device with a toothed interlocking structure appeared on the market (CN213185320U wire fixing device and LED power supply). It has a tight interlock, is easy to operate, and requires no screws. However, this structure requires considerable force to engage, it is difficult to judge whether the engagement is tight, and disassembly is inconvenient after engagement. Furthermore, light fixtures are usually suspended high up, and electricians typically stand on ladders, making operation extremely inconvenient. This application addresses these problems by using a lever principle, requiring only a small amount of force to press the interlocking component into the wire fixing cavity, ensuring a tight engagement while facilitating disassembly.

[0054] like Figure 9-10 During installation, apply slight force to the engaging component and tilt it backward. The engaging component's faceplate will then rotate along the guide post (lever fulcrum), and the engaging component will engage and fix itself to the housing (front locking teeth). The upper pressure switch will also apply a small force to the wire. The front engaging plate and side plate of the engaging component form a triangular rib support, and the engaging plate hardly deforms when the front teeth engage with the front locking teeth.

[0055] Next, move the device towards the rear of the meshing plate and press down firmly on the rear teeth. At this point, friction occurs between the lever fulcrum guide post and the guide groove on the shell, forming a lever fulcrum. The meshing plate, under pressure, will rotate along this fulcrum. Since the front teeth and front snap teeth are already engaged, the meshing plate will rotate around the front teeth as its center. Due to the lever force and the limiting effect of the guide groove, the upper wire clamp below the meshing plate continues to move downwards. After the rear teeth are deformed by compression, they will snap down one by one (the rear meshing plate is not connected to the side plate and can deform). The wire clamping strength of the lower wire clamp can be calculated by increasing the clamping force on the wire and by counting the number of rear snap teeth that engage in the second engagement. Based on this... Figure 10 For example, press down on the two buckles, with a pressing depth of 0.5mm-0.6mm.

[0056] Existing solutions are affected by the elasticity of the cable insulation, the friction of the plastic structure, and the deformation of the clips, resulting in a relatively large downward force, sometimes requiring tapping with a rubber mallet or a soft screwdriver handle. Determining whether the cable is properly secured is also difficult. Often, dragging is needed to confirm the installation, and once installed, removing the anti-slip structure is difficult if adjustments are needed. The fixing device in this application, because it uses the lever principle, requires only less force to clamp the cable, eliminating the need for forceful tapping; the clamping status is readily verifiable, eliminating the need for dragging to confirm clamping. In case of abnormalities, the anti-slip structure can be removed more easily and quickly.

[0057] This application utilizes the cooperation of guide posts and guide grooves to ensure that after the rear teeth of the engaging component engage with the rear teeth of the crease fixing cavity, the front teeth of the engaging component and the front teeth of the crease fixing cavity can gradually and tightly engage downwards with the guide posts. The further downwards the pressure is applied, the tighter the engagement becomes due to the lever principle with the guide posts as a fulcrum (generally providing a biting force of about 6 kg). Compared with traditional structures, this provides stronger biting force and better stability. Furthermore, a disassembly notch is provided on the outer shell, allowing the rear teeth of the engaging component to be separated from the rear teeth of the crease fixing cavity with just a pry bar, making disassembly simple and effortless.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any minor modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present invention should be included within the protection scope of the present invention.

Claims

1. A fixing device for preventing cable detachment, characterized in that, include: The housing has at least one wire clamping cavity, and the wire clamping cavity is provided with a guide groove and a lower wire clamp for fixing the cable. The engaging component is rotatable and can be pressed down to install in the wire clamping cavity of the housing. The lower part of the engaging component can cooperate with the guide groove and the lower wire clamp to engage and fix the cable. The engagement component includes a curved surface shell, side plates, a front engagement plate, and a rear engagement plate. The side plates are symmetrically arranged on the left and right sides below the surface shell, and guide posts are respectively provided on the outer sides of the side plates. The front bite plate is provided with two vertical rows of front snap teeth and pressure teeth, the pressure teeth being located in the middle of the two vertical rows of front snap teeth. The rear bite plate is provided with two vertical rows of rear snap teeth and a spacer groove, the spacer groove being located in the middle of the two vertical rows of rear snap teeth. The two sides of the front bite plate and the two side plates are connected as a whole. The two sides of the rear bite plate and the two side plates are provided with a non-connecting notch groove structure. The faceplate is also provided with a disassembly notch corresponding to the spacer groove. The left and right sides of the pressure fixing cavity are provided with guide grooves that match the guide post. One side of the pressure fixing cavity is also provided with a rear row of teeth that match the rear snap teeth. The other side of the pressure fixing cavity is also provided with a front row of teeth that match the front snap teeth. The guide groove is located between the front row of teeth. An upper wire clamp is also provided between the side plates. The upper wire clamp is located inside the front engagement plate. A support plate is also provided in the middle of the wire clamping cavity. The lower wire clamp is located between the support plates. When the engagement piece is engaged with the wire clamping cavity, the lower wire clamp, the front engagement plate and the upper wire clamp form an interlocking engagement state. The side plate has an L-shaped structure, and the inner side of the side plate is also provided with a vertical reinforcing rib connected to the bottom surface of the shell. The guide post and the vertical reinforcing rib are located on both sides of the side plate and are arranged opposite to each other. The upper pressure gate is located between the vertical reinforcing rib and the front bite plate. The pressure teeth below the front bite plate are lower than the pressure teeth below the upper pressure gate. The support plate has an L-shaped structure, and the height of the pressure teeth above the lower pressure gate is less than the height of the guide groove. The ratio of the vertical distance from the center of the guide post to the rear bite plate to the vertical distance from the center of the guide post to the front bite plate is greater than or equal to 2.

2. The fixing device for preventing cable detachment according to claim 1, characterized in that: The housing is also provided with fixing parts at both ends, and the fixing parts are provided with one or more of the following: screw holes, fixing slots, or fixing adhesive.

3. The fixing device for preventing cable detachment according to claim 1, characterized in that: The surface of the faceplate near the front engagement plate is provided with a plurality of protrusions for increasing friction, and a first mark is provided in the center of each protrusion. The surface of the faceplate near the rear bite plate has a plurality of raised strips, and a second mark is provided above the raised strips.

4. A dimming power supply box, characterized in that: The cable anti-detachment fixing device according to any one of claims 1-3 is provided in the middle of the housing, which has a hollow connecting cavity that can accommodate the intelligent drive power module. The wire clamping fixing cavity is symmetrically arranged at both ends of the connecting cavity. A wiring terminal is fixedly installed in the wire clamping fixing cavity, and the wiring terminal is electrically connected to the intelligent drive power module. The intelligent drive power module can be electrically connected to the mains power through the terminal block at one end, and the intelligent drive power module can be electrically connected to the lamp through the terminal block at the other end.

5. The dimming power supply box according to claim 4, characterized in that: A range switch for adjusting the current is also provided on one side of the connecting cavity; Several heat dissipation grooves are also provided on both sides of the surface of the connecting cavity.

6. The dimming power supply box according to claim 4, characterized in that: The intelligent drive power module also includes a communication module, which enables the intelligent drive power module to communicate with handheld devices.

Images