Screw locking device of vehicle-mounted power amplifier

Abstract

The utility model discloses a screw locking device of a vehicle-mounted power amplifier. The screw locking device comprises a mechanical arm; the mounting seat is arranged on the mechanical arm; the material taking barrel is used for picking up the screws, and the material taking barrel is arranged on the mounting base; the electric screw driver is used for enabling a screw to be downward and rotated into a screw hole of the vehicle-mounted power amplifier, the electric screw driver is arranged on the mounting base in a manner of being capable of moving in the vertical direction, the electric screw driver comprises a main body and a screw driver head, the main body is located above the material taking barrel, and the screw driver head is inserted into the material taking barrel in a manner of being capable of moving in the vertical direction; a sensor; the detection piece is matched with the sensor, and when the sensor makes contact with the detection piece or a preset distance is reached, the sensor is in a triggered state; one of the sensor and the detection piece is connected to a main body of the electric screwdriver so as to move up and down along with the electric screwdriver, and the other one is connected to the material taking barrel. According to the screw locking device of the vehicle-mounted power amplifier, the box body and the cover plate of the vehicle-mounted power amplifier can be automatically assembled, and meanwhile the screw locking precision is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle-mounted power amplifiers, and particularly relates to a screw locking device for a vehicle-mounted power amplifier. Background Art

[0002] In the existing automobile modification market, automobile audio modification occupies a large share. A vehicle-mounted power amplifier must be used during the modification of a vehicle audio system. A vehicle-mounted power amplifier is an audio power amplifier in a vehicle audio and video system. Its function is to select and preprocess the input audio signal, perform power amplification, so that the electrical signal has the ability to drive the speaker. A vehicle-mounted power amplifier generally includes a box body for accommodating a circuit board and a cover plate, and the cover plate and the box body are fixedly connected by screws. The traditional method of manually locking screws is relatively inefficient. If an automatic screw locking device is used, the accuracy of screw locking needs to be considered to ensure that the screws are locked in place without exceeding the predetermined locking depth and damaging the product. Content of the Utility Model

[0003] In view of this, the utility model provides a screw locking device for a vehicle-mounted power amplifier, which can realize the automatic assembly of the box body and the cover plate of the vehicle-mounted power amplifier, and at the same time ensure the screw locking accuracy.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A screw locking device for a vehicle-mounted power amplifier, comprising:

[0006] A robotic arm;

[0007] A mounting seat, which is arranged on the robotic arm;

[0008] A screw picking cylinder, which is used for picking up screws, and the screw picking cylinder is arranged on the mounting seat;

[0009] An electric screwdriver, which is used to make the screw move downward and rotate into the screw hole of the vehicle-mounted power amplifier. The electric screwdriver is movably arranged on the mounting seat in the up and down direction. The electric screwdriver includes a main body and a screwdriver head. The main body is located above the screw picking cylinder, and the screwdriver head is movably inserted into the screw picking cylinder in the up and down direction;

[0010] A sensor;

[0011] A detection member, which cooperates with the sensor. When the sensor contacts or reaches a predetermined distance from the detection member, the sensor is in a triggered state;

[0012] Wherein, one of the sensor and the detection member is connected to the main body of the electric screwdriver to move up and down with the electric screwdriver, and the other is connected to the screw picking cylinder.

[0013] In some preferred embodiments, the sensor is a travel switch and the detection member is a detection bump.

[0014] In some more preferred embodiments, a fixing block is provided on the mounting base, the material taking cylinder is arranged on the fixing block, and the detection bump is arranged on the fixing block and protrudes upward from the upper surface of the fixing block.

[0015] In some further preferred embodiments, the mounting base has a guide rail extending in the vertical direction. The screw locking device further includes a slider located above the fixing block. The slider is movably arranged on the guide rail in the vertical direction. The electric screwdriver is arranged on the slider, and the sensor is arranged on the slider.

[0016] In some more preferred embodiments, a lifting drive mechanism is provided on the mounting base. The lifting drive mechanism is connected to the slider to drive the slider to slide in the vertical direction.

[0017] In some more preferred embodiments, an elastic member is arranged between the slider and the fixing block. Further, the elastic member is a compression spring.

[0018] In some preferred embodiments, the screw locking device further includes a negative pressure mechanism for providing negative pressure inside the material taking cylinder.

[0019] In some more preferred embodiments, a negative pressure interface is provided on the electric screwdriver. The negative pressure interface is communicated with the negative pressure mechanism. A negative pressure channel is provided on the electric screwdriver, and the negative pressure channel is communicated with the inner cavity of the material taking cylinder.

[0020] In some preferred embodiments, the screw locking device further includes a controller. The input end of the controller is electrically connected to the sensor, and the output end of the controller is electrically connected to the power source of the electric screwdriver.

[0021] In some preferred embodiments, the mounting base is movably arranged on the robotic arm in the vertical direction. The robotic arm includes a first arm and a second arm. The first arm and the second arm are rotatably connected about a rotation axis extending in the vertical direction to drive the material taking cylinder to move to the material taking turntable or the in-vehicle power amplifier.

[0022] In some more preferred embodiments, the screw locking device further includes a product transfer mechanism. The material taking turntable is arranged beside the product transfer mechanism. The product transfer mechanism passes below the mounting base to drive the in-vehicle power amplifier to be locked in sequence and conveyed below the electric screwdriver.

[0023] The present utility model adopts the above solutions and has the following advantages compared with the prior art:

[0024] The screw locking device of the in-vehicle power amplifier of the present utility model fixes the material taking cylinder relative to the mounting seat, the electric screwdriver moves up and down relative to the material taking cylinder, and one of the sensor and the detecting member moves up and down with the electric screwdriver, and the other is arranged on the material taking sleeve. When locking the screw, as the screw moves down, the electric screwdriver moves down synchronously, and the sensor or the detecting member also moves down synchronously. When the sensor is in the triggered state, it indicates that the screw has moved down a predetermined distance and the screw locking is in place. At this time, the electric screwdriver stops moving down, realizing the automatic assembly of the box body and the cover plate of the in-vehicle power amplifier, and at the same time ensuring the screw locking accuracy, avoiding the connection strength not meeting the standard caused by insufficient locking depth, or product damage caused by over-deep locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the present utility model, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0026] Figure 1 FIG. 10 is a perspective view of a screw locking device of an in-vehicle power amplifier according to an embodiment of the present utility model from one perspective.

[0027] Figure 2 FIG. 14 is a perspective view of a part of a screw locking device of an in-vehicle power amplifier according to an embodiment of the present utility model from another perspective.

[0028] Figure 3 FIG. 18 is a front view of a part of a screw locking device of an in-vehicle power amplifier according to an embodiment of the present utility model.

[0029] Figure 4 FIG. 22 is a side view of a part of a screw locking device of an in-vehicle power amplifier according to an embodiment of the present utility model.

[0030] Figure 5 FIG. 26 is an exploded view of an in-vehicle power amplifier according to an embodiment of the present utility model.

[0031] Among them,

[0032] 1. Robotic arm; 11. First arm; 12. Second arm; 13. Lifting rod;

[0033] 2. Mounting seat; 21. Guide rail; 22. Slide block; 23. Fixed block; 24. Compression spring; 241. Spring rod; 25. Lifting drive mechanism;

[0034] 3. Material taking cylinder;

[0035] 4. Electric screwdriver; 41. Main body; 42. Screwdriver bit; 43. Negative pressure interface;

[0036] 5. Sensor;

[0037] 6. Detection part;

[0038] 7. Vehicle-mounted power amplifier; 70. Screw; 71. Box body; 72. Cover plate; 73. Circuit board. Specific implementation manner

[0039] The following elaborates on the preferred embodiments of the present utility model in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art. It should be noted here that the description of these embodiments is used to help understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0040] Figures 1 to 4 Shows a screw locking device for a vehicle-mounted power amplifier according to this embodiment. Figure 5 Shows a vehicle-mounted power amplifier 7 that can adopt the screw locking device. The vehicle-mounted power amplifier 7 is a component of the vehicle audio system, which is installed in the vehicle and used to provide an audio signal fed to the vehicle speakers to drive the speakers for electro-acoustic conversion. As Figure 5 shown, the vehicle-mounted power amplifier 7 includes a box body 71 and a cover plate 72, which are locked tightly by a plurality of screws 70. The circuit board 73 of the vehicle-mounted power amplifier 7 is fixed between the box body 71 and the cover plate 72. Electronic components, including power amplifiers, etc., are arranged on the circuit board 73. A heat sink may also be provided on the box body 71 for dissipating the heat of the components on the circuit board 73. The screw locking device of this embodiment is used to realize the automatic assembly of the box body 71 and the cover plate 72, and automatically lock a plurality of screws 70 onto the box body 71 and the cover plate 72.

[0041] Combined with Figures 1 to 4 shown, the screw locking device of the vehicle-mounted power amplifier 7 includes a robotic arm 1. The robotic arm 1 is installed on the workbench of the screw locking device to provide multiple degrees of freedom of movement. The robotic arm 1 includes a first arm 11 and a second arm 12. The first arm 11 and the second arm 12 are rotatably connected about a rotation axis extending vertically, and the second arm 12 is also rotatably arranged on the workbench about another rotation axis extending vertically, so that it can rotate or swing in the horizontal plane.

[0042] An installation seat 2 is provided on the robotic arm 1. Further, the installation seat 2 is movably arranged on the robotic arm 1 in the up and down direction. Specifically, in the example shown in the drawings, a lifting rod 13 is passed through the first arm 11. The lifting rod 13 can move in the up and down direction, and the installation seat 2 is fixed at the lower end of the lifting rod. Therefore, the installation seat 2 can move up and down, and can also be carried by the robotic arm 1 to move in the horizontal plane.

[0043] The screw locking device further includes a screw pick-up cylinder 3. The screw pick-up cylinder 3 is used to pick up the screw 70, and the screw pick-up cylinder 3 is arranged on the mounting base 2. Specifically, a fixing block 23 is provided on the mounting base 2, and the screw pick-up cylinder 3 is arranged on the fixing block 23. Among them, the fixing block 23 is fixed on the mounting base 2, and the screw pick-up cylinder 3 is fixed on the fixing block 23. For example, the fixing block 23 is inserted into the fixing block 23, and the screw pick-up cylinder 3 is hollow and open at the lower end. There is negative pressure inside the screw pick-up cylinder 3 to suck the screw 70, and the screw 70 is pre-positioned inside the screw pick-up cylinder 3. A positioning structure for positioning the screw 70, such as a positioning hole wall or a positioning step, etc., is provided inside the lower end of the screw pick-up cylinder 3.

[0044] The screw locking device further includes an electric screwdriver 4. The electric screwdriver 4 is used to move the screw 70 downward and rotate it into the screw hole of the vehicle-mounted power amplifier 7. The electric screwdriver 4 is movably arranged on the mounting base 2 in the up-and-down direction. The electric screwdriver 4 includes a main body 41 and a screwdriver bit 42. The main body 41 is located above the screw pick-up cylinder 3, and the screwdriver bit 42 is movably inserted into the screw pick-up cylinder 3 in the up-and-down direction. Among them, the main body 41 part of the electric screwdriver 4 includes a rotating motor, and the rotating motor can drive the screwdriver bit 42 to rotate. During the process of locking the screw 70, while the screwdriver bit 42 rotates, the electric screwdriver 4 as a whole moves downward, so as to screw the screw 70 into the screw hole of the vehicle-mounted power amplifier 7. The specific structure of the electric screwdriver 4 is not the invention key point of the present utility model, and an electric screwdriver known in the prior art can be adopted, which will not be elaborated here.

[0045] The mounting base 2 has a guide rail 21 extending in the up-and-down direction. The screw locking device further includes a slider 22. The slider 22 is located above the fixing block 23, and the slider 22 is movably arranged on the guide rail 21 in the up-and-down direction. The electric screwdriver 4 is arranged on the slider 22. Specifically, in the example shown in the attached drawing, the electric screwdriver 4 is fixed on the slider 22. A lifting drive mechanism 25 is provided on the mounting base 2. The lifting drive mechanism 25 is connected to the slider 22 to drive the slider 22 to slide in the up-and-down direction. The lifting drive mechanism 26 can adopt a motor or a cylinder, etc. as the power source.

[0046] The screw locking device further includes a sensor 5 and a detecting member 6. The sensor 5 and the detecting member 6 cooperate with each other. When the sensor 5 and the detecting member 6 are in contact or reach a predetermined distance, the sensor 5 is in a triggered state. Among them, one of the sensor 5 and the detecting member 6 is connected to the main body 41 of the electric screwdriver 4 to move up and down with the electric screwdriver 4, and the other is connected to the material taking cylinder 3. Specifically, in this embodiment, the sensor 5 is arranged on the slider 22, and the detecting bump is arranged on the fixed block 23 and protrudes upward from the upper surface of the fixed block 23. The sensor 5 is a travel switch, and the detecting member 6 is a detecting bump. When the travel switch contacts the detecting bump, the travel switch is triggered. Further, the screw locking device further includes a controller. The input end of the controller is electrically connected to the travel switch, and the output end of the controller is electrically connected to the power source (such as a rotating motor) of the electric screwdriver 4; when the travel switch is triggered, after the controller receives the detection signal, it turns off the power source of the electric screwdriver 4.

[0047] Further, an elastic member is provided between the slider 22 and the fixed block 23. Specifically, the elastic member is a compression spring 24. A spring rod 241 extending downward is provided on the slider 22, and the compression spring 24 is sleeved on the spring rod 241. The upper end of the compression spring 24 abuts against the slider 22, and the lower end of the compression spring 24 abuts against the fixed block 23. The compression spring 24 can buffer, especially can provide buffering when the sensor 5 moves down with the electric screwdriver 4, slow down the collision impact between the sensor 5 and the detecting member 6, and protect the device.

[0048] The screw locking device further includes a negative pressure mechanism for providing negative pressure in the material taking cylinder 3, such as a negative pressure pump. A negative pressure interface 43 is provided on the electric screwdriver 4. The negative pressure interface 43 is communicated with the negative pressure mechanism. A negative pressure channel is provided on the electric screwdriver 4, and the negative pressure channel is communicated with the inner cavity of the material taking cylinder 3. Further, the lower end of the screwdriver head 42 is always located in the material taking cylinder 3, and a sealing member is provided between the upper end of the material taking cylinder 3 and the screwdriver head 42 to ensure that a certain negative pressure level is maintained in the material taking sleeve.

[0049] The screw locking device further includes a product transmission mechanism. The material taking turntable is arranged beside the product transmission mechanism. The product transmission mechanism passes under the mounting seat 2 to drive the in-vehicle power amplifier 7 to be locked to be conveyed below the electric screwdriver 4 in turn. The product transmission mechanism includes a product conveying line, such as a synchronous belt conveying mechanism. The material taking cylinder 3 is driven by the robotic arm 1 to move to the material taking turntable or the in-vehicle power amplifier 7.

[0050] The screw locking device of the in-vehicle power amplifier 7 in this embodiment fixes the material taking cylinder 3 relative to the mounting base 2, enables the electric screwdriver 4 to move up and down relative to the material taking cylinder 3, and enables one of the sensor 5 and the detecting member 6 to move up and down with the electric screwdriver 4, while the other is arranged on the material taking sleeve. When locking the screw, as the screw moves down, the electric screwdriver 4 moves down synchronously, and the sensor 5 or the detecting member 6 also moves down synchronously. When the sensor 5 is in the triggered state, it indicates that the screw has moved down a predetermined distance and the screw locking is in place. At this time, the electric screwdriver 4 stops moving down, realizing the automatic assembly of the box body 71 and the cover plate 72 of the in-vehicle power amplifier 7, while ensuring the screw locking accuracy, avoiding the connection strength not meeting the standard due to insufficient locking depth, or product damage caused by over-deep locking.

[0051] As shown in this specification and the claims, the terms "comprising" and "including" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The term "and / or" used herein includes any combination of one or more of the related listed items.

[0052] It should be noted that, unless otherwise specified, when a certain feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right, etc. descriptions used in the present utility model are only relative to the mutual positional relationship of the various components of the present utility model in the drawings.

[0053] The above embodiments are only for illustrating the technical concept and features of the present utility model, and are a preferred embodiment. The purpose is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly, and it cannot be used to limit the protection scope of the present utility model. Any equivalent transformation or modification made according to the principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A screw locking device for a vehicle-mounted power amplifier, characterized in that: include: Robotic arm; A mounting base, which is arranged on the mechanical arm; A material taking barrel, which is used to pick up screws, and the material taking barrel is arranged on the mounting seat; An electric screwdriver, used to drive a screw downward and rotate it into a screw hole of the vehicle-mounted amplifier, the electric screwdriver being movably disposed on the mounting seat in an up-and-down direction, the electric screwdriver comprising a main body and a screwdriver head, the main body being located above the material taking barrel, and the screwdriver head being movably inserted into the material taking barrel in an up-and-down direction; sensor; A detection member, which cooperates with the sensor, and when the sensor and the detection member are in contact or reach a predetermined distance, the sensor is in a triggering state; Wherein, one of the sensor and the detection member is connected to the main body of the electric screwdriver to move up and down with the electric screwdriver, and the other is connected to the material taking barrel.

2. The screw locking device according to claim 1, characterized in that: The sensor is a travel switch, the detection element is a detection convex block, and the sensor is in a triggered state when the travel switch and the detection convex block are in contact.

3. The screw locking device according to claim 2, characterized in that: A fixing block is arranged on the mounting seat, the material taking barrel is arranged on the fixing block, and the detection convex block is arranged on the fixing block and protrudes upward from the upper surface of the fixing block.

4. The screw locking device according to claim 3, characterized in that: The mounting seat has a guide rail extending in the up-down direction, the screw locking device also includes a slider, the slider is located above the fixed block, the slider is movably arranged on the guide rail in the up-down direction, the electric screwdriver is arranged on the slider, and the sensor is arranged on the slider.

5. The screw locking device according to claim 4, characterized in that: The mounting seat is provided with a lifting drive mechanism, and the lifting drive mechanism is connected to the slider to drive the slider to slide in the up and down directions.

6. The screw locking device according to claim 4, characterized in that: An elastic member is arranged between the sliding block and the fixing block.

7. The screw locking device according to any one of claims 1 to 6, characterized in that: The screw locking device also includes a negative pressure mechanism for providing negative pressure in the material taking barrel. The electric screwdriver is provided with a negative pressure interface, the negative pressure interface is connected to the negative pressure mechanism, and the electric screwdriver is provided with a negative pressure channel, the negative pressure channel is connected to the inner cavity of the material taking barrel.

8. The screw locking device according to any one of claims 1 to 6, characterized in that: The screw locking device also includes a controller, an input end of the controller is electrically connected to the sensor, and an output end of the controller is electrically connected to a power source of the electric screwdriver.

9. The screw locking device according to any one of claims 1 to 6, characterized in that: The mounting seat can be movably arranged on the mechanical arm in the up and down directions; the mechanical arm includes a first arm and a second arm, and the first arm and the second arm can be rotatably connected around a rotating shaft extending up and down to drive the material taking barrel to move to the material taking turntable or the vehicle-mounted power amplifier.

10. The screw locking device according to claim 9, characterized in that: The screw locking device also includes a product transmission mechanism, the material picking turntable is arranged beside the product transmission mechanism, and the product transmission mechanism passes under the mounting seat to drive the vehicle-mounted power amplifier to be locked to be transported to the bottom of the electric screwdriver in sequence.

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