A screw locking device for operating mechanism

Abstract

The utility model provides a kind of lock screw device of operating mechanism, belong to lock screw device technical field, including clamp, screw gun subassembly, first drive component and second drive component, clamp includes base and movable seat, first positioning slot is provided on base, second positioning slot is provided on movable seat, first channel is provided on base, push rod is slidably arranged in first channel, the lower end of push rod is provided with linkage block, its upper end is connected with movable seat, spring is set on the push rod between linkage block and base, first drive component is used to drive push rod to move so that movable seat is at least in height relative to base Forming dislocation, second drive component is used to drive screw gun subassembly to lock screw on terminal component on movable seat.In the utility model, the flexible characteristics of soft wire are exactly utilized, the terminal component is dislocated and lifted, and then the screw is locked, to prevent the structure on the clamp and the associated equipment from blocking the screw locking, and the automatic locking of the screw is realized.

Description

Technical Field

[0001] This utility model relates to the field of screw-locking device technology, specifically to a screw-locking device with an operating mechanism. Background Technology

[0002] The operating mechanism of a circuit breaker includes a terminal assembly and a contact assembly, which are connected by a flexible wire. The terminal assembly includes a terminal block and a terminal frame, both of which need to be fixed with screws. The applicant has found that existing equipment is incompatible with this operating mechanism, thus relying primarily on manual screw tightening. This method has two major problems: first, screw tightening efficiency is extremely low, failing to meet the needs of mass production; second, manual operation is highly random, easily resulting in quality defects such as loose screws, stripped screws, and misalignment of the terminal block and terminal frame, directly affecting the assembly accuracy of the operating mechanism and the safety of the circuit breaker, severely restricting the automation level and product qualification rate of circuit breaker production. Therefore, there is an urgent need for a device that can adapt to this type of operating mechanism and automate screw tightening to overcome the drawbacks of manual operation. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide a screw-locking device for an operating mechanism.

[0004] The technical solution adopted by this utility model is as follows: This application provides a screw-locking device for an operating mechanism. The operating mechanism includes a terminal assembly and a contact assembly, which are connected by a flexible wire. It includes a clamp, a screw gun assembly, a first driving assembly, and a second driving assembly. The clamp includes a base and a movable seat. The base is provided with a first positioning groove for placing the contact assembly, and the movable seat is provided with a second positioning groove for placing the terminal assembly. The base is provided with a first channel, and a push rod is slidably disposed in the first channel. A linkage block is provided at the lower end of the push rod, and its upper end is connected to the movable seat. A spring is sleeved on the push rod between the linkage block and the base. The first driving assembly is used to drive the push rod to move so that the movable seat is misaligned with the base at least in height. The second driving assembly is used to drive the screw gun assembly to screw the terminal assembly on the movable seat.

[0005] In some embodiments, the upper end of the first channel is inclined toward the first positioning groove. The first driving assembly includes a first fixed seat, a first cylinder, a mounting plate, and a push block. The first cylinder is fixed on the first fixed seat and is arranged parallel to the first channel. The mounting plate is vertically fixed to the drive shaft of the first cylinder. The push block is L-shaped, with one end connected to the mounting plate and the other end located on the moving path of the linkage block. An oblong adjustment hole is provided on the push block along the moving direction of the linkage block. A threaded hole is provided on the mounting plate corresponding to the adjustment hole, and a bolt is connected through the adjustment hole and the threaded hole.

[0006] In some embodiments, the screw gun assembly is disposed on one side of the clamp, and a second fixing seat is disposed on the other side of the clamp. A first positioning cylinder and a second positioning cylinder are vertically disposed on the second fixing seat. A first pressure block is disposed at the end of the drive shaft of the first positioning cylinder, and the first pressure block is located above the first positioning groove. A second pressure block is disposed at the end of the drive shaft of the second positioning cylinder, and the second pressure block is located above the second positioning groove.

[0007] In some embodiments, the second fixed base is provided with a second channel, and a slider is slidably provided in the second channel. A pressing block is provided at one end of the slider near the second positioning groove, and a third driving component is provided at the other end. The third driving component is used to press against the terminal component when the second driving component drives the screw gun assembly to tighten the screw.

[0008] In some embodiments, a photoelectric sensor is provided on the second fixed base, and the photoelectric sensor is used to detect whether the movable base has moved into place.

[0009] In some embodiments, the front end of the pressing block is provided with a pressing groove adapted to the terminal assembly.

[0010] In some embodiments, the push rod includes a fixed plate, a push rod, and an inclined push block. The spring abuts between the linkage block and the fixed plate. Under the action of the spring, the fixed plate abuts against the base. One end of the push rod passes through the fixed plate and connects to the first channel and one end of the inclined push block. The other end of the inclined push block is connected to the movable seat.

[0011] In some embodiments, the second drive assembly includes a base, a first slide plate, and a second slide plate. The first and second slide plates are slidably disposed on the base. The second slide plate is located between the first slide plate and the clamp. A first drive cylinder and a second drive cylinder are respectively disposed on both sides of the base. The drive rod of the first drive cylinder is connected to the first slide plate, and the drive rod of the second drive cylinder is connected to the second slide plate. The screw gun assembly includes a screw-locking motor disposed on the first slide plate, a bit connected to the screw-locking motor, and a gun head. The gun head is disposed on the second slide plate and has a first screw channel and a second screw channel. The first screw channel and the bit are coaxially disposed. The second screw channel is used to connect with a screw feeding mechanism for feeding. The second screw channel is inclined relative to the first screw channel. Screw clamps are hinged to both sides of the gun head. The front end of the screw clamp is provided with an arc-shaped groove adapted to the screw, and an elastic element is provided between its rear end and the gun head, so that the two screw clamps clamp the screw.

[0012] The beneficial effects of this utility model are as follows: This utility model makes good use of the flexibility of the soft wire to raise the terminal assembly in a staggered manner before tightening the screw, preventing the structure on the fixture and related equipment from obstructing the screw tightening, thus realizing the automatic tightening of the screw. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0014] Figure 1 This is a schematic diagram of the operating mechanism in this utility model; Figure 2 This is a schematic diagram of a screw-locking device for an operating mechanism in this utility model. Figure 1 ; Figure 3 This is a partial schematic diagram of a screw-locking device for an operating mechanism in this utility model; Figure 4 This is a schematic diagram of the clamp in this utility model; Figure 5 This is a cross-sectional view of the clamp in this utility model; Figure 6 This is a schematic diagram of the first driving component in this utility model; Figure 7 This is a schematic diagram of a screw-locking device for an operating mechanism in this utility model. Figure 2 ; Figure 8 This is a schematic diagram of the gun head in this utility model; Figure 9 This is a cross-sectional view of the gun head in this utility model. Detailed Implementation

[0015] The following description provides specific application scenarios and requirements for this specification, intended to enable those skilled in the art to make and use the contents of this specification. Various partial modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but rather to the widest scope consistent with the claims.

[0016] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "lateral", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element or component to have a specific orientation, or to be constructed and operated in a specific orientation.

[0017] It should be noted that the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are only used to distinguish different components and should not be construed as limiting the embodiments of this application.

[0018] It should be noted that the terms "installation," "setup," "equipped with," "connection," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral structures; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts.

[0019] It should be noted that the terms "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "in some embodiments," "exemplarily," and "for example" is intended to present the relevant concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of this application.

[0020] Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] Regarding the accompanying drawings of this application, it should be clearly understood that the drawings are for illustrative and descriptive purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not necessarily drawn to scale.

[0022] This application provides a screw-locking device for an operating mechanism, specifically used for assembling such... Figure 1 The operating mechanism shown includes a terminal assembly 1 and a contact assembly 2, which are connected by a flexible wire 3. The terminal assembly includes a terminal block and a terminal frame, which are fixed by screws.

[0023] The screw-locking device includes a clamp 4, a screw gun assembly 5, a first drive assembly 6, and a second drive assembly 7. The clamp 4 includes a base 40 and a movable seat 41. The base 40 is provided with a first positioning groove 400 for placing the contact assembly 2, and the movable seat 41 is provided with a second positioning groove 410 for placing the terminal assembly 1. The first positioning groove 400 and the second positioning groove 410 should be set according to the compatibility of the parts they are positioned, which will not be described in detail here.

[0024] The base 40 is provided with a first channel 401, and a push rod 42 is slidably mounted on the first channel 401. A linkage block 420 is provided at the lower end of the push rod 42, and its upper end is connected to the movable seat 41. A spring 43 is sleeved on the push rod 42 between the linkage block 420 and the base 40. The first drive assembly 6 is used to drive the push rod 42 to move so that the movable seat 41 is misaligned with the base 40 at least in height. The second drive assembly 7 is used to drive the screw gun assembly 5 to tighten screws on the terminal assembly 1 on the movable seat 41. When the driving force of the first drive assembly 6 is removed, the spring 43 can push the push rod 42 to reset by its own elasticity, thereby driving the movable seat 41 back to its initial position. No additional reset drive component is required, simplifying the structure and reducing energy consumption.

[0025] This setup takes advantage of the flexibility of the flexible wire 3 to raise the terminal assembly 1 in a staggered manner before tightening the screws, preventing the structure on the fixture and related equipment from obstructing the screw tightening and achieving automatic screw tightening.

[0026] In some embodiments, the upper end of the first channel 401 is inclined toward the first positioning groove 400, which can convert the linear motion of the push rod 42 into a composite motion of lifting and translating of the movable seat 41, achieving a better avoidance effect and preventing obstruction in the direction of screw locking. The push rod 42 is the power transmission component of the movable seat 41, and its structure must ensure smooth movement and reliable reset. It includes a fixed plate 421, a push rod 422, and an inclined push block 423. The spring 43 abuts between the linkage block 420 and the fixed plate 421. Under the action of the spring 43, the fixed plate 421 abuts against the base 40. One end of the push rod 422 passes through the fixed plate 421 and connects to one end of the first channel 401 and the inclined push block 423. The other end of the inclined push block 423 is connected to the movable seat 41. The fixed plate 421 is circular, with a diameter larger than the aperture of the first channel 401, effectively protecting the base 40 of the clamp.

[0027] The first drive assembly 6 includes a first fixed base 60, a first cylinder 61, a mounting plate 62, and a push block 63. The first cylinder 61 is fixed on the first fixed base 60 and is arranged parallel to the first channel 401. The direction of the driving force is completely consistent with the moving direction of the push rod 42, which can prevent the push rod 42 from being subjected to lateral force and thus avoid wear or jamming, extend the service life of the push rod 42, and ensure motion accuracy. The mounting plate 62 is vertically fixed to the drive shaft of the first cylinder 61. The push block 63 is L-shaped, with one end connected to the mounting plate 62 and the other end located on the moving path of the linkage block 420. The mounting plate 62 increases the force-bearing area of ​​the push block 63, preventing the push block 63 from being damaged due to excessive local force.

[0028] The push block 63 has two elongated oval adjustment holes 630 along the moving direction of the linkage block 420. The mounting plate 62 has threaded holes corresponding to the adjustment holes 630. Bolts are used to connect the adjustment holes 630 and the threaded holes. This allows the relative distance between the push block 63 and the linkage block 420 to be changed by adjusting the position of the bolts within the adjustment holes 630, significantly improving the versatility of the equipment and eliminating the need to replace the entire drive assembly due to changes in workpiece specifications.

[0029] In some embodiments, the screw gun assembly 5 is disposed on one side of the clamp 4, and a second fixing seat 8 is disposed on the other side of the clamp 4. A first positioning cylinder 80 and a second positioning cylinder 81 are vertically disposed on the second fixing seat 8. A first pressure block 82 is disposed at the end of the drive shaft of the first positioning cylinder 80, and the first pressure block 82 is located above the first positioning groove 400. A second pressure block 83 is disposed at the end of the drive shaft of the second positioning cylinder 81, and the second pressure block 83 is located above the second positioning groove 410. With this arrangement, downward pressure can be applied to the contact assembly 2 and the terminal assembly 1 respectively, so as to achieve independent fixation of the two and avoid the workpiece shifting up and down during fastening. The bottom surfaces of the first pressure block 82 and the second pressure block 83 are both pasted with flexible pads or directly made of flexible materials such as silicone or rubber, which can prevent damage to the surface of the workpiece.

[0030] The second fixed base 8 is provided with a second channel 84, and a slider 85 is slidably disposed in the second channel 84. A pressing block 86 is provided at one end of the slider 85 near the second positioning groove 410, and a third driving component 87 is provided at the other end. The third driving component 87 is a cylinder or an electric push rod. The third driving component 87 is used to press against the terminal component 1 when the second driving component 7 drives the screw gun component 5 to tighten the screw. The front end of the pressing block 86 is provided with a pressing groove 860 that is adapted to the terminal component 1. The pressing groove 860 can completely fit the shape of the terminal component 1, increase the contact area, and prevent the terminal component 1 from rotating due to the rotational force of the screwdriver bit during tightening. At the same time, it prevents the terminal component 1 from deforming due to excessive local pressure. Preferably, the pressing block 86 is made of nylon material, which has both rigidity and wear resistance, and can avoid scratching the metal surface of the terminal component 1.

[0031] The second fixed base 8 is equipped with a photoelectric sensor 88, which is used to detect whether the movable base 41 has moved into place. When the movable base 41 is not in place, the photoelectric sensor 88 will send a signal to the equipment control system to prohibit subsequent positioning and locking actions, so as to avoid the screw stripping or the bit being damaged due to the alignment deviation, thereby improving the safety and reliability of the equipment.

[0032] In some embodiments, the second drive assembly 7 includes a base 70, a first slide plate 71, and a second slide plate 72. The first slide plate 71 and the second slide plate 72 are slidably disposed on the base 70 in sequence. The second slide plate 72 is located between the first slide plate 71 and the clamp 4. A first drive cylinder 73 and a second drive cylinder 74 are respectively disposed on both sides of the base 70. The drive rod of the first drive cylinder 73 is connected to the first slide plate 71, and the drive rod of the second drive cylinder 74 is connected to the second slide plate 72. The screw gun assembly 5 is an execution component for the fastening action, used to fasten screws into the terminal block and terminal frame of the terminal assembly 1. The screw gun assembly 5 includes a screw-fastening motor 50 disposed on the first slide plate 71, a bit 51 and a gun head 52 connected to the screw-fastening motor 50. The screw-fastening motor 50 provides rotational power for fastening. It adopts a servo motor, which has the advantages of adjustable speed, adapting to the fastening torque requirements of screws of different specifications, and high rotational accuracy, which can avoid over-tightening of screws due to excessive speed or incomplete tightening due to excessive speed.

[0033] The bit 51 is fixedly connected to the output shaft of the screw-locking motor 50, such as a chuck connection. Its head shape is adapted to the screw slot to transmit rotational torque. The bit 51 is made of high-speed steel, which is highly wear-resistant and has a long service life.

[0034] The screwdriver head 52 is a temporary storage and guiding component for screws. It is mounted on the second slide plate 72 and has a first screw channel 520 and a second screw channel 521. The first screw channel 520 is coaxial with the screwdriver bit 51, allowing the screwdriver bit 51 to pass through and align with the screw, ensuring the coaxiality of the screwdriver bit 51 and the screw, and preventing the screw from being misaligned during fastening. The second screw channel 521 is used to connect with an external screw feeding mechanism to realize automatic screw feeding. The second screw channel 521 is inclined relative to the first screw channel 520 at an angle of 30°-60°, which can avoid interference with the movement path of the screwdriver bit 51 and allow the screw to enter the screwdriver head 52 from the side, reducing the risk of the screw getting stuck in the channel.

[0035] Screw clips 53 are hinged to both sides of the gun head 52. The front end of each screw clip 53 has an arc-shaped groove adapted to the screw, and an elastic element is provided between its rear end and the gun head 52. This allows the two screw clips 53 to clamp the screw. The elastic force of the elastic element ensures that the arc-shaped grooves of the two screw clips 53 fit tightly against the screw head, achieving stable clamping of the screw and preventing it from falling off during the movement of the gun head 52. When the bit 51 pushes the screw downward, the screw will squeeze the arc-shaped groove, causing the screw clips 53 to open outward without affecting the screw fastening action. After fastening is completed, the bit 51 retracts, and the screw clips 53 return to their original position under the action of the elastic element, ready to immediately accept the next screw, enabling continuous operation.

[0036] Optionally, for information on this part of the structure, please refer to the applicant's earlier patent application with publication number CN220278820U, which discloses a locking bolt mechanism for a magnetic system.

[0037] In summary, after reading this detailed disclosure, those skilled in the art will understand that the foregoing detailed disclosure is presented by way of example only and is not restrictive. Although not explicitly stated herein, those skilled in the art will understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be made by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0038] Furthermore, it should be understood that in the foregoing description of the embodiments of this application, various features are combined in a single embodiment, drawing, or description for the purpose of simplifying the understanding of a feature. However, this does not mean that the combination of these features is necessary, and those skilled in the art may readily identify some of the devices as separate embodiments when reading this application. That is, the embodiments in this application can also be understood as an integration of multiple sub-embodiments. It is also valid when each sub-embodiment contains fewer than all the features of a single foregoing disclosed embodiment.

[0039] Finally, it should be understood that the embodiments disclosed herein are illustrative of the principles of the embodiments of this application. Other modified embodiments are also within the scope of this application. Therefore, the embodiments disclosed herein are merely examples and not limitations. Those skilled in the art can adopt alternative configurations to implement the applications in this application based on the embodiments in this application. Therefore, the embodiments of this application are not limited to the embodiments precisely described in the application.

Claims

1. A screw-locking device for an operating mechanism, the operating mechanism comprising a terminal assembly and a contact assembly, wherein the terminal assembly and the contact assembly are connected by a flexible wire, characterized in that, The device includes a clamp, a screwdriver assembly, a first drive assembly, and a second drive assembly. The clamp includes a base and a movable seat. The base has a first positioning groove for placing a contact assembly, and the movable seat has a second positioning groove for placing a terminal assembly. The base has a first channel through which a push rod is slidably mounted. The lower end of the push rod has a linkage block, and its upper end is connected to the movable seat. A spring is sleeved on the push rod between the linkage block and the base. The first drive assembly drives the push rod to move so that the movable seat is misaligned with the base, at least in height. The second drive assembly drives the screwdriver assembly to tighten screws on the terminal assembly on the movable seat.

2. The screw-locking device for an operating mechanism according to claim 1, characterized in that, The upper end of the first channel is inclined toward the first positioning groove. The first driving assembly includes a first fixed seat, a first cylinder, a mounting plate, and a push block. The first cylinder is fixed on the first fixed seat and is arranged parallel to the first channel. The mounting plate is vertically fixed to the drive shaft of the first cylinder. The push block is L-shaped, with one end connected to the mounting plate and the other end located on the moving path of the linkage block. An oblong adjustment hole is provided on the push block along the moving direction of the linkage block. A threaded hole is provided on the mounting plate corresponding to the adjustment hole, and a bolt is connected through the adjustment hole and the threaded hole.

3. The screw-locking device for an operating mechanism according to claim 1, characterized in that, The screw gun assembly is disposed on one side of the clamp, and a second fixed seat is disposed on the other side of the clamp. A first positioning cylinder and a second positioning cylinder are vertically disposed on the second fixed seat. A first pressure block is disposed at the end of the drive shaft of the first positioning cylinder, and the first pressure block is located above the first positioning groove. A second pressure block is disposed at the end of the drive shaft of the second positioning cylinder, and the second pressure block is located above the second positioning groove.

4. The screw-locking device for an operating mechanism according to claim 3, characterized in that, The second fixed base is provided with a second channel, and a slider is slidably provided in the second channel. A pressing block is provided at one end of the slider near the second positioning groove, and a third driving component is provided at the other end. The third driving component is used to press against the terminal component when the second driving component drives the screw gun assembly to tighten the screw.

5. The screw-locking device for an operating mechanism according to claim 3, characterized in that, The second fixed base is equipped with a photoelectric sensor, which is used to detect whether the movable base has moved into place.

6. The screw-locking device for an operating mechanism according to claim 4, characterized in that, The front end of the pressure block is provided with a pressure groove that is compatible with the terminal assembly.

7. The screw-locking device for an operating mechanism according to claim 3, characterized in that, The push rod includes a fixed plate, a push rod, and an inclined push block. The spring abuts between the linkage block and the fixed plate. Under the action of the spring, the fixed plate abuts against the base. One end of the push rod passes through the fixed plate and connects to the first channel and one end of the inclined push block. The other end of the inclined push block is connected to the movable seat.

8. The screw-locking device for an operating mechanism according to claim 1, characterized in that, The second drive assembly includes a base, a first sliding plate, and a second sliding plate. The first and second sliding plates are slidably disposed on the base. The second sliding plate is located between the first sliding plate and the clamp. A first drive cylinder and a second drive cylinder are respectively disposed on both sides of the base. The drive rod of the first drive cylinder is connected to the first sliding plate, and the drive rod of the second drive cylinder is connected to the second sliding plate. The screw gun assembly includes a screw-locking motor disposed on the first sliding plate, a bit connected to the screw-locking motor, and a gun head. The gun head is disposed on the second sliding plate and has a first screw channel and a second screw channel. The first screw channel and the bit are coaxially disposed. The second screw channel is used to connect with a screw feeding mechanism for feeding. The second screw channel is inclined relative to the first screw channel. Screw clamps are hinged to both sides of the gun head. The front end of the screw clamp is provided with an arc-shaped groove adapted to the screw, and an elastic element is disposed between its rear end and the gun head, so that the two screw clamps clamp the screw.

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