A semi-automatically controlled retractable screwdriver

Abstract

The application relates to a semi-automatic telescopic screwdriver, which comprises a control system and a screwdriver shell, the screwdriver shell is provided with an assembly hole allowing the screwdriver rod to extend or contract, the rear end of the screwdriver rod is detachably installed on the connecting seat of a rotating motor, the rotating motor is installed on a sliding frame, the sliding frame can slide transversely in the screwdriver shell, and the rear end of the sliding frame is connected with a push rod motor. The application has high automation degree, greatly liberates the hands of the staff, and enables the staff to simply operate in extreme conditions, which is convenient and fast.

Description

Technical Field

[0001] This invention belongs to the field of mechanical tool technology, and in particular relates to a semi-automatic telescopic screwdriver. Background Technology

[0002] Traditional screwdrivers on the market require a hook and latch for hanging or unhooking, thus occupying at least one hand, which is very inconvenient for working at heights or in extreme conditions. A portable semi-automatic screw-tightening device, patent number CN202110698497.9, includes a fixed sleeve, a transmission mechanism, and a screw-tightening mechanism. A pressing rod is housed inside the fixed sleeve, a driven rod is located on one side of the fixed sleeve, and an electric screwdriver is located on the other side of the driven rod. The transmission mechanism is located between the fixed sleeve and the driven rod, and includes a transmission shaft, a linkage gear, and locking teeth. The transmission shaft is located inside the fixed sleeve, the linkage gear is fixedly sleeved on one side of the transmission shaft, and there are two sets of locking teeth. The screw-tightening mechanism is located on one side of the driven rod. The advantages of this invention are: by using the transmission mechanism design, pressing the pressing rod drives the transmission mechanism, which in turn drives the driven rod to move in the opposite direction. This allows the electric screwdriver to rise synchronously in the opposite direction, thus tightening the nut to the outside of the bolt. Furthermore, the operator can operate the device indoors by extending their arm out of a window. There is still a problem that requires one hand to operate. Summary of the Invention

[0003] (I) Purpose of the Invention

[0004] To overcome the above shortcomings, the purpose of this invention is to provide a semi-automatic telescopic screwdriver to solve the aforementioned technical problems.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the technical solution provided in this application is as follows:

[0007] A semi-automatic telescopic screwdriver includes a central control system and a screwdriver housing. The screwdriver housing has an assembly hole that allows the screwdriver shank to extend or retract. The rear end of the screwdriver shank is detachably mounted on a connecting seat of a rotary motor. The rotary motor is mounted on a sliding frame, which can slide laterally within the screwdriver housing. The rear end of the sliding frame is connected to a push rod motor.

[0008] Preferably, a limiting wheel is fixedly provided on the screwdriver housing, and a limiting hole is provided at the center of the limiting wheel, which is concentric with the screwdriver shank, and the screwdriver shank passes through the limiting hole.

[0009] Preferably, the connecting seat includes a ratchet latch, which has multiple rotating ratchets inside. The rear end of the screwdriver bar has a threaded groove. During installation, the screwdriver bar is inserted into the center between the rotating ratchets, and the screwdriver bar is rotated to lock the screw in place. During removal, the screwdriver bar is rotated in the opposite direction, which in turn drives the rotating ratchets to rotate in the opposite direction to loosen the screwdriver bar.

[0010] Preferably, the sliding frame includes a fixed frame fixedly connected to the rotating motor and a following trolley connected to the fixed frame. The screwdriver housing is provided with a guide rail corresponding to the following trolley. The following trolley is fixed on the guide rail by inwardly buckled wheels. Limiting buffer baffles are provided at both the front and rear ends of the guide rail. The following trolley is provided with a cable-carrying pulley. The cable-carrying pulley is provided with a signal line and a power line connected to the rotating motor. The ends of the signal line and the power line are connected to a spring cable reel.

[0011] Preferably, the fixing frame includes two layers of clamps, and a plurality of buffer springs are provided between the clamps.

[0012] Preferably, the centralized control system includes a centralized control sleeve corresponding to the arm and a centralized control plate corresponding to the hand. The centralized control sleeve and the centralized control plate are connected by a dustproof pleat. A triggering device is provided inside the dustproof pleat. The screwdriver housing is mounted on the centralized control sleeve.

[0013] Preferably, a storage battery is installed inside the central control sleeve.

[0014] Beneficial effects:

[0015] This invention has a high degree of automation, which greatly frees up the hands of the staff, making it easy and quick for them to operate even in extreme situations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of the screwdriver housing of the present invention;

[0017] Figure 2 This is a diagram of a ratchet latch structure according to an embodiment of the present invention;

[0018] Figure 3 This is a structural diagram of a centralized control system according to one embodiment of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the following detailed embodiments are described in conjunction with the appendix. Figure 1-3 The present invention will be described in further detail below. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0020] The present invention provides a semi-automatic control telescopic screwdriver, including a centralized control system and a screwdriver housing 12. The screwdriver housing 12 is provided with an assembly hole 8 that allows the screwdriver shank 11 to extend or retract. A limiting wheel 10 is fixedly installed on the screwdriver housing 12. The center of the limiting wheel 10 is provided with a limiting hole 9 concentrically arranged with the screwdriver shank 11. The screwdriver shank 11 passes through the limiting hole 9. The setting of the limiting wheel 10 can prevent the screwdriver shank 11 from shaking or deviating due to vibration during rotation.

[0021] The rear end of the screwdriver shank 11 is detachably mounted on the connecting seat of the rotary motor 14. The connecting seat includes a ratchet latch 13, which contains multiple rotating ratchet wheels 17. The rear end of the screwdriver shank 11 has a threaded groove. During installation, the screwdriver shank 11 is inserted into the center between the rotating ratchet wheels 17, and the screwdriver shank 11 is rotated to lock. During removal, the screwdriver shank 11 is rotated in the opposite direction, thereby causing the rotating ratchet wheels 17 to rotate in the opposite direction to loosen. The rotary motor 14 receives signals from the centralized control system and starts or stops according to instructions. The rotation of the rotary motor 14 drives the screwdriver shank mounted on the ratchet latch to rotate, thereby realizing the operation.

[0022] The rotary motor 14 is mounted on a sliding frame, which can slide laterally within the screwdriver housing 12. The rear end of the sliding frame is connected to the push rod motor 1. The sliding frame includes a fixed frame fixedly connected to the rotary motor 14 and a following carriage 3 connected to the fixed frame. The screwdriver housing 12 has a guide rail 6 corresponding to the following carriage 3. The following carriage 3 is fixed to the guide rail 6 by inwardly fastened wheels 5. Both the front and rear ends of the guide rail 6 are provided with limiting and buffering baffles 7, which serve to limit and buffer movement. The following carriage 3 is provided with a cable routing pulley 4, which carries a signal line and a power line connected to the rotary motor 14. The signal line and power line can extend synchronously with the following carriage 3 after the rotary motor 14 extends through the cable routing pulley 4. The ends of the signal line and power line are connected to a spring reel 2, which is a spring structure that can retract or extend the cable.

[0023] When the screwdriver shank 11 needs to be extended, the push rod motor pushes the fixing bracket to move the screwdriver shank within the screwdriver housing. The follower also moves along the guide rail, ensuring that the screwdriver shank's movement is always within the allowable stroke. This allows the screwdriver shank to extend from the screwdriver housing and also allows for adjustment of the extension length, improving its usability. When it needs to be stored, the push rod motor drives the fixing bracket to retract, thereby retracting the screwdriver shank.

[0024] The fixing frame includes two layers of clamping plates 15, and multiple buffer springs 16 are provided between the clamping plates 15 to provide a buffering effect.

[0025] The centralized control system includes a centralized control sleeve 18 corresponding to the arm and a centralized control plate 21 corresponding to the hand. The centralized control sleeve 18 and the centralized control plate 21 are connected by a dustproof pleat 22, within which a trigger device 20 is installed. The screwdriver housing 12 is mounted on the centralized control sleeve. A storage battery 19 is installed inside the centralized control sleeve 18. The control circuit, a microcontroller (STM) fixed in the centralized control sleeve, is capable of multiple encodings and its main functions are counting and sending action commands. The storage battery 19 is located at the rear end of the centralized control sleeve 18 and is removable for replacement and charging.

[0026] In the stationary state, the screwdriver bar is placed inside the cylinder of the moving part, and its bottom is locked by the ratchet. There is a limit wheel at the front. The rotating motor is stationary, the push rod motor extension rod is in a stationary retracted state, the following car is at the rear end of the guide rail, and it is against the rear limit plate. The rear end of the cable connecting the rotating motor is retracted into the cable reel.

[0027] In operation, upon receiving an extension command from the control circuit, the push rod motor activates, extending the telescopic rod and pushing the mounting bracket and rotary motor forward. The following vehicle slides forward on the guide rail, and the cable is pulled out of the cable reel, extending along with the following vehicle. The maximum length of the telescopic rod, which is also the maximum length of the following vehicle's guide rail, is the length from the ratchet latch to the limit wheel. Upon receiving a rotation command from the control circuit, the rotary motor activates, and the screwdriver begins to rotate under the limit wheel's control. Upon receiving a stop command from the control circuit, the rotary motor stops, and the screwdriver stops rotating. Upon receiving a retraction command from the control circuit, the push rod motor retracts the telescopic rod, and the mounting bracket and rotary motor return to their initial positions. The following vehicle also retracts synchronously to its initial position via the fixed connection, the cable is wound up by the cable reel, and the screwdriver shaft retracts into the reel.

[0028] This invention has a high degree of automation, which greatly frees up the hands of the staff, making it easy and quick for them to operate even in extreme situations.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A semi-automatic telescopic screwdriver, characterized in that, The device includes a centralized control system and a screwdriver housing. The screwdriver housing has a mounting hole that allows the screwdriver shank to extend or retract. The rear end of the screwdriver shank is detachably mounted on a connecting seat for a rotating motor. The rotating motor is mounted on a sliding frame, which can slide laterally within the screwdriver housing. The rear end of the sliding frame is connected to a push rod motor. The connecting seat includes a ratchet latch with multiple rotating ratchets inside. The rear end of the screwdriver shank has a threaded groove. During installation, the threaded shank is inserted into the center between the rotating ratchets, and rotating the threaded shank locks it in place. During removal, the threaded shank is rotated in the opposite direction, causing the rotating ratchets to rotate in the opposite direction, thus loosening the screwdriver.

2. The semi-automatic telescopic screwdriver according to claim 1, characterized in that, A limiting wheel is fixedly installed on the screwdriver housing, and a limiting hole is provided at the center of the limiting wheel, which is concentric with the screwdriver shaft, and the screwdriver shaft passes through the limiting hole.

3. The semi-automatic telescopic screwdriver according to claim 1, characterized in that, The sliding frame includes a fixed frame fixedly connected to the rotating motor and a following trolley connected to the fixed frame. The screwdriver housing has a guide rail corresponding to the following trolley. The following trolley is fixed on the guide rail by inwardly buckled wheels. Limiting buffer baffles are provided at both the front and rear ends of the guide rail. The following trolley is provided with a cable-carrying pulley. The cable-carrying pulley is provided with a signal line and a power line connected to the rotating motor. The ends of the signal line and the power line are connected to a spring cable reel.

4. A semi-automatic telescopic screwdriver according to claim 3, characterized in that, The fixing frame includes two layers of clamps, and multiple buffer springs are provided between the clamps.

5. A semi-automatic telescopic screwdriver according to claim 1, characterized in that, The centralized control system includes a centralized control sleeve corresponding to the arm and a centralized control plate corresponding to the hand. The centralized control sleeve and the centralized control plate are connected by a dustproof pleat. A triggering device is provided inside the dustproof pleat. The screwdriver housing is installed on the centralized control sleeve.

6. A semi-automatic telescopic screwdriver according to claim 5, characterized in that, A storage battery is installed inside the central control sleeve.

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