Handheld automatic screw driving machine

Abstract

The utility model belongs to the processing and manufacturing industry, and particularly relates to a handheld automatic screwing machine which comprises a handle body, a screwdriver bit, a motor module and a screwdriver knob adjusting sleeve. The screwdriver further comprises a fixed seat arranged on the screwdriver bit adjusting sleeve, an extension arm which is arranged on the fixed seat and extends downwards, and an inductive head arranged at the lower end of the extension arm. The extension arm is provided with a mounting groove for mounting the inductive head, the upper end of the extension arm is provided with a wiring groove which extends downwards and is directly communicated with the mounting groove, the extension arm is provided with a convex arch part corresponding to a handheld part of the screwdriver adjusting sleeve, and a gap is formed between the convex arch part and the handheld part; the upper end of the screwdriver head is provided with a sensing block corresponding to the sensing head; through mutual cooperation of the sensing head and the sensing block, a rotation turn number signal of the screwdriver bit can be provided for a control system, feedback control is achieved, and the screwdriver is convenient to use, practical, simple in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of processing and manufacturing industry, and particularly relates to a handheld automatic screw driver. Background Art

[0002] A screw is a tool that uses the physical and mathematical principles of the circular rotation of an object's inclined plane and friction to gradually fasten the parts of a utensil. A screw is a general term for fasteners and is an everyday colloquialism. Screws are indispensable industrial necessities in daily life: such as extremely small screws used in cameras, glasses, watches, electronics, etc.; general screws for televisions, electrical products, musical instruments, furniture, etc.; for engineering, construction, and bridges, large screws and nuts are used; for transportation equipment, airplanes, trams, cars, etc., both large and small screws are used.

[0003] In the manufacturing industry, the application of screw assembly on production lines is very extensive. The assembly of screws has become an essential process in a flow-type assembly production line. In the actual operation process, although a handheld screw driver can quickly tighten the screws, there are still problems such as too many or too few rotation circles. In most cases, operators generally cannot detect it in time, which may lead to the screws not being tightened. Moreover, the number of locking circles of the screws cannot be fed back to the control system, which may also cause situations such as screw slipping or jamming and other tightening failures without being known. Therefore, in order to avoid such situations and facilitate the control system of the screw driver to obtain the number of locking circles of the screws in time, we specifically propose a handheld screw driver. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a handheld automatic screw driver for the deficiencies of the prior art, which can well solve the above problems.

[0005] To achieve the above requirements, the technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] Provide a handheld automatic screw driver, including a handle body, a screw bit coaxially arranged at the lower end of the handle body, a motor module arranged in the handle body for driving the screw bit to rotate, and a screw bit torsion adjustment sleeve coaxially and rotatably arranged at the lower end of the handle body; further including a fixed seat arranged on the screw bit adjustment sleeve, an extension arm extending downwardly from the fixed seat, and a sensing head arranged at the lower end of the extension arm; an installation groove for installing the sensing head is arranged on the extension arm, a wire groove extending downwardly and directly communicating with the installation groove is arranged at the upper end of the extension arm, a convex arch part is arranged on the extension arm corresponding to the handheld part of the screw bit torsion adjustment sleeve, and there is a gap between the convex arch part and the handheld part; a sensing block is arranged at the upper end of the screw bit corresponding to the sensing head.

[0007] For the hand-held automatic screwdriver of the present utility model, a lower end of the extension arm is provided with an extension portion parallel to the screwdriver bit. A lower end of the installation groove penetrates a lower end surface of the extension portion. When the installation is in place, a lower end of the induction head is flush with the lower end surface of the extension portion.

[0008] For the hand-held automatic screwdriver of the present utility model, the extension portion is located below the screwdriver bit torsion adjusting sleeve.

[0009] For the hand-held automatic screwdriver of the present utility model, an annular convex edge is coaxially arranged around the screwdriver bit torsion on a lower end surface of the screwdriver bit torsion adjusting sleeve. When the assembly is in place, the extension portion is parallelly abutted against an outer side wall of the annular convex edge.

[0010] For the hand-held automatic screwdriver of the present utility model, the fixed seat is in a C shape, and the extension arm is integrally connected with the fixed seat.

[0011] For the hand-held automatic screwdriver of the present utility model, the extension arm is located at an end of the fixed seat away from its opening.

[0012] For the hand-held automatic screwdriver of the present utility model, an upper end of the screwdriver bit adjusting sleeve is provided with an annular groove, and the fixed seat is coaxially sleeved on a bottom surface of the annular groove.

[0013] The beneficial effects of the present utility model are as follows: Through the mutual cooperation of the induction head and the induction block, a signal of the number of rotation circles of the screwdriver bit can be provided for the control system to achieve feedback control, which is convenient and practical, has a simple structure and low cost. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will further illustrate the present utility model in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts:

[0015] Figure 1 is a bird's-eye view of the hand-held automatic screwdriver of the present utility model.

[0016] Figure 2 is a bottom view of the hand-held automatic screwdriver of the present utility model. Detailed Embodiments

[0017] The terms "first", "second", "third", "fourth", etc. in the description, claims and drawings of the present invention are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0018] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0019] "Plurality" means two or more. "And / or" describes the associated relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0020] Moreover, the terms indicating directions such as "up", "down", "left", "right", "upper end", "lower end", "longitudinal", etc. are all referenced based on the attitude position of the device or equipment described in this solution during normal use.

[0021] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] The hand-held automatic screw driving machine of the preferred embodiment of the present utility model, such as Figure 1-2As shown, it includes a handle body 10, a screwdriver head 20 coaxially arranged at the lower end of the handle body 10, a motor module (not shown) arranged in the handle body 10 for driving the screwdriver head 20 to rotate, and a screwdriver torque adjustment sleeve 30 coaxially arranged at the lower end of the handle body 10; further, it also includes a fixing seat 40 arranged on the screwdriver head 20 adjustment sleeve, and an extension arm 50 arranged on the fixing seat 40 and extending downward, and a sensor head 60 arranged at the lower end of the extension arm 50; the extension arm 50 is provided with a mounting groove 51 for mounting the sensor head 60, and the upper end of the extension arm 50 is provided with a wiring groove 52 extending downward and directly connected to the mounting groove 51, and the extension arm 50 is provided with a wiring groove 52 extending downward and directly connected to the mounting groove 51. The arm 50 is provided with a convex arch portion 53 corresponding to the hand-held portion of the screwdriver adjustment sleeve 30, and a gap 70 is provided between the convex arch portion 53 and the hand-held portion to prevent the extension arm 50 from being touched when the screwdriver adjustment sleeve 30 is manually tightened; the upper end of the screwdriver head 20 is provided with a sensing block 80 corresponding to the sensing head 60, and the sensing head 60 can be a distance sensor such as an ultrasonic distance sensor and an infrared distance sensor; through the mutual cooperation between the sensing head 60 and the sensing block 80, each time the sensing block 80 rotates one circle, the sensing head 60 is triggered once, and then the control system can be provided with a signal of the number of rotations of the screwdriver head 20, thereby realizing feedback control, which is convenient and practical, simple in structure and low in cost.

[0023] In this embodiment, an extension portion 54 parallel to the screwdriver head 20 is provided at the lower end of the extension arm 50, and the lower end of the mounting groove 51 passes through the lower end surface of the extension portion 54. When installed in place, the lower end of the sensing head 60 is flush with the lower end surface of the extension portion 54 to avoid the lower end of the extension portion 54 affecting the sensing effect of the sensing head 60. The extension portion 54 is located below the screwdriver adjustment sleeve 30 so that the sensing head 60 is sufficiently close to the sensing block 80, thereby reducing the rotation radius of the sensing block 80.

[0024] In this embodiment, an annular ridge 31 is coaxially provided on the lower end surface of the screwdriver torque adjustment sleeve 30 around the screwdriver torque. When assembled in place, the extension portion 54 is parallel to the outer wall of the annular ridge 31 to play a positioning role, thereby preventing the lower end of the extension arm 50 from shaking and affecting the normal detection of the sensor head 60.

[0025] In this embodiment, the fixing seat 40 is C-shaped, and the extension arm 50 is integrally connected to the fixing seat 40. The C-shaped structure of the fixing seat 40 shell is convenient for disassembly and installation, and the extension arm 50 is located at the end of the fixing seat 40 away from its opening 41 to ensure that the length of the fixing seat 40 on both sides of the extension arm 50 is consistent, so that the force is more balanced after fixation.

[0026] In this embodiment, an annular groove 90 is provided at the upper end of the adjusting sleeve of the screwdriver head 20 , and the fixing seat 40 is coaxially sleeved on the bottom surface of the annular groove 90 to prevent the fixing seat 40 from falling off.

[0027] It should be understood that those of ordinary skill in the art can make improvements or modifications based on the above description, and all such improvements and modifications shall fall within the protection scope of the appended claims of this utility model.

Claims

1. A handheld automatic screwdriver, comprising a handle body, a screwdriver bit coaxially arranged at the lower end of the handle body, a motor module arranged in the handle body for driving the screwdriver bit to rotate, and a screw torque adjusting sleeve coaxially and rotatably arranged at the lower end of the handle body; characterized in that, It further includes a fixing seat provided on the screwdriver bit adjusting sleeve, an extension arm provided on the fixing seat and extending downward, and a sensing head provided at the lower end of the extension arm; an installation groove for installing the sensing head is provided on the extension arm, a wire groove extending downward and directly communicating with the installation groove is provided at the upper end of the extension arm, a convex arch portion is provided on the extension arm corresponding to the hand-held portion of the screwdriver torque adjusting sleeve, and a gap is provided between the convex arch portion and the hand-held portion; a sensing block is provided at the upper end of the screwdriver bit corresponding to the sensing head.

2. The hand-held automatic screw driving machine according to claim 1, wherein The lower end of the extension arm is provided with an extension portion parallel to the screwdriver bit, the lower end of the installation groove penetrates the lower end surface of the extension portion, and when the installation is in place, the lower end of the sensing head is flush with the lower end surface of the extension portion.

3. The handheld automatic screw driving machine according to claim 2, wherein The extension portion is located below the screwdriver torque adjusting sleeve.

4. The hand-held automatic screw driving machine according to claim 3, characterized in that, An annular convex edge is coaxially provided around the screwdriver torque on the lower end surface of the screwdriver torque adjusting sleeve. When the assembly is in place, the extension portion is parallelly abutted against the outer side wall of the annular convex edge.

5. The handheld automatic screw driver according to claim 1, characterized in that, The fixing seat is in a C shape, and the extension arm is integrally connected to the fixing seat.

6. The hand-held automatic screw driving machine according to claim 5, wherein The extension arm is located at one end of the fixing seat away from its opening.

7. The handheld automatic screw driver according to claim 6, characterized in that, An annular groove is provided at the upper end of the screwdriver bit adjusting sleeve, and the fixing seat is coaxially sleeved on the bottom surface of the annular groove.

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