A screw disassembly and assembly auxiliary device for electric screwdriver

By designing an auxiliary device for disassembling and installing screws for the electric screwdriver, the spring and drum structure are used to automatically clamp and store the bolts, which solves the problem of inconvenient operation of traditional tools and improves the efficiency and safety of screw disassembly and installation.

CN118927190BActive Publication Date: 2025-09-19NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Application Number
CN202411059479.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-08-04
Publication Date
2025-09-19
Estimated Expiration
2044-08-04

AI Technical Summary

Technical Problem

Traditional screw removal tools require two-handed operation, making high-position operations difficult. Screws are prone to slipping during disassembly and assembly, and lack convenient removal and storage functions.

Method used

A screw disassembly and assembly auxiliary device for an electric screwdriver is designed, which includes an outer sleeve, an inner sleeve, a clamping part, a fixing plate, a ring sleeve and a storage component. The spring and rotating cylinder structure are used to realize automatic clamping, rotation and storage of bolts. Combined with the screw function of the electric screwdriver, the bolts can be quickly disassembled, assembled and collected.

Benefits of technology

It realizes the rapid disassembly, assembly and storage of bolts, reduces the frequency of manual operation, improves work efficiency, avoids screws from slipping, and reduces the fatigue of maintenance personnel.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a screw disassembling and installing auxiliary device for an electric screwdriver, comprising an outer sleeve and an inner sleeve, wherein a clamping portion for clamping the front end of the electric screwdriver is fixed at one end, a fixing disk with a hollow middle portion is fixed at the front end of the outer sleeve, a through rod is coaxially fixed to the front end of the fixing disk, a channel is provided on the fixing disk, a ring sleeve is detachably mounted on the outer side of the fixing disk, and an inlet and outlet hole is provided on the side wall of the ring sleeve. The present invention rotates the receiving sleeve so that the pressure plate presses the corresponding bolt into the channel, and the electric screwdriver works, and the screw rod of the electric screwdriver extends forward, pushing the bolt in the channel into the through rod, and finally the screw rod of the electric screwdriver pushes the bolt out of the through rod and screws it into the hole. Through the continuous rotation of the receiving sleeve, the storage bin containing the bolts is aligned with the inlet and outlet holes in turn, so that the bolts can be quickly added to the channel, the operation of frequently taking out the bolts is eliminated, and the operation of installing the bolts is improved.
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Description

Technical Field

[0001] The invention relates to the technical field of screw disassembly and assembly, and in particular to a screw disassembly and assembly auxiliary device for an electric screwdriver. Background Art

[0002] Industrial equipment maintenance requires frequent and extensive screw removal and installation. Due to structural and technical issues with traditional screw removal tools, maintenance personnel must use both hands: one hand to support the screw and the other to hold the tool. This is especially true when working at high altitudes, where hole alignment is difficult, and the two-handed working posture can exacerbate maintenance personnel fatigue. Furthermore, the frequent handling and storage of screws during the removal and installation process can easily lead to screw slippage.

[0003] Most screw removal and installation tools currently sold on the market only have basic removal and installation functions, but few tools can conveniently take and store screws while removing and installing screws. Therefore, a screw removal and installation auxiliary device for an electric screwdriver is proposed. Summary of the Invention

[0004] The object of the present invention is to provide a screw disassembly and assembly auxiliary device for an electric screwdriver to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a screw disassembly and assembly auxiliary device for an electric screwdriver, fixed to the front end of the electric screwdriver, comprising an outer sleeve and an inner sleeve, wherein the inner sleeve is axially displaced inside the outer sleeve by a first spring, the first spring being arranged at the lower end of the inner sleeve, and when the inner sleeve slides downward, the inner sleeve compresses and deforms the first spring, so that the first spring has an elastic force to press the inner sleeve upward, and a clamping portion for clamping the front end of the electric screwdriver is fixed to one end of the inner sleeve, a hollow fixing disk is fixed to the front end of the outer sleeve, and a passing rod capable of passing a bolt is coaxially fixed to the front end of the fixing disk;

[0006] The fixed disk is provided with a channel, the cross section of the channel is U-shaped, the inner end of the channel is connected to the hollow part in the middle of the fixed disk, and a ring sleeve is detachably installed on the outer side of the fixed disk. The side wall of the ring sleeve is provided with an inlet and outlet hole connected to the channel and used to introduce bolts into the channel or guide the bolts out of the channel.

[0007] Preferably, a lock column is fixed on the side wall of the ring sleeve, a lock hole for the lock column to be inserted is provided on the side wall of the fixed disk, a lock block is slidably connected to the inside of the fixed disk through a fourth spring, and a lock groove for the lock block to be engaged is provided on the side wall of the lock column.

[0008] Preferably, a receiving assembly for placing bolts is provided on the ring sleeve, and the receiving assembly includes a receiving sleeve, which is rotatably sleeved on the ring sleeve, and a plurality of receiving compartments are distributed in a ring shape inside the receiving sleeve. When the receiving sleeve is rotated, the plurality of receiving compartments are alternately connected to the channel through the inlet and outlet holes;

[0009] The interior of each receiving bin is slidably connected to a pressure plate for pressing the bolt toward the center of the ring sleeve through a second spring. When the receiving bin is rotated to be connected to the channel, the pressure plate presses the bolt into the interior of the channel.

[0010] Preferably, the outer sleeve is a double-sleeve structure and forms a sandwich, the inner sleeve slides in the middle of the outer sleeve, a rotating drum rotates inside the sandwich, the rotating drum is connected to the storage sleeve, vertical grooves are opened on the inner wall of the rotating drum in the form of a circumferential array, an oblique groove is provided between two adjacent vertical grooves, and the two ends of the oblique groove are respectively connected to the upper and lower ends of the two vertical grooves to form a wave-shaped structure connected at the end, a sliding column is fixed on the side wall of the inner sleeve, and the end of the sliding column away from the inner sleeve is slidably connected to the vertical groove and the oblique groove;

[0011] When the inner sleeve slides downward, the sliding post slides along the vertical slot;

[0012] When the inner sleeve slides upward, the sliding post slides along the inclined groove;

[0013] The interior of the sliding column is slidably connected to a telescopic head via a third spring, and the end of the telescopic head slides on the bottom of the vertical slot and the oblique slot; the bottom of the vertical slot and the bottom of the oblique slot are both inclined, and the bottom of the lower end of the vertical slot is higher than the bottom of the lower end of the oblique slot in the form of a cliff, and the bottom of the lower end of the vertical slot is lower than the bottom of the lower end of the oblique slot in the form of a cliff.

[0014] Preferably, a plug-in post is fixed to the upper end of the storage sleeve, and a socket for the plug-in post is provided on the side wall of the rotating drum. When the ring sleeve is fixed on the fixed disk, the plug-in post is plugged into the inside of the socket. Through the cooperation of the plug-in post and the socket, the rotation of the rotating drum can drive the rotation of the storage sleeve.

[0015] Preferably, a blocking member is fixed to the middle part of the lower end face of the outer sleeve, and the blocking member includes a fixing ring, which is composed of two ring disks spliced ​​together. The interior of the fixing ring is symmetrically and slidingly connected with two blocks for blocking the inner hole of the fixing ring through a fifth spring, and the upper end connection of the two blocks is provided with a support wall for being supported by the screw of an electric screwdriver.

[0016] Preferably, the storage assembly includes a storage bag, the storage bag is fixed on the ring sleeve, and the mouth of the storage bag is aligned and connected with the inlet and outlet holes.

[0017] Preferably, the clamping part includes a sleeve and a locking screw. The sleeve is fixed to one end of the inner sleeve. An opening is provided on one side of the sleeve, and the locking bolt engages with the opening. The size of the opening is controlled by rotating the locking screw. Even if the size of the inner cavity of the sleeve changes after deformation, the sleeve can clamp the front end of the electric screwdriver.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention clamps the bolts between the pressure plate and the ring sleeve by the elastic pressure of the second spring, so that each storage bin is placed with a bolt, and the storage sleeve is rotated, and a storage bin equipped with a bolt is aligned with the inlet and outlet holes, and the pressure plate presses the corresponding bolt into the channel, and then the electric screwdriver works, and the screw rod of the electric screwdriver extends forward, pushing the bolt in the channel into the through rod, and finally the screw rod of the electric screwdriver pushes the bolt out of the through rod and screws it into the hole. Through the continuous rotation of the storage sleeve, the storage bins equipped with bolts are aligned with the inlet and outlet holes in turn, so that the bolts can be quickly added to the channel, eliminating the operation of frequently taking out the bolts and improving the operation of installing the bolts.

[0020] 2. The present invention uses the magnetic attraction of the screw of the electric screwdriver on the bolt. When the bolt of the electric screwdriver is reset upward, the screw of the electric bolt driver pulls the bolt from the through rod into the interior of the channel. At this time, the opening of the channel is placed downward, that is, the storage bag is located below the ring sleeve, and the bolt will automatically fall into the storage bag from the channel, thereby realizing the collection of the bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is an exploded view of the overall structure of the present invention;

[0023] Figure 3 This is an exploded view of the fixing plate, annular sleeve, receiving sleeve and rotating drum of the present invention;

[0024] Figure 4 It is a cross-sectional view of the outer sleeve, inner sleeve and rotating drum of the present invention;

[0025] Figure 5 It is a cross-sectional exploded view of the outer sleeve, inner sleeve and rotating drum of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the rotating drum of the present invention;

[0027] Figure 7 Schematic diagram of the expansion of the drum of the present invention;

[0028] Figure 8 An exploded view of the fixing ring, the fifth spring and the stopper of the present invention;

[0029] Figure 9 This is an exploded view of the fixing plate, the through rod, the ring sleeve and the receiving sleeve of the present invention;

[0030] Figure 10 This is a structural diagram of the fixing plate, the through rod and the ring sleeve of the present invention;

[0031] Figure 11 A cross-sectional view of the fixing plate, the rod and the ring sleeve of the present invention;

[0032] Figure 12 This is an exploded view of the receiving sleeve, the second spring and the pressure plate of the present invention;

[0033] Figure 13 Exploded view I of the fixing plate, the ring sleeve and the storage bag of the present invention;

[0034] Figure 14 FIG2 is an exploded view II of the fixing plate, the ring sleeve and the storage bag of the present invention.

[0035] In the figure: 1. outer sleeve, 2. inner sleeve, 3. clamping part, 301. jacket, 302. locking screw, 4. fixed disk, 401. channel, 5. through rod, 6. ring sleeve, 601. inlet and outlet hole, 7. first spring, 8. storage sleeve, 801. storage bin, 9. second spring, 10. pressure plate, 11. rotating cylinder, 1101. vertical groove, 1102. oblique groove, 12. sliding column, 13. third spring, 14. telescopic head, 15. locking column, 1501. locking groove, 16. locking hole, 17. fourth spring, 18. locking block, 19. plug-in column, 20. socket, 21. blocking member, 2101. fixing ring, 2102. fifth spring, 2103. block, 2104. support wall, 22. storage bag. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0037] See also Figure 1-14 The present invention provides a technical solution: a screw disassembly and assembly auxiliary device for an electric screwdriver, fixed to the front end of the electric screwdriver, comprising an outer sleeve 1 and an inner sleeve 2, wherein the inner sleeve 2 is axially displaced inside the outer sleeve 1 by a first spring 7, such as Figure 2 、 4As shown in Figure 5, the first spring 7 is arranged at the lower end of the inner sleeve 2. When the inner sleeve 2 slides downward, the inner sleeve 2 compresses and deforms the first spring 7, so that the first spring 7 has an elastic force to press the inner sleeve 2 upward. A clamping portion 3 for clamping the front end of an electric screwdriver is fixed to one end of the inner sleeve 2. A hollow fixing disk 4 is fixed to the front end of the outer sleeve 1. A passing rod 5 for allowing a bolt to pass through is coaxially fixed to the front end of the fixing disk 4.

[0038] The fixing plate 4 is provided with a channel 401, the cross section of the channel 401 (the cross section is a plane perpendicular to the axis of the fixing plate 4) is U-shaped, the inner end of the channel 401 is connected to the hollow portion in the middle of the fixing plate 4, and a ring sleeve 6 is detachably mounted on the outer side of the fixing plate 4. The side wall of the ring sleeve 6 is provided with an inlet and outlet hole 601 that is connected to the channel 401 and is used to introduce bolts into the channel 401 or to remove bolts from the channel 401.

[0039] like Figure 3 、 11 As shown, in order to fix the ring sleeve 6 on the fixed disk 4, specifically, a lock column 15 is fixed on the side wall of the ring sleeve 6, and a lock hole 16 for the lock column 15 to be inserted is opened on the side wall of the fixed disk 4. A lock block 18 is slidably connected to the interior of the fixed disk 4 through a fourth spring 17, and a lock groove 1501 for the lock block 18 to be engaged is opened on the side wall of the lock column 15. Figure 11 As shown, the sliding direction of the locking block 18 is perpendicular to the sliding direction of the locking column 15 inserted into the locking hole 17, and the end of the locking block 18 inserted into the locking groove 1501 is hemispherical. When the ring sleeve 6 can be fixed on the fixed disk 4, the locking block 18 can be disengaged from the locking groove 1501 by pulling the ring sleeve 6 with force, so that the ring sleeve 6 can be removed. Moreover, after the lock column 15 is inserted into the lock hole 16, the ring sleeve 6 can be positioned to ensure that the inlet and outlet holes 601 and the channel 401 are aligned and overlapped.

[0040] Specifically, the clamping part 3 includes a sleeve 301 and a locking screw 302. The sleeve 301 is fixed to one end of the inner sleeve 2. An opening is provided on one side of the sleeve 301, and the locking bolt 302 engages with the opening. The size of the opening is controlled by rotating the locking screw 302. Even if the size of the inner cavity of the sleeve 301 changes after deformation, the sleeve 301 can clamp the front end of the electric screwdriver. Example

[0041] like Figure 1-12As shown, based on the first embodiment, in order to automatically add bolts into the channel 401 in this embodiment so as to quickly complete the bolt installation operation, specifically, the ring sleeve 6 is provided with a storage assembly for placing bolts, and the storage assembly includes a storage sleeve 8, which is rotatably sleeved on the ring sleeve 6. The interior of the storage sleeve 8 is provided with a plurality of storage bins 801 distributed in a ring shape. When the storage sleeve 8 is rotated, the plurality of storage bins 801 are alternately connected to the channel 401 through the inlet and outlet holes 601.

[0042] Each receiving compartment 801 is slidably connected to a pressure plate 10 for pressing the bolt toward the center of the ring sleeve 6 via a second spring 9. When the receiving compartment 801 rotates to communicate with the channel 401, the pressure plate 10 presses the bolt into the channel 401.

[0043] In order to facilitate the installation of the bolts into the storage bin 801, the bottom of the storage bin 801 is open, and the lower end of the pressure plate 10 is inclined toward the side away from the axis of the storage sleeve 8. When the bolts are placed into the storage bin 801, the bolts are pressed between the pressure plate 10 and the ring sleeve 6 from the bottom of the storage bin 801. At this time, the bolts press the pressure plate 10, causing the pressure plate 10 to compress the second spring 9 and slide. The bolts are clamped between the pressure plate 1 and the ring sleeve 6 by the elastic pressure of the second spring 9.

[0044] After a bolt is placed in each storage bin 801, the ring sleeve 6 and the storage sleeve 8 are installed on the fixed disk 4. After installation, the ring sleeve 6 and the fixed disk 4 are relatively fixed, and the inlet and outlet holes 601 are connected to the channel 401 (a storage bin 801 is reserved without a bolt. During installation, the storage bin 801 is aligned with the inlet and outlet holes 601 to prevent the bolt from accidentally entering the channel 401 during installation). The storage sleeve 8 can rotate relative to the ring sleeve 6 and the fixed disk 4. After rotating the storage sleeve 8, A storage bin 801 containing bolts is aligned with the inlet and outlet holes 601, and the pressing plate 10 presses the corresponding bolts into the channel 401. Then the electric screwdriver works, and the screw rod of the electric screwdriver extends forward, pushing the bolts in the channel 401 into the through rod 5. Finally, the screw rod of the electric screwdriver pushes the bolts out of the through rod 5 and screws them into the holes. Through the continuous rotation of the storage sleeve 8, the storage bins 801 containing bolts are aligned with the inlet and outlet holes 601 in turn, so that the bolts can be quickly added to the channel 401.

[0045] In addition, a bolt positioning piece is provided at the front end of the through rod 5, that is, after the bolt is pushed to the front end of the through rod 5 by the screw rod of the electric screwdriver, the positioning piece can position the bolt, that is, the threaded end of the bolt extends out, and the head of the bolt is clamped by the clamping block of the positioning piece. At this time, the threaded end of the bolt is aligned with the hole, and the screw rod of the electric screwdriver is pressed hard again, and the clamping block of the positioning piece opens to both sides, thereby allowing the bolt to pass through, completing the installation of the bolt.

[0046] like Figure 3-7 As shown, in the sliding process of the inner sleeve 2, in order to automatically drive the storage sleeve 8 to rotate, specifically, the outer sleeve 1 is a double-sleeve structure and forms a sandwich, the inner sleeve 2 slides in the middle of the outer sleeve 1, and a rotating cylinder 11 is rotated inside the sandwich, and the rotating cylinder 11 is connected to the storage sleeve 8. Vertical grooves 1101 are opened on the inner wall of the rotating cylinder 11 in the form of a circumferential array, and an inclined groove 1102 is provided between two adjacent vertical grooves 1101, and the two ends of the inclined groove 1102 are respectively connected to the upper and lower ends of the two vertical grooves 1101 to form a wave-shaped structure connected to the end. A sliding column 12 is fixed on the side wall of the inner sleeve 2, and the end of the sliding column 12 away from the inner sleeve 2 is slidably connected to the vertical groove 1101 and the inclined groove 1102;

[0047] When the inner sleeve 2 slides downward, the sliding post 12 slides along the vertical slot 1101. At this time, during the downward sliding process of the inner sleeve 2, the sliding post 12 will not drive the rotating drum 11 to rotate.

[0048] When the inner sleeve 2 slides upward, the sliding post 12 slides along the inclined groove 1102. At this time, during the upward sliding process of the inner sleeve 2, the sliding post 12 cooperates with the inclined groove 1102 to drive the rotating drum 11 to rotate. At this time, the rotating drum 11 automatically rotates with the storage sleeve 8, so that the other storage bin 801 rotates to a state aligned with the inlet and outlet hole 601.

[0049] Among them, the interior of the sliding column 12 is slidably connected to a telescopic head 14 through a third spring 13, and the end of the telescopic head 14 slides on the bottom of the vertical groove 1101 and the inclined groove 1102; the bottom of the vertical groove 1101 and the bottom of the inclined groove 1102 are both inclined, and the bottom of the lower end of the vertical groove 1101 is higher than the bottom of the lower end of the inclined groove 1102 in the form of a cliff, and the bottom of the lower end of the vertical groove 1101 is lower than the bottom of the lower end of the inclined groove 1102 in the form of a cliff.

[0050] The form of the cliff is as follows: a step is provided at the upper and lower ends of the vertical trough 1101 and the inclined trough 1102;

[0051] When the sliding column 12 slides from top to bottom along the vertical groove 1101 (as Figure 7 As shown, it slides in the direction of the solid arrow). Due to the inclined arrangement of the bottom of the vertical slot 1101, the telescopic head 14 slides on the bottom of the vertical slot 1101 and is continuously pressed into the sliding column 12 by the bottom of the vertical slot 1101, that is, the third spring 13 is continuously compressed. When the sliding column 12 slides to the stepped position at the lower end of the vertical slot 1101, the telescopic head 14 is ejected by the third spring 13. At this time, under the cooperation of the telescopic head 14 and the stepped arrangement, when the sliding column 12 slides upward, the sliding column 12 slides along the inclined slot 1102 (as shown in FIG. Figure 7As shown, it slides in the direction of the hollow arrow), since the sliding column 12 slides axially relative to the outer sleeve 1 when sliding upward, the rotating drum 11 and the storage sleeve 8 will rotate circumferentially relative to the outer sleeve 1. After the sliding column 12 slides to the upper end of the inclined groove 1102, the sliding column 12 will be limited to the upper end of the next vertical groove 1101 by using the telescopic head 14 and the step at the upper end of the inclined groove 1102. When the inner sleeve 2 slides downward again, the sliding column 12 will slide downward in another vertical groove 1101, and the sliding of the inner sleeve 2 will be repeated in sequence to automatically drive the rotation of the storage sleeve 8.

[0052] like Figure 3 As shown, when the ring sleeve 6 is fixed on the fixed disk 4, in order to enable the storage sleeve 8 to be connected to the rotating drum 11, so that the storage sleeve 8 and the rotating drum 11 keep rotating synchronously, specifically, a plug-in column 19 is fixed to the upper end of the storage sleeve 8, and a socket 20 for the plug-in column 19 to be plugged into the side wall of the rotating drum 11 is provided. When the ring sleeve 6 is fixed on the fixed disk 4, the plug-in column 19 is plugged into the inside of the socket 20. Through the cooperation of the plug-in column 19 and the socket 20, the rotation of the rotating drum 11 can bring about the rotation of the storage sleeve 8.

[0053] like Figure 2-5 As shown in Figures 8 and 11, in order to prevent the bolt in the channel 401 from sliding into the outer sleeve 1, specifically, a blocking member 21 is fixed to the middle of the lower end surface of the outer sleeve 1, and the blocking member 21 includes a fixing ring 2101, which is composed of two ring disks. The interior of the fixing ring 2101 is symmetrically slidably connected to two blocks 2103 for blocking the inner hole of the fixing ring 2101 through a fifth spring 2102. The upper end connection of the two blocks 2103 is provided with a support wall 2104 for supporting the screw of the electric screwdriver. When the screw of the electric screwdriver moves downward When the screw of the electric screwdriver slides upward and is pulled out from the inner hole of the fixing ring 2101, the fifth spring 2102 presses the two blocks 2103, causing the two blocks 2103 to block the inner hole of the fixing ring 2101 again, effectively preventing the bolt in the channel 401 from entering the outer sleeve 1. Example

[0054] like Figure 13 、 Figure 14As shown, based on the first embodiment, in order to collect the bolts unscrewed by the electric screwdriver, the present embodiment specifically includes a storage assembly including a storage bag 22, which is fixed on the ring sleeve 6, and the mouth of the storage bag 22 is aligned and connected with the inlet and outlet holes 601. After the ring sleeve 6 is fixed on the fixed disk 4, the mouth of the storage bag 22 is connected with the channel 401 through the inlet and outlet holes 601. When the screw of the electric screwdriver passes through the through rod 5 to remove the bolt, the magnetic attraction of the screw of the electric screwdriver on the bolt is utilized. When the bolt of the electric screwdriver is reset upward, the screw of the electric bolt driver pulls the bolt from the through rod 5 into the interior of the channel 401. At this time, the opening of the channel 401 is placed downward, that is, the storage bag 22 is located below the ring sleeve 6, and the bolt will automatically fall into the storage bag 22 from the channel 401, thereby realizing the collection of the bolts.

[0055] According to the description of the second embodiment and the third embodiment, two ring sleeves 6 need to be configured, one ring sleeve 6 is provided with a storage sleeve 8, and the other ring sleeve 6 is provided with a storage bag 22. When the bolts need to be installed, the ring sleeve 6 provided with the storage sleeve 8 is installed on the fixed plate 4 to improve the convenience of installing the bolts, and the ring sleeve 6 provided with the storage bag 22 is installed on the fixed plate 4 to improve the convenience of disassembling the bolts.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A screw disassembly and assembly auxiliary device for an electric screwdriver, fixed to the front end of the electric screwdriver, comprising an outer sleeve (1) and an inner sleeve (2), characterized in that: The inner sleeve (2) is axially displaced inside the outer sleeve (1) by a first spring (7), and a clamping portion (3) for clamping the front end of an electric screwdriver is fixed to one end of the inner sleeve (2), a hollow fixed disk (4) is fixed to the front end of the outer sleeve (1), and a passing rod (5) capable of allowing a bolt to pass through is coaxially fixed to the front end of the fixed disk (4); The fixing plate (4) is provided with a channel (401), a ring sleeve (6) is detachably mounted on the outer side of the fixing plate (4), an inlet and outlet hole (601) is provided on the side wall of the ring sleeve (6) and is connected to the channel (401) and is used to introduce a bolt into the channel (401) or to guide the bolt in the channel (401) out, a lock column (15) is fixed on the side wall of the ring sleeve (6), a lock hole (16) for inserting the lock column (15) is provided on the side wall of the fixing plate (4), and the interior of the fixing plate (4) is connected to the fourth spring (1 7) A locking block (18) is slidably connected, a locking groove (1501) for the locking block (18) to be engaged is provided on the side wall of the locking column (15), a storage assembly for placing bolts is provided on the ring sleeve (6), and the storage assembly includes a storage sleeve (8), the storage sleeve (8) is rotatably sleeved on the ring sleeve (6), and the interior of the storage sleeve (8) is provided with a plurality of storage bins (801) distributed in a ring shape. When the storage sleeve (8) is rotated, the plurality of storage bins (801) are alternately connected to the channel (401) through the inlet and outlet holes (601); The interior of each receiving bin (801) is slidably connected to a pressure plate (10) for pressing the bolt toward the center of the ring sleeve (6) via a second spring (9). When the receiving bin (801) is rotated to communicate with the channel (401), the pressure plate (10) presses the bolt into the interior of the channel (401).

2. The screw disassembly and installation auxiliary device for an electric screwdriver according to claim 1, characterized in that: The outer sleeve (1) is a double-sleeve structure and forms an interlayer. The inner sleeve (2) slides in the middle of the outer sleeve (1). A rotating drum (11) rotates inside the interlayer. The rotating drum (11) is connected to the storage sleeve (8). Vertical grooves (1101) are provided on the inner wall of the rotating drum (11) in the form of a circumferential array. An inclined groove (1102) is provided between two adjacent vertical grooves (1101), and the two ends of the inclined groove (1102) are respectively connected to the upper and lower ends of the two vertical grooves (1101) to form a wave-shaped structure with the tails connected. A sliding column (12) is fixed on the side wall of the inner sleeve (2). The end of the sliding column (12) away from the inner sleeve (2) is slidably connected to the vertical groove (1101) and the inclined groove (1102); When the inner sleeve (2) slides downward, the sliding post (12) slides along the vertical groove (1101); When the inner sleeve (2) slides upward, the sliding post (12) slides along the inclined groove (1102); The interior of the sliding column (12) is slidably connected to a telescopic head (14) via a third spring (13), and the end of the telescopic head (14) slides on the bottoms of the vertical groove (1101) and the inclined groove (1102); the bottoms of the vertical groove (1101) and the inclined groove (1102) are both inclined, and the bottom of the lower end of the vertical groove (1101) is higher than the bottom of the lower end of the inclined groove (1102) in the form of a cliff, and the bottom of the lower end of the vertical groove (1101) is lower than the bottom of the lower end of the inclined groove (1102) in the form of a cliff.

3. The screw disassembly and installation auxiliary device for an electric screwdriver according to claim 2, characterized in that: A plug-in column (19) is fixed to the upper end of the storage sleeve (8), and a socket (20) for plugging the plug-in column (19) is provided on the side wall of the rotating drum (11).

4. The screw disassembly and installation auxiliary device for an electric screwdriver according to claim 1, characterized in that: A blocking member (21) is fixed to the middle of the lower end surface of the outer sleeve (1), and the blocking member (21) includes a fixing ring (2101). The interior of the fixing ring (2101) is symmetrically slidably connected to two blocking blocks (2103) for blocking the inner hole of the fixing ring (2101) via a fifth spring (2102). The upper end connection of the two blocking blocks (2103) is provided with a support wall (2104) for supporting the screw of an electric screwdriver.

5. The screw disassembly and installation auxiliary device for an electric screwdriver according to claim 1, characterized in that: The storage assembly comprises a storage bag (22), the storage bag (22) is fixed on the ring sleeve (6), and the mouth of the storage bag (22) is aligned and connected with the inlet and outlet hole (601).

6. The screw disassembly and installation auxiliary device for an electric screwdriver according to claim 1, characterized in that: The clamping portion (3) comprises a sleeve (301) and a locking screw (302), wherein the sleeve (301) is fixed to one end of the inner sleeve (2), an opening is provided on one side of the sleeve (301), and the locking screw (302) is engaged with the opening.

Citation Information

Patent Citations

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