Electric screwdriver suitable for bottom assembly

Abstract

The utility model discloses an electric screw driver suitable for bottom assembly, which comprises a shell and a driving mechanism, the middle of the upper end of the shell is rotatably connected with a transmission shaft, the upper end of the shell is inserted with adapters through limiting blocks, and the driving mechanism comprises a bevel gear I, a bit groove I, a bevel gear II and a bit groove II. The first bevel gear is rotationally connected to the middle of the lower end of the interior of the adapter, the first bit groove is formed in the upper end of the middle of the interior of the transmission shaft, the lower end of the first bevel gear is inserted into the first bit groove, the second bevel gear is rotationally connected to the middle of the upper end of the interior of the adapter, and the first bevel gear is meshed with the second bevel gear. The electric screw driver suitable for bottom assembly is provided with the adapter capable of being rapidly disassembled and assembled, bolts can be normally fastened when the adapter is not installed, the output direction of power can be changed when the adapter is installed, and assembly work of the bottom of a circuit breaker is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of electric screwdrivers, in particular to an electric screwdriver suitable for bottom assembly. Background Art

[0002] An electric screwdriver, also known as an electric screwdriver or an electric screwdriver, is an electric tool used to tighten and loosen screws. The electric tool is equipped with a mechanism for adjusting and limiting torque and is mainly used in assembly lines. It is one of the essential tools for most manufacturing companies. When producing circuit breakers, an electric screwdriver is needed for assembly work. Existing electric screwdrivers are mostly composed of an electric motor, a reduction gearbox, and a screwdriver bit. The rotation of the motor drives the reducer with a planetary gear set inside to rotate. Through the transmission of the reduction gear, the torque output by the motor becomes larger, and then the screwdriver bit is driven to rotate through the transmission shaft to screw the screw in or out. When a traditional electric screwdriver is used to assemble a circuit breaker, especially when assembling the bottom of the circuit breaker, the circuit breaker cannot be turned over for assembly. The operator needs to squat and hold the electric screwdriver upwards to perform the assembly work at the bottom of the circuit breaker, which is very inconvenient. For this reason, we propose an electric screwdriver suitable for bottom assembly. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an electric screwdriver suitable for bottom assembly. The electric screwdriver is provided with an adapter that can be quickly disassembled and assembled. When the adapter is not installed, the bolts can be tightened normally. When the adapter is installed, the output direction of the power can be changed, which facilitates the assembly work of the bottom of the circuit breaker and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned object, the present utility model provides the following technical solutions: an electric screwdriver suitable for bottom assembly, comprising a housing and a driving mechanism;

[0005] Shell: The middle part of its upper end is rotatably connected to the transmission shaft, and the upper end of the shell is connected to the adapter through the limit block;

[0006] Driving mechanism: It includes bevel gear 1, bit slot 1, bevel gear 2 and bit slot 2. The bevel gear 1 is rotatably connected to the middle of the lower end of the adapter. The bit slot 1 is opened at the middle upper end of the transmission shaft. The lower end of the bevel gear 1 is inserted into the inside of the bit slot 1. The bevel gear 2 is rotatably connected to the middle of the upper end of the adapter. The bevel gear 1 is meshed with the bevel gear 2. The bit slot 2 is opened at the middle of the right end of the bevel gear 2. The output direction of the power can be changed. A quick-disassembly adapter is provided. When the adapter is not installed, the bolts can be tightened normally. When the adapter is installed, the output direction of the power can be changed, which facilitates the assembly work at the bottom of the circuit breaker.

[0007] Furthermore, the driving mechanism also includes a quick-release assembly, which includes an installation slot, a locking column, a button and a spring. The installation slots are respectively opened at the upper ends of the left and right sides of the shell, the locking columns are slidably connected to the inside of the installation slots, and the buttons are arranged at the outer ends of the locking columns. A spring is provided between the end of the button close to the middle of the shell and the inner wall of the installation slot. The springs are all sleeved on the outer surface of the locking column, providing a basis for the installation and disassembly of the adapter.

[0008] Furthermore, the quick-release assembly also includes a locking head and a locking mouth. The locking heads are respectively inserted into the left and right sides of the upper end of the shell, the upper ends of the locking heads are fixedly connected to the lower end of the adapter, and the locking mouths are opened in the middle level of the inner part of the locking head. The middle part of the outer surface of the locking column is installed in cooperation with the inner wall of the locking mouth, which can quickly fix and release the adapter.

[0009] Furthermore, the driving mechanism also includes a gear box, which is arranged at the upper end of the interior of the shell, the upper end of the output shaft of the gear box is fixedly connected to the lower end of the transmission shaft, and a planetary gear set is provided inside the gear box to increase the torque of the electric screwdriver.

[0010] Furthermore, the driving mechanism also includes a motor, which is arranged in the middle of the interior of the shell, the input end of the motor is electrically connected to the output end of the single-chip microcomputer, and the upper end of the output shaft of the motor is fixedly connected to the lower end of the reduction shaft of the gear box, providing stable drive for the electric screwdriver.

[0011] Furthermore, it also includes anti-slip rubber pads, which are respectively arranged at the lower ends of the front and rear sides of the outer surface of the shell. The outer surface of the anti-slip rubber pads is provided with evenly distributed anti-slip strips to facilitate the grip of the electric screwdriver and prevent the electric screwdriver from slipping.

[0012] Furthermore, it also includes a battery and a single-chip microcomputer. The battery is arranged at the lower end of the interior of the shell, and the single-chip microcomputer is arranged in the middle of the right side of the outer surface of the shell. The input end of the single-chip microcomputer is electrically connected to the output end of the battery to provide a control effect for the electric screwdriver.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the electric screwdriver suitable for bottom assembly has the following advantages:

[0014] 1. Press the two buttons inward at the same time, the locking column moves inward, the spring is compressed, pick up the adapter, insert the locking head into the installation slot, and the opening below the locking mouth first passes through the thin rod in the middle of the locking column until the adapter is close to the upper end of the shell. The round opening in the middle of the locking mouth is horizontally adjacent to the locking head. Release the button, and the spring drives the locking column and button back to their original position. The end of the locking column close to the middle of the shell is located in the round opening in the middle of the locking mouth. The adapter is fixed and is equipped with a quick-disassembly adapter.

[0015] 2. The single-chip microcomputer controls the operation of the motor. The output shaft of the motor drives the reduction shaft of the gearbox to rotate. Through the transmission of the planetary gear set, the torque of the motor becomes larger, driving the transmission shaft and bevel gear 1 to rotate synchronously. Bevel gear 2 will also rotate accordingly, driving the screwdriver bit to rotate, so that the power output direction of the electric screwdriver is upward. The assembly work at the bottom of the circuit breaker can be carried out quickly without squatting. The power output direction can be changed, which facilitates the assembly work at the bottom of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the driving mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the quick-release assembly of the utility model;

[0019] Figure 4 This is a schematic diagram of the gearbox structure of the utility model.

[0020] In the figure: 1 housing, 2 transmission shaft, 3 limit block, 4 adapter, 5 drive mechanism, 51 bevel gear 1, 52 bit slot 1, 53 bevel gear 2, 54 bit slot 2, 55 quick release assembly, 551 mounting slot, 552 locking column, 553 button, 554 spring, 555 locking head, 556 locking mouth, 56 gear box, 57 motor, 6 battery, 7 single-chip microcomputer, 8 anti-slip rubber pad. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0022] See also Figure 1-4 , this embodiment provides a technical solution: an electric screwdriver suitable for bottom assembly, comprising a housing 1 and a driving mechanism 5;

[0023] Shell 1: A drive shaft 2 is rotatably connected to the middle of its upper end. The upper ends of the shell 1 are respectively inserted with a swivel joint 4 through a limit block 3. It also includes an anti-slip rubber pad 8. The anti-slip rubber pads 8 are respectively arranged at the lower ends of the front and rear sides of the outer surface of the shell 1. The outer surface of the anti-slip rubber pad 8 is provided with evenly distributed anti-slip strips, which is convenient for holding the electric screwdriver and prevents the electric screwdriver from slipping. It also includes a battery 6 and a single-chip microcomputer 7. The battery 6 is arranged at the lower end inside the shell 1, and the single-chip microcomputer 7 is arranged in the middle of the right side of the outer surface of the shell 1. The input end of the single-chip microcomputer 7 is electrically connected to the output end of the battery 6 to provide control effect for the electric screwdriver;

[0024] Drive mechanism 5: It includes a bevel gear 1-51, a bit slot 1-52, a bevel gear 2-53 and a bit slot 2-54. The bevel gear 1-51 is rotatably connected to the middle of the lower end inside the swivel joint 4. The bit slot 1-52 is opened at the upper middle inside the drive shaft 2. The lower end of the bevel gear 1-51 is inserted into the inside of the bit slot 1-52. The bevel gear 2-53 is rotatably connected to the middle of the upper end inside the swivel joint 4. The bevel gear 1-51 is meshed with the bevel gear 2-53. The bit slot 2-54 is opened at the middle of the right end of the bevel gear 2-53. The bit slot 2-54 is convenient for installing an external bit and can change the output direction of power. The drive mechanism 5 also includes a quick-release component 55. The quick-release component 55 includes an installation slot 551, a locking column 552, a button 553 and a spring 554. The installation slots 551 are respectively opened at the upper ends of the left and right sides inside the shell 1. The locking columns 552 are all slidably connected to the inside of the installation slot 551. The middle part of the locking column 552 is a thin rod. The buttons 553 are all arranged at the outer ends of the locking column 552. A spring 554 is arranged between one end of the button 553 close to the middle of the shell 1 and the inner wall of the installation slot 551. The spring 554 is sleeved on the outer surface of the locking column 552 to provide a basis for the installation and disassembly of the swivel joint 4. The quick-release component 55 also includes a locking head 555 and a locking port 556. The locking heads 555 are respectively inserted into the left and right sides of the upper end of the shell 1. The upper ends of the locking heads 555 are fixedly connected to the lower end of the swivel joint 4. The locking ports 556 are all opened at the middle of the inside of the locking head 555. The middle part of the locking port 556 is a round hole and the lower part is a C-shaped hole. The middle part of the outer surface of the locking column 5x is fitted with the inner wall of the locking port 556 to quickly fix and release the swivel joint 4. The drive mechanism 5 also includes a gearbox 56. The gearbox 56 is arranged at the upper end inside the shell 1. The upper end of the output shaft of the gearbox 56 is fixedly connected to the lower end of the drive shaft 2. The inside of the gearbox 56 is provided with a planetary gear set to increase the torque of the electric screwdriver. The drive mechanism 5 also includes a motor 57. The motor 57 is arranged in the middle of the inside of the shell 1. The input end of the motor 57 is electrically connected to the output end of the single-chip microcomputer 7. The upper end of the output shaft of the motor 57 is fixedly connected to the lower end of the reduction shaft of the gearbox 56 to provide stable drive for the electric screwdriver. There is a swivel joint that can be quickly disassembled and assembled. When the swivel joint is not installed, the bolts can be tightened normally. When the swivel joint is installed, the output direction of power can be changed, which is convenient for the assembly work at the bottom of the circuit breaker.

[0025] The working principle of the electric screwdriver provided by the utility model for bottom assembly is as follows: when assembling the bottom of the circuit breaker, it is necessary to install the adapter 4, first install the screwdriver bit of the appropriate size inside the screwdriver bit slot 2 54, then press the two buttons 553 inward at the same time, driving the locking column 552 to move inward, and the spring 554 is compressed by the force until the locking column 552 reaches the appropriate position, pick up the adapter 4, insert the locking head 555 into the installation slot 551, and slowly insert the lower end of the bevel gear 1 51 into the screwdriver bit slot 2. 553 is released, and the spring 554 expands without force, driving the locking column 552 and the button 553 to move outward until they return to their original position. As the locking column 552 moves outward, the locking column 552 in the middle is locked. The thin rod at the bottom also moves outward. At this time, the end of the locking column 552 close to the middle of the shell 1 is located in the circular opening in the middle of the locking hole 556. The hole below the locking hole 556 is staggered with the thin rod at the middle of the locking column 552. The diameter of the end of the locking column 552 close to the middle of the shell 1 is greater than the width of the hole below the locking hole 556. The locking head 555 is fixed, and the adapter 4 is also fixed. At this time, the adapter 4 is installed in place, the bevel gear 51 is connected to the transmission shaft 2, and the single-chip microcomputer 7 controls the motor 57 to run. The output shaft of the motor 57 drives the reduction shaft of the gear box 56 to rotate. Through the transmission of a series of planetary gear sets inside the gear box 56, the torque of the motor 57 becomes larger, driving the transmission shaft 2 and the bevel gear 1 51 to rotate synchronously. Because the bevel gear 1 51 is meshed with the bevel gear 2 53, the bevel gear 2 53 will also rotate accordingly, driving the screwdriver head to rotate. At this time, the power output direction of the electric screwdriver is upward. You only need to hold the electric screwdriver normally and you can quickly assemble the bottom of the circuit breaker without squatting.

[0026] It is worth noting that the single chip microcomputer 7 disclosed in the above embodiment is an EN8F5113 single chip microcomputer, the motor 57 is a BL3650SI motor, and the single chip microcomputer 7 controls the operation of the motor 57 using a method commonly used in the prior art.

[0027] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electric screwdriver suitable for bottom assembly, characterized by: It comprises a housing (1) and a driving mechanism (5); Shell (1): The middle portion of the upper end thereof is rotatably connected to a transmission shaft (2), and the upper end of the shell (1) is connected to an adapter (4) via a limit block (3); The driving mechanism (5) comprises a bevel gear 1 (51), a screwdriver bit slot 1 (52), a bevel gear 2 (53) and a screwdriver bit slot 2 (54), wherein the bevel gear 1 (51) is rotatably connected to the middle of the lower end of the adapter (4), the screwdriver bit slot 1 (52) is opened at the middle upper end of the transmission shaft (2), the lower end of the bevel gear 1 (51) is inserted into the inside of the screwdriver bit slot 1 (52), the bevel gear 2 (53) is rotatably connected to the middle of the upper end of the adapter (4), the bevel gear 1 (51) is meshed with the bevel gear 2 (53), and the screwdriver bit slot 2 (54) is opened at the middle of the right end of the bevel gear 2 (53).

2. The electric screwdriver suitable for bottom assembly according to claim 1, characterized in that: It also includes a battery (6) and a single-chip microcomputer (7), wherein the battery (6) is arranged at the lower end of the interior of the housing (1), and the single-chip microcomputer (7) is arranged at the middle of the right side of the outer surface of the housing (1), and the input end of the single-chip microcomputer (7) is electrically connected to the output end of the battery (6).

3. The electric screwdriver suitable for bottom assembly according to claim 1, characterized in that: The driving mechanism (5) further includes a quick-release assembly (55), the quick-release assembly (55) including a mounting groove (551), a locking column (552), a button (553) and a spring (554), the mounting groove (551) being respectively opened at the upper ends of the left and right sides of the interior of the housing (1), the locking columns (552) being slidably connected to the interior of the mounting groove (551), the buttons (553) being arranged at the outer ends of the locking columns (552), and a spring (554) being arranged between an end of the button (553) close to the middle of the housing (1) and the inner wall of the mounting groove (551), and the spring (554) being sleeved on the outer surface of the locking column (552).

4. The electric screwdriver suitable for bottom assembly according to claim 3, characterized in that: The quick-release assembly (55) further comprises a locking head (555) and a locking opening (556), wherein the locking head (555) is respectively plugged into the left and right sides of the upper end of the housing (1), the upper end of the locking head (555) is fixedly connected to the lower end of the adapter (4), the locking opening (556) is opened in the middle of the inner portion of the locking head (555), and the middle portion of the outer surface of the locking column (552) is fitted with the inner wall of the locking opening (556).

5. The electric screwdriver suitable for bottom assembly according to claim 2, characterized in that: The driving mechanism (5) further includes a gear box (56), which is arranged at the upper end of the interior of the housing (1), the upper end of the output shaft of the gear box (56) being fixedly connected to the lower end of the transmission shaft (2), and a planetary gear set being provided inside the gear box (56).

6. The electric screwdriver suitable for bottom assembly according to claim 5, characterized in that: The driving mechanism (5) further comprises a motor (57), which is arranged in the middle of the housing (1), the input end of the motor (57) being electrically connected to the output end of the single-chip microcomputer (7), and the upper end of the output shaft of the motor (57) being fixedly connected to the lower end of the reduction shaft of the gear box (56).

7. The electric screwdriver suitable for bottom assembly according to claim 1, characterized in that: It also includes an anti-slip rubber pad (8), which is respectively arranged at the lower ends of the front and rear sides of the outer surface of the shell (1), and the outer surface of the anti-slip rubber pad (8) is provided with evenly distributed anti-slip strips.

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