Safety type electric crimping tool

Abstract

The invention relates to the field of electric tools, and discloses a safety type electric crimping tool which comprises a shell, a motor, a roller, a crimping head, a recognizer and a torsion protection device. The motor is installed at the tail end of the shell, and an output shaft of the motor is arranged in the shell. The crimping head is mounted at the front end of the shell; the recognizer is installed outside the crimping head. A roller seat is arranged on the outer side of the roller, and the roller seat and the roller are arranged in the crimping head; and the torsion protection device is arranged in the shell. The mounting state of the crimping head is recognized through the recognizer, when the crimping head is not mounted in a normal position, the motor is always kept in an open-circuit state, tool operation is stopped, and the situation that the moving track of the roller is inclined due to mounting deflection of the crimping head is avoided, so that the crimping head is prevented from being damaged due to asynchronous crimping; in addition, the torsion protection device prevents the roller from resetting to generate strong torque to press the shell, so that the shell and the crimping head are prevented from being pressed and damaged.

Description

Technical Field

[0001] The invention relates to the field of electric tools, in particular to a safe electric crimping tool. Background Art

[0002] An electric crimping tool is a tool that uses a power supply to drive a working head through a transmission mechanism to perform work. It usually relies on a roller to drive the crimping head to perform crimping work.

[0003] Patent publication number CN116810725A discloses an electric crimping tool, comprising: a housing; a working mechanism having a crimping head; a driving mechanism for driving the crimping head to operate; and a control mechanism for controlling the driving mechanism to operate, and having a power supply and a control panel; wherein the driving mechanism comprises: a roller assembly, comprising a roller acting on the crimping head and a roller seat for mounting the roller; a push rod assembly, for driving the roller seat to move, and comprising: a screw rod, rotatably arranged in the housing; a push rod, movably arranged on the outside of the end of the screw rod, and the end is fixed to the roller seat; and a guide sleeve, sleeved on the outer periphery of the screw rod and the push rod; the push rod can drive the roller seat to move during the rotation of the screw rod.

[0004] However, there is no structure for torque protection between the crimping head and the shell in the above patent. When the roller is reset at a long distance, the strong torque generated can easily damage the shell. In addition, since most of the existing crimping heads and shells use a detachable connection, it is not easy to detect when the installation angle of the crimping head is tilted, and the moving trajectory of the roller is easily deviated in this state, resulting in the risk of damage to the crimping head. Summary of the invention

[0005] The present invention aims to solve the technical problem raised in the above background technology and provides a safe electric crimping tool.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A safe electric crimping tool, comprising a housing, a motor, a roller, a crimping head, an identifier, a torque protection device, and a transmission assembly;

[0008] The motor is installed at the rear end of the housing, and the output shaft of the motor is arranged inside the housing;

[0009] The crimping head is installed at the front end of the housing;

[0010] The identifier is installed on the outside of the crimping head;

[0011] A roller seat is arranged on the outer side of the roller, and the roller seat and the roller are both arranged inside the crimping head;

[0012] The torque protection device is arranged inside the shell, and the tail end of the torque protection device is connected to the output shaft of the motor through the transmission component; the front end of the torque protection device is fixedly connected to the roller seat.

[0013] Preferably, the transmission assembly includes a screw rod, a protective sleeve, and a push block;

[0014] The screw rod, protective sleeve and push block are all arranged inside the housing;

[0015] The screw rod is fixedly connected to the output shaft of the motor;

[0016] The protective sleeve is arranged on the outer wall of the screw rod and is threadedly connected to the outer wall of the screw rod; the protective sleeve is slidably connected to the inner wall of the housing;

[0017] The front end of the protective sleeve is fixedly connected with a push block, and the front end of the push block is connected to the torque protection device.

[0018] Preferably, the identifier is connected to the motor via a wire, and a Hall element capable of identifying a magnet is installed on the identifier; a latch is provided on the outer side of the crimping head, and a magnet is installed at the crank of the latch.

[0019] Preferably, a cavity perpendicular to the screw rod is provided on the torque protection device, a spring is installed inside the cavity, a ball is fixedly connected to the outer end of the spring, the ball is bounced to the outside of the cavity by the spring, and a groove is provided on one end of the inner wall of the shell close to the roller, and the ball is stuck in the groove.

[0020] Beneficial effects of the present invention:

[0021] 1. The present invention identifies the installation status of the crimping head through an identifier. When the crimping head is not installed in the correct position, the motor always remains in an off-circuit state to prevent the tool from running, thereby avoiding the crimping head from being installed skewed and causing the roller movement trajectory to be tilted, thereby preventing the crimping head from being damaged due to asynchronous crimping.

[0022] 2. The present invention uses a torque protection device to prevent the roller from resetting and generating a strong torque to compress the shell, thereby avoiding the shell and the crimping head from being damaged by pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the overall structural diagram of this safety electric crimping tool;

[0024] Figure 2 It is a schematic diagram of the cross-section of the shell of this safety electric crimping tool.

[0025] Explanation of the reference numerals: 1. housing; 2. motor; 3. roller; 4. crimping joint; 5. identifier; 6. latch; 7. screw rod; 8. protective cover; 9. push block; 10. torque protection device; 11. cavity; 12. ball; 13. spring. DETAILED DESCRIPTION

[0026] The concept and technical effects of the present invention will be clearly and completely described below in conjunction with embodiments to fully understand the purpose, features and effects of the present invention.

[0027] This application has designed a safe electric crimping tool, as shown in the attached Figure 1 As shown, it includes a housing 1, a motor 2, a roller 3, a crimping head 4, an identifier 5, a torque protection device 10, and a transmission assembly;

[0028] The motor 2 is installed at the rear end of the housing 1, and the output shaft of the motor 2 is arranged inside the housing 1;

[0029] The crimping head 4 is installed at the front end of the housing 1;

[0030] The identifier 5 is installed on the outside of the crimping head 4;

[0031] A roller seat is arranged on the outer side of the roller 3, and the roller seat and the roller 3 are both arranged inside the crimping head 4;

[0032] The torque protection device 10 is arranged inside the housing, and the rear end of the torque protection device 10 is connected to the output shaft of the motor 2 through a transmission assembly; the front end of the torque protection device 10 is fixedly connected to the roller seat.

[0033] As attached Figure 2 As shown, the output shaft of the motor 2 is fixedly connected with a screw rod 7, and the transmission assembly includes a screw rod 7, a protective sleeve 8, and a push block 9;

[0034] The screw rod 7, the protective cover 8 and the push block 9 are all arranged inside the housing 1;

[0035] The screw rod 7 is fixedly connected to the output shaft of the motor 2;

[0036] The protective sleeve 8 is arranged on the outer wall of the screw rod 7 and is threadedly connected to the outer wall of the screw rod 7; the protective sleeve 8 is slidably connected to the inner wall of the housing 1;

[0037] A push block 9 is fixedly connected to the front end of the protective sleeve 8 , and the front end of the push block 9 is connected to the torque protection device 10 .

[0038] The part where the output shaft of the motor 2 is connected to the screw rod 7 is provided with a reduction gear, which is used to slow down the rotation speed of the screw rod 7, thereby improving the running stability of the screw rod 7. The principle of the screw rod 7 driving the roller 3 to run is the working principle of the roller driving the crimping joint commonly used in the prior art;

[0039] The identifier 5 is connected to the motor 2 through a wire, and a Hall element capable of identifying a magnet is installed on the identifier 5; a latch 6 is arranged on the outer side of the crimping head 4, and a magnet is installed at the crank of the latch 6;

[0040] When the installation position of the crimping head 4 is tilted, the Hall element cannot sense the magnet, and the motor 2 remains in the disconnected state;

[0041] When the crimping head 4 is installed in the positive position, the Hall element senses the magnet and transmits a signal to the motor 2, allowing the motor 2 to run;

[0042] When the crimping head 4 is tilted or damaged, the magnet is tilted at the same time, and the Hall element cannot sense the signal of the magnet and turn off the motor 2, so that the motor 2 returns to the off-circuit state.

[0043] A cavity 11 perpendicular to the screw rod 7 is provided on the torque protection device 10, and a spring 13 is installed inside the cavity 11. The outer end of the spring 13 is fixedly connected to a ball 12, and the ball 12 is bounced to the outside of the cavity 11 by the spring 13. A slot is provided on the inner wall of the shell 1 close to the roller 3. The ball 12 is a combination of a hemisphere and a cylinder, and the cylindrical part is connected to the spring 13. The cylindrical part of the ball 12 is stuck in the slot. The hemispherical part of the ball 12 is pushed back into the cavity 11 by the inner wall of the crimping head 4 during the normal movement of the torque protection device 10, preventing the ball 12 from affecting the normal working process. The torque protection device 10 is a stepped structure and can be stuck outside the shell 1 to prevent the roller 3 from directly pressing the shell 1.

[0044] When the roller 3 approaches the shell 1, the torque protection device 10 moves into the shell 1, and the spring 13 pops out the ball 12, so that the ball 12 is stuck inside the shell 1, preventing the roller 3 from continuing to move toward the shell 1, thereby preventing the roller 3 from pressing the shell 1 and causing damage to the shell 1.

[0045] The above embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work shall all fall within the scope of protection of the present invention.

Claims

1. A safe electric crimping tool, characterized in that: It comprises a housing (1), a motor (2), a roller (3), a crimping head (4), an identifier (5), a torque protection device (10), and a transmission assembly; The motor (2) is mounted at the rear end of the housing (1), and the output shaft of the motor (2) is arranged inside the housing (1); The crimping head (4) is mounted at the front end of the housing (1); The identifier (5) is installed outside the crimping head (4); A roller seat is arranged on the outer side of the roller (3), and the roller seat and the roller (3) are both arranged inside the crimping joint (4); The torque protection device (10) is arranged inside the housing, and the rear end of the torque protection device (10) is connected to the output shaft of the motor (2) via a transmission assembly; the front end of the torque protection device (10) is fixedly connected to the roller seat.

2. A safe electric crimping tool according to claim 1, characterized in that: The transmission assembly comprises a screw rod (7), a protective sleeve (8), and a push block (9); The screw rod (7), the protective sleeve (8) and the push block (9) are all arranged inside the housing (1); The screw rod (7) is fixedly connected to the output shaft of the motor (2); The protective sleeve (8) is arranged on the outer wall of the screw rod (7) and is threadedly connected to the outer wall of the screw rod (7); the protective sleeve (8) is slidably connected to the inner wall of the housing (1); The front end of the protective sleeve (8) is fixedly connected to a push block (9), and the front end of the push block (9) is connected to a torque protection device (10).

3. A safe electric crimping tool according to claim 2, characterized in that: The identifier (5) is connected to the motor (2) via a wire, and a Hall element capable of identifying a magnet is installed on the identifier (5); a latch (6) is arranged on the outer side of the crimping head (4), and a magnet is installed at the crank of the latch (6).

4. A safe electric crimping tool according to claim 1, characterized in that: The torque protection device (10) is provided with a cavity (11) perpendicular to the screw rod (7), a spring (13) is installed inside the cavity (11), the outer end of the spring (13) is fixedly connected to a ball (12), the ball (12) is bounced to the outside of the cavity (11) by the spring (13), and a slot is provided at one end of the inner wall of the housing (1) close to the roller (3), and the ball (12) is stuck in the slot.

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