Electric expander

Abstract

The present application belongs to the technical field of electric flaring machine, and particularly relates to an electric flaring machine. In view of the deficiency that the existing electric flaring machine does not simultaneously have a detection anti-rotation mechanism and a chuck anti-rotation structure, the present application adopts the following technical scheme: the electric flaring machine comprises: a machine body comprising a machine shell and a chuck seat for mounting a chuck; the chuck comprises a boss outside the machine shell, and the boss is provided with an anti-rotation groove; the detection anti-rotation mechanism comprises a detection switch arranged in the machine shell, a movable assembly electrically connected with the detection switch, and the movable assembly has an anti-rotation part which can axially move in and out of the anti-rotation groove; a controller electrically connected with the detection switch; a motor controlled by the controller; a flaring mechanism driven by the motor; when the chuck is installed in place, the chuck is electrically connected with the movable assembly, the detection switch sends a signal to the controller, and the anti-rotation part of the movable assembly is kept in the anti-rotation groove. The electric flaring machine has a detection anti-rotation mechanism, and the detection anti-rotation structure simultaneously has the chuck detection and chuck anti-rotation functions.

Description

Technical Field

[0001] This invention belongs to the technical field of electric flaring machines, and specifically relates to electric flaring machines. Background Technology

[0002] During the maintenance of refrigeration equipment, it is often necessary to flare copper pipes. Flaring copper pipes refers to expanding the end of a copper pipe outward at a certain angle to form a flared opening, in order to better connect the copper pipe and fittings.

[0003] Currently, electric flaring machines (mostly using lithium batteries) are available on the market, but most do not inspect the chuck. If the chuck is not installed correctly, it may accidentally trigger the start switch, posing a safety hazard.

[0004] To address the issue of accidental triggering when the clamp is not installed, Chinese utility model patent CN221209632U ​​discloses a tube expander with a control switch, comprising: a tube expander body with a mounting groove formed on its surface; a clamp movably disposed within the mounting groove; and a switch assembly disposed within the tube expander body and used to control the operation of the tube expander body. The clamp is disposed within the mounting groove via a limiting structure. The limiting structure has at least: a protrusion protruding from the outer peripheral wall of the clamp; and a locking block protruding from the groove wall of the mounting groove, with adjacent locking blocks forming an installation opening. The locking blocks and the bottom of the mounting groove form a limiting space. After the protrusion is installed into the mounting groove along the installation opening, rotating the clamp causes the protrusion to abut against the locking block. Further rotation of the clamp triggers the switch assembly. After rotating the clamp and triggering the switch assembly, the tube expander body can be powered on and operate. When the clamp is disassembled from the mounting groove, the protrusion disengages from the switch assembly, and the tube expander body cannot start operating.

[0005] The aforementioned utility model patent solution, although equipped with a switch assembly, only activates the expander (motor) when the chuck's protrusion triggers the switch assembly. However, the aforementioned invention patent solution lacks a structure to prevent the chuck's circumferential rotation (the spring-loaded pin, spring, and slotted protrusion structure only achieve positioning; when the force required to rotate the chuck exceeds the spring's force, the spring is further compressed, the spring-loaded pin moves out of the protrusion's slot, and the chuck rotates). Furthermore, the switch assembly uses a microswitch, which physically triggers the switch every time the chuck is disassembled or assembled, making the switch assembly prone to failure and damage; the structure for detecting the chuck's position is also unrelated to the structure for preventing the chuck's circumferential rotation. Summary of the Invention

[0006] This invention addresses the deficiency of existing electric flaring machines that do not simultaneously possess a detection anti-rotation mechanism and a chuck anti-rotation structure. It provides an electric flaring machine that has both a detection anti-rotation mechanism and a chuck anti-rotation structure, and the detection anti-rotation mechanism and the chuck anti-rotation structure are linked together.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an electric flaring machine, comprising: The machine body includes the housing and the chuck mount for mounting the chuck; The chuck includes a boss on the outside of the housing, and the boss has an anti-rotation groove. The detection anti-rotation mechanism includes a detection switch disposed in the housing and a movable component electrically connected to the detection switch. The movable component has an anti-rotation part that can move axially and enter and exit the anti-rotation groove. The controller is electrically connected to the detection switch; The motor is controlled by the controller; The flaring mechanism is driven by a motor; When the chuck is installed in place, it is electrically connected to the moving component, the detection switch sends a signal to the controller, and the anti-rotation part of the moving component remains in the anti-rotation groove.

[0008] As an improvement, the detection switch and the chuck seat are electrically connected, and there is a gap between the moving component and the chuck seat. When the chuck is installed in place, the chuck, the moving component, the detection switch, and the chuck seat are connected to form a circuit.

[0009] As an improvement, the detection anti-rotation mechanism includes the aforementioned movable component mounted on the machine body, and a spring member acting on the movable component to keep the movable component in the anti-rotation groove. The movable component has the aforementioned anti-rotation part that can enter and exit the anti-rotation groove and an operating part exposed on the machine body. The anti-rotation part and the operating part are linked together. The anti-rotation mechanism and the anti-rotation groove are configured such that when the anti-rotation part is located in the anti-rotation groove, the anti-rotation mechanism completely prevents the chuck from rotating.

[0010] As an improvement, the detection anti-rotation mechanism also includes an anti-rotation seat fixed in the housing and a conductive block fixed on the anti-rotation seat. The housing and the anti-rotation seat are non-conductive, while the elastic element is conductive and abuts against the conductive block.

[0011] As an improvement, the detection anti-rotation mechanism also includes a first perforated conductive sheet fixedly connected to the conductive block and a first wire connecting the first perforated conductive sheet and the detection switch; the detection switch and the chuck seat are electrically connected through a second perforated conductive sheet and a second wire.

[0012] As an improvement, the movable component is rotatably connected to the anti-rotation seat, the anti-rotation part is exposed outside the housing, the elastic element is a compression spring, and the two ends of the elastic element abut against the conductive block and the movable component respectively.

[0013] As an improvement, the elastic element abuts against the middle part of the movable component, one end of the movable component forms a shaft and is rotatably connected to the anti-rotation seat, and the anti-rotation part is located at the other end of the movable component; a spring groove is opened on the anti-rotation seat, and a spring post is formed on the movable component; The first perforated conductive sheet, conductive block, anti-rotation seat, and housing are fixed together by the same screw.

[0014] As an improvement, the active component includes a conductive anti-rotation component and a button fixed to the conductive anti-rotation component. The button is exposed outside the housing, the anti-rotation part is formed on the conductive anti-rotation component, and the operation part is formed on the button. The buttons and conductive anti-rotation components are tightly fitted together; the buttons are generally T-shaped with their smaller parts exposed outside the casing; the buttons are non-conductive.

[0015] As an improvement, the chuck has an abutment surface at its end, and an anti-rotation groove is formed on the abutment surface. During the installation of the chuck, the abutment surface of the chuck first abuts against the anti-rotation part, and then the chuck rotates to the position of the anti-rotation groove corresponding to the anti-rotation part. At this time, the anti-rotation part automatically enters the anti-rotation groove under the action of the elastic element. The force-bearing parts between the anti-rotation part and the anti-rotation groove are perpendicular to the rotation direction of the chuck, so that when the anti-rotation part is located in the anti-rotation groove, the anti-rotation mechanism completely prevents the chuck from rotating.

[0016] As an improvement, the flaring mechanism includes a flaring head, and the locking direction of the clamp is consistent with the rotation direction of the flaring head when flaring. An axial anti-detachment structure is formed between the chuck and the machine body.

[0017] The beneficial effects of the electric flaring machine of the present invention are: it has a detection and anti-rotation mechanism, which simultaneously performs chuck detection and chuck anti-rotation functions; the motor only starts when the chuck is detected; it uses an electrical connection to detect the chuck, eliminating the need for a physical detection switch, thus extending the service life of the detection switch; the protrusion and anti-rotation groove of the chuck cooperate with the movable component with the anti-rotation part of the detection and anti-rotation mechanism to achieve chuck anti-rotation. The movable component can be a single part or assembled from multiple parts. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the electric flaring machine according to Embodiment 1 of the present invention.

[0019] Figure 2 This is an exploded view of the structure of the electric flaring machine according to Embodiment 1 of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of the electric flaring machine according to Embodiment 1 of the present invention after a portion of the machine casing has been concealed.

[0021] Figure 4 This is a schematic diagram of the detection and anti-rotation mechanism, chuck seat, and half clamp of the electric flaring machine according to Embodiment 1 of the present invention.

[0022] Figure 5 This is a schematic diagram of the body and anti-rotation detection mechanism of the electric flaring machine according to Embodiment 1 of the present invention.

[0023] Figure 6 This is a partial structural diagram of the casing of the electric flaring machine according to Embodiment 1 of the present invention.

[0024] Figure 7 This is a schematic diagram of the chuck seat of the electric flaring machine body according to Embodiment 1 of the present invention.

[0025] Figure 8 This is a schematic diagram of the chuck of the electric flaring machine according to Embodiment 1 of the present invention.

[0026] Figure 9 This is a schematic diagram of the circumferential anti-rotation structure of the electric flaring machine according to Embodiment 1 of the present invention.

[0027] Figure 10 This is an exploded view of the circumferential anti-rotation structure of the electric flaring machine according to Embodiment 1 of the present invention.

[0028] Figure 11 This is a schematic diagram of the conductive anti-rotation component of the electric flaring machine according to Embodiment 1 of the present invention.

[0029] In the diagram, 01 is the fuselage; 02 is the chuck; and 03 is the anti-rotation detection mechanism. 1. Housing; 2. Chuck seat; 21. U-shaped annular groove; 22. Radial outer wall; 23. Notch; 3. Half clamp; 31. Anti-detachment protrusion; 32. Boss; 321. Abutment surface; 33. Anti-rotation groove; 34. Limiting part; 4. Conductive anti-rotation component; 41. Anti-rotation part; 42. Shaft part; 43. Connecting part; 44. Spring post; 45. Button mounting position; 5. Buttons; 6. Anti-rotation design; 7. Elastic components; 8. Conductive block; 91. First perforated conductive sheet; 92. First wire; 93. Second perforated conductive sheet; 94. Second wire; DS, detection switch; M, motor; C, moving component. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0031] Example 1 See Figures 1 to 11 The electric flaring machine of this invention includes: The body 01 includes a housing 1 and a chuck seat 2 for mounting the chuck 3; The chuck 02 includes a boss 32 on the outside of the housing 1, and the boss 32 has an anti-rotation groove 33. The detection anti-rotation mechanism 03 includes a detection switch DS disposed in the housing 1 and a movable component C electrically connected to the detection switch DS. The movable component C has an anti-rotation part 41 that can move axially and enter and exit the anti-rotation groove 33. The axial movement of the movable component C refers to the displacement in the axial direction. It can be a complete axial movement or a combination of axial and other directions, such as swinging. Here, the axial direction is the insertion direction of the chuck 02, and also the axial direction of the copper tube, the chuck seat 2, and the chuck 02. The controller is electrically connected to the detection switch DS; The motor is controlled by the controller; The flaring mechanism is driven by motor M; Among them, the chuck seat 2, the chuck 3 and the movable component C are all conductive, and there is a gap between the movable component C and the chuck seat 2; When the chuck 02 is installed in place, the movable component C and the chuck 02 are electrically connected, and the chuck 02, the movable component C, the detection switch DS, and the chuck seat 3 are connected to form a circuit, and the detection switch DS sends a signal to the controller. When the chuck 02 is installed in place, the anti-rotation part 41 of the movable component C remains in the anti-rotation groove 33.

[0032] In this embodiment, the detection switch DS and the chuck seat 2 are electrically connected, and there is a gap between the movable component C and the chuck seat 2. When the chuck 02 is installed in place, the chuck 02, movable component C, detection switch DS, and chuck seat 3 are connected to form a circuit. The chuck 02, movable component C, detection switch DS, and chuck seat 3 are conductive, while the housing 1 is not conductive.

[0033] In this embodiment, the anti-rotation detection mechanism 03 further includes an anti-rotation seat 6 fixed in the housing 1 and a conductive block 8 fixed on the anti-rotation seat 6. The anti-rotation seat 6 is non-conductive, while the elastic member 7 is conductive and abuts against the conductive block 8.

[0034] In this embodiment, the detection anti-rotation mechanism 03 also includes a first open-hole conductive sheet 91 fixedly connected to the conductive block 8, a first wire 92 connecting the first open-hole conductive sheet 91 and the detection switch DS, a second open-hole conductive sheet 93 and a second wire 94 fixed on the chuck seat 2, and the detection switch DS and the chuck seat 2 are electrically connected through the second open-hole conductive sheet 93 and the second wire 94.

[0035] In this embodiment, the anti-rotation detection mechanism 03 includes the aforementioned movable component C disposed on the machine body 01, and an elastic member 7 acting on the movable component C to keep the movable component C in the anti-rotation groove 33. The movable component C has the aforementioned anti-rotation part 41 that can enter and exit the anti-rotation groove 33 and an operating part exposed on the machine body 01. The anti-rotation part 41 and the operating part are linked together. The anti-rotation mechanism 03 and the anti-rotation groove 33 are configured such that when the anti-rotation part 41 is located in the anti-rotation groove 33, the anti-rotation mechanism 03 completely prevents the chuck 02 from rotating.

[0036] In this embodiment, the force-bearing parts between the anti-rotation part 41 and the anti-rotation groove 33 are perpendicular to the rotation direction of the chuck 02, thereby ensuring that the anti-rotation part 41 completely prevents the chuck 02 from rotating when it is located in the anti-rotation groove 33. When the chuck 01 is subjected to force and rotates or has a tendency to rotate, the force-bearing parts of the anti-rotation part 41 and the anti-rotation groove 33 are perpendicular to the rotation direction of the chuck 02, thus preventing the chuck 02 from rotating as it would be incapable of being prevented from rotating, unlike structures such as glass ball screws / steel balls with compression springs.

[0037] In this embodiment, the movable component C swings relative to the housing 1. The movable component C has an anti-rotation part 41 exposed to the housing 1 and an operating part exposed to the housing 1. Specifically, the anti-rotation part 41 is cylindrical, and the anti-rotation groove 33 is U-shaped. The anti-rotation groove 33 includes two parallel planes and a semi-circular surface, and each surface of the anti-rotation groove 33 is along the axial direction.

[0038] In other embodiments, the movable component C may also move relative to the housing 1 in other directions or in other forms.

[0039] In this embodiment, the body 01 also includes an anti-rotation seat 6 fixed in the housing 1, the movable component C is rotatably connected to the anti-rotation seat 6, the elastic element 7 is a compression spring, and the two ends of the elastic element 7 abut against the conductive block 8 and the movable component C respectively.

[0040] In this embodiment, the elastic member 7 abuts against the middle part of the movable component C. One end of the movable component C forms a shaft portion 42 and is rotatably connected to the anti-rotation seat 6. The anti-rotation portion 41 is located at the other end of the movable component C. The anti-rotation seat 6 has a groove portion that mates with the shaft portion 42, and the groove portion has a semi-circular groove.

[0041] In this embodiment, a spring groove is formed on the anti-rotation seat 6, and a spring post 44 is formed on the movable component C. One end of the compression spring is located in the spring groove, and the other end is sleeved on the spring post 44.

[0042] In this embodiment, the first perforated conductive sheet, the conductive block 8, the anti-rotation seat 6, and the housing 1 are fixed together by the same screw.

[0043] In this embodiment, the movable component C includes a conductive anti-rotation member 4 and a button 5 fixedly connected to the conductive anti-rotation member 4. The button 5 is exposed outside the housing 1. An anti-rotation part 41 is formed on the conductive anti-rotation member 4, and an operating part is formed on the button 5. The hardness of the button 5 is less than that of the conductive anti-rotation member 4, and the button 5 is non-conductive. The conductive anti-rotation member 4 also includes a connecting part 43 that connects the anti-detachment part 41 and the shaft part 42.

[0044] In this embodiment, a button mounting position 45 is formed on the connecting portion 43 of the conductive anti-rotation component 4. The button mounting position 45 includes a groove, a protrusion on the groove, and a hole opened in the bottom wall of the groove. The button is installed in the groove and fitted onto the protrusion. The conductive anti-rotation component 4 and the button 5 are fixed together by screws.

[0045] In this embodiment, the button 5 and the conductive anti-rotation component 4 are tightly fitted together.

[0046] In this embodiment, the button 5 is generally T-shaped with a small portion exposed outside the housing 1 to prevent the button 5 from falling out.

[0047] In this embodiment, an axial anti-detachment structure is formed between the chuck 02 and the body 01. The axial anti-detachment structure includes an anti-detachment protrusion 31 formed on the half-clamp 3 of the chuck 02, a U-shaped annular groove 21 on the chuck seat 2 of the body 01, and a notch 23 on the radial outer wall 22 of the U-shaped annular groove 21 for the anti-detachment protrusion 31 to enter and exit. The axial anti-detachment structure can be the same as that in the prior art. A limiting part 34 is also formed on the half-clamp 3 of the chuck 02, and the limiting part 34 is in contact with the anti-detachment protrusion 31.

[0048] In this embodiment, there are multiple notches 23 and anti-rotation grooves 33, which are evenly distributed around the circumference and are of equal number. Specifically, there are three anti-detachment protrusions 31, notches 23, and anti-rotation grooves 33. The multiple anti-detachment protrusions 31, notches 23, and anti-rotation grooves 33 ensure that the chuck 02 is subjected to uniform force, and that the chuck 02 can prevent rotation when entering the U-shaped annular groove 21 from any notch 23.

[0049] In this embodiment, the boss 32 of the chuck 02 forms an abutment surface 321 on the side near the housing 1, and the anti-rotation groove 33 is formed on the abutment surface 321. The groove formed between the abutment surface 321 and the anti-detachment protrusion 31 is adapted to the thickness of the radial outer wall 22 of the U-shaped annular groove 21. The axial dimension of the U-shaped annular groove 21 is slightly larger than the thickness of the anti-detachment protrusion 31.

[0050] In this embodiment, the machine body 01 has a trigger switch. After the flaring machine is powered on and the chuck 03 is detected, the motor M will start only after the trigger switch is pressed.

[0051] In this embodiment, the flaring mechanism includes a flaring head, and the locking direction of the clamp 02 is consistent with the rotation direction of the flaring head during flaring. The flaring mechanism is prior art and will not be described in detail here.

[0052] In this embodiment, the controller and the wires connecting the detection switch DS and the controller are not shown.

[0053] Other structures of the electric flaring machine in this embodiment can be found in the accompanying drawings and prior art.

[0054] The principle of the detection chuck 3 of the electric flaring machine in this embodiment is as follows: When the chuck 03 is not installed, there is a gap between the conductive anti-rotation component 4 and the chuck seat 2, and the conductive anti-rotation component 4 and the chuck seat 2 are in a disconnected and non-conductive state. The circuit of the detection switch DS is open, no current flows, and the detection switch DS outputs a normal signal. After the chuck 03 is installed, the conductive anti-rotation component 4 and the chuck seat 2 are electrically connected through the half-clamp 3 of the chuck 03. The conductive anti-rotation component 4, chuck 3, chuck seat 2, second conductive piece 94, second wire 93, detection switch DS, first wire 92, first conductive piece 91, conductive block 8, and elastic component 7 are connected in sequence to form a continuous conductive circuit. The circuit is connected, and the detection switch DS outputs a trigger detection signal (the chuck 3 is detected).

[0055] The anti-detachment principle of the chuck 3 of the electric flaring machine in this embodiment is as follows: In the initial state, the conductive anti-rotation component 4 is exposed outside the housing 1 under the action of the elastic component 7, and the anti-rotation part 41 protrudes outward from the radial outer wall 22; after fixing the copper tube into the chuck 02, the anti-detachment protrusion 31 of the half-clamp 3 of the chuck 02 is aligned with the notch 23 of the radial outer wall 22 of the U-shaped annular groove 21 of the chuck seat 2 of the machine body 01, so that the chuck 02 moves axially until the contact surface 321 contacts the radial outer wall 22. At this time, the anti-detachment protrusion 31 is completely inserted into the U-shaped annular groove 21. During the axial movement of the chuck 02, the contact surface 321 of the chuck 02 contacts the anti-rotation part 41 of the conductive anti-rotation component 4, causing the conductive anti-rotation component 4 to rotate; after the contact surface 321 of the chuck 02 contacts the radial outer wall 22, it rotates clockwise (due to the setting of the limiting part 34, it can only rotate along one direction). Rotate the chuck 02 in one direction (usually clockwise) until the limiting part 34 of the chuck 02 contacts the radial outer wall 22 of the chuck seat 2. During the rotation of the chuck 02, the anti-rotation groove 33 on the contact surface 321 of the chuck 02 gradually aligns with the anti-rotation part 41. After the chuck 02 is rotated to the position, the anti-rotation groove 33 on the contact surface 321 of the chuck 02 also aligns with the anti-rotation part 41. Under the action of the elastic member 7, the anti-rotation part 41 of the conductive anti-rotation member 4 enters the anti-rotation groove 33 of the chuck 02. At this time, the chuck 02 cannot rotate relative to the machine body 01 (the size of the anti-rotation groove 33 is slightly larger than the anti-rotation part 41, and the chuck 02 can rotate slightly), thus locking the chuck 02. Therefore, during the entire flaring process (the forward and reverse rotation of the flaring head), the chuck 02 will not come off relative to the machine body 01. After the flaring is completed, press button 5. The conductive anti-rotation component 4 will rotate. When the anti-detachment protrusion 31 of the conductive anti-rotation component 4 moves out of the anti-rotation groove 33 of the chuck 02, the chuck 02 will be released from its lock. Press button 5 and rotate the chuck 02 counterclockwise. When the anti-rotation groove 33 of the chuck 02 is misaligned with the anti-detachment protrusion 31, you can continue to rotate the chuck counterclockwise to the appropriate position without pressing button 5. This will completely separate the chuck 02 from the machine body 01 (the chuck 02 can be placed under the machine body 01 to help with separation by gravity).

[0056] The beneficial effects of the electric flaring machine according to Embodiment 1 of the present invention are as follows: It has a detection and anti-rotation mechanism 03, which simultaneously detects the chuck 02 and prevents its circumferential rotation 9 (circumferential anti-rotation). The conductive anti-rotation component 4 and the elastic component 7 of the detection and anti-rotation mechanism 03 are used both to detect the chuck 02 and to prevent its circumferential rotation. The controller only instructs the motor M to start after the chuck 02 is detected (if the detection switch DS does not detect the chuck, the motor M will not work even if the trigger switch is pressed). It also has an axial anti-detachment structure, which prevents the chuck 02 from axially detaching, thereby preventing the flaring machine from... During the insertion process, the chuck 02 separates from the machine body 01 to ensure safety; the anti-rotation detection mechanism 03 includes a spring element 7, making the installation of the chuck 02 onto the machine body 01 easier; the anti-rotation detection mechanism 03 includes an operating part, which can be operated to remove the movable component C from the anti-rotation groove 33; the movable component C and the anti-rotation groove 33 are configured such that when the movable component C is in the anti-rotation groove 33, the movable component C completely prevents the chuck 02 from rotating; the conductive anti-rotation element 4 rotates, and during the insertion process of the chuck 02, the structure in which the chuck 02 pushes the conductive anti-rotation element 4 is a force-saving structure, reducing the difficulty of inserting the chuck 02; during the insertion process of the chuck 02, the chuck... 02 moves axially first and then rotates. During the axial movement of the chuck 02, it abuts against the anti-rotation part 41. The chuck 02 rotates to the position of the anti-rotation groove 33 corresponding to the anti-rotation part 41 (this position is also the position of the anti-disengagement protrusion 31 and the radial outer wall 22 axially). The anti-rotation part 41 automatically enters the anti-rotation groove 33 under the action of the spring member 7, without the need to press the button 5 separately, making the operation simpler. When unlocking, the button 5 is located between the shaft part 42 and the compression spring. At this time, it is a force-reducing structure, thereby reducing or avoiding accidental operation. The button 5 is provided to improve comfort. The number of parts is small, and the structure is simple and reliable. The locking direction of the chuck 02 is the same as when the flaring head is flared. The rotation direction is consistent, so even if the chuck 02 is not installed in place (the anti-detachment protrusion 31 enters the U-shaped ring groove 21 but has not rotated to the position where the anti-rotation part 41 of the conductive anti-rotation component 4 enters the anti-rotation groove 33) and the switch is accidentally triggered, the expansion head will also drive 02 to rotate in the locking direction when it rotates, so that the anti-rotation part 41 of the conductive anti-rotation component 4 enters the anti-rotation groove 33; when the anti-detachment protrusion 31 of the chuck 02 does not enter the U-shaped ring groove 21, if the switch is accidentally triggered at this time, the chuck 02 is easily separated from the machine body 01 under the action of gravity (usually the chuck 02 and the machine body 01 will not be directly facing each other), and the motor M will stop working immediately.

[0057] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the content described in the above specific embodiments. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. An electric flaring machine, characterized in that: include: The body (01) includes a housing (1) and a chuck seat (2) for mounting the chuck (02); The chuck (02) includes a boss (32) outside the housing (1), and the boss (32) has an anti-rotation groove (33). The detection anti-rotation mechanism (03) includes a detection switch (DS) disposed in the housing (1) and a movable component (C) electrically connected to the detection switch (DS). The movable component (C) has an anti-rotation part (41) that can move axially and enter and exit the anti-rotation groove (33). The controller is electrically connected to the detection switch (DS); The motor (M) is controlled by the controller; The flaring mechanism is driven by a motor (M); When the chuck (02) is installed in place, the chuck (02) is electrically connected to the movable component (C), the detection switch (DS) sends a signal to the controller, and at the same time the anti-rotation part (41) of the movable component (C) is kept in the anti-rotation groove (33).

2. The electric flaring machine according to claim 1, characterized in that: The detection switch (DS) and the chuck seat (2) are electrically connected. There is a gap between the movable component (C) and the chuck seat (2). When the chuck (02) is installed in place, the chuck (02), the movable component (C), the detection switch (DS), and the chuck seat (3) are connected to form a circuit.

3. The electric flaring machine according to claim 1, characterized in that: The detection anti-rotation mechanism (03) includes the aforementioned movable component (C) provided on the machine body (01) and a spring member (7) acting on the movable component (C) to keep the movable component (C) in the anti-rotation groove (33). The movable component (C) has the aforementioned anti-rotation part (41) that can enter and exit the anti-rotation groove (33) and an operating part exposed on the machine body (01). The anti-rotation part (41) and the operating part are linked together. The anti-rotation mechanism (03) and the anti-rotation groove (33) are configured such that when the anti-rotation part (41) is located in the anti-rotation groove (33), the anti-rotation mechanism (03) completely prevents the chuck (02) from rotating.

4. The electric flaring machine according to claim 3, characterized in that: The detection anti-rotation mechanism (03) also includes an anti-rotation seat (6) fixed in the housing (1) and a conductive block (8) fixed on the anti-rotation seat (6). The housing (1) and the anti-rotation seat (6) are non-conductive, while the elastic element (7) is conductive and abuts against the conductive block (8).

5. The electric flaring machine according to claim 4, characterized in that: The detection anti-rotation mechanism (03) also includes a first open-hole conductive sheet (91) fixedly connected to the conductive block (8) and a first wire (92) connecting the first open-hole conductive sheet (91) and the detection switch (DS); the detection switch (DS) and the chuck seat (2) are electrically connected through the second open-hole conductive sheet (93) and the second wire (94).

6. The electric flaring machine according to claim 4, characterized in that: The movable component (C) is rotatably connected to the anti-rotation seat (6), the anti-rotation part (41) is exposed outside the housing (1), the elastic element (7) is a compression spring, and the two ends of the elastic element (7) abut against the conductive block (8) and the movable component (C) respectively.

7. The electric flaring machine according to claim 6, characterized in that: The elastic element (7) abuts against the middle part of the movable component (C). One end of the movable component (C) forms a shaft (42) and is rotatably connected to the anti-rotation seat (6). The anti-rotation part (41) is located at the other end of the movable component (C). A spring groove is opened on the anti-rotation seat (6), and a spring post (44) is formed on the movable component (C). The first perforated conductive sheet, conductive block (8), anti-rotation seat (6) and housing (1) are fixed together by the same screw.

8. The electric flaring machine according to claim 1, characterized in that: The active component (C) includes a conductive anti-rotation component (4) and a button (5) fixed to the conductive anti-rotation component (4). The button (5) is exposed outside the housing (1). The anti-rotation part (41) is formed on the conductive anti-rotation component (4), and the operation part is formed on the button (5). The button (5) and the conductive anti-rotation component (4) are tightly fitted together; the button (5) is generally T-shaped and its small part is exposed outside the casing (1); the button (5) is non-conductive.

9. The electric flaring machine according to any one of claims 1 to 8, characterized in that: The chuck (02) has an abutment surface 321 (32) at its end, and an anti-rotation groove (33) is formed on the abutment surface 321 (32). During the installation of the chuck (01), the abutment surface 321 (32) of the chuck (01) first abuts against the anti-rotation part (41), and then the chuck (01) rotates to the position of the anti-rotation groove (33) corresponding to the anti-rotation part (41). At this time, the anti-rotation part (41) automatically enters the anti-rotation groove (33) under the action of the elastic member (7). The force-bearing parts between the anti-rotation part (41) and the anti-rotation groove (33) are perpendicular to the rotation direction of the chuck (02), so that when the anti-rotation part (41) is located in the anti-rotation groove (33), the anti-rotation mechanism (03) completely prevents the chuck (02) from rotating.

10. The electric flaring machine according to any one of claims 1 to 8, characterized in that: The flaring mechanism includes a flaring head, and the locking direction of the clamp (02) is consistent with the rotation direction of the flaring head during flaring; An axial anti-detachment structure is formed between the chuck (02) and the body (01).

Images