Manual pipe bending device that improves the convenience of bending operations

Abstract

This invention relates to a manual pipe bending device that has an external gear formed on the outer peripheral surface of a bending pipe support and is equipped with an operating latch that engages with it. This allows the operator to easily press and lift the operating lever during the bending process by rotating the lever, ensuring that the bending pipe support rotates a specific angle each time the lever is pressed. This allows the pipe to be bent stably to a specific amount, thus improving the convenience of bending operations with consistent bending angles. The device is characterized by an external gear formed on the outer peripheral surface of the bending pipe support constituting the device, an operating latch that rotates via a third rotating shaft and engages with the external gear at its end, and an elastic component that imparts elastic force to the operating latch.

Description

Technical Field

[0001] This invention relates to a manually operated pipe bending device, and more particularly to a device in which an operator can rotate an operating lever by means of an external gear formed on the outer circumferential surface of a bending pipe support and an operating latch engaging with it. This allows for easy pressing and lifting of the operating lever during pipe bending. Moreover, thanks to the corresponding structure, compared with existing pipe bending devices, it can achieve small and lightweight manufacturing while ensuring excellent bending workability. This ensures excellent mobility of the bending device and allows it to be carried in a vehicle, ultimately improving the convenience of bending operations. Background Technology

[0002] Generally speaking, conduits are used to guide electrical wires or transport fluids (gases, liquids), and they come in a variety of types and applications. As mentioned above, conduits need to be bent into specific angles depending on their installation location. Bending devices can be used to bend them into various angles such as 90° and 45° for use.

[0003] Furthermore, the bending device for bending and forming pipes involves slowly driving the rotating shaft while the work object, i.e., the pipe, is placed and fixed on a bending support mounted on a rotating shaft, thereby causing the bending support to rotate and bending the pipe according to the rotation angle of the bending support as described above.

[0004] Furthermore, the configuration of the bending device varies depending on whether the rotation of the bending pipe support is automatic or manual. The present invention relates to a manual pipe bending device that drives the bending pipe support to work by the operator directly moving the operating lever up and down.

[0005] As described above, manual pipe bending devices are mainly suitable for bending small pipes compared to automatic ones. They also require the operator to bend the pipe based on their feel when turning the operating lever, i.e., the empirical value of the force applied to the operating lever each time the bending pipe support is turned by pressing the operating lever.

[0006] As a manual pipe bending device, it includes registered patent No. 10-1861444 (May 18, 2018), which was filed and registered by the applicant.

[0007] Patent No. 10-1861444 relates to a manual pipe bending device, characterized by a simple structure for fastening between components. However, because the rotation angle of the bending pipe support is unstable each time the operator turns the operating lever and the operator does not press the operating lever each time, it is limited by reduced operability compared to the present invention described below.

[0008] Not only registered patent No. 10-1861444, but existing manual pipe bending devices for bending small pipes all have the problems and limitations mentioned above.

[0009] Furthermore, existing manual pipe bending devices suffer from significantly reduced mobility due to their size and weight, making them difficult to carry in vehicles. Summary of the Invention

[0010] Purpose of the invention

[0011] The present invention aims to solve the problems and limitations mentioned above related to manual pipe bending devices.

[0012] The primary objective is to provide a manual pipe bending device that allows operators to easily perform the pressing operation of the operating rod for rotating the bending pipe support, and that improves the operability of the bending pipe support to rotate at a certain angle during the pressing operation.

[0013] The second objective is to provide a manual pipe bending device that can be manufactured in a small and lightweight manner with a simple internal structure while achieving the objectives described above, thereby allowing the user to easily move the device and carry it in a vehicle.

[0014] Technical solution

[0015] To achieve the objectives described above, the manual pipe bending device according to the present invention is characterized by comprising:

[0016] A support platform is located on the ground; a support frame is attached to one side of the support platform; a rotating frame is rotatably attached to one side of the support frame, and is integrally formed by connecting and separating first and second rotating frame plates in a spaced manner; a curved pipe support is attached to the rotating frame between the first and second rotating frame plates in a manner rotatable by means of a first rotating shaft, and has a guide groove formed on its outer peripheral surface to guide the inserted pipe; an operating part is located above the curved pipe support and is attached to the rotating frame in a manner rotatable by means of a second rotating shaft; and an operating lever is attached to one side of the operating part to control whether the operating part is rotated.

[0017] The guide groove is formed on a portion of the outer circumferential surface of the curved tube support, and an external gear is formed on the outer circumferential surface where the guide groove is not formed.

[0018] The operating part consists of a first and a second operating plate that are integrally formed by being connected by a second connecting pin in a manner that creates a space between them. An operating latch that rotates by means of a third rotating shaft and whose end engages with an external gear of the curved tube support is provided between the first and the second operating plates, as well as an elastic component that gives the operating latch elasticity.

[0019] Furthermore, the technical feature of the present invention is that the central angle between the external gear and the next gear is 15 degrees.

[0020] Furthermore, the technical feature of the present invention is that the curved pipe support includes: a support sill; a section formed on one side of the guide groove for supporting the end of the inserted pipe; and a partially cut portion formed on the upper side of the guide groove where the support sill is located.

[0021] Beneficial effects

[0022] Through the configuration described above,

[0023] Each time the operator presses the operating lever, the operating latch engages with the external gear, rotating the bending pipe support by a set angle. When the operating lever is lifted, the gear engagement is released and the pipe is ready to engage again. This allows for easy operation of the operating lever while maintaining a consistent bending angle, thus improving bending workability compared to existing methods.

[0024] Furthermore, compared to existing pipe bending devices, it can be manufactured in a smaller and lighter manner, and is easy to move and carry in a vehicle, thus achieving the effect of easily taking out the bending device and performing pipe bending operations when needed. Attached Figure Description

[0025] Figure 1 This is a schematic diagram illustrating the state in which the operating part of the bending device of the present invention is opened rearward to the first upper connecting pin.

[0026] Figure 2 Yes Figure 1 A schematic diagram illustrating the opposite side of the state.

[0027] Figure 3 Yes Figure 1 A schematic diagram illustrating the internal structure under the given conditions.

[0028] Figure 4 as well as Figure 5 This is a schematic diagram illustrating the working status of the operating latches and external gears as the operation progresses.

[0029] Explanation of reference numerals in the attached figures

[0030] 10: Support platform 20: Support frame

[0031] 30: Rotating frame 30a, 30b: First and second rotating frame plates

[0032] 35: First connecting pin

[0033] 40: Bending pipe support

[0034] 41: Guide groove; 415: Cutting section

[0035] 42: Shelving section; 425: Additional cutting section

[0036] 43: External gear; 47: Handle

[0037] 50: Operation section 50a, 50b: First and second operation panels

[0038] 51: Installation part; 55: Second connecting pin

[0039] 60: Control lever

[0040] 70: Operating latch 71: Center section

[0041] 72: Occlusal region 73: Interlocking region

[0042] 80: Flexible Components

[0043] S1: First rotating shaft; S2: Second rotating shaft

[0044] S3: Third Rotational Axis Detailed Implementation

[0045] The manual pipe bending device according to the present invention will now be described in more detail.

[0046] The manual pipe bending device according to the present invention is used on the ground and includes: a support platform 10 in contact with the ground; a support frame 20 connected to the support platform; a rotating frame 30 connected to the support frame; a bending pipe support 40 and an operating part 50 connected to the rotating frame; and an operating lever 60 connected to the operating part, which rotates the operating part up and down.

[0047] The support frame 20 supports the rotating frame 30, and is connected to one side of the support platform while leaving the side of the support platform without the support frame connected open, thereby providing space for the removal of the bent pipe.

[0048] Furthermore, the support platform 10 is equipped with guide rollers R for stably supporting the pipe inserted for bending, together with the support sill for bending pipe support described later, while guiding the pipe towards the bending pipe support during the bending process.

[0049] Next, please refer to Figures 1 to 3 The rotating frame 30 will be described. The rotating frame is composed of first and second rotating frame plates 30a and 30b that are integrally formed by being connected by a first connecting pin 35 in a manner that creates a space between them.

[0050] That is, the first and second rotating frame plates 30a and 30b are connected by a first connecting pin 35 in a way that forms a space between them. The first connecting pin 35 consists of a first lower connecting pin 35b provided on the lower part of the rotating frame and a first upper connecting pin 35a provided on the upper part of the rotating frame. In order to maintain a stable connection, the first upper and lower connecting pins are preferably located diagonally opposite each other.

[0051] Furthermore, the first upper connecting pin 35a is located behind the operating part 35, thereby controlling the rearward rotation angle of the operating part. That is, when the operating part is opened rearward, the first upper connecting pin can be used to prevent it from being opened excessively.

[0052] Furthermore, the bending pipe support 40 is coupled between the first and second rotating frame plates 30a and 30b in a manner that allows rotation via the first rotating shaft S1. The construction of the bending pipe support and the operating latch described later has unique technical features compared to existing manual pipe bending devices.

[0053] The bending pipe support 40 according to the present invention is the same as the existing manual pipe bending device, forming a guide groove for guiding the inserted pipe, but is characterized in that an external gear 43 is formed on the outer peripheral surface of the bending pipe support in addition to the guide groove.

[0054] That is, a guide groove 41 is formed on the outer circumferential surface of the bending pipe support, but only on a portion of the outer circumferential surface, while an external gear 43 is formed on the outer circumferential surface where the guide groove is not formed. In addition, the external gear is preferably designed such that the center angle between the gear and the next gear is 15 degrees, because the pipe can be rotated 15 degrees each time the bending pipe support is rotated by pressing the operating lever, so that the pipe can be bent 90 degrees by performing 6 identical operations.

[0055] Next, according to the invention, the operating part 50 is rotatably coupled to the rotating frame 30 by means of the second rotating shaft S2. The operating part 50 is coupled with the operating lever 60, so that when the operator rotates forward by pressing the operating lever downward, the bent pipe support is rotated by the operating latch.

[0056] The operating part 50 is composed of first and second operating plates 50a and 50b that are connected by a second connecting pin 55 in a spaced manner and integrally formed, and an operating latch 70 that rotates by means of a third rotating shaft S3 and whose end engages with the external gear of the curved tube support is connected between the first and second operating plates.

[0057] See Figure 3 The operating latch 70 is given an elastic force during rotation by means of an elastic component 80, the elastic component 80 including: a coil portion 81 wound around a third rotating shaft; a first fixing portion 82 connected to and fastened to the operating latch 70 at one end of the coil portion; and a second fixing portion 83 connected to and fastened to the second operating plate 50b at the other end of the coil portion.

[0058] The operating latch 70 includes: a central portion 71, which is coupled to a third rotating shaft S3; an engaging portion 72, which is formed to one side of the central portion and whose end engages with an external gear 43; and a locking portion 73, which is formed to the other side of the central portion and whose forward rotation of the operating latch is controlled by means of a second connecting pin 55. That is, by locking the locking portion 73 to the second connecting pin 55, the force by which the operating latch is intended to rotate forward by means of the elastic component 80 can be controlled.

[0059] Furthermore, the forward rotation of the operating latch can also be controlled by adding components other than the second connecting pin 55.

[0060] Furthermore, a mounting part 51 for mounting the operating lever 60 is provided on the upper part between the first and second operating plates. This allows the operating lever to be connected to the operating part by inserting it into the mounting part, and then the operating lever 60 to be pressed downward to rotate it forward. This causes the bending tube support 40 to rotate forward and perform bending operations in conjunction with the bending operations. After the bending operations are completed, the operating lever 60 can be separated and stored.

[0061] To make it easier for operators to press the operating lever downwards while it is inserted into the mounting part, the mounting part 51 is preferably attached to the operating plate with its upper part tilted forward between the first and second operating plates, rather than being attached horizontally to the operating plate. This will help improve the convenience of bending operations.

[0062] Next, for the external gear 43 formed on the outer peripheral surface of the curved tube support, the inclined surfaces of the gear are not formed with the same degree of inclination, but rather with the gear surface 43A facing forward gently inclined while the gear surface 43B on the other side rapidly inclinates.

[0063] This allows operators to more easily press the control lever during bending operations, and also allows the control latch to easily move to the next adjacent gear after one pipe bending operation for the next bending operation.

[0064] Next, a support sill 42 is provided on one side of the guide groove 41 of the bending pipe support for supporting the end of the pipe inserted into the bending device along the guide groove, and it is preferable to form a partially cut portion 415 on the upper side of the guide groove where the support sill 42 is located. This configuration is intended to allow the pipe to be easily detached from the support sill after the bending operation is completed.

[0065] For the same reason, an additional cut 425 is also formed on a portion of the support curb to cut off a portion of the end of the support curb. This is also used to create a space that allows the pipe to be easily removed after bending, so as to facilitate the removal of the pipe.

[0066] In addition, a handle 37 is provided on the outer peripheral surface of the support 42 so that the operator can hold it and rotate the bending pipe support in a specific direction when the bending operation begins and ends.

[0067] Next, the operation of the bending device according to the present invention, configured as described above, will be explained.

[0068] First refer to Figure 4 By holding handle 47 and pressing it downwards, the curved tube support can be rotated to the rear side, so that the resting sill 42 is positioned to rest the end of the inserted tube.

[0069] In the case described above, in order to rotate rearward without interference from the operating latch 70, it is advisable to also lift the operating part 50 rearward. At this time, the rearward rotation angle of the operating part 50 will be limited by the first upper connecting pin 35a (see...). Figure 4 [A]).

[0070] like Figure 4 As shown in [A], after pressing the handle 47 downward to enter the preparation state where the pipe can be placed on the support, the operator inserts the pipe along the guide roller R into the side of the bending pipe support, and the pipe is guided by the guide groove 41 so that the end of the pipe is placed on the support 42, thus completing the preparation state before the bending operation.

[0071] Next, the workers... Figure 4 As shown in [B], the operating lever 60 is inserted into the mounting portion 51 of the operating part, and the operating lever and the operating part are rotated downwards by a specific angle, thereby entering the state where the engagement portion 72 of the operating latch 70 engages with the external gear 43.

[0072] In the state described above, such as Figure 4 As shown in [C], when the operator presses the operating lever 60 down further, the bending pipe support will rotate in the state where the meshing part 72 is engaged with the external gear 43, and the pipe will bend to an angle corresponding to the rotation angle.

[0073] Next, as Figure 5 As shown in [A], the operator raises the operating lever and operating part to a specific angle and contacts the operating latch 70 to engage with the external gear 43. At this time, the engaging part 72 of the operating latch will move to the next external gear by means of the elastic component 80, and as... Figure 5 As shown in [B], when the operating lever and operating part are pressed again, the operating latch 70 will enter the engagement state of the next external gear.

[0074] Next, as Figure 5 As shown in [C], the operator will press down on the operating lever and the operating part again, thereby allowing the bending tube support to rotate by the same angle as described in the previous step while the operating latch is engaged with the next external gear, thus bending the tube to an angle corresponding to the rotation angle.

[0075] The pipe can be bent by repeating the actions described above.

[0076] At this point, by forming an external gear with a central angle of 15 degrees between the outer gear and the next external gear on the outer circumferential surface of the bent pipe support, the pipe can be bent to 90 degrees by repeating the above action 6 times.

[0077] Next, after bending the pipe to the required bending angle, the operator will separate the operating lever 60 from the operating part 50 and lift the operating part 50 backward and rotate it to the first upper connecting pin 35a, thereby completely releasing the engagement state of the operating latch relative to the external gear.

[0078] Next, as the operator holds the handle and gradually moves it upwards due to the rotation of the bending tube support during the bending process, and then rotates it downwards (at this point, it will enter the...) Figure 4 (As shown in [A]), the bending support will also rotate along with it, and in the process the bent pipe can be removed from the bending device.

[0079] At this time, because of the cut portion 415 formed on the guide groove and the additional cut portion 425 formed on the resting sill, the bent pipe can be passed through the guide groove and the resting sill more easily and removed.

[0080] In the above description of the present invention, the description mainly focuses on a manual pipe bending device with a specific shape, structure and configuration, with reference to the accompanying drawings. However, the present invention can be modified, altered and replaced in various ways by those skilled in the art, and such modifications, alterations and replacements as described above should be interpreted as being included within the protection scope of the present invention.

Claims

1. A manual pipe bending device that improves the convenience of bending operations, characterized in that, include: Support platform (10) is located on the ground; A support frame (20) is attached to one side of the support platform (10); The rotating frame (30) is rotatably connected to one side of the support frame (20), and is integrally formed by connecting the first and second rotating frame plates (30a, 30b) in a spaced manner through the first connecting pin (35); The curved pipe support (40) is connected to the rotating frame (30) between the first and second rotating frame plates (30a, 30b) in a manner that allows it to rotate via the first rotating shaft (S1), and a guide groove (41) is formed on its outer peripheral surface to guide the inserted pipe. An operating part (50), located on the upper part of the curved tube support (40), is coupled to the rotating frame (30) in a manner that allows it to rotate via a second rotating shaft (S2); and, The operating lever (60) is attached to one side of the operating part (50) to control whether the operating part (50) rotates; An external gear (43) is formed on the outer peripheral surface of the curved tube support (40). The operating part (50) is composed of a first and a second operating plate (50a, 50b) that are connected by a second connecting pin (55) and integrally formed in a way that forms a space between them. An operating latch (70) that rotates by means of a third rotating shaft (S3) and whose end engages with an external gear (43) of the curved tube support (40) is provided between the first and the second operating plates (50a, 50b), and an elastic component (80) that gives elasticity to the operating latch (70). The operating latch (70) includes: a central portion (71) for engagement with a third rotating shaft (S3); an engagement portion (72) formed on one side of the central portion (71) and engaged with an external gear (43); and a snap-fit ​​portion (73) formed on the other side of the central portion (71) and controlling the front rotation angle of the operating latch (70) by means of a second connecting pin (55).

2. The manual pipe bending device according to claim 1, which improves the convenience of bending operations, is characterized in that: The external gear (43) has one side of the gear in a gently inclined manner, while the other side of the gear is in a rapidly inclined manner.

3. The manual pipe bending device according to claim 1, which improves the convenience of bending operations, is characterized in that: The central angle between the external gear (43) and the next gear is 15 degrees.

4. The manual pipe bending device that improves the convenience of bending operations according to claim 1, characterized in that: The first connecting pin (35) that connects the first and second rotating frame plates (30a, 30b) consists of a first lower connecting pin (35b) provided on the lower part of the rotating frame (30) and a first upper connecting pin (35a) provided on the upper part of the rotating frame (30). The first upper connecting pin (35a) is located behind the operating part (50) so as to control the rear rotation angle of the operating part (50).

5. The manual pipe bending device that improves the convenience of bending operations according to claim 1, characterized in that: The curved pipe support (40) includes a resting sill (42) formed on one side of the guide groove (41) and for resting the inserted pipe end, and a partially cut-out portion (415) formed on the upper side of the guide groove (41) where the resting sill (42) is located.

6. The manual pipe bending device according to claim 5, which improves the convenience of bending operations, is characterized in that: An additional cut (425) is also formed at the end of the support (42).

7. The manual pipe bending device according to claim 5, which improves the convenience of bending operations, is characterized in that: The support sill (42) is equipped with a handle (47) for rotating the curved tube support (40).

8. The manual pipe bending device according to claim 1, which improves the convenience of bending operations, is characterized in that: The operating lever (60) can be detached from the operating section (50).

9. The manual pipe bending device according to claim 1, which improves the convenience of bending operations, is characterized in that: The support platform (10) is equipped with guide rollers (R) for stably supporting the tube inserted for bending.

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