TWI648138B - Pipe cutting device - Google Patents

Abstract

The invention includes a hand pliers, a blade and a control button. The manual clamp has an arcuate rail, a replacement opening, a shaft hole and a shaft member; the curved rail has an inner groove. The blade is disposed in the manual clamp and has a blade shaft hole and a control hole, and the shaft member passes through the blade shaft hole to pivot the blade to the shaft hole. The control button is disposed on the curved rail and has a blade limiting portion and a blocking portion; the blade limiting portion is inserted into the control hole. When the control button is moved to the corresponding inner groove, it can be lifted up and retracted from the control hole, and the retaining portion is stopped in the inner groove, and then the shaft member is pulled away from the shaft hole and the blade shaft hole, and the blade can be pumped from the replacement opening. The new blade can be replaced by reverse operation. Therefore, in this case, the blade can be replaced without removing the shell, and the blade can be quickly moved to the desired position.

Description

Pipe cutting device

The invention relates to a pipe cutting device, in particular to a pipe cutting device which can replace a blade without removing the shell and can quickly move the blade to a desired position.

The traditional pipe cutting device (for example, pipe cutting pliers, not shown), the blade needs to be completely disassembled when the blade is replaced, and the center pin is pulled out and the spring of the blade is also separated to take the blade out. . On the other hand, if a new blade is to be loaded, the above action is reversed, so that the entire blade replacement operation is troublesome. Secondly, the conventional pipe cutting device can only advance the blade in a one-frame manner when feeding, and cannot move at a time, which also causes inconvenience in use. In view of this, it is necessary to develop a technique that can solve the above disadvantages.

It is an object of the present invention to provide a pipe cutting device which has the advantages of replacing the blade without removing the casing and moving the blade to a desired position. In particular, the problem to be solved by the present invention is that conventionally, the outer casing needs to be disassembled when it is replaced, and the central pin is pulled out and the spring that hooks the blade is also separated to take out the blade. On the other hand, if a new blade is to be loaded, the above action is reversed, so that the entire blade replacement operation is troublesome. Secondly, when the traditional pipe cutting device is fed, the blade can only be pushed one by one, and cannot be moved at a time, which also causes inconvenience in use and the like. The technical means for solving the above problems is to provide a pipe cutting device, comprising: a manual clamp having a casing and a movable grip; the casing having an arcuate rail, a replacement opening, a shaft hole and a shaft member; The curved rail has a first end, a second end and an inner groove, the inner groove is adjacent to the first end; the movable grip is pivotally connected to the housing; a blade is disposed on the The inside of the housing has a blade shaft hole and a control hole, the shaft member passes through the blade shaft hole for pivoting the blade to the shaft hole; a control button is disposed on the curved rail; The control button has a head, a rod portion, a blade limiting portion and a blocking portion; the head portion is exposed on the curved rail; the rod portion is inserted into the curved rail, and the blade limiting portion is inserted Provided in the control hole; the blocking portion extends laterally from the rod portion and is interposed between the head portion and the blade restricting portion; thereby, when the control button is moved to the first end, An up position and a down position; when in the up position, the block enters the inner groove and is limited to the first End, the blade limiting portion is pulled away from the control hole, and when the shaft member is pulled away from the shaft hole and the blade shaft hole, the blade can be pulled away from the replacement opening; when in the depressed position; the blocking portion The inner recess is retracted, the blade restricting portion is inserted into the control hole, the shaft member is inserted into the shaft hole and the blade shaft hole, and the blade can be fixed to the housing. The above objects and advantages of the present invention will be readily understood from the following detailed description of the preferred embodiments illustrated herein. The invention will be described in detail in the following examples in conjunction with the drawings:

Referring to Figures 1, 2A, 3A and 5, the present invention is a tubular device comprising a hand pliers 10, a blade 20 and a control button 30. The manual clamp 10 is provided with a casing 10A and a movable grip 10B. The casing 10A has an arcuate rail 11, a replacement opening 12, a shaft hole 13 and a shaft member 14. The curved rail 11 has a first end 111, a second end 112 and an inner recess 113 (see FIGS. 7B, 8A and 8B). The inner recess 113 is adjacent to the first end 111; The movable grip 10B is pivotally connected to the housing 10A. The blade 20 is disposed in the housing 10A and has a blade shaft hole 21 and a control hole 22, and the shaft member 14 passes through the blade shaft hole 21 for pivoting the blade 20 to the blade 20 Shaft hole 13. The control button 30 is disposed on the curved rail 11; the control button 30 has a head 31, a rod portion 32, a blade limiting portion 33 and a blocking portion 34; the head portion 31 is exposed to the The arcuate rail 11 is inserted into the arcuate rail 11 , and the blade limiting portion 33 is inserted into the control hole 22 . The retaining portion 34 extends laterally from the stem portion 22 and Between the head 31 and the blade restricting portion 33. Thereby, when the control button 30 is moved to the first end 111, it has an up position P1 and a lower pressure position P2; when in the up position P1 (see FIG. 8A), the block 34 enters The inner groove 113 is restricted to the first end, the blade restricting portion 33 is pulled away from the control hole 22, and when the shaft member 14 is pulled away from the shaft hole 13 and the blade shaft hole 21, the blade 20 can be The replacement opening 12 is removed from the replacement opening (as shown in Fig. 2B). When in the depressed position P2 (see FIG. 8B); the stop 34 is retracted from the inner recess 113, the blade restricting portion 33 is inserted into the control hole 22, the shaft member 14 is inserted into the shaft hole 13 and the blade The shaft hole 21, the blade 20 can be fixed to the housing 10A. In practice, the housing 10A has a working opening 15 adjacent to the replacement opening 12, and when the housing 10A is opposite to the movable grip 10B, the working opening 15 is for cutting the blade 20 (usually Is to cut the pipe). The manual forceps 10 further has a one-way brake mechanism 10C, which includes a one-way stop member 16 and a torsion spring 17 fixed to the housing 10A at one end and fixed to the single end at the other end. To the stopper 16. The blade 20 corresponds to the one-way stop member 16 and has a one-way brake toothing 23 for the blade 20 to be unidirectionally engaged with the one-way stop member 16. Referring to FIGS. 5 and 6, the control button 30 can further include an elastic member 35; the rod portion 32 corresponds to the elastic member 35 and has a ring groove 321; the elastic member 35 is fixed at one end to the housing 10A. And the other end is fixed to the ring groove 321 . Thereby, when the control button 30 is located at the pressing position P2, the control button 30 can be pushed to move in the curved rail 11 (as shown in FIG. 7A, at the first end 111 and the second end) Moving between 112), the blade 20 can be quickly moved in one direction in the working opening 15 (as shown in FIG. 4, the elastic member 35 is synchronously stretched, assuming rapid movement to a to-be-cut position PA, The only surface is not shown, and the control knob 30 is released. The blade 20 is pulled by the elastic member 35, and the one-way toothed portion 23 is blocked by the one-way stopper 16. (Refer to the card positioning relationship in Figure 3A), but can be positioned. Referring to FIG. 3A, the present invention further has a release link 40 having a link shaft 41, a release end portion 42 and a passive end portion 43. The link shaft 41 is provided for the release link 40. Rotating is provided on the movable grip 10B, and the releasing end portion 42 corresponds to the one-way stopper 16. The movable grip 10B corresponds to the passive end portion 43 and has a reverse pusher portion 18. Thereby, when the movable grip 10B is pulled away from the reverse direction of the housing 10A (as shown in FIG. 3B), the reverse push portion 18 is upwardly abutted against the passive end portion 43, and the release link 40 is attached. Rotating the connecting rod shaft 41 on the movable grip 10B, the releasing end portion 42 presses the one-way stopper 16 downward (compressing the torsion spring 17 to move to a release position PM), the one-way When the brake tooth portion 23 is disengaged from the one-way stopper 16, the elastic member 35 pulls the blade 20 to be reset. And when the movable grip 10B is released (returning to the state as shown in FIG. 3A), the torsion spring 17 pushes the one-way stopper 16 to be resetly engaged with the one-way brake tooth portion 23 (known one-way positioning device) The technical principle is known to the industry and will not be discussed. The focus of the present invention is that when the blade 20 requires a tool change, the following two actions can be achieved: [a] The control button 30 is first returned to the first end 111 of the curved track (see section 7A and 7B), the head 31 is pulled up (to the upper shift position P1) (as shown in FIG. 8A), and the blade restricting portion 33 is retracted from the control hole 22. [b] Pull out the shaft member 14. [c] The blade 20 is adapted to replace the opening 12 and is not restricted by the blade restraining portion 33 and the shaft member 14, and the blade 20 can be pulled out from the replacement opening 12. When the (new) blade 20 is to be inserted, the blade 20 is first inserted into the housing 10A from the replacement opening 12, and the shaft member 14 is inserted into the blade shaft hole 21 and the shaft hole 13, preliminary The blade 20 is first fixed, and the head 31 is pressed down to the pressing position P2. The blade restricting portion 33 is inserted into the control hole 22 to complete the tool changing operation, which is very convenient. The advantages and functions of the present invention are as follows: [1] The blade can be replaced without removing the shell. First, the control button is returned to the first end of the arc-shaped rail, and then pulled up to the up-shifting position, the blade limiting portion is retracted from the control hole, and the shaft member is pulled out, and the replacement opening can be removed from the opening. Replace the blade. It is not necessary to disassemble the housing at all. Therefore, the blade can be replaced without removing the shell. [2] Quickly move the blade to the desired position. When the control button is in the depressed position, the control button can be pushed to move in the curved rail, and the blade is driven to move in a one-way direction to the positioning in the working opening. Therefore, the blade can be quickly moved to the desired position. The present invention has been described in detail with reference to the preferred embodiments of the present invention, without departing from the spirit and scope of the invention.

10‧‧‧Manual pliers

10A‧‧‧shell

10B‧‧‧ Activity grip

10C‧‧‧One-way brake mechanism

11‧‧‧ Curved rail

111‧‧‧ first end

112‧‧‧ second end

113‧‧‧ Inside groove

12‧‧‧Replacement opening

13‧‧‧Axis hole

14‧‧‧ shaft parts

15‧‧‧Work opening

16‧‧‧One-way stop

17‧‧‧Torque spring

  18‧‧‧Reverse Promotion Department

20‧‧‧blade

21‧‧‧blade hole

22‧‧‧Control hole

23‧‧‧One-way brake tooth

30‧‧‧Control button

31‧‧‧ head

32‧‧‧ pole

321‧‧‧ ring groove

33‧‧‧ Blade Restriction Department

34‧‧ ‧ blocking

35‧‧‧Flexible parts

40‧‧‧Remove the connecting rod

41‧‧‧Connector shaft

42‧‧‧Remove the end

43‧‧‧ Passive end

P1‧‧‧Upshift position

P2‧‧‧down position

PA‧‧‧ to be cut position

PM‧‧‧ release position

1 is a schematic view of the decomposition of the present invention, FIG. 2A is a schematic view of the appearance of the present invention, and FIG. 2B is a schematic view of the present invention, which can be pulled out of the blade without removing the casing. FIG. 3A is a correspondence diagram of the components of the present invention. FIG. 3B is a schematic diagram showing the action correspondence of some components of FIG. 3A. FIG. 4 is a schematic diagram of the blade moving to the positioning of the present invention. FIG. 5 is a schematic diagram of the control button of the present invention. FIG. 7A is a schematic view showing the movement of the control knob of the present invention in a curved rail. FIG. 7B is a schematic diagram showing the correspondence between the inner groove and the curved rail of the present invention. FIG. 8A is a control knob of the present invention which is moved upward. Figure 8B is a schematic view of the control knob of the present invention in a depressed position

Claims (2)

A pipe cutting device includes: a manual clamp having a casing and a movable grip; the casing has an arcuate rail, a replacement opening, a shaft hole and a shaft member; the curved rail has a first a second end and an inner groove adjacent to the first end; the movable grip is pivotally connected to the housing; a blade is disposed in the housing and has a blade shaft a hole and a control hole, the shaft member passes through the blade shaft hole for pivoting the blade to the shaft hole; a control button is disposed on the arc track; the control button has a head, a rod portion, a blade limiting portion and a blocking portion; the head portion is exposed to the arc-shaped rail; the rod portion is inserted into the arc-shaped rail, and the blade limiting portion is inserted into the control hole; a portion extending laterally from the stem portion and interposed between the head portion and the blade restraining portion; thereby, when the control button is moved to the first end, the portion has an up position and a lower pressure position When in the up position, the blocking portion enters the inner groove and is restricted to the first end, and the blade restricting portion is pulled away from the control hole, When the shaft member is pulled away from the shaft hole and the blade shaft hole, the blade is detachable from the replacement opening; when in the depressed position; the stop is retracted from the inner groove, and the blade restriction portion is inserted The control hole, the shaft member is inserted into the shaft hole and the blade shaft hole, the blade can be fixed to the housing; wherein the housing has a working opening adjacent to the replacement opening, when the housing is The movable grip is relatively clamped, and the working opening is for cutting by the blade. The pipe cutting device of claim 1, wherein: The manual clamp further has a one-way brake mechanism including a one-way stop and a torsion spring; the torsion spring is fixed to the housing at one end and fixed to the one-way stop at the other end; The blade corresponds to the one-way stopper, and has a one-way brake tooth portion for the blade to be unidirectionally engaged with the one-way stopper; the control button includes an elastic member; the rod portion corresponds to the elastic member And having a ring groove; the elastic member is fixed at one end to the casing, and the other end is fixed to the ring groove; thereby, when the control button is located at the pressing position, the control button can be pushed to the arc Moving in the rail, the blade can be driven to move in one direction quickly in the working opening. When the control button is released, the blade is pulled by the elastic member, and the one-way toothing portion is blocked by the one-way gear. The stop is blocked and can be positioned; and when the one-way brake mechanism releases the blade, the elastic member is transmitted through the shaft to pull the blade to reset.