TWI714456B - Elastic buffer structure of pipe cutter tool - Google Patents

Abstract

The present invention discloses an elastic buffer structure for a pipe cutter knife, which includes a handle with a working space and a roller corresponding to the working space pivoted on the handle, and a screw cap screwed on one end of the handle and away from the working space , A sliding shaft extending through the handle and pivotally connected with a tool part accommodated in the working space, a working rod screwed on the sliding shaft, at least one set of elastic elements arranged on the outer circumference of the working rod, and one set connected to the outer circumference of the handle The knob is assembled on the side and the working rod. With the composition of the above structure, a pre-pressure is selectively applied to the cutter part.

Description

Elastic buffer structure of pipe cutter tool

The invention relates to the technical field related to hand tools, in particular to an elastic buffer structure of a pipe cutter knife.

Press, the structure of the pipe cutter with pre-pressure in the market, please refer to Figures 8 and 9, roughly including a handle 91, one end recessed with a working area 92, and a matching working area 92 set on the handle 91. Arm 93, the working arm 93 symmetrically has two sliding grooves 932, a knife seat 94 movably pivoted between the sliding grooves 932, one end is housed in the working arm 93, and the other end pushes the spring 95 of the knife seat 94, And a cutter 96 pivoted on the cutter holder 94.

The prior art tube cutter uses spring 95 as a means of providing pre-pressure, but its overall structure design has the following shortcomings, such as:

1. The pre-pressure of the previous technology comes from the spring 95, and the strength of the spring 95 comes from its own wire diameter, length and compression, etc. Once the length of the spring 95 is short, it is easy to cause insufficient pre-pressure.

2. The spring 95 of the previous technology adopts the exposed design. In addition to being easily stuck and unsightly, it is also easy to cause elastic fatigue of the spring 95 due to atmospheric erosion. Once stuck or elastically tired, the pre-pressure will inevitably be insufficient to form sufficient pre-force Pressure abuts the pipe B.

3. The knife holder 94 of the previous art can move along the working arm 93 and the sliding groove 932, so there must be a preset gap between the knife holder 94 and the working arm 93. Once When the knife holder 94 is forced, for example, the thrust of the spring spring 95 or the reaction force when the knife 96 pivoted on it abuts against the pipe B, the knife holder 94 will be deflected, which will cause the pipe cutting process to be unsatisfactory. Uneven cut lines are formed on the B incision.

In view of the above-mentioned problems and deficiencies of the prior art, the main purpose of the present invention is to provide an elastic buffer structure for the pipe cutter knife, which can ensure the stability of the pre-pressure and the movement of the knife through the innovative design of the structure.

According to the above objective of the present invention, an elastic buffer structure for a pipe cutter knife is provided, which includes a handle with a working space and a roller corresponding to the working space pivoted on the handle, and a screw lock on one end of the handle and away from the working space The screw cap, a penetrating and extending handle, and pivotally connected with a sliding shaft of the tool part accommodated in the working space, a working rod of the screwed sliding shaft, at least one set of elastic elements arranged on the outer circumference of the working rod, and a set of Knob assembled with the working rod on the outer circumference of the handle. With the composition of the above structure, a pre-pressure is selectively applied to the cutter part.

10: Grip set

12: Grip

121: straight handle

122: Arc part

123: Workspace

124: Straight shaft hole

125: Roller

1242: large diameter section

1244: Trail section

1246: thread section

14: screw cap

142: cover shaft hole

20: Sliding shaft

22: Shaft

222: Rod screw hole

24: Tool Department

30: working rod

32: Threaded part

34: Wing

36: Socket

362: non-circular segment

364: socket screw hole

40: elastic element

50: knob

52: Buttonhole

91: Grip

92: Work Area

93: working arm

932: Chute

94: knife holder

95: spring

96: Tool

A: Locking components

B: take over

Figure 1 is a perspective view of an embodiment of the present invention.

Figure 2 is an exploded schematic view of the embodiment shown in Figure 1.

Figure 3 is a schematic cross-sectional view of the embodiment shown in Figure 1.

Figure 4 is a schematic diagram of the operation of the embodiment of the present invention.

Figure 5 is a schematic cross-sectional view of the actuation of the embodiment of the present invention (1).

Figure 6 is a schematic cross-sectional view of the actuation of the embodiment of the present invention (2).

Figure 7 is a schematic cross-sectional view of the actuation of the embodiment of the present invention (3).

Figure 8 is a schematic diagram of the operation of the prior art embodiment of the pipe cutter.

Figure 9 is an exploded schematic view of partial components of the embodiment shown in Figure 8.

Hereinafter, please refer to related drawings to further describe the embodiments of the elastic buffer structure of the pipe cutter cutter of the present invention. In order to facilitate the understanding of the embodiments of the present invention, the same components are described below with the same symbols.

The elastic buffer structure 10 of the pipe cutter cutter of the present invention, please refer to Figures 1 to 3, which includes a handle set 10, a sliding shaft 20, a working rod 30, at least one elastic element 40, and a knob 50 .

The aforementioned handle set 10 includes a handle 12 and a screw cap 14.

The handle 12 has a straight handle 121, a curved portion 122, a working space 123, a straight shaft hole 124, and a plurality of rollers 125.

The aforementioned straight handle portion 121 and the curved portion 122 are respectively formed at both ends of the handle 12.

The aforementioned working space 123 is formed on the side of the concave curved portion 122.

The aforementioned straight shank shaft hole 124 is formed along the top and bottom of the straight shank 121 along the extending direction of the straight shank 121, and one end is connected to the working space 123. The straight shaft hole 124 has a large-diameter section 1242 and a small-diameter section 1244 at opposite ends, and the large-diameter section 1244 is away from the working space 123 and has a threaded section 1246.

The aforementioned roller 125 is pivoted on the curved portion 122 and accommodated in the working space 123.

The screw cap 14 is screw-locked to the straight shaft hole 124 with a matching threaded section 1246, and has a cap shaft hole 142 penetrating through the top and bottom.

The sliding shaft 20 has a shaft portion 22 and is pivotally connected to a cutter portion 24.

The outer contour of the shaft portion 22 matches the straight shaft hole 124 and can be movably accommodated in the straight shaft hole 124. The shaft portion 22 extends along the extension direction A rod screw hole 222 is formed through the top and bottom.

The cutter part 24 is accommodated in the working space 123.

The working rod 30 has a threaded portion 32, a wing portion 34, and a socket portion 36.

The threaded portion 32 and the socket portion 36 are respectively formed at two ends of the working rod 30. The threaded portion 32 is screwed through the rod screw hole 222 of the sliding shaft 20. The socket portion 36 has a non-circular section 362 and a socket screw hole 364; wherein, the aforementioned non-circular section 362 is formed by recessing at least one concave surface on one side of the socket portion 36. The aforementioned socket screw hole 364 is formed recessed from the section surface of the socket portion 36.

The wing portion 34 is formed on the working rod 30 extending radially outward, and connects the threaded portion 32 and the sleeve portion 36. The wing portion 34 and the sleeve portion 36 are accommodated in the large diameter section 1242 of the straight shaft hole 124 of the handle 12; wherein the free end of the sleeve portion 36 extends through the cover shaft hole 142 of the screw cap 14.

The elastic element 40 is sleeved on the outer peripheral side of the sleeve portion 36 and abuts against the screw cap 14 and the wing portion 34 of the working rod 30 respectively. In implementation, the elastic element can be a disc spring.

The knob 50 is sleeved on the outer peripheral side of the straight handle 121 of the handle 12 and has a button hole 52. The aforementioned button hole 52 provides the non-circular section 362 of the sleeve portion 36 of the working rod 30 to be inserted, so that the sleeve portion 36 and the knob 50 move simultaneously. In implementation, the knob 50 can be screwed with the locking element A and the socket screw hole 364 of the socket part 36 to achieve a reliable assembly.

Therefore, the foregoing is an introduction to the various components and assembly methods of the elastic buffer structure of the pipe cutter knife of a preferred embodiment provided by the present invention. Hereinafter, the operating characteristics of the embodiment of the present invention are introduced as follows.

Please refer to Figs. 4-7. Pass the pipe B through the working space 123, and then rotate the knob 50 to move the working rod 30 together to make the threaded part of the working rod 30 32 interacts with the rod screw hole 222 of the sliding shaft 20 to adjust the length of the working rod 30 extending from the straight shaft hole 124 of the handle 12 to the working space 123 so that the cutter part 24 on the sliding shaft 20 abuts the pipe B.

When the cutter part 24 abuts the pipe B, and then twist the knob 50 to link the working rod 30, the cutter part 24 of the sliding shaft 20 abuts the pipe B and cannot be extended, causing the working rod 30 to move away from the working space 123 instead. And compress the elastic element 40 to form a pre-pressure on the cutter part 24.

At this time, the user can hold the handle 12 of the handle set to rotate along the contour of the pipe A, so that the cutter can cut the pipe A to achieve the purpose of cutting.

The above description is only the preferred embodiments of the present invention. It is intended to clarify the characteristics of the present invention and is not intended to limit the scope of the embodiments of the present invention. Those skilled in the art make equal changes based on the present invention. , And changes well known to those skilled in the art should still fall within the scope of the present invention.

12: Grip

121: straight handle

122: Arc part

123: Workspace

125: Roller

20: Sliding shaft

22: Shaft

24: Tool Department

50: knob

Claims (6)

An elastic buffer structure for a pipe cutter knife, which includes: A handle with a straight handle and a curved portion at both ends, a straight shaft hole formed by the top and bottom of the straight handle, and a working space formed on the curved portion and connected with the straight shaft hole , At least one roller pivoted on the curved part; A screw cap, which is screwed on one end of the straight shaft hole away from the working space; A sliding shaft, one end extends through the straight shank shaft hole, and the other end is pivotally connected to a cutter part and accommodated in the working space; A working rod with a threaded part screwed on the sliding shaft, a socket part extending through the screw cap, and a wing connecting the threaded part and the socket part and selectively abutting on the plane of the straight shaft hole unit; At least one elastic element is sleeved on the outer peripheral side of the socket part, and abuts against the screw cap and the wing part respectively; and A knob is sleeved on the outer peripheral side of the straight handle portion, and is tied and assembled with the sleeve portion. According to the elastic buffer structure of the pipe cutter tool described in the first item of the scope of patent application, the sliding shaft has a rod screw hole formed along the extending direction of the sliding shaft to provide the threaded part of the working rod for screwing. For example, the elastic buffer structure of the pipe cutter tool described in item 1 of the scope of patent application, wherein the opposite ends of the straight shank shaft hole have a large diameter section and a small diameter section respectively, and the large diameter section is far away from the working space, And there is a threaded section for screwing the screw cap. According to the elastic buffer structure of the pipe cutter knife described in the first item of the patent application, the screw cap has a cap shaft hole through which the sleeve part penetrates. As described in the first item of the scope of patent application, the elastic buffer structure of the pipe cutter knife, wherein the socket part has a non-circular section and a socket screw hole recessed from the cut surface of the socket part to match a The locking element is assembled with the knob. The elastic buffer structure of the pipe cutter cutter as described in the first item of the scope of patent application, wherein the elastic element is a disc spring.

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