JPH0510595Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an improvement in the locking mechanism of the handle of long-handled shears used for pruning tall branches, etc.

[Prior art]

When pruning tall branches, etc., pruning shears are used, which have a shears attached to the tip of a long handle and are configured so that the shears can be opened and closed using a control lever attached to the hand. Pruning shears have a long handle, which makes them bulky when carrying or storing them.
Conventionally, in order to eliminate this drawback, a joint with a screw or the like is formed in the middle of the handle, and the handle can be divided into two parts if necessary. The handle is made to be expandable and retractable using two aluminum pipes, and the locking is done by inserting a pin into a hole formed in both pipes. This configuration is used.

[Problem that the invention attempts to solve]

However, in the case of long-handled scissors with a split handle, it is necessary to perform the same work on the connecting shaft at the same time as the handle is assembled and separated. There is a drawback that the work is very troublesome, and if the handle is configured to be extendable, it is necessary to precisely match the two holes formed in the outer pipe and the inner pipe when locking the handle. However, there is an operational inconvenience in that the locking operation cannot be performed as desired.

This invention seeks to eliminate such drawbacks found in conventional designs.

(Structure) [Means and effects for solving the problem] This invention has a structure in which the scissors part 2 is arranged at one end of the long handle 4, and the operating lever for opening and closing the scissor part is arranged at the other end. In the long-handled scissors, the long handle has an outer pipe and an inner pipe so as to be expandable and retractable, and notches are formed in each of the outer pipe and the inner pipe, and when the long handle is locked, spring bias is applied to each notch. This is done by fitting in the locked engagement part, while the locking state can be released by pushing out the operating lever. The purpose is to allow the length to be adjusted in stages, and at the same time to prevent the bag from becoming bulky when carried.

〔Example〕

An embodiment of this invention will be described based on the drawings. As shown in FIGS. 1 to 6, the long handle scissors body 1 has a long handle 4 with a scissors part 2 at one end and a scissors part 2 at the other end. In addition, the long handle 4 and the connecting shaft 11 inserted into the long handle 4 are configured to be extendable and retractable, and when the operating lever 3 is pushed forward, Therefore, the locking position of the handle 4 can be changed in two steps.

That is, as shown in FIGS. 1 to 3 and 5 to 6, the long handle 4 is telescopically formed with an outer pipe 5 and an inner pipe 6 inserted into the inner side of the outer pipe 5. In addition, the outer pipe 5 and the inner pipe 6 are each formed with notches 9 and 10 each having a shape into which an engaging part 7 formed of a rod-like piece can be inserted. Therefore, by aligning the notch 9 of the outer pipe 5 with the notch 10 of the inner pipe 6 and then fitting the engaging part 7, the elongated state of the long handle 4 can be locked. -ing Furthermore, when the engaging portion 7 is assembled to the outer pipe 5, it is biased toward the pipe by a spring 8, so that the notch 9 in the outer pipe 5 and the notch 9 in the inner pipe 6 When the notches 10 are aligned, the extended/contracted state of the long handle 4 is automatically locked.

In addition, although the above is a case in which the locking of the long handle 4 is performed by the engaging part 7 formed with a rod-shaped piece, another embodiment of the engaging part 7 is as follows. As shown in FIG. 7, it is also possible to have a configuration in which a protruding piece with a rounded tip is attached to the lower part of the spring 8, or as shown in FIG. 8, the spring 8 itself can be bent and formed. It is also possible to form a structure in which a protrusion is formed.

On the other hand, as shown in FIGS. 2 to 4, the connecting shaft 11 includes a pipe 13 and a wire 14 inserted into the pipe 13. Hole 16 passing through 14
The block piece 12 has a connecting hole 15 with the operating lever 3 at its front end, and the wire 14 has a hole formed in the center of the block piece 12. 16 is inserted into the pipe 13 in the form of a penetrating shape, and a connecting hole 17 for connecting with the scissors 2 is provided at the tip of the pipe 13.
is formed, and a hook portion 19 for engaging with a latch portion 18 attached to the operating lever 3 is attached to the front end portion. Therefore, the connecting shaft 11 is
It is expandable and at the same time can be contracted to create a hook part 19.
When the connecting shaft 11 is engaged with the latching portion 18, the connecting shaft 11 can be engaged in a short state, and when it is extended to the maximum length, the hook portion 19 can be attached to the rear end surface of the block piece 12. The base is in contact with the
This makes it possible to transmit tension in the stretched state. Moreover, the latch portion 18 attached to the operating lever 3 is
As shown in the figure and FIG. 3, when the operating lever 3 is pushed forward while being biased upward by the spring 20,
As a result of being configured to rotate downward when pushed by the protrusion 21, the engagement in the contracted state of the connecting shaft 11 can be released by pushing the operating lever 3 forward. It's getting old.

The handle 4 and the connecting shaft 11 in the long-handled scissors main body 1 according to this invention have the above-mentioned configurations, but when assembling them, the entire connecting shaft 11 is inserted into the handle 4, and then the outer pipe 5 is inserted. A grip handle 22 is attached to the end, and the operating lever 3 is rotatably attached to the handle 22, while a fixed blade of the scissors part 2 is attached to the end of the inner pipe, and a spring 23 on the connecting shaft 11 is attached. This is done by hooking the inner pipe 6 to the end thereof, and finally connecting the end of the connecting shaft 11 to the movable blade of the scissor part 2.

〔effect〕

(Effect of the invention) The locking mechanism of the handle of the long-handled scissors according to this invention has the above-mentioned configuration, and the length of the handle 4 of the long-handled scissors can be selected in two stages, and at the same time, the length of the handle 4 can be selected in two stages, and at the same time, the length of the handle 4 of the long-handled scissors can be selected in two stages. This has the advantage that it can be performed by an extremely simple operation of moving the operating lever 3 forward.

In other words, the long-handled scissors with the handle 4 extended can be used as is because the outer pipe 5 and the inner pipe 6 are fixed by the spring-biased engagement part 7. However, by sending the operation lever 3 forward, the pipe 13 linked thereto moves forward, and the engaging part 7 is pushed upward by its tip, so that the handle part 4 At the same time, when the handle part 4 is shortened and used, by pushing the inner pipe 6 toward the front side, the inner pipe 6 can be compressed. hook part 19;
The latching portion 18 attached to the operating lever 3 is engaged with the operating lever 3, making it possible to use it in a short period of time.

Therefore, the long-handled scissors according to this invention have the advantage that the length can be selected in two stages and can be used according to each work condition, and at the same time, the long-handled scissors, which tend to be bulky, can be made more compact. There is.

[Brief explanation of the drawing]

The attached drawings show one embodiment of this invention, in which Fig. 1 is a front view showing the entire long-handled scissors, Fig. 2 is a cross-sectional view showing the handle 4 in a contracted state, and Fig. 3 is a sectional view showing the state in which the handle part 4 is extended;
The figure is a partially cutaway perspective view showing the configuration of the connecting shaft, and FIG. 5 is a partial perspective view showing the configuration of the locking mechanism of the handle 4.
FIG. 6 is a partially cutaway perspective view showing the long handle 4 in a locked state, and FIGS. 7 and 8 are partially cutaway perspective views showing other embodiments of the locking mechanism in the long handle 4. DESCRIPTION OF SYMBOLS 1... long handle scissors body, 2... scissors part, 3... operation lever, 4... long handle, 5... outer pipe, 6... inner pipe, 7... engaging part, 9... notch part, 10 ……
Notch part.

Claims (1)

[Scope of utility model registration request] In long-handled scissors having a structure in which the scissors part 2 is disposed at one end of the long handle 4 and the operating lever 3 for opening and closing the scissors part 2 is arranged at the other end, the long handle 4 is connected to the outer pipe 5.
and an inner pipe 6, and when the long handle 4 is extended, the notches 9 and 1 formed in the outer pipe 5 and the inner pipe 6, respectively.
0, the engaging portion 7 is biased downward by a spring.
At the same time, when the connecting shaft 11 is brought into a maximum extension state and connected, and when the operating lever 3 is pushed forward, the pipe 13 that interlocks with the operating lever 3
A locking mechanism for a handle in long-handled scissors, characterized in that the locking mechanism for the handle of long-handled scissors is characterized in that the locking mechanism for the handle of long-handled scissors is constructed so that the spring-biased engaging part 7 is pushed upward and the locked state between the outer pipe 5 and the inner pipe 6 is released.