Flexible tree shears
Technical field
The utility model relates to garden tool set, particularly a kind of flexible tree shears.
Background technology
Tree shears is generally used for the branch pruning in gardens or orchard, it generally includes two handles and two shear blade, shear blade is driven to make shear action by handle, the pruning of branch can be completed, but some toughness more greatly or thicker tree shears hit, common tree shears has been difficult to meet the needs sheared, for solving this problem, normally by lengthening of handle to increase moment, improve shearing force, but the tree shears of long handle operation trouble very, and operating radius is large, use inconvenience very, the distribution of shearing force also very unreasonable.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of flexible tree shears.
The utility model solves the technical scheme that its technical problem adopts:
Flexible tree shears, comprise shear blade assembly and shear blade assembly can be driven to make fixed handle and the telescoping handle of shear action, the slip handle that described telescoping handle comprises handle in one and is slidably arranged on interior handle, described fixed handle is connected with telescoping handle by a rod slide mechanism, described rod slide mechanism comprises a connecting rod, described connecting rod one end is hinged on fixed handle, and its other end is hinged on slip handle.
Described slip handle is be set in the tubular structure on interior handle.
Described fixed handle front end is provided with the first free bearing, and described slip handle front end is provided with the second free bearing, and described connecting rod two ends are hinged on the first free bearing, the second free bearing respectively.
Described shear blade assembly comprises the first shear blade, the second shear blade and linking arm, described first shear blade is fixedly installed on fixed handle end, the end of described interior handle and the middle part of the first shear blade are hinged, the middle part of described second shear blade and the middle part of the first shear blade are hinged, described linking arm one end is hinged to the end of the second shear blade, and its other end is hinged on interior handle.
The shearing edge of described shear blade assembly is the curved edge of male-female engagement.
Described fixed handle and telescoping handle end are respectively arranged with Anti-slip cover.
The beneficial effects of the utility model are: flexible tree shears, comprise shear blade assembly and shear blade assembly can be driven to make fixed handle and the telescoping handle of shear action, the slip handle that described telescoping handle comprises handle in one and is slidably arranged on interior handle, described fixed handle is connected with telescoping handle by a rod slide mechanism, described rod slide mechanism comprises a connecting rod, described connecting rod one end is hinged on fixed handle, its other end is hinged on slip handle, because connecting rod is a regular length bar, when fixed handle and telescoping handle open, connecting rod drives slip handle to slide near shear blade assembly direction, shorten the length of telescoping handle, when closed fixed handle and telescoping handle, connecting rod drives slip handle to slide to away from shear blade assembly direction, the length of growth telescoping handle gradually, make shearing moment, shearing force increase gradually, shearing work radius is much smaller than fixed handle tree shears, very easy to use, and shearing force increase gradually, not only manpower can be saved, but also meet the distribution of branch internal shear resistance, shear effect is better, more laborsaving, shear efficiency is higher.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of the utility model when closing;
Fig. 2 is the structural representation of the utility model when opening;
Fig. 3 is the decomposing schematic representation of the utility model telescoping handle;
Fig. 4 is the close-up schematic view of part A in Fig. 2.
Embodiment
Referring to figs. 1 through Fig. 4, Fig. 1 to Fig. 4 is the structural representation of the utility model specific embodiment, as shown in the figure, flexible tree shears, comprise shear blade assembly 1 and shear blade assembly 1 can be driven to make fixed handle 2 and the telescoping handle 3 of shear action, the slip handle 32 that described telescoping handle 3 comprises handle 31 in one and is slidably arranged on interior handle 31, described fixed handle 2 is connected with telescoping handle 3 by a rod slide mechanism, described rod slide mechanism comprises a connecting rod 4, described connecting rod 4 one end is hinged on fixed handle 2, and its other end is hinged on slip handle 32.
As preferably, described slip handle 32, for being set in the tubular structure on interior handle 31, makes described slip handle 32 can reciprocatingly slide along the length direction of interior handle 31; Described fixed handle 2 front end is provided with the first free bearing 41, and described slip handle 32 front end is provided with the second free bearing 42, and described connecting rod 4 two ends are hinged on the first free bearing 41, second free bearing 42 respectively.
When fixed handle 2 and telescoping handle 3 open, connecting rod 4 drives slip handle 32 to slide near shear blade assembly 1 direction, shorten the length of telescoping handle 3, when closed fixed handle 2 and telescoping handle 3, connecting rod 4 drives slip handle 32 to slide to away from shear blade assembly 1 direction, the length of growth telescoping handle 3 gradually, make shearing moment, shearing force increase gradually, shearing work radius is much smaller than fixed handle tree shears, very easy to use, and shearing force increase gradually, not only manpower can be saved, but also meet the distribution of branch internal shear resistance, shear effect is better, more laborsaving, and initial shear speed is far above traditional long handle tree shears, and the labor-saving effect that the later stage shears can be ensured, therefore overall shear rate, shear efficiency is far above traditional long handle tree shears.
As preferably, described shear blade assembly 1 adopts linkage, it comprises the first shear blade 11, second shear blade 12 and linking arm 13, described first shear blade 11 is fixedly installed on fixed handle 2 end, the end of described interior handle 31 and the middle part of the first shear blade 11 are hinged, the middle part of described second shear blade 12 and the middle part of the first shear blade 11 are hinged, described linking arm 13 one end is hinged to the end of the second shear blade 12, its other end is hinged on the end of interior handle 31, and linking arm 13 is positioned at the rear with the pin joint of handle 31 end in the middle part of the first shear blade 11 with the pin joint of interior handle 31 end, make the first shear blade 11, second shear blade 12, interior handle 31 end, linking arm 13 forms a four-bar linkage structure, the subtended angle of the first shear blade 11 and the second shear blade 12 is made to be less than the subtended angle of fixed handle 2 and telescoping handle 3, increase the shearing force of shear blade assembly 1, save manpower, improve the operating efficiency sheared.
As preferably, in the present embodiment, described first shear blade 11, the cutting edge of the second shear blade 12 is the curved edge of male-female engagement, to be adjacent to the branch of round stripe shape, otch is smooth, and when shearing, the share zone increase gradually of the curved edge protruded, shearing resistance also can increase accordingly, the telescoping handle 3 increased gradually with moment of the present utility model coordinates, namely shear when just starting, shearing resistance is little, telescoping handle 3 length is short, operating radius is short, moment is little, the speed sheared can be accelerated, when the angle of shear diminishes gradually, the share zone increase gradually of the curved edge protruded, resistance increases, and now, telescoping handle 3 length, operating radius increases, the corresponding increase of moment, shear rate declines, but reach labour-saving effect, by above-mentioned structure, when the utility model uses, shear rate is higher than traditional fixing long handle tree shears, and labor-saving effect is roughly consistent, greatly improves simple efficiency.
As preferably, described fixed handle 2 and telescoping handle 3 end are respectively arranged with Anti-slip cover 5, prevent staff from sliding, and improve the convenience and reliability that use.
Above better enforcement of the present utility model is illustrated; certainly; the utility model can also adopt form different from the embodiment described above; the equivalent conversion that those of ordinary skill in the art do under the prerequisite without prejudice to spirit of the present invention or change accordingly, all should belong in protection domain of the present utility model.