CN219322949U - Pruning shear installation location structure - Google Patents

Abstract

The utility model discloses a pruning shear mounting and positioning structure which comprises a blade assembly, a gear box and a driving wheel, wherein the driving wheel is rotationally connected in the gear box and is used for driving the blade assembly to move, the driving wheel is provided with a first positioning hole, the gear box is provided with a positioning part, the pruning shear mounting and positioning structure also comprises a positioning piece which penetrates through the first positioning hole and is inserted into the positioning part to complete the positioning of the driving wheel, the blade assembly comprises a tool rest and a plurality of blades, the blades are provided with a first long hole, a second positioning hole which is used for the positioning piece to penetrate through and is matched with the first long hole and the driving wheel, and the tool rest is provided with a third positioning hole which is used for the positioning piece to penetrate through and complete the positioning of the tool rest. The utility model improves the installation efficiency of the blade assembly.

Description

Pruning shear installation location structure

Technical Field

The utility model relates to the technical field of pruning shear installation, in particular to a pruning shear installation positioning structure.

Background

The conventional small handheld pruning shears generally comprise a blade assembly, a plurality of eccentric wheels and a gear, wherein the blade assembly comprises a plurality of blades, elliptical holes are formed in the blades, each eccentric wheel corresponds to one elliptical hole and is arranged in the corresponding elliptical hole, and when the gear drives the eccentric wheel to rotate, each eccentric wheel drives the corresponding blade to reciprocate through the elliptical hole. When the existing pruning shears are used for installing the blade assemblies, if the positions of the eccentric wheels are slightly deviated, the eccentric wheels interfere with the blades, so that the elliptical holes on the blades cannot be sleeved on the corresponding eccentric wheels, namely, the blade assemblies cannot be smoothly installed on the eccentric wheels, so that the existing pruning shears often need to rotate the gears for a plurality of times, and the shape of the eccentric wheels on the gears is matched with the elliptical holes on the blades with a certain probability, and finally the installation of the blade assemblies is completed.

Disclosure of Invention

The utility model provides a pruning shear mounting and positioning structure, which aims to solve the defect of low mounting efficiency of the existing pruning shears when a blade assembly is mounted, and improves the mounting efficiency of the blade assembly.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a pruning shear installation location structure, including the blade subassembly, the gear box, rotate the drive wheel that is connected in the gear box and is used for driving the blade subassembly motion, the blade subassembly includes knife rest and a plurality of blade, the blade is provided with the first slot hole with the drive wheel adaptation, the drive wheel is provided with first locating hole, the gear box is provided with the location portion, pruning shear installation location structure still includes the setting element that is used for passing first locating hole and inserts the location portion in order to accomplish the location of drive wheel, and pull out under the state of location portion and first locating hole after the setting element accomplishes drive wheel and gear box location, first slot hole is just right with the drive wheel adaptation under the blade subassembly direction installation bit.

Through the arrangement, the installation efficiency of the blade assembly is improved. Specifically, when the blade assembly needs to be installed, pass first locating hole and insert the location portion earlier, the fixed position between drive wheel and the gear box this moment, accomplish the location of drive wheel, then pull out the locating piece, blade assembly direction installation position, accomplish the location between the blade promptly, and accomplish the location between blade and the knife rest, and the first slot hole and the drive wheel adaptation of blade this moment, do not need many times to rotate the drive wheel and can directly install the first slot hole on the blade on the drive wheel, at last fix the knife rest on the gear box can accomplish the installation of blade assembly, this application has improved the efficiency of installation blade assembly.

Further, the blade is also provided with a second positioning hole for the positioning piece to pass through and adapt to the first long hole and the driving wheel.

Through the arrangement, the positioning between the blades is facilitated, after the position of the driving wheel is positioned through the positioning piece, the pulled positioning piece is inserted into the second positioning hole, so that the positioning between the blades is realized, the blade assembly is mounted on the driving wheel, the first long hole is directly matched with the driving wheel, and the relative position between the blades does not need to be adjusted.

Further, the tool rest is provided with a third positioning hole for the positioning piece to pass through and complete the positioning of the tool rest.

Through the arrangement, the positioning between the tool rest and the blade is facilitated, and therefore the installation of the tool rest is facilitated. After the locating piece locates the position of the driving wheel, the pulled locating piece is inserted into the second locating hole and penetrates through the third locating hole, so that the position between the blades is limited, the position between the blades and the cutter frame is limited, namely, when the blade assembly is mounted on the driving wheel, and when the first long hole is matched with the driving wheel, the position of the cutter frame on the gear box is relatively fixed, the cutter frame is conveniently fixed on the gear box, and the mounting of the cutter frame assembly is finished.

Further, the driving wheel comprises a gear rotationally connected in the gear box, a first eccentric wheel fixedly connected to one side, far away from the gear box, of the gear, and a second eccentric wheel fixedly connected to one side, far away from the gear, of the first eccentric wheel, the number of blades is two, the first long hole of one blade is matched with the first eccentric wheel, and the first long hole of the other blade is matched with the second eccentric wheel. Through the arrangement, the two blades are arranged up and down, in the installation process of the blade assembly, the first long hole of the blade positioned at the lower side passes through the second eccentric wheel and is sleeved on the first eccentric wheel, the blade positioned at the upper side is directly sleeved on the first eccentric wheel, when the gear drives the first eccentric wheel and the second eccentric wheel to rotate, the first eccentric wheel drives the corresponding blade to reciprocate through the first long hole, and the second eccentric wheel drives the corresponding blade to reciprocate through the second long hole.

Further, when the positioning piece passes through the first positioning hole and is inserted into the positioning part, the circle center of the first eccentric wheel and the circle center of the second eccentric wheel are distributed along the width direction of the blade, the first long hole extends along the width direction of the blade, and when the positioning piece passes through the second positioning hole and the third positioning hole, the first long hole is right opposite to the driving wheel in an adaptation way. Through the arrangement, when the blade assembly is installed, the first long hole of the blade at the lower side is sleeved on the first eccentric wheel through the second eccentric wheel, namely, the blade at the lower side cannot interfere with the second eccentric wheel, and in addition, the first long hole of the blade at the upper side is directly sleeved on the second eccentric wheel.

Further, the first positioning hole is arranged on the gear. Through above-mentioned setting, fix a position the gear through the setting element, and then realize the location to first eccentric wheel and second eccentric wheel, set up first locating hole on the gear to make the degree of depth in first locating hole less, and then reduced the degree of difficulty of processing, on the other hand has also reduced the size of setting element, has reduced the cost.

Further, the number of the first positioning holes is two, the number of the positioning parts is two and corresponds to the number of the first positioning holes one by one, and the positioning part comprises two bolt parts which are used for penetrating through the first positioning holes and inserting the positioning parts, a connecting rod part which is used for fixing the two bolt parts together, and the interval of the bolt parts is matched with the interval of the first positioning holes. Through the setting, conveniently drive the rotation of gear through the setting element to make things convenient for the location of gear, specifically, when positioning the gear, insert two bolt portions in two first locating holes at first, then drive the gear through the setting element and rotate, when the first locating hole of gear rotates to the location portion, insert bolt portion in the location portion. The bolt part passes through the second positioning hole and the third positioning hole, the position between the blade and the knife rest is fixed at the moment, the positioning between the blade and the knife rest is completed, and the first long hole of the blade is matched with the driving wheel at the moment, so that the first long hole of the blade can be directly arranged on the driving wheel.

Further, the locating piece is of an integrated structure. Through the arrangement, the locating piece can be formed by bending one metal rod, so that the locating piece is convenient to manufacture.

Further, the blade assembly further comprises a cover plate, the cover plate is arranged on one side, away from the knife rest, of the blade, and the cover plate, the blade and the knife rest are connected together through a connecting piece. Through above-mentioned setting, the apron is located the blade and is close to the one end of gear box, and after blade subassembly installation was accomplished, apron and knife rest are fixed on the gear box, and apron and knife rest play the effect of protection blade, and the connecting piece is in the same place apron, knife rest, blade, and when gear rotated, the blade reciprocating motion between apron and knife rest.

Further, the blade is provided with a plurality of second long holes extending along the length direction of the blade, the number of the connecting pieces is more than two, and the connecting pieces penetrate through the cover plate, the second long holes and the knife rest and limit the blade between the cover plate and the knife rest. Through the arrangement, the cover plate and the knife rest clamp the blade through the connecting piece, the second long hole is used for avoiding the connecting piece, and the second long hole moves along the length direction of the blade, so that the connecting piece cannot prevent the movement of the blade when the blade reciprocates along the length direction of the blade.

Further, the number of the connecting pieces is two, and the connecting pieces are arranged along the length direction of the blade. Through the arrangement, when the gear rotates, the blade reciprocates along the length direction of the blade.

Further, the connecting piece comprises a nut and a bolt, the bolt comprises a head and a stud, the stud is in threaded connection with the nut, and the cover plate and the tool rest are arranged between the head and the nut.

Drawings

Fig. 1 is a schematic diagram of an embodiment.

FIG. 2 is a schematic view of a gearbox and drive wheels.

Fig. 3 is a schematic view of the positioning member passing through the first positioning hole and being inserted into the positioning portion.

Fig. 4 is a cross-sectional view of fig. 3.

FIG. 5 is a schematic view of the insert assembly after the positioning member passes through the second and third positioning holes.

Fig. 6 is an enlarged view at a of fig. 5.

Fig. 7 is a schematic view of a blade assembly with a concealed cover plate installed.

Detailed Description

The technical scheme of the utility model is further specifically described below through examples and with reference to the accompanying drawings.

Referring to fig. 1 to 7, a pruning shear mounting and positioning structure includes a blade assembly 11, a gear case 12, a driving wheel 13 rotatably coupled in the gear case 12 and for driving the blade assembly 11 to move, the driving wheel 13 being provided with a first positioning hole 131, the gear case 12 being provided with a positioning portion 121, the pruning shear mounting and positioning structure further including a positioning member 14 for passing through the first positioning hole 131 and inserting the positioning portion 121 to complete positioning of the driving wheel 13, the blade assembly 11 including a cutter frame 111 and a plurality of blades 112, the blades 112 being provided with a first long hole 1121, a second positioning hole 1122 through which the positioning member 14 passes and which allows the first long hole 1121 and the driving wheel 13 to be fitted, the cutter frame 111 being provided with a third positioning hole 1111 through which the positioning member 14 passes and completes positioning of the cutter frame 111.

By the above arrangement, the mounting efficiency of the blade assembly 11 is improved. Specifically, when the blade assembly 11 needs to be mounted, referring to fig. 3 and 4, the positioning member 14 is first inserted into the positioning portion 121 through the first positioning hole 131, at this time, the position between the driving wheel 13 and the gear case 12 is fixed, positioning of the driving wheel 13 is completed, then the positioning member 14 is pulled out, and in a state that the positioning member 14 is pulled out from the positioning portion 121 and the first positioning hole 131 after positioning of the driving wheel 13 and the gear case 12 is completed, the blade assembly 11 is guided to the mounting position, so that the first long hole 1121 is aligned with the driving wheel 13, so as to facilitate the mounting of the blade assembly 11. Specifically, the positioning piece 14 passes through the second positioning hole 1122 and the third positioning hole 111, see fig. 5, positioning is completed between the blade 112, and the position between the blade 112 and the tool rest 111 is fixed, positioning is completed between the blade 112 and the tool rest 111, and the first long hole 1121 of the blade 112 is matched with the driving wheel 13, the first long hole 1121 of the blade 112 can be directly mounted on the driving wheel 13 without rotating the driving wheel for many times, see fig. 7, and finally the tool rest 111 is fixed on the gear box 12, so that mounting of the blade assembly 11 can be completed.

As one implementation, the positioning portion 121 is provided as a positioning groove, so that the driving wheel completes positioning when the positioning member passes through the first positioning hole and is inserted into the positioning groove.

As another implementation, the positioning portion 121 is configured as a positioning protrusion, and the positioning member is configured with a groove adapted to the positioning protrusion, so that when the positioning member passes through the first positioning hole and the positioning protrusion is embedded in the groove, the driving wheel completes positioning.

As one implementation, the driving wheel 13 includes a gear 132 rotatably connected in the gear case 12, a first eccentric 133 fixedly connected to a side of the gear 132 remote from the gear case 12, and a second eccentric 134 fixedly connected to a side of the first eccentric 133 remote from the gear 132, the number of blades 112 being two, wherein a first long hole 1121 of one blade 112 is engaged with the first eccentric 133, and a first long hole 1121 of the other blade 112 is engaged with the second eccentric 134.

Through the arrangement, the two blades 112 are arranged up and down, in the installation process of the blade assembly 11, the first long hole 1121 of the blade 112 positioned at the lower side passes through the second eccentric wheel 134 and is sleeved on the first eccentric wheel 133, the blade 112 positioned at the upper side is directly sleeved on the first eccentric wheel 133, when the gear 132 drives the first eccentric wheel 133 and the second eccentric wheel 134 to rotate, the first eccentric wheel 133 drives the corresponding blade 112 to reciprocate through the first long hole 1121, and the second eccentric wheel 134 drives the corresponding blade 112 to reciprocate through the second long hole 1123.

As an implementation manner, as shown in fig. 7, a length direction and a width direction of the blade are defined, when the positioning member 14 passes through the first positioning hole 131 and is inserted into the positioning portion 121, a center of the first eccentric wheel 133 and a center of the second eccentric wheel 134 are arranged along the width direction of the blade 112, the first long hole 1121 extends along the width direction of the blade 112, and when the positioning member 14 passes through the second positioning hole 1122 and the third positioning hole 1111, the first long hole 1121 is aligned with the driving wheel 13, that is, the positions between the first long holes correspond to each other, so that the first long holes can be sleeved on the first eccentric wheel and the second eccentric wheel at a time, the first long holes can be overlapped, and the first long holes 1121 may not be overlapped, in this embodiment, the first long holes 1121 are overlapped.

With the above arrangement, when the blade assembly 11 is mounted, the first long hole 1121 of the lower blade 112 is fitted over the first eccentric gear 133 via the second eccentric gear 134, that is, the lower blade 112 does not interfere with the second eccentric gear 134, and in addition, the first long hole 1121 of the upper blade 112 is directly fitted over the second eccentric gear 134.

As one implementation, the first positioning hole 131 is provided on the gear 132.

Through the arrangement, the gear 132 is positioned through the positioning piece 14, the positioning of the first eccentric wheel 133 and the second eccentric wheel 134 is further realized, and the first positioning hole 131 is formed in the gear 132, so that the depth of the first positioning hole 131 is small, the processing difficulty is reduced, the size of the positioning piece 14 is reduced, and the cost is reduced.

As one implementation, the number of the first positioning holes 131 is two, the number of the positioning parts 121 is two and corresponds to one of the first positioning holes 131, the positioning member 14 includes two pin parts 141 for passing through the first positioning holes 131 and inserting into the positioning parts 121, and a link part 142 for fixing the two pin parts 141 together, and the pitch of the pin parts 141 is adapted to the pitch of the first positioning holes 131.

Through the above arrangement, the gear 132 is conveniently driven to rotate by the positioning piece 14, so that the gear 132 is conveniently positioned, specifically, when the gear 132 is positioned, the two plug pin parts 141 are firstly inserted into the two first positioning holes 131, then the gear 132 is driven to rotate by the positioning piece 14, and when the first positioning hole 131 of the gear 132 rotates to the positioning part 121, the plug pin parts 141 are inserted into the positioning part 121. Referring to fig. 5, the latch portion 141 is passed through the second positioning hole 1122 and the third positioning hole 1111, at which time the position between the blade 112 and the holder 111 is fixed, the positioning between the blade 112 and the holder 111 is completed, and at which time the first long hole 1121 of the blade 112 is fitted with the driving wheel 13, the first long hole 1121 of the blade 112 may be directly mounted on the driving wheel 13.

As one implementation, the positioning member 14 is an integrally formed structure.

Through the arrangement, the positioning piece 14 can be formed by bending a metal rod, so that the positioning piece 14 is convenient to manufacture.

As an implementation, the blade assembly 11 further includes a cover plate 113, where the cover plate 113 is disposed on a side of the blade 112 away from the blade holder 111, and the cover plate 113, the blade 112, and the blade holder 111 are connected together by the connection member 15.

With the above arrangement, the cover plate 113 is positioned at the end of the blade 112 near the gear case 12, and when the blade assembly 11 is mounted, the cover plate 113 and the blade holder 111 are fixed to the gear case 12, the cover plate 113 and the blade holder 111 function to protect the blade 112, the connector 15 assembles the cover plate 113, the blade holder 111, and the blade 112 together, and when the gear 132 rotates, the blade 112 reciprocates between the cover plate 113 and the blade holder 111.

As one implementation, the blade 112 is provided with a plurality of second long holes 1123 extending along the length direction of the blade 112, the number of the connecting members 15 is more than two, and the connecting members 15 pass through the cover plate 113, the second long holes 1123 and the tool holder 111 and limit the blade 112 between the cover plate 113 and the tool holder 111.

With the above arrangement, the cover plate 113 and the blade holder 111 sandwich the blade 112 by the link 15, the second long hole 1123 serves to avoid the link 15, and the second long hole 1123 moves in the length direction of the blade 112, so that the link 15 does not hinder the movement of the blade 112 when the blade 112 reciprocates in the length direction of the blade 112.

As one implementation, the number of the connection members 15 is two, and the connection members 15 are disposed along the length direction of the blade 112.

With the above arrangement, the blade 112 reciprocates in the longitudinal direction of the blade 112 when the gear 132 rotates.

As one implementation, the coupling 15 includes a nut 151 and a bolt 152, the bolt 152 includes a head 1521 and a stud 1522, the stud 1522 is threadably coupled to the nut 151, and the cover plate 113 and the tool holder 111 are disposed between the head 1521 and the nut 151.

It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.

Claims (10)

1. The utility model provides a pruning shear installation location structure, includes blade subassembly (11), gear box (12), rotates and is connected drive wheel (13) that are used for the drive in gear box (12) blade subassembly (11) motion, blade subassembly (11) include knife rest (111) and a plurality of blade (112), blade (112) be provided with first slot hole (1121) of drive wheel (13) adaptation, characterized in that, drive wheel (13) are provided with first locating hole (131), gear box (12) are provided with location portion (121), pruning shear installation location structure still includes and is used for passing first locating hole (131) and inserts location portion (121) in order to accomplish location of drive wheel (13), and in location portion (14) are accomplished behind drive wheel (13) location with gear box (12) are taken out location portion (121) and first locating hole (131) under the state that blade subassembly (11) direction is installed and is located, first slot hole (1121) just right with drive wheel (13) adaptation.

2. The pruning shears mounting and positioning structure according to claim 1, characterized in that the blade is further provided with a second positioning hole (1122) through which the positioning piece (14) passes and which allows the first long hole (1121) and the driving wheel (13) to be fitted.

3. A pruning shear mounting and positioning structure according to claim 2, characterized in that the blade holder (111) is provided with a third positioning hole (1111) for the positioning member (14) to pass through and complete the positioning of the blade holder (111).

4. The pruning shear mounting and positioning structure according to claim 1, wherein the driving wheel (13) comprises a gear (132) rotatably connected in the gear box (12), a first eccentric wheel (133) fixedly connected to a side of the gear (132) away from the gear box (12), and a second eccentric wheel (134) fixedly connected to a side of the first eccentric wheel (133) away from the gear (132), wherein the number of the blades (112) is two, wherein a first long hole (1121) of one blade (112) is matched with the first eccentric wheel (133), and a first long hole (1121) of the other blade (112) is matched with the second eccentric wheel (134).

5. The pruning shears mounting and positioning structure according to claim 1, characterized in that the blade is further provided with a second positioning hole (1122) through which the positioning piece (14) passes and which allows the first long hole (1121) and the driving wheel (13) to be fitted; the tool rest (111) is provided with a third positioning hole (1111) for the positioning piece (14) to pass through and complete the positioning of the tool rest (111); the driving wheel (13) comprises a gear (132) rotatably connected in the gear box (12), a first eccentric wheel (133) fixedly connected to one side, far away from the gear box (12), of the gear (132), and a second eccentric wheel (134) fixedly connected to one side, far away from the gear (132), of the first eccentric wheel (133), wherein the number of the blades (112) is two, one of the first long holes (1121) of the blades (112) is matched with the first eccentric wheel (133), and the other one of the first long holes (1121) of the blades (112) is matched with the second eccentric wheel (134);

when the positioning piece (14) passes through the first positioning hole (131) and is inserted into the positioning part (121), the circle center of the first eccentric wheel (133) and the circle center of the second eccentric wheel (134) are arranged along the width direction of the blade (112), the first long hole (1121) extends along the width direction of the blade (112), and when the positioning piece (14) passes through the second positioning hole (1122) and the third positioning hole (1111), the first long hole (1121) is right opposite to the driving wheel (13) in an adapting way.

6. The pruning shear mounting and positioning structure according to claim 1, wherein the number of the first positioning holes (131) is two, the number of the positioning parts (121) is two and corresponds to the number of the first positioning holes (131) one by one, the positioning piece (14) comprises two plug pin parts (141) which are used for penetrating through the first positioning holes (131) and inserting into the positioning parts (121), and connecting rod parts (142) which are used for fixing the two plug pin parts (141) together, and the interval of the plug pin parts (141) is matched with the interval of the first positioning holes (131).

7. A pruning shear mounting location according to any one of claims 1-6, characterised in that the blade assembly (11) further comprises a cover plate (113), the cover plate (113) being arranged on a side of the blade (112) remote from the blade holder (111), the cover plate (113), the blade (112) and the blade holder (111) being connected together by means of a connecting piece (15).

8. The pruning shear mounting and positioning structure according to claim 7, wherein the blade (112) is provided with a plurality of second long holes (1123) extending along the length direction of the blade (112), the number of the connecting pieces (15) is more than two, and the connecting pieces (15) penetrate through the cover plate (113), the second long holes (1123) and the knife rest (111) and limit the blade (112) between the cover plate (113) and the knife rest (111).

9. The pruning shear mounting and positioning structure according to claim 7, characterized in that the number of the connecting pieces (15) is two, and the connecting pieces (15) are arranged along the length direction of the blade (112).

10. The pruning shear mounting and positioning structure according to claim 8, wherein the connecting member (15) comprises a nut (151) and a bolt (152), the bolt (152) comprises a head (1521) and a stud (1522), the stud (1522) is in threaded connection with the nut (151), and the cover plate (113) and the tool holder (111) are arranged between the head (1521) and the nut (151).

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