CN218218344U - Adjustable handle assembly and agricultural and forestry tool with same - Google Patents

Abstract

An adjustable handle assembly is used for being connected to a control rod extending along the longitudinal direction, and comprises a fixing ring sleeved on the control rod and a handle fixed on the fixing ring; the adjustable handle assembly further comprises a limiting part used for being fixed on the operating rod, the limiting part is provided with a rotation stopping part extending along the longitudinal direction and two limiting parts located at two longitudinal ends of the rotation stopping part, the fixing ring is sleeved on the rotation stopping part and located between the two limiting parts, the fixing ring longitudinally moves between the two limiting parts, the fixing ring is provided with a matching part located on the inner wall, and the rotation stopping part is matched with the matching part so that the fixing ring is circumferentially fixed relative to the limiting part. The application provides an adjustable handle assembly makes the handle can adjust in limited length range along the longitudinal direction of control rod to can keep the preferred circumference angle of preset. The agriculture and forestry tool with the adjustable component handle can realize that the handle can be adjusted in height more quickly and accurately to avoid circumferential rotation.

Description

Adjustable handle assembly and agricultural and forestry tool with same

[ technical field ]

The utility model relates to an agriculture and forestry instrument's technical field especially relates to an adjustable handle components for agriculture and forestry instrument.

[ background art ]

A grass mower or brush cutter is a common handheld garden tool and generally comprises an energy system, a power system driven by the energy system, a transmission system connected with the power system and used for transmitting power to the power system, a working head driven by the transmission system and a support system sequentially combining the systems, wherein the support system comprises a control lever connected with the working head and the energy system, and a handle used for being held and operated by a user is sleeved on the control lever. In order to adapt to the heights of different users, the conventional grass mower or brush cutter on the market is provided with a function of adjusting a handle, namely, when the holding height needs to be adjusted, the handle is loosened, is adjusted to slide up and down along the extending direction of an operating rod, and is stopped at a proper position for positioning.

However, the existing adjustable handle structure has some defects, so that a user has some trouble when adjusting the handle, for example, the handle is not provided with a limit structure, and the handle slides down along the control lever once the user loosens the handle, so that the handle is difficult to fix; or after the longitudinal position of the operating rod is selected, the circumferential position of the handle relative to the operating rod is not easy to grasp, and the handle is easy to rotate after the position is fixed, so that the user is not very troublesome.

In view of the above, there is a need to provide an improved adjustable handle assembly and an agricultural and forestry tool having the same, which overcome the disadvantages of the prior art.

[ contents of utility model ]

To the deficiency of the prior art, the utility model aims to provide an adjustable handle assembly which can be conveniently longitudinally adjusted and keep the circumferential position unchanged.

The utility model provides a technical scheme that prior art problem adopted is: an adjustable handle assembly for connection to a longitudinally extending joystick, said adjustable handle assembly comprising a retaining ring mounted on said joystick and a handle secured to said retaining ring; the adjustable handle assembly further comprises a limiting part fixed on the operating rod, the limiting part is provided with a rotation stopping part extending along the longitudinal direction and two limiting parts located at two longitudinal ends of the rotation stopping part, the fixing ring is sleeved on the rotation stopping part and located between the limiting parts, the fixing ring is longitudinally moved between the limiting parts, the fixing ring is provided with a matching part located on the inner wall, the rotation stopping part is matched with the matching part, and therefore the fixing ring is circumferentially fixed relative to the limiting part.

The further improvement scheme is as follows: the limiting portion is sleeved on the periphery of the operating rod and comprises a C-shaped side wall surrounding the periphery of the operating rod, an opening formed by the C-shaped side wall and a pair of lugs extending outwards from the opening, the handle adjustable component comprises a fastener penetrating through the pair of lugs, and the limiting portion is locked on the operating rod by the fastener.

The further improvement scheme is as follows: the cross section of the limiting part is in an omega shape.

The further improvement scheme is as follows: the rotation stopping portion is used for being attached to the periphery of the operating rod, and the angle of the rotation stopping portion extending along the circumferential direction of the operating rod is not more than 90 degrees.

The further improvement scheme is as follows: the cooperation portion is certainly the inside sunken recess of inner wall of retainer plate, the recess is along vertically running through the retainer plate, rotation stopping portion hold in the recess, so that the retainer plate for locating part circumference is fixed.

The further improvement scheme is as follows: the handle comprises a first handle and a second handle which are spliced around the fixing ring, the first handle comprises a first joint part for receiving the upper part of the fixing ring, the second handle comprises a second joint part for receiving the lower part of the fixing ring, the first joint part and the second joint part are both provided with mounting holes, and the adjustable handle assembly comprises a fastener which is arranged in the mounting holes in a penetrating mode and used for splicing the first joint part and the second joint part.

The further improvement scheme is as follows: the fixing ring is provided with radial protrusions protruding from the outer peripheral surface to the first joint part and the second joint part, and the first joint part and the second joint part are both provided with limiting grooves matched with the radial protrusions at corresponding positions.

The further improvement scheme is as follows: the first handle is a D-shaped handle, and the second handle is a blocking handle.

The further improvement scheme is as follows: the adjustable handle assembly further comprises a vibration reduction piece sleeved on the periphery of the fixing ring, and the vibration reduction piece is located between the handle and the fixing ring.

Another object of the utility model is to provide an agriculture and forestry instrument, including the energy supply system, by energy supply system driven motor, by the motor drives rotatory working head, and connects the working head with the control rod of energy supply system, wherein, agriculture and forestry instrument still includes as above arbitrary adjustable handle components, adjustable handle components locates on the control rod.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model provides an adjustable handle assembly has both ends and is equipped with the locating part of spacing portion for the retainer plate drives the handle and adjusts in limited length range along vertical of control rod, and the cooperation of portion of splines and retainer plate mutually cooperates and can make the relative control rod of handle keep preset's preferred circumference angle. Therefore, the utility model provides an adjustable handle assembly and have agriculture and forestry instrument of this adjustable subassembly handle can realize that the handle is faster, carry out height control more accurately and avoid circumferential direction, overcome prior art's defect.

[ description of the drawings ]

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:

FIG. 1 is a perspective view of a grass trimmer according to a preferred embodiment of the present invention;

FIG. 2 is a perspective view of the adjustable handle assembly of the lawnmower of FIG. 1;

FIG. 3 is an exploded view of the adjustable handle assembly shown in FIG. 2;

FIG. 4 is a schematic cross-sectional view of the adjustable handle assembly shown in FIG. 2.

The meaning of the reference symbols in the figures:

100. grass trimmer 1, battery receiving part 2 and working head

3. Control rod 4, control system 5 and adjustable handle assembly

51. Handle 510, first handle 511, first joint

512. A second handle 513, a second joint 515, a limit groove

53. Limiting piece 530, limiting part 532 and lug

55. Rotation stopping part 57, fixing ring 570 and groove

572. Radial projection 58, damping member 580, projection

6. Braces

[ detailed description of the invention ]

The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Words such as "upper," "lower," "front," "rear," and the like, which indicate orientation or positional relationships, are used solely to facilitate the description of the invention and to simplify the description, and do not indicate or imply that the referenced devices/elements must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Referring to fig. 1 to 3, the agricultural and forestry tool according to the present invention is a grass mower 100 in the preferred embodiment, but may be a garden tool such as a brush cutter or an agricultural tool such as a shovel or a spade in other embodiments. In this embodiment, the grass trimmer 100 comprises an energy system, a power system driven by the energy system, a transmission system connected with the power system and transmitting power to the power system, a working head 2 driven by the transmission system, a control system 4 controlling the grass trimmer 100 to start or stop, and a support system sequentially combining the systems, wherein the support system comprises a control lever 3 connecting the working head 2 and the energy system, and an adjustable handle assembly 5 for a user to hold and operate is sleeved on the control lever 3.

The grass trimmer 100 is a direct-current grass trimmer 100, the energy system comprises a battery pack detachably assembled at the end of the grass trimmer 100, a battery receiving part 1 for receiving and holding the battery pack is arranged at the end of the grass trimmer 100, the battery receiving part 1 is electrically connected with the battery pack through a terminal, and electric power is transmitted to the power system through a cable.

The power system mainly comprises a motor, wherein the motor can be a brushless motor, can also be a brush motor, can be an inner rotor motor, and can also be an outer rotor motor. In the present embodiment, the motor is provided at an end of the lawn mower 100 and is disposed adjacent to the battery receiving portion 1. Of course, in other embodiments, the motor may be disposed at one end of the working head 2 and connected to the battery receiving portion 1 through a cable.

The power system transmits power to the working head 2 through the transmission system, the transmission system comprises a gear reduction structure matched with an output shaft of a motor of the power system, and after the speed reduction is carried out through a plurality of gears, the rotating power is transmitted to the working head 2, so that the working head 2 can rotate to drive the blade or the grass cutting rope to trim the lawn. In this embodiment, the transmission system is divided into two parts, one of which is disposed adjacent to the output shaft of the motor and at one end of the energy system, and the other of which is disposed adjacent to the working head 2. Of course, in other embodiments, the transmission system may be located entirely at the working end, or entirely at the energy system end. It is worth mentioning that the power is transmitted from one end of the energy system to one end of the working head 2, and the distance of 1-2 meters needs to be spanned, so that the two are required to be communicated by the supporting system.

The support system comprises an operating rod 3 connecting the working head 2 and the energy system, the operating rod 3 being typically a longitudinally extending hollow aluminium tube within which a drive shaft is housed to connect the two parts of the drive system. In this embodiment, the transmission shaft is a hard shaft, and a flexible vibration damping member is further disposed between the hard shaft and the aluminum pipe to damp vibration.

The support system further comprises a carrying strap 6 and an adjustable handle assembly 5, one end of the carrying strap 6 being connected to the control lever 3 and the other end being adapted to be worn over the user's shoulder to facilitate carrying of a weight of several kilograms of the lawnmower 100 and to support the lawnmower 100 for a longer period of time.

Referring to fig. 1 to 4, an adjustable handle assembly 5 according to a preferred embodiment of the present invention is connected to a control rod 3 extending in a longitudinal direction. The adjustable handle assembly 5 includes a fixing ring 57 sleeved on the operation rod 3 and a handle 51 fixed on the fixing ring 57, wherein the handle 51 is connected to the operation rod 3 through the fixing ring 57. The adjustable handle assembly 5 further includes a limiting member 53 fixed to the operating lever 3, the limiting member 53 is provided with a rotation stopping portion 55 extending along the longitudinal direction and two limiting portions 530 located at two longitudinal ends of the rotation stopping portion 55, the fixing ring 57 is sleeved on the rotation stopping portion 55 and located between the two limiting portions 530, the fixing ring 57 longitudinally moves between the two limiting portions 530, the fixing ring 57 is provided with a matching portion located on the inner wall, and the rotation stopping portion 55 is matched with the matching portion, so that the fixing ring 57 is circumferentially fixed relative to the limiting member 53.

Due to the arrangement of the limiting parts 530 at the two ends of the limiting part 53 and the circumferential limitation of the rotation stop part 55 and the fixing ring 57, the handle 51 can keep a preset preferred circumferential angle unchanged and can be adjusted within a limited length range along the longitudinal direction of the operating rod 3. Therefore, the utility model provides an adjustable handle assembly 5 and have this adjustable assembly handle 51's agriculture and forestry instrument can realize that handle 51 carries out height control faster, more accurately and avoids the rotation in a circumferential direction, has overcome the defect that prior art generally faces.

Referring to fig. 2, in order to illustrate a perspective view of the adjustable handle assembly 5 according to the preferred embodiment of the present invention, the limiting portion 530 is sleeved on the outer periphery of the operating rod 3, and includes a C-shaped sidewall surrounding the outer periphery of the operating rod 3, an opening formed by the C-shaped sidewall, and a pair of lugs 532 extending outward from the opening, the adjustable assembly of the handle 51 includes a fastener penetrating through the pair of lugs 532, and the limiting portion 530 is locked on the operating rod 3 by the fastener. Due to the arrangement of the lug 532 and the fastening member, the position-limiting portion 530 is no longer circular, which makes the fixing ring 57 sliding longitudinally along the position-limiting portion 53 limited and unable to move forward any more when reaching the position of the position-limiting portion 530, in other words, the position-limiting portions 530 at both ends of the position-limiting portion 53 limit the length of the position-limiting portion 53 that can be adjusted slidably, so that the handle 51 can be adjusted in position within a preset length section, and the situation that it slides all the way to the bottom along the operating rod 3 is avoided.

In the present embodiment, the cross-sectional shape of the limiting portion 530 is an Ω shape, that is, a ring shape surrounding the operating lever 3 and having an opening, and a pair of bosses 532 extending from the opening, and positioning holes are respectively provided on the two bosses 532 disposed opposite to each other, and a fastening member passes through the positioning holes to lock the circumferential direction of the limiting portion 530, so as to fix the limiting member 53 to the operating lever 3. The fastener can be a screw, and can also be a pin or a bolt.

Referring to fig. 3, the rotation stopper 55 is attached to the outer periphery of the lever 3, and the rotation stopper 55 extends along the circumferential direction of the lever 3 by an angle of not more than 90 degrees. Specifically, the rotation stop portion 55 connects the two stopper portions 530 at both ends, and the two stopper portions 530 have a size larger than that of the rotation stop portion 55 in the radial direction. In the present embodiment, the angle at which the rotation stopper 55 extends in the circumferential direction of the joystick 3 is less than 90 degrees.

The engaging portion is a groove 570 recessed inward from an inner wall of the fixing ring 57, the groove 570 penetrates the fixing ring 57 in the longitudinal direction, and the rotation stopping portion 55 is accommodated in the groove 570, so that the fixing ring 57 is circumferentially fixed with respect to the limiting member 53. In this way, the fixing ring 57 is fixed circumferentially relative to the limiting element 53 and is movable in the longitudinal direction between the two limiting portions 530, so that the handle 51 can be stopped circumferentially relative to the operating lever 3 and moved longitudinally within a defined length range.

With continued reference to FIG. 3, handle 51 includes a first handle 510 and a second handle 512 that fit around retainer 57, first handle 510 including a first engagement portion 511 that partially receives retainer 57, second handle 512 including a second engagement portion 513 that partially receives retainer 57, each of first engagement portion 511 and second engagement portion 513 having a mounting hole formed therein, and adjustable handle assembly 5 including a fastener that is disposed through the mounting holes to fit first engagement portion 511 and second engagement portion 513 together. The first engagement portion 511 and the second engagement portion 513 are combined to form a hollow cylindrical receiving chamber to receive the fixing ring 57, and a mounting hole is provided at the periphery of the receiving chamber.

The fixing ring 57 is provided with a radial projection 572 projecting from the outer peripheral surface toward the first engaging portion 511 and the second engaging portion 513, and each of the first engaging portion 511 and the second engaging portion 513 is provided with a stopper groove 515 that matches the radial projection 572 at the corresponding position. The cooperation between the radial protrusion 572 and the limiting groove 515 limits the relative rotation between the fixing ring 57 and the first handle 510 and the second handle 512, further ensuring the circumferential fixation of the handle 51 relative to the operating rod 3.

In addition, the first handle 510 is a D-shaped handle 51 for the user to hold, and the second handle 512 is a stopper for prompting the user to keep the distance between the body and the working head 2 so as not to be accidentally injured by the rotating working head 2. The handle 51 is adjustable within the length range of the limiting member 53, so that on one hand, a user can select a proper fixed position within a preset proper length range, and on the other hand, the user can be ensured to meet the requirement of safety regulations even if the handle 51 is adjusted to the lowest position.

Referring to fig. 3 and 4, the adjustable handle assembly 5 further includes a damping member 58 disposed around the fixing ring 57, wherein the damping member 58 is disposed between the handle 51 and the fixing ring 57. In this embodiment, the vibration damping member 58 is a flexible rubber ring, and is sleeved on the fixing ring 57 to cushion the vibration in the joystick 3, thereby preventing the vibration from being transmitted to the handle 51 to cause the hand of the user to be tingling. In order to receive and fix the radial projections 572 on both sides of the outer periphery of the fixing ring 57, the vibration dampers 58 are also provided with protrusions 580 on both sides of the outer periphery thereof.

To sum up, the utility model provides an adjustable handle assembly 5 has set up foretell locating part 53 and retainer plate 57 for handle 51 can be adjusted in limited length range along control rod 3 vertically, and can keep preset's preferred circumference angle. The adjustable handle assembly 5 can be used in garden tools such as lawn mowers 100, brush cutters, etc. in the preferred embodiment, as well as agricultural tools such as shovels, etc. having a longitudinal handle. In a word, the adjustable handle assembly 5 and the agricultural and forestry tool with the adjustable handle assembly 5 can overcome the defects of the prior art, so that the handle 51 can be adjusted in the longitudinal direction while the circumferential rotation is limited, and the requirements of more users are met.

The present invention is not limited to the above-described embodiments. It will be readily appreciated by those skilled in the art that there are numerous alternatives to the adjustable handle assembly of the present invention without departing from the spirit and scope of the invention. The protection scope of the present invention is subject to the content of the claims.

Claims (10)

1. An adjustable handle assembly for connection to a longitudinally extending joystick, said adjustable handle assembly comprising a retaining ring mounted on said joystick and a handle secured to said retaining ring; the method is characterized in that: adjustable handle assembly is still including being used for being fixed in locating part on the control rod, the locating part is equipped with along longitudinal extension's the portion of splining and is located two spacing portions at the vertical both ends of the portion of splining, the retainer plate cover is located the portion of splining just is located two between the spacing portion, the retainer plate is two carry out longitudinal movement between the spacing portion, the retainer plate is equipped with the cooperation portion that is located on the inner wall, the portion of splining with the cooperation portion cooperates, makes the retainer plate for locating part circumference is fixed.

2. The adjustable handle assembly of claim 1, wherein: the limiting portion is sleeved on the periphery of the operating rod and comprises a C-shaped side wall surrounding the periphery of the operating rod, an opening formed by the C-shaped side wall and a pair of lugs extending outwards from the opening, the handle adjustable component comprises a fastener penetrating through the pair of lugs, and the limiting portion is locked on the operating rod by the fastener.

3. The adjustable handle assembly of claim 2, wherein: the cross section of the limiting part is in an omega shape.

4. The adjustable handle assembly of claim 1, wherein: the rotation stopping portion is used for being attached to the periphery of the operating rod, and the rotation stopping portion extends along the circumferential direction of the operating rod by an angle not exceeding 90 degrees.

5. The adjustable handle assembly of claim 4 wherein: the cooperation portion is certainly the inside sunken recess of inner wall of retainer plate, the recess is along vertically running through the retainer plate, the portion of splining hold in the recess, so that the retainer plate is for locating part circumference is fixed.

6. The adjustable handle assembly of claim 1, wherein: the handle comprises a first handle and a second handle which are spliced around the fixing ring, the first handle comprises a first joint part for receiving the upper part of the fixing ring, the second handle comprises a second joint part for receiving the lower part of the fixing ring, the first joint part and the second joint part are both provided with mounting holes, and the adjustable handle assembly comprises a fastener which is arranged in the mounting holes in a penetrating mode and used for splicing the first joint part and the second joint part.

7. The adjustable handle assembly of claim 6 wherein: the fixing ring is provided with radial protrusions protruding from the outer peripheral surface to the first joint part and the second joint part, and the first joint part and the second joint part are both provided with limiting grooves matched with the radial protrusions at corresponding positions.

8. The adjustable handle assembly of claim 6 wherein: the first handle is a D-shaped handle, and the second handle is a blocking handle.

9. The adjustable handle assembly of claim 1, wherein: the adjustable handle assembly further comprises a vibration reduction piece sleeved on the periphery of the fixing ring, and the vibration reduction piece is located between the handle and the fixing ring.

10. The utility model provides an agriculture and forestry instrument, including energy supply system, by energy supply system driven motor, by the motor drives rotatory working head and connects the working head with energy supply system's control rod, its characterized in that: the agricultural implement further comprising an adjustable handle assembly as defined in any one of claims 1 to 9, the adjustable handle assembly being provided on the joystick.

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