CN215601809U - But quick adjustment's handrail frame - Google Patents

Abstract

The utility model provides a handrail frame capable of being quickly adjusted, which comprises a handrail seat assembly, a handrail frame body, a toothed plate, an adjusting handle, a clamping piece and a torsion spring. The torsion spring is used for pressing the clamping piece into the clamping groove and comprises a first torsion arm and a second torsion arm, the first torsion arm is connected with the clamping piece, and the second torsion arm is abutted against the armrest seat assembly. This but quick adjustment's handrail frame screens piece can not separate with the draw-in groove easily to realized the firm cooperation of handrail support body with handrail seat subassembly, optimized the stability between handrail support body and the handrail seat subassembly.

Description

But quick adjustment's handrail frame

Technical Field

The utility model relates to the technical field of mini-tillers, in particular to a handrail frame capable of being quickly adjusted.

Background

With the use of the micro-tillage machine in agricultural tillage more and more frequently, people also put higher requirements on the use convenience degree of the micro-tillage machine. The existing micro-tillage machine comprises a frame, a power system, a tillage tool and an armrest frame. The handrail frame is a part for operating the mini-tiller, the handrail frame needs to be adjusted according to different operation requirements in the using process, and the handrail frame needs to be adjusted in multiple directions in the adjusting process to meet the requirements for tilling.

At present, the upper and lower adjustment structure of handrail frame is various, and the more common one is through using the torsional spring to connect and press handle and handrail frame for the bayonet lock on pressing the handle is blocked in the draw-in groove of fluted disc steadily through the elasticity of torsional spring. However, the torsion spring in such a structure usually acts on the pressing handle instead of acting on the lower clamping pin, and because the clamping pin is far away from the hinged position of the pressing handle, when the mini-tiller is used or shaken, the clamping pin is easily separated from the clamping slot, so that the upper and lower adjustment failures of the armrest frame are caused, and the operation and use are affected.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the handrail frame capable of being quickly adjusted so as to improve the tight fit degree of the clamping piece and the clamping groove and avoid the clamping piece from falling off from the clamping groove.

In order to achieve the above object, the present invention provides a rapidly adjustable armrest frame, comprising an armrest base assembly; the handrail frame body is rotatably connected to the handrail seat assembly and is provided with a toothed plate, and the toothed plate is provided with a plurality of clamping grooves distributed in an arc shape; the adjusting handle is rotatably connected to the armrest seat component, a clamping part is arranged on the adjusting handle, and the clamping part is matched with the clamping groove; and the torsional spring is used for pressing the clamping piece into the clamping groove, and comprises a first torsion arm and a second torsion arm, wherein the first torsion arm is connected with the clamping piece, and the second torsion arm is abutted against the armrest seat component.

Preferably, the free end of the first torque arm is provided with a hook-shaped connecting part, and the connecting part hooks the clamping part.

Preferably, the free end of the second torsion arm is bent to form a butting portion, and the butting portion is abutted against the armrest seat assembly.

Preferably, the armrest seat assembly comprises a middle section rod body, a protecting cover and a seat body, wherein two ends of the middle section rod body are respectively connected with the protecting cover and the seat body; the protective cover is provided with two U-shaped hoops, and the handrail frame body penetrates through the two U-shaped hoops; the both edges of protecting cover are provided with an arc recess respectively, the arc recess with U type staple bolt is used for the restriction the handrail support body is not hard up.

Preferably, the number of the toothed plates is two, and the two toothed plates are arranged between the two U-shaped hoops at intervals; the adjustment handle is provided with two supplies the breach of stepping down that the pinion rack passed, the screens piece is fixed in the breach of stepping down.

Preferably, a hinged support is arranged at one end of the middle rod body close to the protecting cover, two groups of mounting holes penetrate through the hinged support, and a group of alignment holes penetrate through the adjusting handle; still include the pin, adjustment handle with the free bearing passes through the pin passes counterpoint hole and one of them is a set of the mounting hole is realized articulating, the torsional spring cover is established on the pin.

Preferably, the base body is provided with a connecting column, one end of the middle section rod body is sleeved outside the connecting column, the circumferential outer wall of the connecting column is provided with an annular groove, the middle section rod body is provided with a screw hole, the screw hole is in threaded fit with a limit bolt, and one end of the limit bolt extends into the annular groove; the top surface of the seat body is provided with a plurality of positioning holes, and the seat body further comprises a positioning mechanism, wherein the positioning mechanism is matched with the positioning holes and used for limiting the relative rotation of the middle section rod body and the seat body.

Preferably, the positioning mechanism comprises a positioning barrel, a positioning pin, an elastic piece, a pull cable and a handle; the positioning cylinder is arranged at one end, close to the seat body, of the middle rod body, the top end of the positioning cylinder is provided with a sealing cover, and a gap is formed between the bottom end of the positioning cylinder and the top surface of the seat body; the positioning pin is in sliding fit in the positioning cylinder, extends out of the bottom end of the positioning cylinder and is in splicing fit with the positioning hole; the elastic piece is arranged in the positioning cylinder, and two ends of the elastic piece are respectively connected with the sealing cover and the positioning pin; the handle is arranged at the handheld end of the armrest frame body, one end of the inhaul cable is connected with the handle, and the other end of the inhaul cable penetrates through the sealing cover and then is connected with the positioning pin.

Preferably, the base is provided with a plurality of through holes.

The utility model has the beneficial effects that:

the utility model discloses a handrail frame capable of being quickly adjusted, which solves the problem that the adjusting handle is easy to loosen due to the fact that a torsion spring only acts on a structure of the adjusting handle in the traditional handrail frame of a mini-tiller. Meanwhile, the position design of the adjusting handle enables an operator to adjust the adjusting handle without moving the position, the complexity of adjustment is simplified, and the operation is simpler and more convenient.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of a rapidly adjustable armrest frame according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic structural view of a torsion spring;

FIG. 4 is a schematic view of the engaging structure of the engaging member and the engaging groove;

FIG. 5 is a schematic view of the locking member disengaged from the slot;

FIG. 6 is a schematic structural view of the base;

fig. 7 is a schematic structural view of the positioning pin being inserted into the positioning hole.

Reference numerals:

10-armrest seat component, 101-middle rod body, 102-protective cover, 1021-arc groove, 103-seat body, 1031-positioning hole, 1032-through hole, 104-hinged seat, 1041-mounting hole, 105-connecting column, 1051-annular groove, 20-armrest frame body, 30-toothed plate, 301-clamping groove, 40-adjusting handle, 401-abdicating notch, 50-clamping component, 60-torsion spring, 601-first torsion arm, 602-second torsion arm, 603-connecting part, 604-tightening part, 70-U-shaped hoop, 80-pin, 90-limiting bolt, 100-positioning mechanism, 1001-positioning cylinder, 1002-positioning pin, 1003-elastic component, 1004-inhaul cable, 1005-handle and 1006-sealing cover.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the utility model pertains.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 7, in an embodiment of the present invention, a rapidly adjustable armrest frame is provided, which includes an armrest seat assembly 10, an armrest frame body 20, a toothed plate 30, an adjustment handle 40, a detent 50, and a torsion spring 60.

The handrail seat assembly 10 is installed on a frame (not shown in the figure) of the mini-tiller, the handrail frame body 20 can rotate up and down relative to the handrail seat assembly 10, a toothed plate 30 is fixed on the handrail frame body 20, and the toothed plate 30 is provided with a plurality of clamping grooves 301 distributed in an arc shape. The adjusting handle 40 is rotatably connected to the armrest seat assembly 10, a clamping member 50 is disposed on the adjusting handle 40, the clamping member 50 is matched with the slot 301, the clamping member 50 is of a pin column structure, and the clamping member 50 can be clamped into any one of the slots 301. The torsion spring 60 is used for pressing the locking element 50 into the slot 301, the torsion spring 60 includes a first torsion arm 601 and a second torsion arm 602, the first torsion arm 601 is connected with the locking element 50, and the second torsion arm 602 abuts against the armrest seat assembly 10.

In the armrest frame capable of being adjusted quickly according to the embodiment, the first torsion arm 601 of the torsion spring 60 is connected to the locking member 50 on the adjustment handle 40, and since the second torsion arm 602 of the torsion spring 60 abuts against the armrest seat assembly 10, the torsion spring 60 can continuously apply an elastic force to the locking member 50 when the adjustment handle 40 is rotated to disengage the locking member 50 from the locking slot 301 on the tooth plate 30. After the locking member 50 is completely separated from the locking groove 301, the armrest frame body 20 can be rotated up and down relative to the armrest base assembly 10 by rotating the armrest frame body 20. Because the slots 301 on the toothed plate 30 are distributed in an arc shape, after the armrest frame body 20 is adjusted to a proper position, the adjusting handle 40 is rotated to enable the clamping pieces 50 to be clamped into the corresponding slots 301, and under the elastic force action of the torsion spring 60, even if shaking occurs in the working process of the mini-tiller, the clamping pieces 50 cannot be easily separated from the slots 301, so that the armrest frame body 20 and the armrest seat assembly 10 are firmly matched.

In the handrail frame capable of being adjusted quickly in the embodiment, the problem that the adjusting handle 40 is loosened easily due to the fact that the torsion spring 60 only acts on the adjusting handle 40 in the traditional handrail frame of the mini-tiller is solved. Through being connected first torsion arm 601 with screens 50 for the elasticity of torsional spring 60 directly acts on screens 50, so, has just improved the closely fit degree of screens 50 with draw-in groove 301, has avoided screens 50 to drop from draw-in groove 301, when not using adjustment handle 40, has optimized the stability between handrail support body 20 and handrail seat subassembly 10. Meanwhile, the position design of the adjusting handle 40 enables an operator to adjust without moving the position, so that the complexity of adjustment is simplified, and the operation is simpler and more convenient.

In one embodiment, the free end of the first torsion arm 601 is provided with a hook-shaped connecting portion 603, and the connecting portion 603 hooks the blocking member 50. Specifically, connecting portion 603 is hook-shaped structure, and clamping piece 50 is firmly hooked to connecting portion 603, and like this, in the in-process of rotating adjustment handle 40, the second torque arm 602 of torsional spring 60 supports tightly on middle section body of rod 101 all the time, and first torque arm 601 then rotates along with clamping piece 50 to continuously exert the elasticity that resets to clamping piece 50, through adopting above-mentioned structure, guaranteed that first torque arm 601 acts on clamping piece 50 all the time, improved the closely fit degree of clamping piece 50 with draw-in groove 301.

In one embodiment, the free end of the second torsion arm 602 is bent to form a fastening portion 604, and the fastening portion 604 is fastened to the armrest base assembly 10. Specifically, the second torsion arm 602 and the abutting portion 604 abut against the middle rod 101, and the middle rod 101 is of an arc rod-shaped structure, and the bent abutting portion 604 is designed at the free end of the second torsion arm 602, so that the contact area between the second torsion arm 602 and the middle rod 101 is increased, and the stability of the torsion spring 60 is ensured.

In one embodiment, the armrest seat assembly 10 includes a middle rod 101, a cover 102 and a seat body 103, wherein two ends of the middle rod 101 are respectively connected to the cover 102 and the seat body 103; the protective cover 102 is provided with two U-shaped hoops 70, and the handrail frame body 20 passes through the two U-shaped hoops 70; the two edges of the protecting cover 102 are respectively provided with an arc-shaped groove 1021, and the arc-shaped groove 1021 and the U-shaped anchor ear 70 are used for limiting the loosening of the armrest frame body 20. Handrail seat subassembly 10 is connected through the frame of pedestal 103 with ploughing the machine a little, and the locking end of U type staple bolt 70 passes through the nut and realizes being connected with the fastening of protecting cover 102, because U type staple bolt 70 can only relatively connect handrail support body 20 on protecting cover 102 with moving up, consequently, through the edge design arc recess 1021 at protecting cover 102, under two sets of arc recesses 1021 and U type staple bolt 70's common restriction, can avoid handrail support body 20 too not hard up.

In one embodiment, in order to improve the stability of the engagement between the locking member 50 and the engaging slot 301, the number of the tooth plates 30 is two, and the two tooth plates 30 are spaced between the two U-shaped hoops 70; the adjusting handle 40 is provided with a yielding notch 401 for the two toothed plates 30 to pass through, and the blocking piece 50 is fixed in the yielding notch 401.

In one embodiment, the middle rod 101 has a hinge base 104 at its end near the protecting cover 102, two sets of mounting holes 1041 are formed through the hinge base 104, and a set of alignment holes are formed through the adjustment handle 40; the adjusting handle 40 is hinged to the hinged support 104 through the aligning holes and one group of mounting holes 1041 through the pins 80, and the torsion spring 60 is sleeved on the pins 80.

Through the different mounting hole 1041 in two sets of positions of design on free bearing 104, can adjust the mounted position of adjustment handle 40 on free bearing 104 as required, so, just improved this adjustment handle 40's suitability greatly to satisfy different user demands.

In one embodiment, the base 103 is provided with a connecting column 105, one end of the middle rod 101 is sleeved outside the connecting column 105, the circumferential outer wall of the connecting column 105 is provided with an annular groove 1051, the middle rod 101 is provided with a screw hole, the screw hole is in threaded fit with a limiting bolt 90, and one end of the limiting bolt 90 extends into the annular groove 1051; the top surface of the base 103 is provided with a plurality of positioning holes 1031, and further comprises a positioning mechanism 100, wherein the positioning mechanism 100 is matched with the positioning holes 1031 to limit the relative rotation between the middle section rod body 101 and the base 103.

After the middle section rod body 101 is sleeved on the connecting column 105, although the middle section rod body 101 can be rotatably connected with the base body 103, the middle section rod body 101 and the connecting column 105 still have the risk of separation. Therefore, through design annular groove 1051 and spacing bolt 90, during screwing in the screw and stretching into annular groove 1051 with spacing bolt 90, like this, not only can not influence the normal running fit of the middle section body of rod 101 and spliced pole 105 to, can be with the restriction of the middle section body of rod 101 on spliced pole 105, make the middle section body of rod 101 and spliced pole 105 can not produce the condition of breaking away from.

Certainly, the middle rod 101 and the seat body 103 are connected in a rotating manner and need to be locked and positioned, and therefore, the positioning hole 1031 is designed to cooperate with the positioning mechanism 100, so that when adjustment is not needed, relative rotation between the middle rod 101 and the seat body 103 is prevented.

In one embodiment, the positioning mechanism 100 includes a positioning cylinder 1001, a positioning pin 1002, an elastic member 1003, a pulling cable 1004, and a grip 1005; the positioning cylinder 1001 is arranged at one end, close to the seat body 103, of the middle section rod body 101, the top end of the positioning cylinder 1001 is provided with a sealing cover 1006, and a gap is formed between the bottom end of the positioning cylinder 1001 and the top surface of the seat body 103; the positioning pin 1002 is in sliding fit in the positioning cylinder 1001, and the positioning pin 1002 extends out of the bottom end of the positioning cylinder 1001 and is in splicing fit with the positioning hole 1031; the elastic part 1003 adopts a compression spring, the elastic part 1003 is arranged in the positioning cylinder 1001, and two ends of the elastic part 1003 are respectively connected with the sealing cover 1006 and the positioning pin 1002; the grip 1005 is disposed at the hand-held end of the armrest frame body 20, one end of the cable 1004 is connected to the grip 1005, and the other end of the cable 1004 is connected to the positioning pin 1002 after penetrating the cover 1006.

Specifically, by grasping the handle 1005, the handle 1005 pulls the cable 1004, the other end of the cable 1004 pulls the positioning pin 1002 to disengage from the positioning hole 1031, and compresses the elastic member 1003 in the positioning cylinder 1001, and then the operator drives the middle rod body 101 to rotate around the connecting column 105 through the handle frame body 20. After rotating to suitable position, loosen grip 1005, under the elastic action that resets of elastic component 1003, locating pin 1002 again block in the locating hole 1031 that corresponds for middle section body of rod 101 can't rotate around spliced pole 105 again, like this, just can realize the left and right rotation regulation and the locking of middle section body of rod 101 and pedestal 103.

In one embodiment, the base 103 is provided with a plurality of through holes 1032, and the base 103 can be fastened and connected with the frame of the mini-tiller by passing a locking bolt through the through holes 1032.

In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (9)

1. The utility model provides a but quick adjustment's handrail frame which characterized in that: the method comprises the following steps:

an armrest seat assembly;

the handrail frame body is rotatably connected to the handrail seat assembly and is provided with a toothed plate, and the toothed plate is provided with a plurality of clamping grooves distributed in an arc shape;

the adjusting handle is rotatably connected to the armrest seat component, a clamping part is arranged on the adjusting handle, and the clamping part is matched with the clamping groove; and

the torsion spring is used for pressing the clamping piece into the clamping groove and comprises a first torsion arm and a second torsion arm, the first torsion arm is connected with the clamping piece, and the second torsion arm is abutted against the armrest seat component.

2. The rapidly adjustable armrest frame of claim 1, wherein: the free end of first torque arm is provided with and is hook-like connecting portion, the connecting portion hook the screens piece.

3. The rapidly adjustable armrest frame of claim 1, wherein: the free end of the second torque arm is bent to form a propping part, and the propping part is tightly abutted to the armrest seat component.

4. A rapidly adjustable armrest frame according to any of claims 1-3, wherein: the armrest seat assembly comprises a middle section rod body, a protecting cover and a seat body, wherein two ends of the middle section rod body are respectively connected with the protecting cover and the seat body;

the protective cover is provided with two U-shaped hoops, and the handrail frame body penetrates through the two U-shaped hoops; the both edges of protecting cover are provided with an arc recess respectively, the arc recess with U type staple bolt is used for the restriction the handrail support body is not hard up.

5. The rapidly adjustable armrest frame of claim 4, wherein: the number of the toothed plates is two, and the two toothed plates are arranged between the two U-shaped hoops at intervals; the adjustment handle is provided with two supplies the breach of stepping down that the pinion rack passed, the screens piece is fixed in the breach of stepping down.

6. The rapidly adjustable armrest frame of claim 4, wherein: a hinged support is arranged at one end of the middle rod body close to the protecting cover, two groups of mounting holes penetrate through the hinged support, and a group of alignment holes penetrate through the adjusting handle;

still include the pin, adjustment handle with the free bearing passes through the pin passes counterpoint hole and one of them is a set of the mounting hole is realized articulating, the torsional spring cover is established on the pin.

7. The rapidly adjustable armrest frame of claim 4, wherein: a connecting column is arranged on the seat body, one end of the middle section rod body is sleeved outside the connecting column, an annular groove is formed in the circumferential outer wall of the connecting column, a screw hole is formed in the middle section rod body, a limiting bolt is in threaded fit with the screw hole, and one end of the limiting bolt extends into the annular groove;

the top surface of the seat body is provided with a plurality of positioning holes, and the seat body further comprises a positioning mechanism, wherein the positioning mechanism is matched with the positioning holes and used for limiting the relative rotation of the middle section rod body and the seat body.

8. The rapidly adjustable armrest frame of claim 7, wherein: the positioning mechanism comprises a positioning cylinder, a positioning pin, an elastic piece, a pull rope and a handle;

the positioning cylinder is arranged at one end, close to the seat body, of the middle rod body, the top end of the positioning cylinder is provided with a sealing cover, and a gap is formed between the bottom end of the positioning cylinder and the top surface of the seat body;

the positioning pin is in sliding fit in the positioning cylinder, extends out of the bottom end of the positioning cylinder and is in splicing fit with the positioning hole; the elastic piece is arranged in the positioning cylinder, and two ends of the elastic piece are respectively connected with the sealing cover and the positioning pin;

the handle is arranged at the handheld end of the armrest frame body, one end of the inhaul cable is connected with the handle, and the other end of the inhaul cable penetrates through the sealing cover and then is connected with the positioning pin.

9. The rapidly adjustable armrest frame of claim 7, wherein: the base body is provided with a plurality of through holes.

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