WO2019210686A1

WO2019210686A1 - Shovel body angle adjustment apparatus for shovel

Info

Publication number: WO2019210686A1
Application number: PCT/CN2018/119628
Authority: WO
Inventors: 谭崇伟
Original assignee: Tan Chongwei
Priority date: 2018-05-03
Filing date: 2018-12-06
Publication date: 2019-11-07
Also published as: CN208128772U

Abstract

A shovel body angle adjustment apparatus for a shovel, comprising a shovel body connector (1) and an adjustment connector (2). The shovel body connector comprises a left side plate (11) and a right side plate (12); a plurality of left notches (111) are provided on the edge of the left side plate; a left locking pin (3) is provided on the side of the adjustment connector corresponding to the left side plate; the left locking pin is provided with a left pin cap (31), a left detaching portion (32), a left locking portion (33), and a left slide guide portion (34) along an axial direction from the outside to the inside; a gap is reserved between the outer surface of the left detaching portion and the edge of the left side plate; the left locking portion is able to be fitted in the left notches; the left slide guide portion is unable to pass the left notches; and the adjustment connector is provided with a spring (5) for providing elastic force to the left locking pin. On the basis of the apparatus, the angle adjustment operation of the shovel body is convenient and fast; the angle adjustment of the shovel body can be implemented by radially pressing the left locking pin and the right locking pin toward the adjustment connector; and the locking portion tightly fits the notches without any gap, so that the shovel body would not sway with respective to the adjustment connector.

Description

Shovel body angle conversion device of tool shovel

Technical field

The utility model belongs to the technical field of hand tools such as shovel and hoe, and more particularly to a shovel body angle conversion device of a tool shovel.

Background technique

The existing shovel head convertible angle tool shovel has a conversion joint including a fixing component and a movable component, and the movable component is separated from the shovel body by the movable component to be separated from the shovel body to realize the angular rotation of the shovel body. The locking is achieved by the movable member being moved forward against the fixed member against the shovel body.

At present, there are two types of conversion shovel for the shovel head that can be converted in the market. The conversion connector can be divided into two types. One type is that the movable part is linked with the fixed part through the elastic mechanism, and the shovel body is provided with a locking hole, which is movable. The front end of the component is provided with a locking tongue, and the locking member of the movable component is axially moved backward relative to the fixing component, so that the locking tongue of the movable component is disengaged from the locking hole on the shovel body to unlock the shovel body, and the elastic tongue is automatically reset by the elastic mechanism to make the locking tongue The locking mechanism realizes the locking of the shovel body. Although the tool shovel of this type has a fast shovel angle conversion speed, the cooperation between the shovel body and the movable component may sway, affecting the use, and the movable component and the shovel body The connection rigidity is not enough. In actual use, the shovel body is easily damaged by knocking, vibration, etc., causing looseness, and even the movable parts may be broken. The other type is that the movable parts are connected to the fixed parts through threads. By rotating the movable member to move back and forth relative to the fixed member to realize locking or unlocking of the shovel body by the movable member, the advantage of the tool shovel of the structure is the shovel body and the movable member The tightness does not loosen. The disadvantage is that the movable part needs to rotate a few times relative to the fixed part to provide sufficient space for the shovel body to rotate. When locking, it also needs to rotate several times. The operation time is also troublesome, and the shovel body angle is converted. Slow.

Summary of the invention

The purpose of the utility model is to solve the above problems, aim to improve the structure of the conversion joint of the tool shovel, to provide a shovel body switching angle operation, and the shovel body is not closely connected with the movable parts during use. Loose, quick-connecting connector structure with high stability, safe and practical tool shovel.

The utility model is realized by the following technical solutions.

The utility model relates to a shovel body angle conversion device of a tool shovel, which comprises a shovel body connecting piece and a conversion joint. The shovel body connecting piece is fixedly connected with the shovel body, and the front end of the conversion joint head and the shovel body connecting piece rotate. Connecting, a rear end of the conversion connector is provided with a connection boss or a connection notch connected to the shovel handle, the shovel body connector includes a left side plate and a right side plate spaced apart and perpendicular to the shovel body, The front end of the conversion connector is disposed between the left side plate and the right side plate, and is connected to the left side plate and the right side plate by a connecting nail. The left side plate is provided with a plurality of left bayonet ports on the edge thereof, and the conversion connection is One side of the head corresponding to the left side plate is radially provided with a left locking pin that can cooperate with the left bayonet and can move relative to the radial direction of the connecting head, the left locking pin includes a left locking pin body, and the left locking pin body The outer end is provided with a left pin cap, and the position of the left locking pin body adjacent to the left pin cap is sequentially provided with a left detaching portion, a left locking portion and a left guiding portion from the outer to the inner axial direction, and the left detaching portion is externally The surface is arranged to have a gap between the edge of the left side plate, The left locking portion is configured to be engaged with the left bayonet to engage with the left bayonet, and the left guide sliding portion is configured to be unable to pass through the left bayonet and cooperate with the left jack provided on the conversion connector, the conversion A spring is provided in the connector for providing a spring force for the left locking pin to move radially outward relative to the switching connector. In the above structure, when the left locking pin is pressed radially into the conversion joint so that the falling portion of the left locking pin is located in the left bayonet, the shovel body can be rotated relative to the switching joint to perform angle conversion, when the force on the left locking pin is cancelled When the left locking pin is radially displaced relative to the conversion joint of the spring, the left locking portion is re-carded in the left bayonet, and the shovel body cannot be rotated relative to the switching connector to realize the locking of the shovel body. The structure is simple and convenient to operate, and the shovel body angle conversion is fast and reliable.

Preferably, the cross-sectional shape of the left locking portion is matched with the shape of the left bayonet, and the left locking portion includes an inner end section and an outer end section, and the inner end section is disposed so as not to pass the left bayonet, and The inner end cross-sectional dimension is set to be larger than the outer end cross-sectional dimension, and the side between the inner end section and the outer end section of the left locking portion is a slope which smoothly transitions from the inner end section to the outer end section. Through the structure, the left locking portion is more likely to be caught in the left bayonet and the matching clearance between the left locking portion and the left bayonet can be reduced, and even the gap can be achieved, and the technical problem that the shovel body can be shaken relative to the switching connector can be effectively avoided.

Preferably, the left bayonet has a circular arc shape, and the inner end cross-sectional shape and the outer end cross-sectional shape of the left locking portion are both circular or elliptical, and two circular or elliptical shapes are concentrically arranged.

Preferably, the left bayonet has a rectangular shape, and the inner end cross-sectional shape and the outer end cross-sectional shape of the left locking portion are both square or rectangular, and two squares or rectangles are concentrically arranged.

Preferably, the edge of the right side plate is provided with a plurality of right bayonet symmetrical with the left bayonet, and the side of the conversion connector corresponding to the right side plate is radially disposed to be able to cooperate with the right bayonet and can be opposite a right locking pin that shifts the connecting rod to move radially, the right locking pin includes a right locking pin body, and an outer pin end of the right locking pin body is provided with a right pin cap, and the right locking pin body is located near the right pin cap a right detaching portion, a right locking portion and a right guiding portion are sequentially disposed from the outer to the inner axial direction, and an outer surface of the right detaching portion is disposed to have a gap with an edge of the right side plate, the right locking portion Provided to be able to be engaged in the right bayonet and engaged with the right bayonet, the right guide slide is disposed not to pass through the right bayonet and cooperate with the right jack provided on the conversion connector, the spring is disposed on the left latch Between the right locking pin and the right locking pin, the left locking pin and the right locking pin provide an elastic force to move radially outward relative to the conversion coupling. By setting the right locking pin, the connection tightness of the conversion connector and the shovel body can be further improved, and the connection is more stable and reliable.

Preferably, the cross-sectional shape of the right locking portion is matched with the shape of the right bayonet, and the right locking portion includes an inner end section and an outer end section, and the inner end section is disposed so as not to pass through the left bayonet The inner end cross-sectional dimension is set to be larger than the outer end cross-sectional dimension, and the side between the inner end section and the outer end section of the right locking portion is a slope which smoothly transitions from the inner end section to the outer end section. Through the structure, the right locking portion is more likely to be caught in the right bayonet and the matching clearance between the right locking portion and the right bayonet can be reduced, and even the gap can be achieved, and the technical problem that the shovel body will sway relative to the switching connector can be effectively avoided.

Preferably, the right bayonet has a circular arc shape, and the inner end cross-sectional shape and the outer end cross-sectional shape of the right locking portion are both circular or elliptical, and two circular or elliptical shapes are concentrically arranged.

Preferably, the right bayonet has a rectangular shape, and the inner end cross-sectional shape and the outer end cross-sectional shape of the right locking portion are both square or rectangular, and two squares or rectangles are concentrically arranged.

Preferably, the shovel body connector further comprises a bottom plate fixed to the shovel body by a rivet, the left side plate and the right side plate being integrally formed with the bottom plate perpendicular to the bottom plate. The structure facilitates separate processing of the shovel body and the shovel body connecting member, reduces the processing difficulty, and facilitates the connection of the shovel body connecting member and the shovel body.

Preferably, the rear end of the conversion joint is provided with a connection recess connected to the shovel handle, and the connection recess is provided with an internal thread. The structure can facilitate assembly or disassembly of the shovel body connector and the shovel handle.

The utility model has the advantages that the shovel body angle conversion operation is convenient and fast, and the angle conversion of the shovel body can be realized only by pressing the left lock pin and the right lock pin radially into the conversion joint; the locking portion of the lock pin The structural design reduces the matching clearance of the locking pin and the bayonet or even the gap, so that the locking pin and the bayonet are tightly coupled, thereby avoiding the problem that the shovel body is affected by the swaying of the shovel body.

DRAWINGS

Figure 1 is a schematic view of the exploded decomposition structure of the present invention.

Figure 2 is a schematic cross-sectional view of the utility model.

Fig. 3 is a cross-sectional structural view showing the combination of the left locking pin and the right locking pin of the present invention.

4 is a schematic perspective view showing the cooperation of the left and right locking pins and the shovel body connecting members of the present invention.

Figure 5 is a top plan view showing the cooperation of the left and right locking pins and the shovel body connecting members of the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2, the utility model relates to a shovel body angle conversion device of a tool shovel, comprising a shovel body connecting member 1 and a conversion joint 2, wherein the shovel body connecting member 1 comprises a bottom plate 13 and a left side plate. 11 and the right side plate 12, wherein the bottom plate 13 is fixedly connected to the shovel body 6 by the rivets 7, and the left side plate 11 and the right side plate 12 are spaced apart from each other and formed integrally with the bottom plate 13 perpendicularly to the bottom plate, and the front end of the conversion joint 2 is placed The left side plate 11 and the right side plate 12 are rotatably connected to the left side plate 11 and the right side plate 12 by connecting nails 8. As shown in FIG. 3, the rear end of the conversion connector 2 is provided with a connection with the shovel handle. The recess 22 is connected, and the connecting recess 22 is provided with an internal thread.

As shown in FIG. 1 , a plurality of left bayonet ports 111 are disposed on an edge of the left side plate 11 , and a side of the conversion connector 2 corresponding to the left side plate 11 is radially disposed to be engaged with the left bayonet 111 . The left locking pin 3 can be relatively moved in the radial direction of the connecting head 2. As shown in FIG. 3, the left locking pin 3 includes a left locking pin body, and the outer end of the left locking pin body is provided with a left pin cap 31, and the position of the left locking pin body near the left pin cap 31 is outward The inner axial direction is sequentially provided with a left detaching portion 32, a left locking portion 33 and a left guiding portion 34, wherein the left pin cap 31 is disposed so as not to pass through the left bayonet 111, and the outer surface of the left detaching portion 32 is disposed to be left A gap is left between the edges of the side plates 11, and the left locking portion 33 is disposed to be engaged with the left bayonet 111 to engage with the left bayonet 111, and the left guide slider 34 is disposed so as not to pass through the left bayonet 111. And cooperate with the left socket provided on the conversion connector 2, and the conversion connector 2 is provided with a spring 5 for providing a spring force for the left locking pin 3 to move radially outward relative to the conversion connector 2.

As shown in FIG. 4 and FIG. 5, in the embodiment provided by the present invention, the shape of the left bayonet 111 is a circular arc shape, and the left locking portion 33 includes an inner end section 332 and an outer end section 331, The shape of the left locking portion 33 is a truncated cone, and the inner end section 332 of the left locking portion 33 is a lower bottom surface of the truncated cone. The inner end section 332 is disposed so as not to pass through the left bayonet 111, and the left locking portion 33 The outer end section 331 is an upper bottom surface of the truncated cone, and the shape of the left locking portion 33 may be an elliptical frustum or the like. In the above structure, in the process of the left locking portion 33 being inserted into the left bayonet port 111, the small end of the left locking portion 33, that is, the upper bottom end of the circular table first enters the left bayonet port 111, and the left locking portion 33 and the left bayonet port 111 at this time. The gap between the left locking portion 33 is relatively easy to enter the left bayonet port 111, because the cross-sectional dimension of the left locking portion 33 gradually increases from the outer to the inner axial direction, and the left locking portion 33 is inserted into the left bayonet port. The depth of 111 increases, and the matching clearance between the left locking portion 33 and the left bayonet port 111 becomes smaller and smaller until it is close to no gap. At this time, the left locking pin 3 realizes the locking of the shovel body 6, and the left locking pin 3 The engagement with the left bayonet 111 is tight, and the shovel body 6 cannot be swayed relative to the changeover joint 2, and the locking effect of the left lock pin 3 on the shovel body 6 is good. Of course, in addition to the above structure, the shape of the left bayonet 111 may be other shapes, such as a shape of a rectangle. Accordingly, the cross-sectional shape of the left locking portion 33 matches the shape of the left bayonet 111, such as a left lock. The shape of the tight portion 33 may be a square frustum or the like as long as the inner end section 332 of the left locking portion 33 is larger in size than the outer end section 331 and the inner end section 332 and the outer end of the left locking portion 33 are The side surface between the sections 331 may be a slope which is smoothly transitioned from the inner end section 332 to the outer end section 331.

As a further improvement, as shown in FIG. 3 and FIG. 4 , the right side plate 12 is provided with a plurality of right bayonet 121 symmetrical with the left bayonet 111 , and the conversion connector 2 corresponds to the right side plate 12 . One side is radially provided with a right locking pin 4 that is engageable with the right bayonet 121 and is movable relative to the translational joint 2, the right locking pin 4 including a right locking pin body, the outer end of the right locking pin body A right pin cap 41 is provided, and a position of the right pin body adjacent to the right pin cap 41 is sequentially provided with a right detaching portion 42, a right locking portion 43, and a right guiding portion 44 from the outer to the inner axial direction, the right detaching portion The outer surface of the portion 42 is disposed to have a gap with the edge of the right side plate 12, and the right locking portion 43 is disposed to be engaged in the right bayonet 121 to cooperate with the right bayonet 121, the right guide portion 44 is disposed so as not to pass through the right bayonet 121. As shown in FIG. 1, the right guide portion 44 is engaged with the right insertion hole 21 provided on the conversion joint 2. As shown in FIG. 3, the spring 5 is disposed between the left locking pin 3 and the right locking pin 4 to provide elastic force for the left locking pin 3 and the right locking pin 4 to move radially outward relative to the conversion connector 2, in order to facilitate the spring 5 Fixing, a spring guide rod 35 can be integrally formed at the inner end of the left lock pin 3, and a guide groove 45 matching the spring guide rod 35 is disposed at the inner end of the right lock pin 4, and the guide groove 45 is The depth is greater than the length of the spring guide 35.

As shown in FIG. 2, in the present embodiment, in order to facilitate the installation of the spring 5, the conversion joint 2 is provided with a hollow passage 23, and the spring 5 can be inserted into the hollow passage 23 from the front end of the conversion joint 2, and then The left side of the conversion joint 2 is fitted into the left lock pin 3 so that the spring guide rod of the left lock pin 3 passes through the spring 5, and finally the right lock pin 4 is assembled from the right side of the conversion joint 2 to make the guide groove of the right lock pin 4. 45 is matched with the spring guide 35, and finally, a sealing member 9 is provided at the front end of the conversion joint 2 to seal the opening of the hollow passage 23.

In the embodiment provided by the present invention, as shown in FIG. 4, the shape of the right bayonet 121 is the same as that of the left bayonet 111, as shown in FIG. 3, the shape of the right locking portion 43 of the right locking pin 4. The structure and the left locking portion 33 of the left locking pin 3 have the same shape and structure.

The above is only one specific embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modification made by the utility model using the utility model concept falls into the protection of the utility model. Within the scope.

Claims

A shovel body angle conversion device of a tool shovel, comprising a shovel body connecting member and a conversion joint, the shovel body connecting member being fixedly connected with the shovel body, the front end of the conversion connector being rotatably connected with the shovel body connecting member, a rear end of the conversion joint is provided with a connection boss or a connection recess connected to the shovel handle, wherein the shovel body connection comprises a left side plate and a right side plate spaced apart and perpendicular to the shovel body, The front end of the conversion connector is disposed between the left side plate and the right side plate, and is connected to the left side plate and the right side plate by a connecting nail. The left side plate is provided with a plurality of left bayonet ports on the edge thereof, and the conversion connection is One side of the head corresponding to the left side plate is radially provided with a left locking pin that can cooperate with the left bayonet and can move relative to the radial direction of the connecting head, the left locking pin includes a left locking pin body, and the left locking pin body The outer end is provided with a left pin cap, and the position of the left locking pin body adjacent to the left pin cap is sequentially provided with a left detaching portion, a left locking portion and a left guiding portion from the outer to the inner axial direction, and the left detaching portion is externally The surface is arranged to have a gap between the edge of the left side plate, The left locking portion is configured to be engaged with the left bayonet to engage with the left bayonet, and the left guide sliding portion is disposed not to pass through the left bayonet and cooperate with the left jack provided on the conversion connector, the conversion connection A spring is provided in the head that provides an elastic force for the left locking pin to move radially outward relative to the switching joint.
The shovel body angle conversion device of the tool shovel according to claim 1, wherein a sectional shape of the left locking portion is matched with a shape of a left locking portion, and the left locking portion includes an inner end section and an outer end. a cross section, the inner end section is disposed not to pass through the left bayonet, and the inner end cross-sectional dimension is set to be larger than the outer end cross-sectional dimension, and the side between the inner end section and the outer end section of the left locking portion is A bevel with a smooth transition from the inner end section to the outer end section.
The shovel body angle conversion device of the tool shovel according to claim 2, wherein the left bayonet has a circular arc shape, and the inner end cross-sectional shape and the outer end cross-sectional shape of the left locking portion are both Round or oval, two round or elliptical concentric settings.
The shovel body angle conversion device of the tool shovel according to claim 2, wherein the left bayonet has a rectangular shape, and the inner end cross-sectional shape and the outer end cross-sectional shape of the left locking portion are square or A rectangle, two squares or a rectangle is set concentrically.
The shovel body angle conversion device of the tool shovel according to claim 1, wherein the right side plate is provided with a plurality of right bayonet symmetrical with the left bayonet, and the conversion connector corresponds to the right side. One side of the plate is radially provided with a right locking pin that can cooperate with the right bayonet and can move relative to the connecting head, the right locking pin includes a right locking pin body, and the outer end of the right locking pin body is provided with a right pin cap, wherein a position of the right locking pin body adjacent to the right pin cap is sequentially provided with a right disengaging portion, a right locking portion and a right guiding portion from an outer inward axial direction, and an outer surface of the right disengaging portion is disposed to a gap is left between the edges of the right side plate, the right locking portion is configured to be engaged in the right bayonet to cooperate with the right bayonet, and the right guiding portion is configured to pass through the right bayonet and to be connected with the conversion connector The right insertion hole is provided, and the spring is disposed between the left locking pin and the right locking pin to provide elastic force for the left locking pin and the right locking pin to move radially outward relative to the conversion connector.
The shovel body angle conversion device of a tool shovel according to claim 5, wherein a cross-sectional shape of the right locking portion is matched with a shape of a right locking portion, and the right locking portion includes an inner end section and an outer end. a cross section, the inner end section is disposed not to pass through the left bayonet, and the inner end cross-sectional dimension is set to be larger than the outer end cross-sectional dimension, and the side between the inner end section and the outer end section of the right locking portion is A bevel with a smooth transition from the inner end section to the outer end section.
The shovel body angle conversion device of the tool shovel according to claim 6, wherein the right bayonet has a circular arc shape, and the inner end cross-sectional shape and the outer end cross-sectional shape of the right locking portion are both Round or oval, two round or elliptical concentric settings.
The shovel body angle conversion device of the tool shovel according to claim 6, wherein the right bayonet has a rectangular shape, and the inner end cross-sectional shape and the outer end cross-sectional shape of the right locking portion are square or A rectangle, two squares or a rectangle is set concentrically.
The shovel body angle conversion device of the tool shovel according to claim 1, wherein the shovel body connecting member further comprises a bottom plate, and the bottom plate is fixedly connected to the shovel body by a rivet, the left side plate and the right side plate and the bottom plate. The integral molding is perpendicular to the bottom plate.
The shovel body angle conversion device of the tool shovel according to claim 1, wherein a rear end of the conversion joint is provided with a connection recess connected to the shovel, and the connection recess is provided with an internal thread.