阅读说明：本技术 割草机连接杆的连接管的衬管安装结构及割草机连接杆 (Liner tube mounting structure of connecting pipe of mower connecting rod and mower connecting rod ) 是由 陈曦 李新发 周亮 唐飞 佛罗兹·布修 于 2020-02-25 设计创作，主要内容包括：本发明公开了一种割草机连接杆的连接管的衬管安装结构及割草机连接杆,旨在提供一种能够在满足衬管安装的安规要求的情况下,简化衬管安装工序,提高衬管安装效率的割草机连接杆的连接管的衬管安装结构及割草机连接杆。它包括插装在连接管端部的衬管、轴向限位结构及径向限位结构。轴向限位结构包括设置在连接管的侧壁上的定位孔、设置在衬管上的第一弹性臂及设置在第一弹性臂上用于与定位孔配合的定位块。径向限位结构包括设置在连接管的侧壁上的卡口、设置在衬管上的第二弹性臂、设置在第二弹性臂上的限位卡块及设置在限位卡块上的限位卡槽。当定位块插设在定位孔内时,卡口的侧壁伸入限位卡槽内。(The invention discloses a liner tube mounting structure of a connecting tube of a connecting rod of a mower and the connecting rod of the mower, and aims to provide the liner tube mounting structure of the connecting tube of the connecting rod of the mower and the connecting rod of the mower, which can simplify the liner tube mounting process and improve the liner tube mounting efficiency under the condition of meeting the safety requirements of liner tube mounting. The device comprises a liner tube inserted at the end part of a connecting tube, an axial limiting structure and a radial limiting structure. The axial limiting structure comprises a positioning hole formed in the side wall of the connecting pipe, a first elastic arm arranged on the liner pipe and a positioning block arranged on the first elastic arm and used for being matched with the positioning hole. The radial limiting structure comprises a bayonet arranged on the side wall of the connecting pipe, a second elastic arm arranged on the liner pipe, a limiting clamping block arranged on the second elastic arm and a limiting clamping groove arranged on the limiting clamping block. When the locating block is inserted in the locating hole, the side wall of the bayonet extends into the limiting clamping groove.)

1. A liner tube mounting structure of a connecting tube of a mower connecting rod comprises a liner tube inserted at the end part of the connecting tube, and is characterized by further comprising an axial limiting structure and a radial limiting structure, wherein the axial limiting structure comprises a positioning hole formed in the side wall of the connecting tube, a first elastic arm arranged on the liner tube and a positioning block arranged on the first elastic arm and used for being matched with the positioning hole, and the positioning block is inserted into the positioning hole; radial limit structure is including setting up bayonet socket on the lateral wall of connecting pipe, setting up the second elastic arm on the bushing pipe, setting up spacing fixture block on the second elastic arm and setting up the spacing draw-in groove on spacing fixture block, spacing fixture block can be along the axial displacement of connecting pipe in the bayonet socket, the opening of spacing draw-in groove is towards the tip of bushing pipe, works as when the locating piece is inserted and is established in the locating hole, the lateral wall of bayonet socket stretches into in the spacing draw-in groove to the radial movement of limiting spacing fixture block along the connecting pipe.

2. The structure of claim 1, wherein the bayonet is formed in a bar shape, and a length direction of the bayonet is parallel to an axial direction of the connection pipe.

3. The attachment structure of a connecting pipe for a lawn mower connecting rod as set forth in claim 1, wherein said positioning hole and said locking notch are formed to be offset from each other in an axial direction of said connecting pipe.

4. A mounting arrangement for a bush of a connecting tube of a mower connecting rod as claimed in claim 1, 2 or 3 wherein said first resilient arm and said second resilient arm are provided on opposite sides of said bush.

5. The structure of claim 1, 2 or 3, wherein the sleeve is further provided with an annular stopper at one end, the annular stopper is located outside the connecting pipe, and the annular stopper abuts against the end surface of the connecting pipe.

6. The structure of installing a bushing of a connecting pipe of a mower connecting rod as claimed in claim 1, 2 or 3, wherein said connecting pipe is a metal pipe.

7. A mower connecting rod using a liner mounting structure of a connecting pipe of the mower connecting rod according to any one of claims 1 to 6, comprising at least two connecting pipes, wherein any two adjacent connecting pipes are connected through a sleeve assembly, the sleeve assembly comprises an outer sleeve and a liner mounting structure, the end portions of the two adjacent connecting pipes extend into the outer sleeve, the liner mounting structure is arranged at the end portions of the connecting pipes extending into the outer sleeve, and pipe clamps for tightly holding the connecting pipes are arranged at the two ends of the outer sleeve and used for tightly holding the connecting pipes and tightly fixing the connecting pipes inserted into the outer sleeve on the outer sleeve.

8. The mower connecting rod of claim 7, wherein the inner wall of the outer sleeve is provided with axial grooves corresponding to the limiting blocks of the bushing mounting structure one to one, the axial grooves extend in the axial direction of the outer sleeve, one end of each axial groove is communicated with the end of the outer sleeve, and the limiting blocks of the bushing mounting structure extend into the corresponding axial grooves.

9. The mower connecting rod of claim 7, wherein the bushing tube mounting structure further comprises a limiting protrusion on an outer side surface of the bushing tube, the connecting tube is provided with a protrusion opening at one end for inserting the bushing tube, the outer sleeve is provided with a limiting groove corresponding to the limiting protrusion of the bushing tube mounting structure, the limiting protrusion extends into the protrusion opening of the connecting tube, and the limiting protrusion further extends into the corresponding limiting groove.

Technical Field

The invention relates to a mower, in particular to a liner tube mounting structure of a connecting tube of a mower connecting rod and the mower connecting rod.

Background

The connecting rod of the mower is used for being held by a user, so that the connecting rod of the mower has high strength requirement and needs to meet the specified safety requirement. The connecting rod of present lawn mower generally adopts the metal to make, for example the aluminum pipe, and the connecting rod of lawn mower divide into the integral type and the concatenation combination formula, and wherein, the connecting rod of concatenation combination formula is that the multistage connecting pipe passes through bushing assembly to be connected as an organic wholely. At present, the tip of the connecting pipe of concatenation combination formula connecting rod generally is equipped with the bushing pipe, and the bushing pipe passes through the buckle with the connecting pipe to be connected, is equipped with the locating hole on the lateral wall of connecting pipe promptly, is equipped with bushing pipe elastic arm on the bushing pipe, be equipped with on the bushing pipe elastic arm be used for with locating hole complex screens piece, the screens piece is inserted and is established in the locating hole to make the bushing pipe connect on the connecting pipe. Because the liner tube is connected with the connecting tube through the buckle, the clamping block of the buckle connecting structure is easy to rebound, for example, the clamping block is pressed to move in the liner tube, so that the buckle connecting structure fails, and the current buckle connecting structure cannot meet the safety requirement of liner tube installation; in order to solve the problem, the metal snap spring additionally added to the liner tube is installed at present to assist the fixing and clamping block, so that the safety requirement of liner tube installation can be met, the liner tube installation needs two installation procedures, namely, the liner tube is inserted into one end of the connecting tube, then the metal snap spring is installed in the liner tube, and the metal snap spring is inconvenient to install, so that the liner tube on the connecting tube of the existing splicing and combining type connecting rod is difficult to install, and the installation efficiency is low.

Disclosure of Invention

The invention aims to provide a liner installation structure of a connecting pipe of a mower connecting rod and the mower connecting rod, which can simplify a liner installation process and improve liner installation efficiency under the condition of meeting the safety requirements of liner installation.

The technical scheme of the invention is as follows:

a liner tube mounting structure of a connecting tube of a mower connecting rod comprises a liner tube inserted at the end part of the connecting tube, an axial limiting structure and a radial limiting structure, wherein the axial limiting structure comprises a positioning hole arranged on the side wall of the connecting tube, a first elastic arm arranged on the liner tube and a positioning block arranged on the first elastic arm and used for being matched with the positioning hole, and the positioning block is inserted in the positioning hole; radial limit structure is including setting up bayonet socket on the lateral wall of connecting pipe, setting up the second elastic arm on the bushing pipe, setting up spacing fixture block on the second elastic arm and setting up the spacing draw-in groove on spacing fixture block, spacing fixture block can be along the axial displacement of connecting pipe in the bayonet socket, the opening of spacing draw-in groove is towards the tip of bushing pipe, works as when the locating piece is inserted and is established in the locating hole, the lateral wall of bayonet socket stretches into in the spacing draw-in groove to the radial movement of limiting spacing fixture block along the connecting pipe.

In the scheme, the positioning block of the axial limiting structure is inserted into the positioning hole to limit the liner tube to move along the axial direction of the connecting tube; the side wall of the bayonet of the radial limiting structure extends into the limiting clamping groove to limit the limiting fixture block to move along the radial direction of the connecting pipe, so that the limiting fixture block cannot rebound, namely the limiting fixture block cannot move in the connecting pipe under the pressure, and the liner pipe is reliably arranged at the end part of the connecting pipe through the liner pipe mounting structure to meet the safety requirement of liner pipe mounting; meanwhile, the liner tube is convenient to install, specifically, when the liner tube is installed, the liner tube is inserted into the end opening of the connecting tube in place, in the process that the liner tube is inserted into the end opening of the connecting tube, the limiting clamping block is firstly clamped into the clamping opening, then, the liner tube is continuously inserted into the connecting tube until the positioning block is clamped into the positioning hole (the limiting clamping block moves in the clamping opening along the axial direction of the connecting tube in the process), and after the positioning block is clamped into the positioning hole, the side wall of the clamping opening extends into the limiting clamping opening to limit the limiting clamping block to move along the radial direction of the connecting tube; the installation of bushing pipe is accomplished so far, and its simple to operate can effectively simplify bushing pipe installation process under the condition that satisfies the ann rule requirement of bushing pipe installation, improves bushing pipe installation effectiveness.

Preferably, the bayonet is in a strip shape, and the length direction of the bayonet is parallel to the axial direction of the connecting pipe. So, can reduce the width of bayonet socket under the condition that does not influence spacing fixture block along the axial displacement of connecting pipe in the bayonet socket, make spacing fixture block card go into behind the bayonet socket, spacing fixture block can cooperate with the bayonet socket to the restriction bushing pipe rotates.

Preferably, the positioning holes and the bayonets are distributed in a staggered manner in the axial direction of the connecting pipe. Thus, the installation stability of the liner tube can be improved.

Preferably, the first resilient arm and the second resilient arm are on opposite sides of the liner. Thus, the installation stability of the liner tube can be improved.

Preferably, one end of the liner tube is further provided with an annular limiting block, the annular limiting block is located on the outer side of the connecting tube, and the annular limiting block abuts against the end face of the connecting tube. So, can insert the intraoral position of connecting pipe end to the bushing pipe through annular stopper and carry on spacingly, the actual installation of the bushing pipe of being convenient for to be favorable to improving the installation stability of bushing pipe.

Preferably, the connecting tube is a metal tube.

The utility model provides a lawn mower connecting rod, includes two piece at least connecting pipes, and two arbitrary adjacent connecting pipes are connected through bushing assembly, characterized by, bushing assembly includes outer tube and bushing pipe mounting structure, and the tip that is located two adjacent connecting pipes stretches into in the outer tube, and the tip that stretches into the connecting pipe in the outer tube all is provided with bushing pipe mounting structure, the both ends of outer tube all are equipped with the pipe clamp that is used for embracing the connecting pipe tightly, the pipe clamp will be inserted the connecting pipe of establishing in the outer tube and embrace tightly to fix on the outer tube. Therefore, two adjacent connecting pipes can be connected into a whole through the sleeve pipe assembly stably and reliably.

Preferably, the inner wall of the outer sleeve is provided with axial grooves which are in one-to-one correspondence with the limiting clamping blocks of the liner tube mounting structure, the axial grooves extend along the axial direction of the outer sleeve, one end of each axial groove is communicated with the end part of the outer sleeve, and the limiting clamping blocks of the liner tube mounting structure extend into the corresponding axial grooves. Because have on the inner wall of outer tube with spacing fixture block complex axial recess, so, the outer tube will become dedicated outer tube, make current outer tube on the market can't use on the lawn mower connecting rod of this scheme to avoid the consumer, increase the quantity of connecting pipe by oneself, the length of extension lawn mower connecting rod, and the intensity that leads to the lawn mower connecting rod reduces, and the problem that produces the potential safety hazard.

Preferably, the outer side surface of the liner tube mounting structure is further provided with a limiting lug, one end of the connecting tube, used for inserting the liner tube, is provided with a lug through hole, the outer sleeve is provided with a limiting groove in one-to-one correspondence with the limiting lug of the liner tube mounting structure, the limiting lug stretches into the lug through hole on the connecting tube, and the limiting lug also stretches into the corresponding limiting groove. Therefore, the connection stability of the two connecting pipes connected with the sleeve assembly can be further improved.

The invention has the beneficial effects that: can make things convenient for the installation of bushing pipe under the condition that satisfies the ann's rule requirement of bushing pipe installation, effectively simplify bushing pipe installation process, improve bushing pipe installation effectiveness.

Drawings

Fig. 1 is a schematic structural view of a liner installation structure of a connecting pipe of a mower connecting rod according to a first embodiment of the present invention before assembly.

Fig. 2 is a schematic assembled structure of the liner installation structure of the connecting pipe of the mower connecting rod according to the first embodiment of the present invention.

Fig. 3 is a schematic structural view of a mower connecting rod according to a second embodiment of the present invention.

In the figure:

a connecting pipe 1;

a liner tube 2;

the positioning device comprises an axial limiting structure 3, a positioning hole 3.1, a first elastic arm 3.2 and a positioning block 3.3;

the limiting device comprises a radial limiting structure 4, a bayonet 4.1, a second elastic arm 4.2, a limiting clamping block 4.3 and a limiting clamping groove 4.4;

an annular stop block 5;

a limit bump 6;

a bump through opening 7;

an outer sleeve 8, an axial groove 8.1 and a limit groove 8.2;

a pipe clamp 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.

In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.