Joint structure of extension rod

Abstract

The utility model belongs to the technical field of electric tools, and particularly relates to a joint structure of an extension rod, which comprises a first rod body and a second rod body, the first rod body and the second rod body are fixedly connected through a locking device, both the first rod body and the second rod body are tubular, and a plug and a socket are respectively arranged on the first rod body and the second rod body. The locking device comprises a connecting sleeve fixedly arranged on the first rod body and a locking sleeve movably arranged on the second rod body; the plug is arranged in the connecting sleeve, a plug hole is formed in the connecting sleeve, a second guiding part is arranged on the side wall of the plug hole, a second guiding groove matched with the second guiding part is formed in the socket or the second rod body, and the socket penetrates into the connecting sleeve through guiding of the second guiding part and the second guiding groove and is matched with the plug. The locking sleeve drives the plug and the socket to be tightly matched and enables the first rod body and the second rod body to be relatively fixed. The connector structure of the extension rod is convenient to store and store and long in service life.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric tool technical field, especially joint structure of extension rod. BACKGROUND

[0002] Electric tool refers to the tool that through electric power as energy source and through transmission mechanism to drive operation work head.

[0003] In order to facilitate user to use, the extension rod is arranged between the handle and the work head of some electric tools, thereby facilitating user to carry out remote operation through electric tool, the extension rod on some electric tools is integrally arranged, but this extension rod is longer, influences the storage of electric tool, and the extension rod on some electric tools is telescopic structure, such as the long rod type electric tool disclosed in Chinese utility model patent CN 202020231547.3, which comprises: a work assembly, including a work element for outputting work and a motor for driving the work element;Rod system, the rod system is detachably adapted to the work assembly, and the rod system comprises: a holding portion for a user to hold;Power supply, the power supply is electrically connected to the work assembly for power supply;Switch, installed to the holding portion, for controlling the motor operation;Long rod assembly, the long rod assembly is connected to the holding portion and at least includes relatively telescopic first connecting rod and second connecting rod;The long rod assembly includes mounting device for mounting the work assembly, and the work assembly is implemented as at least two work assemblies, wherein at least one of the work assemblies is provided with an extension rod at one end, the extension rod is connected to the mounting device to mount the work assembly, and the maximum length of the long rod type electric tool is greater than or equal to 3.5 m. The long rod type electric tool can meet the length requirement of different long rod type electric tools and reduce user fatigue.

[0004] Although the long rod assembly on the above electric tool can be telescopic, the wire in the long rod assembly is prone to bending and stretching during telescopic process, thereby affecting the loose connection of the wire and even breaking, and affecting the normal use of the electric tool. UTILITY MODEL CONTENTS

[0005] In order to overcome the deficiencies and problems of the prior art, the utility model provides a joint structure of extension rod which is convenient to store and has long service life.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a joint structure of extension rod, including detachable connection first rod body and second rod body, and first rod body and second rod body are fixedly connected through locking device, first rod body and second rod body are tubular, and first rod body and second rod body are provided with the plug and the socket that mutually adapt respectively, the plug and the socket can be connected with power supply or electric appliance through electric wire, and the locking device includes the connecting sleeve fixedly arranged on the first rod body and the locking sleeve movably arranged on the second rod body,

[0008] The plug is arranged in the connecting sleeve, the connecting sleeve is provided with a plug-in hole, the side wall of the plug-in hole is provided with a second guide part, the second rod body is provided with a second guide groove matched with the second guide part, the socket is guided into the connecting sleeve through the second guide part and the second guide groove and matched with the plug, the locking sleeve drives the plug and the socket to be closely matched and makes the first rod body and the second rod body be relatively fixed.

[0009] The utility model further sets up: the side wall of the plug-in hole is further provided with a first guide part, the first rod body is provided with a first guide groove matched with the first guide part, the first rod body is inserted in the plug-in hole, and the first guide part is matched with the first guide groove to make the connecting sleeve and the first rod body be positioned and connected, and the socket and the plug are prevented from being inclined and dislocated.

[0010] The utility model further sets up: the first rod body and the second rod body are respectively provided with a first positioning part and a second positioning part, the plug and the socket are respectively provided with a first positioning groove and a second positioning groove, the first positioning part is matched with the first positioning groove to make the plug and the first rod body be positioned and connected, and the second positioning part is matched with the second positioning groove to make the socket and the second rod body be positioned and connected.

[0011] The utility model further sets up: the side wall of the first rod body is extruded towards the inside to form the first guide groove, and the first positioning part is formed on the inside of the first rod body, the side wall of the second rod body is extruded towards the inside to form the second guide groove, and the second positioning part is formed on the inside of the second rod body.

[0012] The utility model further sets up: the first rod body and the second rod body are same in cross section, the second guide part can be matched with the first guide groove, and the first guide part can be matched with the second guide groove.

[0013] The utility model further sets up: the first guide part and the second guide part are same in cross section, the first guide part is arranged in the extension direction of the second guide part, and the first guide part is symmetrically arranged on both sides.

[0014] The utility model further sets up: the connecting sleeve is relatively fixed with the first rod body through the fastener, the plug-in hole is provided with a positioning convex edge, the first convex edge is arranged on the periphery of the plug, the first convex edge is abutted on the positioning convex edge on the first rod body, and the plug and the first rod body are prevented from being accidentally separated.

[0015] The utility model further sets up: first convex edge and socket respectively abut in positioning convex edge both sides to make the plug and socket positioning cooperation, and the plug or socket crosses the positioning convex edge and makes the plug and socket connect.

[0016] The utility model further sets up: socket is provided with the plug -in part, and the plug -in part is inserted in the second rod body, and the plug -in part is provided with the elastic clamping hook, and the second rod body side wall is provided with the hook groove matched with the elastic clamping hook.

[0017] The utility model further sets up: the second rod body is detachably provided with the limiting sleeve through the fastener, and the locking sleeve is provided with the necking, and the limiting sleeve is arranged in the locking sleeve, and the necking side abuts on the limiting sleeve to make the drive first rod body and the second rod body relative fixed, and make the plug and socket close cooperation.

[0018] The utility model has the advantages compared with prior art:

[0019] 1, the utility model discloses a first rod body and second rod body can detachable connection, and first rod body and second rod body are provided with the plug and socket that is matched with each other respectively, when electric tool is not used, the user can detach first rod body and second rod body to be convenient for the storage of extension pole, and the user can control the plug and socket to detach or connect, can control the circuit in extension pole to disconnect or connect, and the installation of first rod body and second rod body will not lead to the electric wire in electric tool loose even disconnect, is favorable to the service life of extension electric tool, is convenient for the user to use, and the setting of second guide part and second guide groove is favorable to the connection of plug and socket is oriented, avoids the plug and socket deflection misplacement and influences the assembly of extension pole.

[0020] 2, the utility model discloses the setting of first guide part and first guide groove is convenient for the positioning installation of first rod body and connecting sleeve, and the positioning cooperation of plug and socket is convenient, and the setting of first positioning part and first positioning groove is convenient for the positioning installation of plug and first rod body, and the setting of second positioning part and second positioning groove is convenient for the positioning installation of socket and second rod body, and the quick assembly production of extension pole is convenient.

[0021] 3, the utility model discloses the first guide groove, first positioning part, second guide groove and second positioning part formed by extrusion are convenient for the production and processing of first rod body and second rod body, and are favorable to reduce production cost, and the first rod body and second rod body of same cross section are convenient for the flexible assembly of first rod body, second rod body and locking device, and it is convenient for producer to reduce the same section bar production first rod body and second rod body, thereby reducing the part kind required in the production process of extension pole, and it is favorable to reduce production cost, and because first guide part and second guide part cross section are same, and first guide part both sides are symmetrically set up, it is convenient for the both ends of first rod body and second rod body to cooperate with plug -in hole respectively, and it is convenient for the flexible assembly of extension pole.

[0022] 4、The first convex edge and the positioning convex edge are convenient for positioning and installation of the plug, can avoid separation of the plug from the first rod body under stress, avoid accidental damage of the extension rod, and are beneficial to prolonging the service life of the extension rod; the first convex edge and the socket are respectively abutted on both sides of the positioning convex edge, and damage of the plug and the socket caused by excessive stress is avoided.

[0023] 5、The plug-in part, the elastic clamping hook and the hook groove are convenient for quick assembly production of the socket and the second rod body, and are convenient for production and processing of the extension rod; the detachable limiting sleeve is convenient for flexible production of the second rod body by the producer, is convenient for production and processing of the extension rod, the necking is convenient for relative sliding of the locking sleeve along the second rod body, and is convenient for driving the plug and the socket to be closely matched. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic view of the utility model;

[0025] Figure 2 is a sectional view of the utility model;

[0026] Figure 3 is an explosion schematic view of the utility model;

[0027] Figure 4 is a sectional view of the first rod body in the utility model;

[0028] Figure 5 is a connecting structure schematic view of the limiting sleeve and the second rod body in the utility model;

[0029] Figure 6 is a structural schematic view of the limiting sleeve in the utility model;

[0030] Figure 7 is a sectional view of the connecting sleeve in the utility model;

[0031] Figure 8 is a sectional view of the locking sleeve in the utility model;

[0032] Figure 9 is a structural schematic view of the plug in the utility model;

[0033] Figure 10 is a structural schematic view of the socket in the utility model.

[0034] In the drawing: 1-first rod body; 11-first guide groove; 12-first positioning part; 13-first connecting hole; 2-second rod body; 21-second guide groove; 22-second positioning part; 23-hook groove; 24-limiting sleeve;

[0035] 241 - third guide portion; 3 - locking device; 4 - connecting sleeve; 41 - insertion hole; 42 - first guide portion; 43 - positioning protrusion; 44 - second connecting hole; 45 - external thread; 46 - second guide portion; 5 - locking sleeve; 51 - necked portion; 52 - internal thread; 6 - plug; 61 - electrical connector; 62 - first protrusion; 63 - first positioning groove; 7 - socket; 71 - electrical connector hole; 72 - second protrusion; 73 - second positioning groove; 74 - elastic hook; 75 - insertion portion. DETAILED DESCRIPTION

[0036] For the convenience of those skilled in the art, the utility model will be further described below in combination with the drawings and specific embodiments.

[0037] As Figures 1 to 10 shown, a joint structure of an extension rod, comprising a first rod body 1 and a second rod body 2 connected detachably, the first rod body 1 and the second rod body 2 are fixedly connected through a locking device 3, the first rod body 1 and the second rod body 2 are both tubular, the first rod body 1 and the second rod body 2 are respectively provided with mutually adapted plugs 6 and sockets 7, the plugs 6 and the sockets 7 can be electrically connected with a power supply or an electrical appliance through an electric wire, the locking device 3 comprises a connecting sleeve 4 fixedly arranged on the first rod body 1 and a locking sleeve 5 movably arranged on the second rod body 2; the plug 6 is arranged in the connecting sleeve 4, and the connecting sleeve 4 is provided with an insertion hole 41, the second guide portion 46 is arranged on the side wall of the insertion hole 41, the second rod body 2 or the socket 7 is provided with a second guide groove 21 adapted to the second guide portion 46, the socket 7 is guided into the connecting sleeve 4 through the second guide portion 46 and the second guide groove 21 and cooperates with the plug 6, the locking sleeve 5 drives the plug 6 and the socket 7 to tightly cooperate and relatively fixes the first rod body 1 and the second rod body 2, in the structure, since the first rod body 1 and the second rod body 2 are connected detachably, and the first rod body 1 and the second rod body 2 are respectively provided with mutually adapted plugs 6 and sockets 7, when the electric tool is not used, the user can detach the first rod body 1 and the second rod body 2, thereby facilitating the storage of the extension rod, the user can control the plug 6 and the socket 7 to be detached or connected, that is, the user can control the circuit in the extension rod to be disconnected or connected, the detachment and installation of the first rod body 1 and the second rod body 2 will not cause the electric wire in the electric tool to be loose or even disconnected, which is beneficial to prolong the service life of the electric tool, facilitates the user to use, and the arrangement of the second guide portion 46 and the second guide groove 21 is beneficial to guiding the connection of the plug 6 and the socket 7, avoiding the plug 6 and the socket 7 to be skewed and misaligned to affect the assembly of the extension rod.

[0038] The plug 6 is provided with an electric connector 61, the socket 7 is provided with an electric connector hole 71 matched with the electric connector 61, the plug 6 and the socket 7 are respectively provided with an electric connection with a power supply and an electric appliance through an electric wire, the plug 6 is connected with the socket 7 to electrically connect the power supply with the electric appliance, and the connecting sleeve 4 is threadedly connected with the locking sleeve 5, the outer periphery of the connecting sleeve 4 is provided with an external thread 45, and the inner side of the locking sleeve 5 is provided with an internal thread 52 matched with the external thread 45.

[0039] The first guiding part 42 is further arranged on the side wall of the insertion hole 41, the first guiding groove 11 matched with the first guiding part 42 is arranged on the first rod body 1, the first rod body 1 is inserted into the insertion hole 41, the first guiding part 42 and the first guiding groove 11 are matched to positionally connect the connecting sleeve 4 with the first rod body 1, and to avoid the socket 7 and the plug 6 from being skewed and misaligned, and the first guiding part 42 and the first guiding groove 11 are arranged to facilitate the positional installation of the first rod body 1 and the connecting sleeve 4, and facilitate the positional cooperation of the plug 6 and the socket 7.

[0040] The first rod body 1 and the second rod body 2 are respectively provided with the first positioning part 12 and the second positioning part 22, the plug 6 and the socket 7 are respectively provided with the first positioning groove 63 and the second positioning groove 73, the first positioning part 12 is matched with the first positioning groove 63 to positionally connect the plug 6 with the first rod body 1, the second positioning part 22 is matched with the second positioning groove 73 to positionally connect the socket 7 with the second rod body 2, the first positioning part 12 and the first positioning groove 63 facilitate the positional installation of the plug 6 with the first rod body 1, and the second positioning part 22 and the second positioning groove 73 facilitate the positional installation of the socket 7 with the second rod body 2, and facilitate the quick assembly and production of the extension rod.

[0041] The first guiding groove 11 is formed by extruding the side wall of the first rod body 1 inward, and the first positioning part 12 is formed on the inner side of the first rod body 1, the second guiding groove 21 is formed by extruding the side wall of the second rod body 2 inward, and the second positioning part 22 is formed on the inner side of the second rod body 2, which facilitates the production and processing of the first rod body 1 and the second rod body 2, and is beneficial to reduce the production cost.

[0042] The first rod body 1 and the second rod body 2 have the same cross section, the second guiding part 46 can be matched with the first guiding groove 11, and the first guiding part 42 can be matched with the second guiding groove 21, the first rod body 1 and the second rod body 2 with the same cross section facilitate the flexible assembly of the first rod body 1, the second rod body 2 and the locking device 3, facilitate the producer to reduce the same profile to produce the first rod body 1 and the second rod body 2, thereby reducing the types of parts required in the production process of the extension rod, and being beneficial to reduce the production cost.

[0043] The first guide part 42 and the second guide part 46 are the same in cross section, the first guide part 42 is arranged in the extension direction of the second guide part 46, and the first guide part 42 is symmetrically arranged on both sides, which facilitates the cooperation of the two ends of the first rod body 1 and the second rod body 2 with the plug-in hole 41, and facilitates flexible assembly of the extension rod.

[0044] The connecting sleeve 4 is provided with a second connecting hole 44, the first rod body is provided with a first connecting hole 13, the fastener passes through the first connecting hole 13 and the second connecting hole 44 and relatively fixes the connecting sleeve 4 and the first rod body 1, the plug-in hole 41 is provided with a positioning convex edge 43, the plug 6 is provided with a first convex edge 62 on the outer periphery, the first rod body 1 abuts the first convex edge 62 on the positioning convex edge 43, so that the plug 6 and the first rod body 1 are prevented from being accidentally separated, the first convex edge 62 and the positioning convex edge 43 are arranged to facilitate positioning and installation of the plug 6, and the plug 6 can be prevented from being separated from the first rod body 1 under stress, accidental damage of the extension rod is avoided, and the service life of the extension rod is prolonged.

[0045] The first convex edge 62 and the socket 7 abut on both sides of the positioning convex edge 43 respectively, so that the plug 6 and the socket 7 are positioned and matched, and the plug 6 or the socket 7 passes the positioning convex edge 43 and connects the plug 6 and the socket 7, and the structure can prevent the plug 6 and the socket 7 from being damaged due to excessive stress.

[0046] The socket 7 is provided with a second convex edge 72 in the embodiment, the first convex edge 62 and the second convex edge 72 abut on both sides of the positioning convex edge 43 respectively, and the end of the second rod body 2 abuts on the second convex edge 72 and drives the second convex edge 72 to abut on the positioning convex edge 43.

[0047] The socket 7 is provided with a plug-in part 75, the plug-in part 75 is inserted into the second rod body 2, the plug-in part 75 is provided with an elastic clamping hook 74, the side wall of the second rod body 2 is provided with a hook groove 23 matched with the elastic clamping hook 74, and the plug-in part 75, the elastic clamping hook 74 and the hook groove 23 are arranged to facilitate quick assembly and production of the socket 7 and the second rod body 2, and facilitate production and processing of the extension rod.

[0048] The second rod body 2 is detachably provided with a limiting sleeve 24 through a fastener, the locking sleeve 5 is provided with a necked part 51, the limiting sleeve 24 is inserted into the locking sleeve 5, and one side of the necked part 51 abuts on the limiting sleeve 24 to drive the first rod body 1 and the second rod body 2 to be relatively fixed, and the plug 6 and the socket 7 are tightly matched, and the detachable limiting sleeve 24 facilitates flexible production of the second rod body 2 by the producer as needed, facilitates production and processing of the extension rod, and the necked part 51 facilitates relative sliding of the locking sleeve 5 along the second rod body 2, and facilitates tight matching of the plug 6 and the socket 7 driven by the locking sleeve 5.

[0049] The limiting sleeve 24 is annular and sleeved on the second rod body 2, and a third guide part 241 matched with the second guide groove 21 is arranged on the inner side of the limiting sleeve 24, and the third guide part 241 cooperates with the second guide groove 21 to limit the relative rotation of the limiting sleeve 24 and the second rod body 2.

[0050] The above embodiments are only preferred embodiments of the utility model, and do not limit the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A joint structure of an extension rod comprising a first rod body (1) and a second rod body (2) which are detachably connected, the first rod body (1) and the second rod body (2) being fixedly connected by a locking device (3), characterized in that: The first rod body (1) and the second rod body (2) are both tubular, and the first rod body (1) and the second rod body (2) are respectively provided with a plug (6) and a socket (7) that are adapted to each other, the plug (6) and the socket (7) can be electrically connected with a power supply or an electrical appliance through an electric wire, and the locking device (3) comprises a connecting sleeve (4) fixedly arranged on the first rod body (1) and a locking sleeve (5) movably arranged on the second rod body (2); The plug (6) is arranged in the connecting sleeve (4), and the connecting sleeve (4) is provided with a plug-in hole (41), the plug-in hole (41) is provided with a second guide portion (46) on the side wall, the socket (7) or the second rod body (2) is provided with a second guide groove (21) adapted to the second guide portion (46), the socket (7) is guided into the connecting sleeve (4) through the second guide portion (46) and the second guide groove (21) and cooperates with the plug (6), and the locking sleeve (5) drives the plug (6) and the socket (7) to be tightly matched and makes the first rod body (1) and the second rod body (2) relatively fixed.

2. A joint structure for an extension rod according to claim 1, characterized in that: The side wall of the plug-in hole (41) is further provided with a first guide portion (42), the first rod body (1) is provided with a first guide groove (11) adapted to the first guide portion (42), the first rod body (1) is inserted into the plug-in hole (41), and the first guide portion (42) and the first guide groove (11) cooperate to make the connecting sleeve (4) and the first rod body (1) be positioned and connected, and the socket (7) and the plug (6) are prevented from being skewed and misaligned.

3. A joint structure for an extension rod according to claim 2, characterized in that: The first rod body (1) and the second rod body (2) are respectively provided with a first positioning portion (12) and a second positioning portion (22), the plug (6) and the socket (7) are respectively provided with a first positioning groove (63) and a second positioning groove (73), the first positioning portion (12) and the first positioning groove (63) cooperate to make the plug (6) and the first rod body (1) be positioned and connected, and the second positioning portion (22) and the second positioning groove (73) cooperate to make the socket (7) and the second rod body (2) be positioned and connected.

4. A joint structure for an extension rod according to claim 3, wherein: The side wall of the first rod body (1) is extruded inwardly to form the first guide groove (11), and the first positioning portion (12) is formed on the inner side of the first rod body (1); the side wall of the second rod body (2) is extruded inwardly to form the second guide groove (21), and the second positioning portion (22) is formed on the inner side of the second rod body (2).

5. A joint structure for an extension rod according to claim 3 or 4, characterized in that: The first rod body (1) and the second rod body (2) have the same cross section, the second guide portion (46) can cooperate with the first guide groove (11), and the first guide portion (42) can cooperate with the second guide groove (21).

6. A joint structure for an extension rod according to claim 5, wherein: The first guide portion (42) and the second guide portion (46) have the same cross section, the first guide portion (42) is arranged in the extension direction of the second guide portion (46), and the first guide portion (42) is symmetrically arranged on both sides.

7. A joint structure for an extension rod according to claim 1, wherein: The connecting sleeve (4) is relatively fixed with the first rod body (1) through a fastener, the plug-in hole (41) is provided with a positioning convex edge (43), the outer periphery of the plug (6) is provided with a first convex edge (62), the first rod body (1) abuts the first convex edge (62) against the positioning convex edge (43), and the plug (6) and the first rod body (1) are prevented from being accidentally separated.

8. A joint structure for an extension rod according to claim 7, characterized in that: The first convex edge (62) and the socket (7) abut on both sides of the positioning convex edge (43) respectively to make the plug (6) and the socket (7) positioning cooperation, and the plug (6) or the socket (7) crosses the positioning convex edge (43) and makes the plug (6) and the socket (7) connected.

9. A joint structure for an extension rod according to claim 1, wherein: The socket (7) is provided with a plug part (75) which is inserted in the second rod body (2), and the plug part (75) is provided with an elastic hook (74), and the sidewall of the second rod body (2) is provided with a hook groove (23) matched with the elastic hook (74).

10. A joint structure for an extension rod according to claim 1, characterized by: The second rod body (2) is detachably provided with a limiting sleeve (24) through a fastener, the locking sleeve (5) is provided with a necking (51), the limiting sleeve (24) is inserted in the locking sleeve (5), and one side of the necking (51) abuts on the limiting sleeve (24) to make the first rod body (1) and the second rod body (2) relatively fixed, and make the plug (6) and the socket (7) closely cooperate.

Images