Ground wire connecting structure for winding roll and winding roll

Abstract

The utility model relates to a ground wire connecting structure for a winding roll and the winding roll. The ground wire connecting structure comprises a fixing frame; the wire coil is rotationally arranged on the fixing frame, and a power line is wound on the wire coil; the ground wire conductive column is arranged on the wire coil in a manner of moving along the axial direction of the ground wire conductive column and can rotate along with the wire coil, and the ground wire conductive column is connected with a ground wire of a power line sleeved on the wire coil; the ground wire conducting strip is arranged on the fixing frame, the whole ground wire conducting strip is in a circular ring shape, a main body of the ground wire conducting strip is opposite to the end part of the ground wire conducting column, and the ground wire conducting column is always in contact with the ground wire conducting strip in the process of rotating along with the wire coil; and the first elastic piece acts on the ground wire conductive column and enables the ground wire conductive column to always have a trend of moving towards one side where the ground wire conductive sheet is located. The utility model has the advantages of simple structure and capability of effectively simplifying the assembly process so as to improve the production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of cable reels, in particular to a ground wire connection structure for cable reels and a cable reel. Background Art

[0002] In order to avoid the power cord being placed outside the electric iron and looking messy, existing ironing equipment, such as electric irons, is provided with a cord reel, which winds up the power cord and stores it inside the electric iron, thereby effectively organizing the power cord and helping to save space. The cord reel winds up the power cord through a winding spring. One end of the power cord needs to be exposed outside the main body of the ironing device, and the other end of the power cord needs to maintain electrical contact with the electrode assembly on the main body to ensure stable power supply. For example, the Chinese utility model patent application with application number CN202122359683.8 (authorization announcement number: CN216474123U) discloses a new cord reel structure for an ironing device, wherein a power cord is wound inside the cord reel, and the power cord is electrically connected to the device main body through the electrode assembly. The electrode assembly includes a conductive column, an electric contact ring provided on the cord reel, and an end cover fixed on the cord reel. The first section of the conductive column is passed through the end cover and is electrically connected to the main body. An elastic member is provided between the second section of the conductive column and the end cover. The elastic member drives the conductive column to abut against the electric contact ring to connect the power cord to the main body.

[0003] However, the existing ground wire connection structure of the cable reel still has certain shortcomings. The ground wire of the power cord is generally connected to a conventional wiring lug, and then connected to a rotatable miniature bearing through the wiring lug. Specifically, the ground wire is locked to the miniature bearing to form a ground wire conduction path for the cable reel. However, the cost of this cable reel ground wire connection structure is relatively high, the assembly process is cumbersome, and the production efficiency is low.

[0004] Therefore, the ground wire connection structure of the existing cable reel needs to be further improved. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide a ground wire connection structure of a cable reel which has a simple structure and can effectively simplify its assembly process and thus improve production efficiency in view of the current status of the prior art.

[0006] The second technical problem to be solved by the utility model is to provide a wire reel with a ground wire connection structure using the wire reel according to the current status of the prior art.

[0007] The utility model solves the above-mentioned first technical problem by adopting a technical solution: a ground wire connection structure of a cable reel, comprising:

[0008] Fixed frame;

[0009] A wire reel, rotatably mounted on the fixing frame, and for the power wire to be wound thereon;

[0010] Also includes:

[0011] A ground wire conductive column is arranged on the wire drum in a manner that it can move along its own axial direction and can rotate with the wire drum, and the ground wire conductive column is connected to the ground wire of the power line sleeved on the wire drum;

[0012] A ground wire conductive sheet is arranged on the fixing frame and is in a circular ring shape as a whole. The main body of the ground wire conductive sheet is opposite to the end of the ground wire conductive column. When the ground wire conductive column rotates with the wire drum, the ground wire conductive sheet is always in contact with the ground wire conductive column.

[0013] The first elastic member acts on the ground conductive column and makes the ground conductive column always have a tendency to move toward the side where the ground conductive sheet is located.

[0014] The above-mentioned first elastic member can adopt various existing technologies and may include various elastic elements such as compression springs, torsion springs, and spring leaves. However, in order to better cooperate with the above-mentioned ground wire conductive column, the wire reel defines an installation channel for installing the ground wire conductive column, and the outer peripheral wall of the ground wire conductive column has a radially outwardly protruding limit stop portion. The first elastic member is a first spring, which is arranged in the installation channel and is sleeved outside the ground wire conductive column, and one end of the first spring is against the limit stop portion, and the other end is against the inner wall of the installation channel.

[0015] In order to make the ground conductive column and the ground conductive sheet abut against each other, the wire drum is also provided with an opening which is connected with the installation channel and opposite to the ground conductive sheet. One end of the ground conductive column is exposed through the opening and abuts against the ground conductive sheet.

[0016] In order to ensure the smooth axial movement of the ground wire conductive column, the wire reel is also provided with an opening that is connected to the installation channel. The opening and the above-mentioned opening are respectively located at the two opposite ends of the installation channel. A cover plate is also provided at the opening. The cover plate is provided with a guide hole for the ground wire conductive column to be movably limited in the axial direction. One end of the ground wire conductive column passes through the guide hole of the cover plate and serves as a connection end connected to the ground wire of the power line.

[0017] As an improvement, the ground wire of the power line is connected to the connection end of the ground wire conductive column by welding.

[0018] In order to facilitate the connection between the ground wire wound on the wire drum and the ground wire conductive column, the wire drum includes a barrel portion for the power wire to be wound thereon, and a first flange portion and a second flange portion respectively located at both ends of the length direction of the barrel portion and extending radially outward. The barrel portion also has an end wall and a support column connected to the end wall and extending axially. The interior of the support column is hollow to form the installation channel. The peripheral wall of the barrel portion is also provided with a clearance gap for the ground wire connector at the end of the power wire to extend into the barrel portion.

[0019] As an improvement, the ground wire conductive column comprises a conductive column body and a contact point arranged at the end of the conductive column body and used for contacting the ground wire conductive sheet.

[0020] As a further improvement, the conductive column body is a copper rod, and the contact is a silver contact.

[0021] In order to facilitate processing and ensure the reliability of the connection of the ground wire conductive sheet, the ground wire conductive sheet is a copper ring connected to the fixing frame by ultrasonic welding.

[0022] The technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a winding reel, including a shell, a wire reel rotatably arranged in the shell, and a power cord wound on the wire reel, the ground wire of the power cord is connected to the wire reel through the ground wire connection structure of the above-mentioned winding reel, and the shell is the above-mentioned fixing frame.

[0023] Compared with the prior art, the advantages of the utility model are as follows: the ground wire connection structure in the utility model is achieved by the ground wire conductive sheet arranged on the fixed frame contacting and cooperating with the ground wire conductive column arranged on the wire reel, which simplifies the connection structure and assembly process of the ground wire, improves the assembly efficiency, and reduces the production and use costs. Among them, the conductive column is also pre-stressed by an elastic part, avoiding the problem of poor contact of the conductive column and the conductive sheet when the reel rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of a cable reel according to an embodiment of the utility model;

[0025] Figure 2 It is a three-dimensional structural schematic diagram of the cable reel of the embodiment of the utility model from another angle;

[0026] Figure 3 A sectional perspective view of a cable reel according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the cable reel of the utility model embodiment without the outer shell;

[0028] Figure 5 A cross-sectional perspective view of the cable reel without the outer shell of the embodiment of the utility model;

[0029] Figure 6 The figure is a schematic diagram of the internal structure of the cable reel according to an embodiment of the utility model. DETAILED DESCRIPTION

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0032] Figure 1-Figure 6 The utility model shows a preferred embodiment of a ground wire connection structure for a cable reel and a cable reel. The cable reel includes a housing (i.e., a fixed frame 10), a cable reel 20 rotatably arranged in the housing, and a power cord 3 wound on the cable reel 20. The housing is a disk structure having a movable thickness in the upper line direction, and its interior is hollow for placing the cable reel 20. A threading opening 11 for the power cord 3 to pass through is provided on the outer peripheral side wall of the housing. The bottom wall of the housing has an axis extending from bottom to top toward the inside of the housing, and the middle part of the above-mentioned cable reel 20 is hollow for the axis of the housing to pass through, thereby realizing the rotation of the cable reel 20 around the axis.

[0033] See also Figure 3 , a ground wire conductive sheet 5 is also provided on the inner side of the bottom wall of the shell. The ground wire conductive sheet 5 is in an annular shape as a whole, specifically a copper ring, and is connected to the bottom wall of the shell by ultrasonic welding. The center line of the ground wire conductive sheet 5 is substantially coaxial with the shaft of the shell. Specifically, the ground wire conductive sheet 5 includes a conductive sheet body 50 and at least two connecting extensions 52 arranged in sequence along the circumference of the conductive sheet body 50 and extending outward from the conductive sheet body 50. Each connecting extension 52 is provided with a connecting hole, and at least two welding protrusions 121 arranged in sequence along the circumference and extending upward are provided on the inner side of the bottom wall of the shell. Each welding protrusion 121 passes through the corresponding connecting hole, and its top is exposed relative to the connecting hole so that the two are suitable for being connected by ultrasonic welding.

[0034] like Figure 2As shown, a through-opening 13 is provided on the bottom wall of the housing, and the ground conductive sheet 5 has a bent connecting portion 51 bent toward the side. The bent connecting portion 51 passes outward through the upper opening 13 and is exposed, so as to be conveniently connected to a corresponding connecting line of a product such as an ironing device.

[0035] See also Figure 5 The cable drum 20 includes a barrel 23 on which the power cord 3 is wound, and a first flange 21 and a second flange 22 located at both ends of the barrel 23 in the length direction and extending radially outward. The first flange 21 and the second flange 22 can prevent the power cord 3 from falling out of the end of the barrel. The barrel 23 also has an end wall 231 and a support column 232 connected to the end wall 231 and extending in the axial direction. The support column 232 is hollow inside to form a mounting channel 2320 extending up and down, and the extending direction of the mounting channel 2320 is consistent with the axial direction of the barrel 23.

[0036] The ground wire conductive column 4 is movably arranged in the above-mentioned installation channel 2320 along the axial direction. Among them, the upper end of the support column 232 has an upper port (i.e., an open port) that penetrates the installation channel 2320, and a cover plate 233 is provided at the upper port. The cover plate 233 can be connected to the support column 232 by fasteners such as screws. A guide hole 2330 is opened on the cover plate 233 for the ground wire conductive column 4 to be movably limited in the axial direction. One end of the ground wire conductive column 4 passes through the guide hole 2330 of the cover plate 233. The part of the ground wire conductive column 4 exposed from the guide hole 2330 is connected to the ground wire 33 of the power line 3 by electric welding. The part of the ground wire conductive column 4 exposed from the guide hole 2330 is the connection end 412.

[0037] The lower end of the support column 232 is provided with a lower port (i.e., an opening) that is intersecting with the installation channel 2320, and the lower port is opposite to the ground conductive sheet 5 disposed on the inner side of the bottom wall of the housing. The lower end of the ground conductive column 4 is exposed to the outside through the lower port of the installation channel 2320, and abuts against the ground conductive sheet 5 disposed on the inner side of the bottom wall of the housing. The ground conductive column 4 includes a conductive column body 41 and a contact 42 disposed at the end of the conductive column body 41 and used to contact the ground conductive sheet 5. The conductive column body 41 is a copper rod, and the contact 42 is a silver contact.

[0038] The outer peripheral wall of the ground conductive column 4 is provided with a limit stopper 411 protruding radially outward. A first spring (i.e., the first elastic member 6) is also provided in the installation channel 2320. The first spring is sleeved outside the ground conductive column 4, and the lower end of the first spring abuts against the limit stopper 411 of the ground conductive column 4, and the other end abuts against the bottom wall of the cover plate 233. Under the elastic force of the first spring, the ground conductive column 4 always has a tendency to move downward (also move toward the side where the ground conductive sheet 5 is located) to ensure that the ground conductive column 4 and the ground conductive sheet 5 are in good contact.

[0039] The peripheral wall of the barrel 23 is also provided with a clearance gap 230 for the ground wire connector at the end of the power cord 3 wound thereon to extend into the barrel 23. The above-mentioned housing, the cable drum 20, the ground wire conductive column 4, the ground wire conductive sheet 5, the first spring and other components also constitute the ground wire connection structure of the cable drum of this embodiment.

[0040] As for the positive and negative poles of the power cord 3, the conventional wiring method in the prior art can be adopted, such as the wiring method of "A new winding reel structure for an ironing device" disclosed in the Chinese utility model patent application CN202122359683.8 (authorization announcement number: CN216474123U), which will not be repeated here.

[0041] The ground wire connection structure of the present embodiment is achieved by the ground wire conductive sheet 5 provided on the fixed frame 10 contacting and cooperating with the ground wire conductive column 4 provided on the wire reel 20. This simplifies the connection structure and assembly process of the ground wire, improves the assembly efficiency, and reduces the production and use costs. The conductive column is also pre-stressed by an elastic member to avoid the problem of poor contact between the conductive column and the conductive sheet when the reel is rotating.

Claims

1. A ground wire connection structure for a cable reel, comprising: Fixed frame (10); A wire drum (20) is rotatably mounted on the fixing frame (10) and is used for the power cord (3) to be wound around it; The invention is characterized in that it also includes: A ground wire conductive column (4) is arranged on the wire drum (20) in a manner that it can move along its own axial direction and can rotate with the wire drum (20), and the ground wire conductive column (4) is connected to a ground wire (33) of a power line (3) sleeved on the wire drum (20); A ground wire conductive sheet (5) is arranged on the fixing frame (10) and is in the shape of a circular ring as a whole. The main body of the ground wire conductive sheet (5) is opposite to the end of the ground wire conductive column (4). When the ground wire conductive column (4) rotates with the wire drum (20), the ground wire conductive sheet (5) is always in contact with the ground wire conductive column (4); The first elastic member (6) acts on the ground conductive column (4) and causes the ground conductive column (4) to always have a tendency to move toward the side where the ground conductive sheet (5) is located.

2. The ground wire connection structure for a cable reel according to claim 1, characterized in that: The wire drum (20) defines an installation channel (2320) for installing the ground wire conductive column (4); the outer peripheral wall of the ground wire conductive column (4) has a limit stop portion (411) protruding radially outward; the first elastic member (6) is a first spring, which is arranged in the installation channel (2320) and sleeved outside the ground wire conductive column (4), with one end of the first spring abutting against the limit stop portion (411) and the other end abutting against the inner wall of the installation channel (2320).

3. The ground wire connection structure for a cable reel according to claim 2, characterized in that: The wire drum (20) is also provided with an opening which is in communication with the installation channel (2320) and is opposite to the ground conductive sheet (5); one end of the ground conductive column (4) is exposed through the opening and abuts against the ground conductive sheet (5).

4. The ground wire connection structure for a cable reel according to claim 3, characterized in that: The cable drum (20) is also provided with an opening which is in communication with the installation channel (2320), and the opening and the opening are respectively located at two ends opposite to the installation channel (2320). A cover plate (233) is also provided at the opening, and a guide hole (2330) is provided on the cover plate (233) for the ground wire conductive column (4) to be movably limited in the axial direction. One end of the ground wire conductive column (4) passes through the guide hole (2330) of the cover plate (233) and serves as a connection end (412) connected to the ground wire of the power line (3).

5. The ground wire connection structure for a cable reel according to claim 4, characterized in that: The ground wire of the power line (3) is connected to the connection end (412) of the ground wire conductive column (4) by welding.

6. The ground wire connection structure for a cable reel according to claim 2, characterized in that: The cable drum (20) comprises a barrel (23) on which a power line (3) is wound, and a first flange (21) and a second flange (22) respectively located at two ends of the barrel (23) in the length direction and extending radially outward. The barrel (23) also has an end wall (231) and a support column (232) connected to the end wall (231) and extending in the axial direction. The support column (232) is hollow inside to form the installation channel (2320). The circumferential wall of the barrel (23) is also provided with a clearance gap (230) for a grounding connector at the end of the power line (3) to extend into the barrel (23).

7. The ground wire connection structure for a cable reel according to any one of claims 1 to 6, characterized in that: The ground wire conductive column (4) comprises a conductive column body (41) and a contact point (42) arranged at the end of the conductive column body (41) and used to contact the ground wire conductive sheet (5).

8. The ground wire connection structure for a cable reel according to claim 7, characterized in that: The conductive column body (41) is a copper rod, and the contact point (42) is a silver contact point.

9. The ground wire connection structure for a cable reel according to any one of claims 1 to 6, characterized in that: The ground wire conductive sheet (5) is a copper ring connected to the fixing frame (10) by ultrasonic welding.

10. A cable reel, comprising a housing, a cable reel (20) rotatably disposed in the housing, and a power cord (3) wound around the cable reel (20), characterized in that: The ground wire of the power cord (3) is connected to the cable reel (20) via a ground wire connection structure for a cable reel according to any one of claims 1 to 9, and the housing is the fixing frame (10).

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