Hair dryer power cord plug structure, connecting structure and hair dryer

Abstract

The utility model discloses a kind of electric hair dryer power cord plug structure, connecting structure and electric hair dryer, plug structure is cooperated by being set on power plug with the fixing ring of protective sleeve to realize the fixation of protective sleeve, so that protective sleeve can be used for a long time without falling under the condition of reaching effective anti-electric shock effect. Connecting structure is set on rotatable locking sleeve by being connected with the plug, after the mutual insertion of the body joint of connecting plug and electric hair dryer, by rotating locking sleeve, locking sleeve and the body joint are mutually locked by buckle structure. When power cord needs to be pulled out, locking can be released by reversing rotating locking sleeve, so that the balance between locking effect and plug convenience can be realized between power cord and electric hair dryer, which is easy to plug and pull out, and also stable connection.

Description

Technical Field

[0001] This utility model relates to the technical field of hair dryer products, and in particular to the structure of a hair dryer and its power cord. Background Technology

[0002] Hair dryers generally consist of the main body and a power cord. Traditionally, the power cord is directly fixed to the main body, which can sometimes cause inconvenience. To address this, some hair dryers are designed with a detachable power cord, but this type of cord is prone to coming loose during use. To further address this, some designers have created locking structures for the connection between the power cord and the hair dryer body. For example, Chinese utility model patent CN205197321U discloses a connection structure for an external power cord in a hair dryer. This structure uses a hook-and-loop fastener at the front of a hook plate to engage with a slot on the surface of the plug head, preventing the power cord from coming loose during use. However, this structure has the following problems: for a good anti-loosening effect, the hook-and-loop fastener needs to be tightly engaged with the slot, but if it's too tight, the power cord becomes difficult to remove. Conversely, if the power cord isn't difficult to remove, the hook-and-loop fastener cannot be too tight, but this still allows the power cord to come loose, creating a dilemma between tightness and looseness.

[0003] In addition, to address the potential for electric shock when plugging in a power plug, various protective structures have been designed. For example, Chinese utility model patent CN102354840A discloses a retractable plug protective sleeve. This sleeve, designed to fit over the plug's prongs, provides protection when not in use. When the plug is needed, the elastic sleeve automatically extends during insertion, retracting to expose the prongs. This prevents the hand from easily touching the prongs, thus preventing electric shock. However, its reliance on adhesive components to fix the sleeve to the plug results in poor durability, making it prone to falling off over time. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a simpler, more rationally designed power cord plug structure, connection structure, and power hair dryer that features a secure connection between the power cord and the hair dryer body, and a protective cover on the power plug that is less likely to detach.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a hair dryer power cord plug structure, including a power plug, a wire connected to the power plug, prongs and an elastic protective sleeve on the power plug, the protective sleeve covering the prongs when extended; a fixing groove is provided on the surface of the power plug, and a protruding fixing part is provided on the inner wall of the protective sleeve, the protective sleeve and the power plug are fixed by the fixing part being embedded in the fixing groove.

[0006] Furthermore, the fixing groove is a groove that is set around the outer wall of the power plug, and the fixing part is a fixing ring that is set around the inner wall of the protective sleeve, with the entire fixing ring being embedded in the fixing groove.

[0007] Furthermore, the fixing ring is located at the tail of the protective sleeve, and it is an integral structure with the protective sleeve, and is made by integral molding.

[0008] Preferably, the protective case is made of a flexible soft rubber, such as silicone.

[0009] A power cord connection structure for a hair dryer includes a connector plug to which a cord is connected. The connector plug has a protruding plug, and the power cord is inserted into the plug hole of the hair dryer's main body connector through the plug to connect to the hair dryer. It also includes a locking sleeve, which is fitted and fixed to the connector plug or the main body connector to form a rotatable structure. A rotating locking structure is provided between the locking sleeve and the main body connector or the connector plug. After the connector plug and the main body connector are inserted, rotating the locking sleeve causes the rotating locking structure to lock and fix the connector plug and the main body connector.

[0010] Furthermore, an annular groove is provided on the outer wall of the connector, and a limiting ring is provided on the inner wall of the locking sleeve. The connector is embedded in the limiting ring, and the locking sleeve and the connector are assembled into a rotatable structure by the limiting ring being movably embedded in the annular groove; the rotatable engagement structure is provided between the locking sleeve and the main connector.

[0011] Furthermore, the rotating locking structure includes a slot on the main body connector and a buckle on the locking sleeve. The slot is L-shaped, and after the buckle is inserted into the slot, the locking sleeve is rotated to lock the buckle and the slot together.

[0012] Furthermore, the buckle is located at the front end of the inner wall of the locking sleeve, the limiting ring is located at the rear end of the inner wall of the locking sleeve, and the slot is located at the end of the outer wall of the main body connector.

[0013] Preferably, the buckle and limiting ring are integrally formed with the main body of the locking sleeve, and are injection molded from plastic material.

[0014] A hair dryer, the power cord of which includes the aforementioned plug structure and the aforementioned connection structure.

[0015] This invention has two main advantages. First, it incorporates a rotatable locking sleeve on the connector plug. After the connector plug and the hair dryer's main body connector are inserted, rotating the locking sleeve locks them together via a snap-fit ​​mechanism. To unplug the power cord, simply rotate the locking sleeve in the opposite direction to release the lock. This achieves a perfect balance between effective locking and ease of connection and disconnection, ensuring both easy insertion and removal and a secure connection. Second, it uses a fixing groove on the power plug that works in conjunction with the fixing ring of the protective sleeve to secure the sleeve. This ensures that the protective sleeve effectively prevents electric shock and remains securely in place even after prolonged use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram showing the power cord and the connector of the main body of this utility model in the plugged-in state.

[0017] Figure 2 for Figure 1 The exploded state diagram of the structure shown;

[0018] Figure 3 for Figure 1 The diagram shown is a schematic of the structure after the locking sleeve has been removed.

[0019] Figure 4 This is a schematic diagram of the power cord of this utility model;

[0020] Figure 5 This is a schematic diagram of the power cord of this utility model from another angle;

[0021] Figure 6 A schematic diagram of the plug portion with the protective cover extended;

[0022] Figure 7 This is a diagram showing the protective cover in its extended position.

[0023] In the diagram, 1 is the cable, 2 is the power plug, 21 is the pin, 22 is the fixing groove, 3 is the connector, 31 is the plug connector, 32 is the annular groove, 4 is the protective sleeve, 41 is the fixing ring, 5 is the locking sleeve, 51 is the limiting ring, 52 is the buckle, 6 is the main body connector, 61 is the plug hole, and 62 is the slot. Detailed Implementation

[0024] In this embodiment, refer to Figures 1-7The power cord plug structure of the described hair dryer includes a power plug 2, a wire 1 connected to the power plug 2, prongs 21 on the power plug 2, and an elastic protective sleeve 4. When not subjected to external force, the protective sleeve 4 extends forward to cover the prongs 21, preventing the hand from touching them. When the power plug 2 is inserted into a socket, the protective sleeve 4 is subjected to pressure and, due to its elasticity, contracts to form a folded state, exposing the prongs 21 to the socket holes. A fixing groove 22 is provided on the surface of the power plug 2, and a protruding fixing part is provided on the inner wall of the protective sleeve 4. The fixing part is embedded in the fixing groove 22 to achieve the connection and fixation between the protective sleeve 4 and the power plug 2.

[0025] The fixing groove 22 is a groove that is set around the outer wall of the power plug 2. The fixing part is a fixing ring 41 that is set around the inner wall of the protective sleeve 4. The entire fixing ring 41 is embedded in the fixing groove 22, so that the protective sleeve 4 can be fixed to the power plug 2 very stably.

[0026] The fixing ring 41 is located at the tail of the protective sleeve 4, and it is an integral structure with the protective sleeve 4, and is made by integral molding.

[0027] The protective cover 4 is made of a flexible soft rubber, such as silicone.

[0028] Reference Figures 1-5 The power cord connection structure of the hair dryer includes a connector 3, a connecting wire 1, and a protruding plug 21 on the connector 2. The power cord is inserted into the plug hole 61 of the hair dryer body connector 6 through the plug 21 to connect with the hair dryer. It also includes a locking sleeve 5, which is sleeved and fixed to the connector 3 to form a rotatable structure. A rotating locking structure is provided between the locking sleeve 5 and the body connector 6. After the connector 3 and the body connector 6 are inserted, the rotating locking sleeve 5 is rotated to lock the connector 3 and the body connector 6 together to achieve locking and fixing of the connector 3 and the body connector 6.

[0029] An annular groove 32 is provided on the outer wall of the connector 3, and a limiting ring 51 is provided on the inner wall of the locking sleeve 5. The connector 31 is embedded in the limiting ring 51, and the locking sleeve 5 and the connector 3 are assembled into a rotatable structure by the limiting ring 51 being movably embedded in the annular groove 32.

[0030] The rotating locking structure includes a slot 62 on the main connector 6 and a buckle 52 on the locking sleeve 5. The slot 62 is L-shaped. First, the buckle 52 is aligned with the slot 62 and then inserted forward. After the buckle 52 is inserted into the slot 62, the locking sleeve 5 is rotated to engage the buckle 52 inside the slot 62, thus securing it tightly and preventing the power cord from coming loose. To remove the power cord, first rotate the locking sleeve 5 in the opposite direction to disengage the buckle 52 from the slot 62, then the connector 2 can be pulled out.

[0031] The buckle 52 is located at the front end of the inner wall of the locking sleeve 5, the limiting ring 51 is located at the rear end of the inner wall of the locking sleeve 5, and the slot 62 is located at the end of the outer wall of the main body connector 6.

[0032] The buckle 52 and the limiting ring 51 are integral with the main body of the locking sleeve 5, and are integrally molded from plastic material.

[0033] The power cord of the hair dryer (main body not shown) includes the aforementioned plug structure and the aforementioned connection structure, which enables the power plug 2 to have an anti-electric shock function and the connection plug 3 to have a locking function, so that it will not come loose after being locked.

[0034] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A power cord plug structure for a hair dryer, comprising a power plug, a cord connected to the power plug, prongs on the power plug, and an elastic protective sleeve that covers the prongs when extended, characterized in that: A fixing groove is provided on the surface of the power plug, and a protruding fixing part is provided on the inner wall of the protective sleeve. The fixing part is embedded in the fixing groove to achieve the connection and fixation between the protective sleeve and the power plug.

2. The hair dryer power cord plug structure according to claim 1, characterized in that: The fixing groove is a groove that is set around the outer wall of the power plug, and the fixing part is a fixing ring that is set around the inner wall of the protective sleeve. The entire fixing ring is embedded in the fixing groove.

3. The hair dryer power cord plug structure according to claim 2, characterized in that: The fixing ring is located at the tail of the protective sleeve, and it is an integral structure with the protective sleeve, and is made by one-piece molding.

4. The hair dryer power cord plug structure according to claim 1, characterized in that: The protective case is made of elastic soft rubber.

5. A power cord connection structure for a hair dryer, comprising a connector plug to which a wire is connected, a protruding plug on the connector plug, and the power cord being connected to the hair dryer by inserting the plug into the plug hole of the hair dryer body connector, characterized in that: It also includes a locking sleeve, which is sleeved and fixed to the connecting plug or the main body connector to form a rotatable structure. A rotating locking structure is provided between the locking sleeve and the main body connector or the connecting plug. After the connecting plug and the main body connector are inserted, the rotating locking sleeve is rotated to make the rotating locking structure lock each other to achieve the locking and fixing of the connecting plug and the main body connector.

6. The hair dryer power cord connection structure according to claim 5, characterized in that: An annular groove is provided on the outer wall of the connector, and a limiting ring is provided on the inner wall of the locking sleeve. The connector is embedded in the limiting ring, and the locking sleeve and the connector are assembled into a rotatable structure by the limiting ring being movably embedded in the annular groove. The rotatable locking structure is provided between the locking sleeve and the main connector.

7. The hair dryer power cord connection structure according to claim 6, characterized in that: The rotating locking structure includes a slot on the main body connector and a buckle on the locking sleeve. The slot is L-shaped. After the buckle is inserted into the slot, the locking sleeve is rotated to lock the buckle and the slot together.

8. The hair dryer power cord connection structure according to claim 7, characterized in that: The buckle is located at the front end of the inner wall of the locking sleeve, the limiting ring is located at the rear end of the inner wall of the locking sleeve, and the slot is located at the end of the outer wall of the main body connector.

9. The hair dryer power cord connection structure according to claim 8, characterized in that: The buckle and limiting ring are integrally formed with the main body of the locking sleeve, and are injection molded from plastic material.

10. A hair dryer, characterized in that: The power cord of the hair dryer includes the plug structure as described in any one of claims 1-4 and the connection structure as described in any one of claims 5-9.

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