Trimmer device with interchangeable working heads

Abstract

The utility model discloses a trimmer device with interchangeable working heads, which comprises a trimmer body and a tool bit assembly arranged on the trimmer body, a positioning piece is arranged in the trimmer body, and the trimmer body and the tool bit assembly are fixed on the positioning piece through a key device. According to the utility model, the design is more reasonable, the structure is simpler, not only is the disassembly and the assembly convenient, but also the connection is firmer, the loosening phenomenon and the falling-off problem between the two are greatly reduced, and the use requirements can be better met.

Description

Technical Field

[0001] This utility model relates to the field of electric hair trimmer technology, and in particular to a trimmer device with interchangeable working heads. Background Technology

[0002] Existing hair trimmers tend to be compact and stylish in design, with a wide variety of products but limited functionality. Their advantages include aesthetic appeal and stable performance. For example, the contour hair trimmer with interchangeable working heads described in Chinese invention patent application CN117279754A features a second support bracket with a U-shaped end defining a slot. This slot slidably engages a threaded nut insert and a thumb screw. The thumb screw has a knob with knurled or otherwise enhanced grip. When the user wishes to change the working head, unscrewing the threaded thumb screw allows easy release of the support bracket from the trimmer housing and removal of the installed working head, as well as replacement with another working head. This other working head engages with the drive shaft and is releasably secured to the trimmer housing using the thumb screw. However, this knob is merely tightened onto the trimmer housing, which can easily lead to loosening and detachment during long-term use. Therefore, improvements are necessary. Utility Model Content

[0003] (a) Technical problems that need to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a trimmer device with interchangeable working heads. Its design is more reasonable and its structure is simpler. It is not only easier to disassemble and install, but also more secure when connected, greatly reducing the occurrence of loosening and the problem of the two parts falling off, thus better meeting the needs of use.

[0005] (ii) Technical solutions to be adopted

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A trimmer device with interchangeable working heads includes a body and a blade assembly disposed on the body. A positioning element is disposed inside the body, and the body and the blade assembly are fixed to the positioning element by a button device.

[0008] Preferably, a drive source is provided inside the machine body, and the drive shaft of the drive source passes through the positioning member and is connected to the cutter head assembly. A fixing frame is provided on the drive source, and the fixing frame is fastened to the machine body by a number of locking members.

[0009] Preferably, the button device includes a tool holder disposed on the cutter head assembly, the tool holder having a through hole, a button screw disposed in the through hole, the button screw moving back and forth in the through hole, and a limiting groove being provided on the side of the tool holder corresponding to one side of the machine body, the limiting groove having a nut moving back and forth, the tool holder having a strip hole communicating with the through hole, the nut having a reset member, and the button screw passing through the through hole and the nut sequentially to the positioning member.

[0010] Preferably, the button screw includes a screw rod and a screw shank disposed on the end face of the screw rod. The screw rod is provided with a fixing body for fixing in the through hole. The outer diameter of the fixing body is slightly smaller than the inner diameter of the through hole. One end of the screw rod extends into the positioning member, and the screw rod between the fixing body and the screw shank can slide back and forth in the strip hole.

[0011] Preferably, the limiting groove is a track groove, which is arranged along the length of the machine body, and the nut slides back and forth along the limiting groove.

[0012] Preferably, the reset element is a spring.

[0013] Preferably, the positioning component includes a positioning sleeve disposed inside the machine body, the drive shaft of the drive source passes through the positioning sleeve and is connected to the cutter head assembly, and the positioning sleeve has a socket for the key screw to be inserted and locked.

[0014] Preferably, the positioning sleeve is engaged with the fixing frame.

[0015] (III) The technical effects to be achieved

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] Firstly, the machine body of this utility model is equipped with a positioning component. The machine body and the cutter head assembly are fixed to the positioning component by a button device. Its design is more reasonable and the structure is simpler. It is not only easy to disassemble and install, but also more secure when connected, which greatly reduces the occurrence of loosening and the problem of the two falling off, and can better meet the needs of use.

[0018] Secondly, the machine body of this utility model is equipped with a positioning component. The machine body and the cutter head assembly are fixed to the positioning component by a button device. In use, simply press the button device to release the restriction that the cutter head assembly is fixed to the machine body. This allows the cutter head assembly to be removed from the machine body for replacement or cleaning. When the button device of the cutter head assembly is locked to the machine body by the button device, the cutter head assembly is fixed and locked to the machine body. This operation is extremely simple and convenient, making it easy for users to use and more conducive to its widespread promotion and application. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0020] Figure 2 This is a top view of the present invention.

[0021] Figure 3 for Figure 2 Sectional view along the AA direction.

[0022] Figure 4 This is a schematic diagram of the assembly of the drive source, fixing frame and locking components in the body of this utility model.

[0023] Figure 5 This is an exploded view of the machine body, cutter head assembly, positioning component, button device, drive source, fixing frame, and locking component of this utility model.

[0024] Figure 6 This is a schematic diagram of the assembly of the cutter head assembly and the cutter holder of this utility model.

[0025] Figure 7 This is an assembly diagram of the cutter head assembly, positioning component, button device, fixing bracket, and locking component of this utility model.

[0026] Figure 8 This is an assembly diagram of the cutter head assembly, button device, drive source, fixing frame and locking component of this utility model.

[0027] In the diagram: 1, machine body; 2, cutter head assembly; 3, positioning component; 4, button device; 5, drive source; 6, fixing bracket; 7, locking component; 31, positioning sleeve; 41, cutter holder; 42, button screw; 43, nut; 44, reset component; 311, insertion hole; 411, through hole; 412, limit groove; 413, strip hole; 421, screw rod; 422, screw shank; 423, fixing body. Detailed Implementation

[0028] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0029] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0032] Example 1: See Figure 1 , Figure 2 , Figure 3 and Figure 5A trimmer device with interchangeable working heads includes a body 1 and a cutter head assembly 2 mounted on the body 1. A positioning element 3 is provided inside the body 1. The body 1 and the cutter head assembly 2 are fixed to the positioning element 3 via a button device 4. In use, simply pressing the button device 4 releases the cutter head assembly 2 from the body 1, allowing it to be removed for replacement or cleaning. Conversely, when the cutter head assembly 2 is locked to the body 1 via the button device 4, it is securely fixed to the body 1, facilitating user operation. This design is more rational and simpler, not only facilitating disassembly and installation but also ensuring a tighter connection, significantly reducing the risk of loosening or detachment, and better meeting user needs. This invention enables one-button operation of the button device 4 to detach the cutter head assembly 2 from the body 1 and to lock it securely in place, providing convenient operation and user-friendliness.

[0033] Example 2: This can be explained based on Example 1, such as... Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, a drive source 5 is installed inside the machine body 1. The drive shaft of the drive source 5 passes through the positioning member 3 and connects to the cutter head assembly 2. The drive shaft of the drive source 5 can be detached from the cutter head assembly 2. This facilitates the normal operation of the cutter head assembly 2 and also makes disassembly and installation easier. The drive source 5 has a fixing bracket 6 on its upper cover. The fixing bracket 6 and the machine body 1 are fastened together by several locking members 7. In this embodiment, the locking members 7 are screws, and four locking members 7 are used. This arrangement facilitates disassembly and installation. In this embodiment, the drive source 5 is a motor assembly. Since the motor assembly is existing technology, it will not be described in detail.

[0034] Example 3: This can be explained based on Example 2, such as... Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the button device 4 includes a tool holder 41 mounted on the tool head assembly 2. The tool holder 41 has a through hole 411, in which a button screw 42 is installed. The button screw 42 moves back and forth within the through hole 411. A limiting groove 412 is provided on the side of the tool holder 41 corresponding to one side of the machine body 1. A nut 43 moves back and forth within the limiting groove 412. The tool holder 41 has a strip-shaped hole 413 communicating with the through hole 411. A reset member 44 is provided on the nut 43. The button screw 42 passes through the through hole 411 and the nut 43 sequentially to the positioning member 3. In its original state, the button screw 42 is fixed to the through hole 411. When the button screw 42 is pressed, it moves towards the positioning member 3, compressing the reset member 44. Thus, the button screw 42... The downward movement allows the button screw 42 to exit through the strip hole 413, which facilitates the removal of the cutter head assembly 2 from the machine body 1. When the external force pressing the button screw 42 is removed, the button screw 42 returns to its original position under the restoring force of the reset member 44. Conversely, when the cutter head assembly 2 is installed on the machine body 1, pressing the button screw 42 causes it to enter the through hole 411 through the strip hole 413. Releasing the button screw 42 will fix the cutter head assembly 2 onto the machine body 1. This operation is extremely simple and convenient. To further explain, the button screw 42 includes a screw rod 421 and a screw shank 422 disposed on the end face of the screw rod 421. The screw rod 421 is provided with a fixing body 423 for fixing in the through hole 411. The outer diameter of the fixing body 423 is slightly smaller than the inner diameter of the through hole 411, which is conducive to the up and down movement of the screw rod 421. The fixing body 423 in the through hole 411 helps to avoid entering the strip hole 413. One end of the screw rod 421 extends into the positioning member 3, and the screw rod 421 between the fixing body 423 and the screw shank 422 can slide back and forth in the strip hole 413. This is conducive to the button screw 42 fixing and locking the cutter head assembly 2 to the machine body 1.

[0035] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in this embodiment, the limiting groove 412 is a track groove, which is arranged along the length of the body 1, and the nut 43 slides back and forth along the limiting groove 412.

[0036] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in this embodiment, the reset component 44 is a spring, which is widely available and easy to implement.

[0037] Example 4: This can be explained based on Example 3, such as... Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, the positioning component 3 includes a positioning sleeve 31 disposed inside the machine body 1. The drive shaft of the drive source 5 passes through the positioning sleeve 31 and connects to the cutter head assembly 2. The positioning sleeve 31 has a socket 311 for the insertion and locking of the key screw 42. Since the positioning component 3 is located inside the machine body 1, the insertion and locking of the key screw 42 into the socket 311 of the positioning sleeve 31 inside the machine body 1 makes the cutter head assembly 2 more securely locked to the machine body 1, preventing loosening or falling off, and better meeting usage requirements. Furthermore, the positioning sleeve 31 is engaged with the fixing bracket 6, which facilitates the installation of the positioning sleeve 31 and further facilitates the subsequent locking and securing of the cutter head assembly 2 to the machine body 1.

[0038] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets and screws that are mature in the existing technology. The motor assembly and internal computer components adopt conventional models in the existing technology, and their internal structure belongs to the existing technology structure. Workers can complete normal operation by referring to the existing technical manual. In addition, the circuit connection adopts conventional connection methods in the existing technology, and will not be described in detail here.

[0039] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A trimmer device with interchangeable working heads, comprising a body (1) and a cutter head assembly (2) disposed on the body (1), characterized in that: The machine body (1) is provided with a positioning component (3). The machine body (1) and the cutter head assembly (2) are fixed to the positioning component (3) by a button device (4). The button device (4) includes a cutter holder (41) provided on the cutter head assembly (2). The cutter holder (41) is provided with a through hole (411). A button screw (42) is provided in the through hole (411). The button screw (42) moves back and forth in the through hole (411). A limiting groove (412) is provided on the side corresponding to the tool holder (41) on one side of the machine body (1). A nut (43) that moves back and forth is provided in the limiting groove (412). A strip hole (413) connected to the through hole (411) is provided on the tool holder (41). A reset member (44) is provided on the nut (43). The button screw (42) passes through the through hole (411) and the nut (43) in sequence and goes through to the positioning member (3).

2. The trimmer device with interchangeable working heads as described in claim 1, characterized in that: The machine body (1) is provided with a drive source (5). The drive shaft of the drive source (5) passes through the positioning member (3) and is connected to the cutter head assembly (2). The drive source (5) is covered with a fixing frame (6). The fixing frame (6) and the machine body (1) are fastened together by a number of locking members (7).

3. The trimmer device with interchangeable working heads as described in claim 1, characterized in that: The button screw (42) includes a screw rod (421) and a screw shank (422) disposed on the end face of the screw rod (421). A fixing body (423) for fixing in the through hole (411) is provided on the screw rod (421). The outer diameter of the fixing body (423) is slightly smaller than the inner diameter of the through hole (411). One end of the screw rod (421) extends into the positioning member (3), and the screw rod (421) between the fixing body (423) and the screw shank (422) can slide back and forth in the strip hole (413).

4. The trimmer device with interchangeable working heads as described in claim 1, 2, or 3, characterized in that: The limiting groove (412) is a track groove, which is arranged along the length of the body (1), and the nut (43) slides back and forth along the limiting groove (412).

5. The trimmer device with interchangeable working heads as described in claim 1, 2, or 3, characterized in that: The reset component (44) is a spring.

6. The trimmer device with interchangeable working heads as described in claim 2, characterized in that: The positioning component (3) includes a positioning sleeve (31) disposed inside the body (1). The drive shaft of the drive source (5) passes through the positioning sleeve (31) and is connected to the cutter head assembly (2). The positioning sleeve (31) has a socket (311) for the key screw (42) to be inserted and locked.

7. The trimmer device with interchangeable working heads as described in claim 6, characterized in that: The positioning sleeve (31) engages with the fixing frame (6).

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