Double-end cosmetic brush with combined tenon-and-mortise structure

Abstract

The utility model discloses a mortise and tenon joint structure combined double-head cosmetic brush, which relates to the technical field of cosmetic brushes and is formed by connecting two identical single-head cosmetic brushes through a mortise and tenon joint structure. Each single-head cosmetic brush comprises a brush handle, a brush head and two 90-degree fan-shaped cylinders, the right-angle surfaces of the cylinders are provided with grooves and elastic bulges, and the cylinders are connected through staggered insertion to form a cylindrical structure with the same diameter as the brush handle; male and female structures do not need to be distinguished, only one set of mold is needed, the production cost is remarkably reduced, and the assembly efficiency is improved; the problem that a traditional jack is easy to accumulate dirt is avoided, and cleaning and maintenance are facilitated; a user can independently use a single-head brush or combine the single-head brush into a double-head brush to meet the requirements of different scenes, and a storage box can be arranged to improve the portability; the solar water heater has the advantages of being low in cost, high in efficiency, attractive, practical and easy to clean.

Description

Technical Field

[0001] This utility model belongs to the field of cosmetic tool technology, specifically a double-headed makeup brush with a mortise and tenon structure. Background Technology

[0002] Double-ended makeup brushes are a common makeup tool, achieving multi-functionality through the detachable connection of two single-ended brushes. In existing technology, double-ended makeup brushes typically use a male-female joint structure for connection. One single-ended brush handle has a pin, while the other handle has a hole; the pin is inserted into the hole to connect the two. However, this design has several drawbacks. First, because two different handle structures (one male and one female) need to be manufactured separately, two sets of molds are required, increasing mold costs and production complexity. Furthermore, distinguishing between the different handles during assembly reduces production efficiency. Second, double-ended makeup brushes assembled from convex and concave handles are prone to inconsistencies in length, affecting the product's aesthetics and making storage inconvenient. Additionally, the deep insertion hole structure easily accumulates dirt over long-term use, making cleaning difficult and affecting hygiene and user experience. Therefore, there is an urgent need for a new double-ended makeup brush design that can simplify the production process, reduce costs, and improve the product's aesthetics, practicality, and ease of cleaning to meet consumers' demand for high-quality makeup tools. Utility Model Content

[0003] This utility model addresses the technical problems of existing double-headed makeup brushes, such as high mold costs, low production and assembly efficiency, unattractive appearance, difficulty in cleaning, and limited functionality. Therefore, this utility model adopts the following technical solution:

[0004] This utility model provides a double-headed makeup brush with a mortise and tenon structure, which is composed of two identical single-headed makeup brushes connected by a mortise and tenon structure. The overall design of the double-headed makeup brush is based on the symmetry and interchangeability of the single-headed makeup brushes, and is assembled through a specific mortise and tenon joint method. Each single-headed makeup brush includes a handle, a brush head, and a 90° fan-shaped column for connection.

[0005] Furthermore, the single-headed makeup brush has a brush head at the front end of the handle and two 90° fan-shaped pillars at the rear end, which are evenly distributed circumferentially around the central axis of the handle. For the right-angled face of each 90° fan-shaped pillar, at least one groove and at least one elastic protrusion are arranged along the length of the right-angled face, with the groove positioned behind the elastic protrusion. In a preferred embodiment, each right-angled face has one groove and one elastic protrusion, the geometry of which matches the size of the elastic protrusion to ensure a tight fit during insertion.

[0006] Specifically, the method for connecting the double-headed makeup brush includes the following steps:

[0007] Connect the back ends of two single-headed makeup brushes;

[0008] The four 90° sector-shaped pillars are staggered and interlocked, that is, the two 90° sector-shaped pillars on the first single-headed makeup brush are respectively intersected with the two 90° sector-shaped pillars on the second single-headed makeup brush.

[0009] During the insertion process, the elastic protrusion on one single-headed makeup brush engages with the groove on another single-headed makeup brush, completing the mortise and tenon connection.

[0010] Once connected, the four 90° fan-shaped pillars form a cylindrical structure with the same diameter as the brush handle, thus ensuring a neat and uniform overall appearance for the double-headed makeup brush.

[0011] Furthermore, to optimize flexibility and ease of assembly during insertion, a gap is provided between the two 90° fan-shaped pillars of the single-headed makeup brush. The width range of this gap is determined through precise calculation to meet the dynamic fit requirements between the elastic protrusion and the groove during insertion, while avoiding unstable connection due to an excessively large gap or increased assembly difficulty due to an excessively small gap.

[0012] The elastic protrusion is made of a material with a certain degree of elasticity and has a small arc-shaped chamfer on its outer surface to guide it smoothly into the groove during insertion. Furthermore, the elastic protrusion has internal reinforcing ribs to enhance its compressive strength and prevent deformation during long-term use. The inner wall of the groove has anti-slip textures to increase the friction between the groove and the elastic protrusion, thereby enhancing the strength of the connection.

[0013] Furthermore, the overall design of the double-headed makeup brush also considers the user's multi-functional needs. Users can choose to use a single-headed makeup brush individually or combine two single-headed brushes to form a double-headed brush. When used individually, the 90° fan-shaped column at the end of the brush handle prevents the accumulation of dirt that is common with traditional plug-in structures, making cleaning and maintenance easier. When used in combination, the double-headed makeup brush has a moderate length and an ergonomic design, making it easy to hold and operate.

[0014] Specifically, this invention can also be equipped with a storage box for storing single-headed makeup brushes. The storage box contains several identical slots, each slot's shape and size matching the handle of the single-headed makeup brush to ensure the brush is securely placed within it. This storage box design not only makes it convenient for users to carry and organize, but also effectively protects the single-headed makeup brushes, preventing damage during transportation or storage.

[0015] The beneficial effects of this invention are as follows: By using two identical single-headed makeup brushes connected by a mortise and tenon structure, the number of molds required is reduced, and only one set of molds is needed to meet production needs, significantly reducing mold costs. Furthermore, since single-headed makeup brushes do not require differentiation between male and female structures, the production and assembly process is simpler and more efficient, improving production efficiency.

[0016] Furthermore, by using four 90° fan-shaped pillars to form a cylindrical structure with the same diameter as the brush handle, the overall appearance of the double-headed makeup brush is made neat and uniform, solving the problem of inconsistent lengths caused by traditional male and female structures and enhancing the product's visual appeal. In addition, due to the absence of a deep insertion hole, dirt does not easily accumulate, making it easier for users to clean and maintain.

[0017] In particular, this invention provides both single-headed and double-headed makeup brushes to meet users' needs in different scenarios. The single-headed brush is suitable for carrying around, while the double-headed brush is suitable for home or professional use, enhancing the product's applicability and market competitiveness.

[0018] In summary, this utility model, through its innovative mortise and tenon structure design, achieves multiple advantages such as low-cost production, efficient assembly, aesthetic appeal, practicality, and ease of cleaning of double-headed makeup brushes, and thus possesses high market application value.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, embodiments of this utility model are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an exploded structural diagram of the double-headed makeup brush of this utility model;

[0022] Figure 2 This is an assembly structure diagram of the double-headed makeup brush in this utility model;

[0023] Figure 3 This is a structural diagram of the single-headed makeup brush of this utility model;

[0024] The attached figures are labeled as follows:

[0025] 1. Brush handle;

[0026] 2. Brush head;

[0027] 3. 90° sector-shaped column;

[0028] 4. Groove;

[0029] 5. Elastic protrusions; Detailed Implementation

[0030] This utility model provides a double-headed makeup brush with a mortise and tenon joint structure, which achieves connection and functional expansion through two identical single-headed makeup brushes. The following is in conjunction with the attached... Figure 1 To be continued Figure 3 The specific embodiments of this utility model are described in detail with reference to the specific component numbers marked in the accompanying drawings.

[0031] like Figure 3 As shown, the single-headed makeup brush includes a handle 1, a brush head 2, and two 90° fan-shaped pillars 3 for connection. The handle 1 has a cylindrical structure with the brush head 2 at the front end and two 90° fan-shaped pillars 3 at the rear end. These two 90° fan-shaped pillars 3 are evenly distributed around the central axis of the handle 1, forming a symmetrical structure. Each 90° fan-shaped pillar 3 has a groove 4 and an elastic protrusion 5 arranged longitudinally along its length on its right-angled face, with the groove 4 located behind the elastic protrusion 5. The geometry of the groove 4 matches the size of the elastic protrusion 5, ensuring a tight fit during insertion. The elastic protrusion 5 is made of a material with a certain degree of elasticity, and its outer surface has a small rounded chamfer to facilitate smooth insertion of the elastic protrusion 5 into the groove 4 during insertion. Furthermore, the elastic protrusion 5 has an internal reinforcing rib structure to enhance its compressive strength and prevent deformation during long-term use. The inner wall of the groove 4 has anti-slip textures to increase the friction between the groove 4 and the elastic protrusion 5, thereby enhancing the strength of the connection.

[0032] To optimize flexibility and ease of assembly during insertion, a gap is provided between the two 90° fan-shaped pillars 3 of the single-headed makeup brush. The width of this gap has been precisely calculated to meet the dynamic fit requirements between the elastic protrusion 5 and the groove 4 during insertion, while avoiding instability due to an excessively large gap or increased assembly difficulty due to an excessively small gap. The gap design allows the four 90° fan-shaped pillars 3 to be staggered more smoothly during insertion.

[0033] like Figure 1 and Figure 2As shown, the double-headed makeup brush is composed of two identical single-headed makeup brushes connected by a mortise and tenon joint. The specific connection method includes the following steps: S1, aligning the rear ends of the two single-headed makeup brushes; S2, interlocking the four 90° fan-shaped pillars 3, i.e., the two 90° fan-shaped pillars 3 on the first single-headed makeup brush are respectively intersected with the two 90° fan-shaped pillars 3 on the second single-headed makeup brush; S3, during the interlocking process, the elastic protrusion 5 on one single-headed makeup brush engages with the groove 4 on the other single-headed makeup brush, completing the mortise and tenon connection. After connection, the four 90° fan-shaped pillars 3 form a cylindrical structure with the same diameter as the brush handle 1, thus ensuring a neat and uniform overall appearance of the double-headed makeup brush. Since the two single-headed makeup brushes are identical, there is no need to distinguish between male and female brush handles, making the connection process simple and efficient.

[0034] In practical applications, users can choose to use a single-headed makeup brush individually or combine two single-headed brushes to form a double-headed makeup brush, depending on their needs. When used individually, the 90° fan-shaped column at the end of the brush handle prevents the accumulation of dirt that is common with traditional plug-in designs, making cleaning and maintenance easier. When used in combination, the double-headed makeup brush is of moderate length and ergonomically designed for easy grip and operation. This design not only enhances the product's aesthetics but also solves the problem of inconsistent lengths in traditional double-headed makeup brushes, thus improving the user experience.

[0035] To further enhance the product's portability and practicality, this utility model can also be equipped with a storage box for storing single-headed makeup brushes. The storage box contains several identical slots, each with a shape and size that matches the handle 1 of the single-headed makeup brush, ensuring the brush is securely placed within the slot. The storage box design not only facilitates carrying and organizing for users but also effectively protects the single-headed makeup brushes, preventing damage during transportation or storage. The storage box can be made of lightweight, durable plastic or environmentally friendly materials, reducing overall weight and aligning with green environmental protection principles.

[0036] During production, since the two single-headed makeup brushes are identical, only one mold needs to be made to meet production needs, significantly reducing mold costs. Simultaneously, because there's no need to distinguish between male and female structures, the assembly process is simpler and more efficient, improving production efficiency. Furthermore, four 90° fan-shaped pillars 3 form a cylindrical structure with the same diameter as the brush handle 1, resulting in a neat and uniform overall appearance for the double-headed makeup brushes. This solves the problem of inconsistent lengths caused by traditional male and female structures, enhancing the product's visual appeal. The absence of a deep insertion hole prevents dirt buildup, facilitating cleaning and maintenance for users.

[0037] This invention achieves multiple advantages for double-headed makeup brushes through an innovative mortise and tenon structure design, including low-cost production, efficient assembly, aesthetic appeal, practicality, and ease of cleaning. Specifically, two single-headed makeup brushes are connected by the staggered insertion of four 90° fan-shaped pillars 3. The grooves 4 and elastic protrusions 5 on the right-angled surfaces of each 90° fan-shaped pillar 3 form a tight fit during insertion. This design not only simplifies mold making and the production process but also enhances the product's appearance and functionality. Users can quickly assemble the double-headed makeup brushes through simple insertion operations and can also disassemble them for use as single-headed brushes as needed. This flexible and diverse usage meets the needs of users in different scenarios, enhancing the product's applicability and market competitiveness.

[0038] In summary, through detailed structural design and process improvements, this utility model achieves functional optimization and user experience enhancement for a double-headed makeup brush, and has high market application value.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A double-ended make-up brush of mortise and tenon construction, characterised in that, It is made of two identical single-headed makeup brushes connected by a mortise and tenon structure; each single-headed makeup brush includes a brush handle (1), a brush head (2) and a 90° fan-shaped column (3) for connection. The brush head (2) is set at the front end of the brush handle (1) and two 90° fan-shaped columns (3) are set at the rear end. The two 90° fan-shaped columns (3) are evenly distributed around the central axis of the brush handle (1). Each 90° fan-shaped column (3) has at least one groove (4) and at least one elastic protrusion (5) arranged in a front-to-back arrangement along the length direction on the right-angled surface. The groove (4) is located behind the elastic protrusion (5).

2. The double-ended makeup brush of claim 1, wherein, The outer surface of the elastic protrusion (5) is provided with a small arc-shaped chamfer, and the interior is provided with a reinforcing rib structure.

3. The double-ended makeup brush of claim 1, wherein, A gap is set between the two 90° sector-shaped columns (3).

4. The double-ended makeup brush of claim 1, wherein, Four 90° sector-shaped columns (3) form a cylindrical structure with the same diameter as the brush handle (1).

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