A chute type self-locking belt buckle and a belt assembly

Abstract

The utility model relates to the field of belt, concretely relates to a chute type self -locking belt fastener and belt assembly. The chute type self -locking belt fastener includes the buckle head frame, is equipped with the longitudinal belt passageway inside, sliding part is transversely inserted in the frame, can move along the longitudinal direction, the oblique chute is equipped with in the frame both sides, and the sliding part is through the inclined surface self -locking principle and is pressed tightly when moving along the chute. Compared with the prior art, the application does not need to carry out the punching, the pressure tooth etc. operation on the belt, avoids the damage to the belt, reduces the processing capacity simultaneously, keeps the belt integrity and the aesthetic degree, prolongs the service life of belt.

Description

Technical Field

[0001] This utility model relates to the field of belts, specifically to a grooved self-locking belt buckle and belt assembly. Background Technology

[0002] There are many types of belt buckles on the market, but they all have obvious defects:

[0003] Pin buckles can easily leave rough marks on belts and make the holes on the belts larger;

[0004] Over time, the eyelets on belt buckles and smooth buckles will enlarge.

[0005] Automatic buckles make noise when pulled, and the belt will be unusable after the plastic ages. Even if repaired, it takes a lot of time to replace the plastic rack. Toothless automatic buckles are prone to leaving tooth marks on the back of the belt, which will make the back of the belt rough over time.

[0006] Existing roller belt buckles are surface-to-line contact, which cannot form a self-locking mechanism. To clamp the belt, it is necessary to press teeth or roughen the surface of the belt, or to engrave teeth on the circumference of the roller. This increases the number of processes, causes the back of the belt to become rough, affecting its appearance and lifespan, and requires a lot of force to tighten the belt, otherwise it is easy to loosen.

[0007] In general, most belt buckles on the market require drilling holes, pressing teeth, or installing toothed racks on the belt, which makes the belt prone to fraying and various dents, affecting its appearance and lifespan. Utility Model Content

[0008] In view of the above, the purpose of this utility model is to address the problems of the prior art by providing a sliding groove self-locking belt buckle that eliminates the need for drilling holes in the belt, installing plastic toothed racks on the belt, pressing teeth on the belt, and avoids various indentations that may occur during belt use, while being easy to operate and durable.

[0009] One type of sliding self-locking belt buckle in this solution includes:

[0010] Buckle frame: Internally equipped with a longitudinal belt channel;

[0011] Sliding component: It is inserted laterally into the frame and can move longitudinally;

[0012] Inclined slide: Located on both sides of the frame, with an inclination angle of 6°-8°. When the sliding parts move along the slide, the belt is pressed by the self-locking principle of the inclined surface.

[0013] The self-locking mechanism of this solution is as follows: when the belt is under tension, it drives the sliding component to squeeze the belt along the groove.

[0014] As a further solution, a rubber layer is adhered to the contact surface of the sliding component. The rubber layer has a thickness of 0.5-2.5 mm and a Shore hardness of 30A-70A. Assuming the sliding component is rigid, a large thrust is required to press or unlock it when in contact with the belt. This invention, by setting a rubber layer on the contact surface of the wedge block, utilizes the elastic deformation characteristics of rubber. When a pressing or releasing thrust is applied, the rubber layer and the belt contact surface undergo local deformation, breaking the static friction balance and significantly reducing the pressing or releasing force. Moreover, the rubber layer and the belt have flexible contact, avoiding belt indentations, and is suitable for various belt materials such as top-grain cowhide and plastic.

[0015] More specifically, the sliding component includes a shaft and screws at both ends. The shaft has a first plane and a second plane that are parallel to each other. The first plane is the contact surface. The two planes cooperate with the inner wall of the slide groove to prevent the sliding component from rotating and guide linear movement.

[0016] Compared with the prior art, this application has the following advantages:

[0017] 1. Most existing belt buckles require drilling holes, pressing teeth, or installing toothed racks on the belt, which leads to the belt becoming fuzzy and developing various indentations during use, affecting its appearance and lifespan. This invention eliminates the need for drilling holes or pressing teeth on the belt, avoiding damage, reducing processing work, maintaining the belt's integrity and appearance, extending its lifespan, and improving economic efficiency.

[0018] 2. Utilizing the principle of inclined plane self-locking, after the belt is inserted, the sliding body is manually operated to move along the slide groove until it contacts the belt. When the belt is pulled, it drives the sliding body to squeeze the belt along the slide groove, thereby achieving automatic locking and ensuring that the belt will not loosen during use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the connection between the belt and the belt buckle.

[0020] Figure 2 This is a schematic diagram illustrating the self-locking principle of a belt buckle.

[0021] Figure 3 This is a three-dimensional structural diagram of a belt buckle;

[0022] Figure 4 Here is an exploded view of the belt buckle structure;

[0023] Reference numerals: buckle frame 1, slide 101, belt 2, slider 3, shaft 301, screw 302, rubber layer 4. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0025] Reference Figures 1 to 4 The diagram shows a grooved self-locking belt buckle. It includes a buckle frame 1 and a sliding component 3.

[0026] The buckle frame 1 is the main body of the entire belt buckle, and a longitudinally continuous belt channel 2 is constructed inside it. Slide grooves 101 are provided on both sides of the frame. The slide grooves 101 are arranged obliquely upward along the direction of the belt 2 away from the buckle frame 1, and their inclination angle is limited to the range of 6°-8°.

[0027] The sliding member 3 is transversely inserted into the channel of the buckle frame 1, possessing the freedom to move longitudinally. The sliding member 3 consists of a shaft 301 and screws 302 mounted at both ends of the shaft 301. The shaft 301 has a first parallel plane and a second parallel plane, with the first plane serving as the working surface that directly contacts the belt 2. The shaft 301 is fixed to the slide groove 101 of the buckle frame 1 by the screws 302 at both ends, which effectively prevent axial movement of the shaft 301. The first and second planes form a contact fit with the upper and lower walls of the slide groove 101. This dual-plane design guides the shaft 301 to move stably and linearly along the slide groove 101, and also restricts the rotation of the shaft 301 through the contact between the planes and the walls, ensuring that the sliding member 3 maintains the correct posture during operation, thereby reliably fulfilling the function of squeezing the belt 2.

[0028] The principle of this application is as follows: After the belt 2 is inserted into the buckle frame 1, the sliding member 3 is manually moved along the slide groove 101 towards the belt 2 until the first plane of the sliding member 3 contacts the belt 2. At this time, the sliding member 3 is positioned at a higher point in the slide groove 101. When the belt 2 is subjected to an outward pulling force, the belt 2 tends to move outward from the buckle frame 1. Due to the friction between the sliding member 3 and the belt 2, the movement of the belt 2 will drive the sliding member 3 to move obliquely upward along the slide groove 101, that is, in the direction where the belt 2 leaves the buckle frame 1. As the sliding member 3 moves, its position in the slide groove 101 gradually rises, and the oblique upward design of the slide groove 101 causes the pressure of the sliding member 3 on the belt 2 to gradually increase. According to the principle of inclined plane self-locking, the normal pressure of the sliding member 3 on the belt 2 increases as it moves along the slide groove 101, which in turn increases the friction, forming a self-locking effect, thereby effectively preventing the belt 2 from sliding outward and achieving a reliable self-locking function. Example

[0029] To further optimize the performance of the belt buckle, this embodiment, based on embodiment 1, adds a rubber layer 4 to the first plane of the sliding member 3. This rubber layer 4 has a certain thickness; the thickness is adjusted accordingly to accommodate different belt thicknesses without requiring changes to the buckle size, reducing the number of molds and saving development costs. The rubber layer thickness is controlled between 0.5-2.5 mm, with a Shore hardness of 30A-70A. When a rigid sliding body contacts the belt, a large thrust is required for tightening and unlocking. This invention, by adding a rubber layer to the sliding body with a thickness controlled between 0.5-2.5 mm and a Shore hardness of 30A-70A, ensures a moderate level of softness and hardness. Utilizing the elastic deformation characteristics of rubber, local deformation occurs at the contact surface between the rubber layer and the belt when tightening and unlocking forces are applied, breaking the static friction balance and significantly reducing the applied force. Furthermore, the rubber layer and belt have flexible contact, avoiding belt indentations, making it suitable for belts made of various materials such as top-grain leather and plastic.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grooved self-locking belt buckle, characterized in that, include: The buckle frame (1) has a channel inside for inserting the belt (2) longitudinally; The sliding member (3) is inserted in the channel and can move longitudinally. The buckle frame (1) has a sliding groove (101) on both sides, which is obliquely upward along the direction of the belt (2) leaving the buckle frame (1). When the belt (2) is inserted into the buckle frame (1), the sliding member (3) is manually operated to move along the sliding groove (101) to contact the belt (2). Due to the friction, when the belt (2) is subjected to an outward pulling force, it will drive the sliding member (3) to squeeze the belt (2) along the sliding groove (101) to achieve self-locking.

2. The grooved self-locking belt buckle according to claim 1, characterized in that, The inclination angle of the chute (101) is 6°-8°.

3. A grooved self-locking belt buckle according to claim 1 or 2, characterized in that, The sliding member (3) has a contact surface that cooperates with the belt (2), and a rubber layer (4) is provided on the contact surface of the sliding member (3).

4. A grooved self-locking belt buckle according to claim 3, characterized in that, The thickness of the rubber layer (4) is 0.5-2.5 mm, and the Shore hardness is 30A-70A.

5. A grooved self-locking belt buckle according to claim 1, characterized in that, The sliding member (3) includes a shaft (301) and screws (302) at both ends of the shaft (301). The shaft (301) has a first plane and a second plane arranged in parallel. The first plane is a contact surface. The shaft (301) is inserted into the groove (101) of the buckle frame (1). The screws (302) at both ends are used to fix the shaft (301) to prevent it from moving axially and falling off. The first plane and the second plane and the upper and lower walls of the groove (101) form a contact fit, which can guide the shaft (301) to move while preventing the shaft (301) from rotating.

6. A belt assembly, characterized in that, Includes a belt (2) and a grooved self-locking belt buckle as described in claim 1.

Images