Belt buckle and waistband

Abstract

The belt buckle comprises a connecting base and a buckle head, the buckle head is provided with an adjusting mechanism for adjusting the tightening state of a belt, and when the occlusal surface of a pressing roller of the adjusting mechanism directly faces a supporting piece, the distance between the occlusal surface of the pressing roller and a rotating shaft is gradually increased in the direction from the rotating shaft to the connecting base, so that after the belt is tightly pressed by the occlusal surface, the belt is tightened by the buckle head. When the tail end of the belt is pulled out of the buckle head, the compression roller can be driven to rotate towards the direction of extruding the belt, so that the extrusion force between the occlusal surface and the belt is increased, and the self-locking effect of the buckle head on the belt is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of clothing, in particular to a belt buckle and a belt. Background Art

[0002] Belt buckle, also known as belt head, buckle head, is an indispensable part of the belt. The belt buckle is usually fixed at the head end of the belt. When in use, the tail end of the belt is wrapped around the waist and then passed through the belt buckle, and the belt is locked and released by the belt buckle. Existing belt buckles are mainly divided into two types: pin buckle and sliding buckle. Pin buckle type needs to be used with the pin buckle on the belt. The pin buckles on the belt are spaced apart. Since the pin buckles have intervals, the accuracy of adjusting the tightness of the belt is affected by the size of the pinhole interval. If necessary, the pin buckle needs to be manually added according to the waist circumference of the user. Therefore, the structure of this type of belt buckle is relatively complex and inconvenient to operate. The sliding buckle belt is a belt with continuously distributed buckle grooves on the inner surface of the belt, and the buckle head is set on a tongue that matches the buckle groove. The locking state of the belt is adjusted by controlling the separation and combination of the tongue and the buckle groove. Although the belt of this structure is more convenient to use, the surface of the buckle groove will be worn after long-term use. When the belt is tightened, the tongue is very easy to slip out of the buckle groove, so that the belt buckle will slip when it cannot withstand a large tensile force, which seriously affects the normal use of the belt. Utility Model Content

[0003] The embodiment of the utility model aims to provide a belt buckle and a belt, which can solve at least one of the above-mentioned technical problems of the existing belts.

[0004] The utility model embodiment solves its technical problems by adopting the following technical solutions:

[0005] According to a first aspect of the present application, a belt buckle disclosed in the present application comprises:

[0006] A connecting seat, one end of which is used to fix the first end of the belt;

[0007] A buckle head, the buckle head is fixed to the other end of the connecting seat, the buckle head is provided with an adjustment mechanism for adjusting the locking state of the tail end of the belt, the adjustment mechanism includes a support member, and a pressure roller arranged opposite to the support member, and a gap is provided between the pressure roller and the support member for the tail end of the belt to pass through;

[0008] The buckle head also includes a rotating shaft for the pressure roller to rotate, and the surface of the pressure roller is provided with an engaging surface for locking the belt by extrusion, and the engaging surface is a curved surface. When the engaging surface is facing the support member, the distance between the engaging surface and the rotating shaft gradually increases from the rotating shaft to the connecting seat, so that when the tail end of the belt is pulled away from the buckle head, the pressure roller rotates driven by the belt, thereby pressing the belt against the support member to achieve locking of the belt.

[0009] In a possible implementation of the belt buckle of the present application, the cross-section of the occlusal surface is arc-shaped, and the rotating shaft is eccentrically arranged relative to the occlusal surface.

[0010] In a possible implementation of the belt buckle of the present application, the occlusal surface is located on one side surface of the pressure roller, and the other side surface of the pressure roller is provided with an operating portion that is convenient for finger manipulation.

[0011] In a possible implementation of the belt buckle of the present application, the occlusal surface is provided with a plurality of racks extending along the axial direction of the pressure roller.

[0012] In a possible implementation of the belt buckle of the present application, the tooth tops of the rack are provided with a rounded structure.

[0013] In a possible implementation of the belt buckle of the present application, both ends of the rack are provided with slope surfaces for eliminating tooth top corners.

[0014] In a possible implementation of the belt buckle of the present application, an anti-slip structure is provided on the tooth tops of the rack.

[0015] In a possible implementation manner of the belt buckle of the present application, when the occlusal surface is facing the supporting member, the curvature of the occlusal surface gradually decreases in the direction from the rotating axis to the connecting seat.

[0016] In a possible implementation of the belt buckle of the present application, the adjustment mechanism is disposed at a first end of the buckle head adjacent to the connecting seat, or at a second end of the buckle head away from the connecting seat, or between the first end and the second end of the buckle head.

[0017] According to the second aspect of the present application, the present application also discloses a belt, comprising the belt buckle described above, and a belt fixed to the belt buckle, wherein the head end of the belt is fixed to the connecting seat of the belt buckle.

[0018] The belt buckle and belt disclosed by the utility model have a occlusal surface of the pressure roller facing the support member, and the distance between the occlusal surface of the pressure roller and the rotating shaft gradually increases from the rotating shaft to the connecting seat direction. In this way, after the belt is pressed by the occlusal surface, when the tail end of the belt is pulled out of the buckle head, the pressure roller can be driven to rotate in the direction of squeezing the belt, thereby increasing the squeezing force between the occlusal surface and the belt, and realizing the self-locking effect of the buckle head on the belt. Moreover, as the tension on the belt increases, the self-locking occlusal force of the belt increases, which prevents the belt from self-decoupling and ensures reliable safety when used; when the belt needs to be loosened, just pull the tail of the belt in the tightening direction so that the belt drives the pressure roller to reverse, so that the space between the pressure roller and the support member is increased to achieve decoupling, and then use the finger to move the pressure roller to continue to rotate, so that the belt can be freely pulled out from between the pressure roller and the support member. The belt has a simple structure, has a reliable self-locking function when the belt is tensioned, and is easy to operate when loosening the belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] Figure 1 This is a schematic diagram of a three-dimensional structure of a belt buckle in one embodiment of the utility model;

[0021] Figure 2 This is an assembly diagram of a belt buckle in one embodiment of the utility model;

[0022] Figure 3 This is a front view of a belt buckle in one embodiment of the utility model;

[0023] Figure 4 for Figure 3 Middle AA section view;

[0024] Figure 5 This is a schematic structural diagram of a pressure roller in one embodiment of the utility model;

[0025] Figure 6 In one embodiment of the utility model, Figure 4 A partial cross-sectional view of the belt buckle in use from a viewing angle;

[0026] Figure 7 A side view of a pressure roller in one embodiment of the utility model;

[0027] Figure 8 This is a comparison diagram of the geometric principles of the two types of occlusal surfaces, a spiral curve and an arc, in one embodiment of the utility model.

[0028] Figure numbers and corresponding meanings:

[0029] Belt buckle 100, connecting seat 100a, buckle head 100b;

[0030] Belt 200, belt head end 200a, belt tail end 200b;

[0031] Support member 1;

[0032] Pressing roller 2, occlusal surface 21, shaft hole 22, operating part 23;

[0033] Axis 3;

[0034] Rack 4, rounded corners 41, slope 42;

[0035] Socket 5. DETAILED DESCRIPTION

[0036] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element, or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element, or there can be one or more centered elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model.

[0037] In addition, the terms "first", "second", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance. "Include" or "comprises" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Unless otherwise defined, the features such as "parallel", "vertical", and "same" used in the embodiments of the present utility model include "parallel", "vertical", "same" and other situations in a strict sense, as well as "approximately parallel", "approximately vertical", "approximately the same" and other situations containing certain errors. For example, the above-mentioned "approximately" can mean that the difference of the compared objects is within 10% or 5% of the average value of the compared objects. When the number of a component or element is not specifically indicated in the following of the embodiments of the present utility model, it means that the component or element can be one or more, or can be understood as at least one. "At least one" refers to one or more, and "multiple" refers to at least two.

[0038] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0039] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] A waist belt disclosed in this embodiment is as follows Figure 1-Figure 4As shown, it includes a belt buckle 100 and a belt 200 fixed on the belt buckle 100, the belt buckle 100 includes a connecting seat 100a and a buckle head 100b, the belt 200 includes a belt head end 200a and a belt tail end 200b, one end of the connecting seat 100a is fixed to the belt head end 200a, and the other end of the connecting seat 100a is fixedly connected to the buckle head 100b. The buckle head 100b is provided with an adjustment mechanism for adjusting the locking state of the belt tail end 200b, the adjustment mechanism includes a support member 1, and a pressure roller 2 arranged opposite to the support member 1, and a gap is provided between the pressure roller 2 and the support member 1 for the belt tail end 200a to pass through. The buckle head 100b also includes a rotating shaft 3 for the pressure roller 2 to rotate. The surface of the pressure roller 2 is provided with an engaging surface 21 for locking the belt by squeezing. The engaging surface 21 is a curved surface. When the engaging surface 21 faces the support 1, the distance between the engaging surface 21 and the rotating shaft 3 gradually increases from the rotating shaft 3 to the connecting seat 100a, so that when the belt tail 200b is pulled away from the buckle head 100b, the pressure roller 2 rotates under the drive of the belt 200, thereby pressing the belt 200 against the support 1 to achieve the locking of the belt 200. The material of the belt 200 is not limited to leather, but can also be other materials, such as fabric.

[0041] Specifically, the fixed connection between the connecting seat 100a and the buckle head 100b can be an integrally formed structure or a rotating connection. The support member 1 and the pressure roller 2 are arranged in a direction perpendicular to the belt 200, and the support member 1 is located on the outside of the pressure roller 2, that is, when the belt buckle 100 is in use, the pressure roller 2 is located on the inner side of the buckle head 100b adjacent to the human body, and the support member 1 is located on the outer side away from the human body. The support member 1 is an arched structure that bulges outward, and the pressure roller 2 is arranged between the two ends of the arched structure, so that a gap is formed between the pressure roller 2 and the support member 1 for the belt tail end 200b to pass through. The two ends of the pressure roller 2 are fixedly connected to the skeleton of the buckle head 100b through the rotating shaft 3, and the pressure roller 2 can rotate around the rotating shaft 3.

[0042] In this embodiment, Figure 2 and Figure 5 As shown, the pressure roller 2 is provided with an axial hole 22 for passing the rotating shaft 3, and the axial hole 22 extends from one end face of the pressure roller 2 to the other end face, and the two ends of the rotating shaft 3 are fixedly connected to the buckle head 100b, so that the pressure roller 2 can realize self-rotation around the rotating shaft 3. Of course, in other embodiments of the present application, the rotating shaft 3 can also be fixedly connected to the two end faces of the pressure roller 2 and rotatably connected to the frame of the buckle head 100b, so that the rotating shaft 3 and the pressure roller 2 can rotate synchronously. Figure 4 and Figure 6As shown, the occlusal surface 21 is located on one side of the pressure roller 2, and the positional relationship between the occlusal surface 21 and the rotating shaft 3 satisfies: when the pressure roller 2 rotates to the occlusal surface 21 facing the support member 1, the occlusal surface 21 extends along an arc from the rotating shaft 3 to the connecting seat 100a, and the distance between the occlusal surface 21 and the rotating shaft 3 gradually increases in the direction from the rotating shaft 3 to the connecting seat 100a. In this way, when the pressure roller 2 is rotated in the direction of gradually approaching the support member 1 with the occlusal surface 21 facing the support member 1, the gap between the occlusal surface 21 and the support member 1 gradually decreases. In this process, the belt tail end 200b located in the gap will be pressed against the surface of the support member 1 by the occlusal surface 21. At this time, if the belt tail end 200b is pulled away in the direction of the buckle 100b, the pressure roller 2 will be driven by the belt tail end 200b, and there will be a tendency to rotate in the direction of reducing the gap, thereby further increasing the positive pressure between the occlusal surface 21 and the surface of the belt tail end 200b. As the positive pressure between the occlusal surface 21 and the surface of the belt tail end 200b increases, the friction between the two increases accordingly. When the friction is greater than the tension of the belt 200 expanding outward, the adjustment mechanism realizes the self-locking effect of the belt 200. That is, when the pulling force of the belt tail end 200b to pull out of the buckle 100b is less than the friction between the surface of the belt 200 and the occlusal surface 21, the belt 200 cannot move freely between the pressure roller 2 and the support member 1, and the greater the pulling force on the belt 200, the greater the occlusal pressure of the occlusal surface 21, the greater the friction between the occlusal surface 21 and the surface of the belt 200, and the more firmly the belt 200 is locked by the adjustment mechanism.

[0043] In one embodiment of the present application, the cross section of the occlusal surface 21 is in an arc shape, and the position of the rotating shaft 3 at the end surface of the pressure roller 2 is eccentrically arranged relative to the occlusal surface 21, so that when the occlusal surface 21 faces the support member 1, the distance between the occlusal surface 21 and the rotating shaft 3 gradually increases in the direction from the rotating shaft 3 to the connecting seat 100a. In another embodiment of the present application, Figure 7 As shown, when the occlusal surface 21 faces the support member 1, the curvature of the occlusal surface 21 gradually decreases in the direction from the rotation axis 3 to the connection seat 100a, that is, the cross-sectional profile of the occlusal surface 21 is a spiral curve, and the curvature of the occlusal surface 21 decreases as the distance from the rotation axis 3 increases. Figure 8 As shown, Figure 8 The dotted line portion is a schematic diagram of the structure when the occlusal surface 21 is in an arc shape. Compared with the arc shape, the cross section of the occlusal surface 21 is designed as a spiral curve with a changing curvature. Under the condition of constant thickness, the distance between the farthest section of the occlusal surface 21 and the rotating shaft 3 is greater. Therefore, the space in the direction perpendicular to the belt 200 of the buckle head 100b is not occupied, and the limit size of the occlusal surface 21 from the support member 1 can be made smaller, thereby increasing the working space of the pressure roller 2. In this way, when the belt 200 becomes thinner due to long-term use, the pressure roller 2 can still achieve self-locking, thereby extending the service life of the belt.

[0044] like Figure 4 and Figure 5 As shown, the occlusal surface 21 is located on one side of the pressure roller 2, and the other side of the pressure roller 2 is provided with an operating portion 22 for easy finger manipulation. In this embodiment, the operating portion 22 is a flat portion arranged on the surface of the pressure roller 2, that is, a plane arranged on the side of the pressure roller 2 away from the occlusal surface 21. When in use, the thumb acts on the plane to facilitate the rotation of the pressure roller 2. When the belt needs to be tightened, the belt tail end 200b is passed through the gap between the pressure roller 2 and the support member 1, and then the pressure roller 2 is manipulated in the direction of tightening the belt 200 with the thumb, so that the pressure roller 2 presses the belt 200 against the support member 1 to achieve self-locking of the belt. When the belt needs to be untied, the belt tail end 200b is pulled in the tightening direction, and the pressure roller 2 rotates in the direction of increasing the gap driven by the belt 200, and then the operating portion 23 is manipulated with the finger to rotate the pressure roller 2 in the opposite direction until the operating portion 23 is facing the support member 1. At this time, the gap between the operating portion 23 and the supporting member 1 is larger than the thickness of the belt 200 , and the belt 200 can be freely withdrawn.

[0045] like Figure 5 As shown, in order to increase the bite force of the bite surface 21, a plurality of racks 4 are provided on the surface of the bite surface 21, and the racks 4 extend along the axial direction of the pressure roller 2. That is, the contour line of the cross section of the bite surface 21 serves as the tooth root circle or tooth root curve (the connecting line of the tooth roots) of the rack 4. In order to prevent the tooth tops of the rack 4 from damaging the belt 200, the tooth tops of the rack 4 are provided with chamfers 41, and the chamfers 41 make the rack 4 and the inner surface of the belt 200 in surface contact, reduce the pressure between the tooth tops and the belt 200, thereby reducing the wear of the rack 4 on the belt 200 and extending the service life of the belt.

[0046] like Figure 5 As shown, since there are sharp corners at both ends of the tooth tops of the rack 4, when the rack 4 is engaged with the belt 200, these corners are very likely to scratch or puncture the belt 200. In order to solve this problem, in this embodiment, both ends of the rack 4 are provided with slopes 42 for eliminating the corners of the tooth tops. The slopes 42 make the two ends of the rack 4 contact with the belt 200 in a surface manner, preventing the corners of the tooth tops at both ends of the rack 4 from scratching the belt 200, further extending the service life of the belt 200.

[0047] The tooth top rounded corner 41 of the rack 4 is also provided with an anti-skid structure, such as particles distributed on the surface of the tooth top rounded corner 41, or anti-skid patterns, etc. The anti-skid structure can increase the surface roughness of the occlusal surface 21 to prevent the occlusal surface 21 from slipping, and can also avoid sharp protrusions from scratching the belt.

[0048] like Figure 1As shown, in this embodiment, the adjustment mechanism is arranged at the first end of the buckle head 100b adjacent to the connecting seat 100a, and the second end of the buckle head 100b away from the connecting seat 100a is also provided with a socket 5 for the belt tail end 200b to pass through, and the socket 5 guides and constrains the belt tail end 200b, which is convenient for use. In other embodiments of the present application, the adjustment mechanism can also be arranged at the socket 5, or the gap between the pressure roller 2 and the support member 1 replaces the socket 5, or the adjustment mechanism is arranged between the first end and the second end of the buckle head 100b.

[0049] The belt buckle and belt disclosed by the utility model have a occlusal surface of the pressure roller facing the support member, and the distance between the occlusal surface of the pressure roller and the rotating shaft gradually increases from the rotating shaft to the connecting seat direction. In this way, after the belt is pressed by the occlusal surface, when the tail end of the belt is pulled out of the buckle head, the pressure roller can be driven to rotate in the direction of squeezing the belt, thereby increasing the squeezing force between the occlusal surface and the belt, and realizing the self-locking effect of the buckle head on the belt. Moreover, as the tension on the belt increases, the self-locking occlusal force of the belt increases, which prevents the belt from self-decoupling and ensures reliable safety when used; when the belt needs to be loosened, just pull the tail of the belt in the tightening direction so that the belt drives the pressure roller to reverse, so that the space between the pressure roller and the support member is increased to achieve decoupling, and then use the finger to move the pressure roller to continue to rotate, so that the belt can be freely pulled out from between the pressure roller and the support member. The belt has a simple structure and is easy to operate. It has a reliable self-locking function when the belt is tightened, and is easy to operate when the belt is loosened.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A belt buckle, characterized in that: include: A connecting seat, one end of which is used to fix the first end of the belt; A buckle head, the buckle head is fixed to the other end of the connecting seat, the buckle head is provided with an adjustment mechanism for adjusting the locking state of the belt tail end, the adjustment mechanism includes a support member, and a pressure roller arranged opposite to the support member, and a gap is provided between the pressure roller and the support member for the belt tail end to pass through; The buckle head also includes a rotating shaft for the pressure roller to rotate, and the surface of the pressure roller is provided with an engaging surface for locking the belt by extrusion, and the engaging surface is a curved surface. When the engaging surface is facing the support member, the distance between the engaging surface and the rotating shaft gradually increases from the rotating shaft to the connecting seat, so that when the tail end of the belt is pulled away from the buckle head, the pressure roller rotates driven by the belt, thereby pressing the belt against the support member to achieve locking of the belt.

2. The belt buckle according to claim 1, characterized in that: The cross section of the occlusal surface is arc-shaped, and the rotating shaft is eccentrically arranged relative to the occlusal surface.

3. The belt buckle according to claim 1, characterized in that: The occlusal surface is located on one side surface of the pressing roller, and the other side surface of the pressing roller is provided with an operating portion that is convenient for finger manipulation.

4. The belt buckle according to claim 1, characterized in that: The occlusal surface is provided with a plurality of racks extending along the axial direction of the pressure roller.

5. The belt buckle according to claim 4, characterized in that: The tooth top of the rack is provided with a rounded structure.

6. The belt buckle according to claim 4, characterized in that: Both ends of the rack are provided with slope surfaces for eliminating tooth top corners.

7. The belt buckle according to any one of claims 4 to 6, characterized in that: The tooth tops of the rack are provided with anti-slip structures.

8. The belt buckle according to claim 1, characterized in that: When the occlusal surface faces the supporting member, the curvature of the occlusal surface gradually decreases in the direction from the rotating axis to the connecting seat.

9. The belt buckle according to claim 8, characterized in that: The adjustment mechanism is arranged at the first end of the buckle head adjacent to the connecting seat, or at the second end of the buckle head away from the connecting seat, or between the first end and the second end of the buckle head.

10. A waist belt, characterized in that: It comprises the belt buckle as described in any one of claims 1 to 9, and a belt fixed to the belt buckle, wherein the head end of the belt is fixed to the connecting seat of the belt buckle.

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