A multi-adjustment back buckle assembly

Abstract

The utility model discloses a kind of multi-grade adjusting back buckle assemblies, the utility model relates to the technical field of clothing accessories, the multi-grade adjusting back buckle assembly, including first strap, the first strap is flexible structure, and the left side of first strap is fixedly connected with connecting piece, the inside of connecting piece is linear array and is provided with two connecting holes, the utility model is formed rigid locking by the tooth slot of screw subassembly and step groove, compared with the friction force fixing mode of traditional buckle type back buckle, can bear greater tension without sliding, ensure that the length of braces is constant in the process of movement, limit band cooperates with lead-in groove, guide first strap moves along axial direction, prevent lateral deviation or distortion when adjusting, improve use stability, the elastic support of rubber side plate subassembly reduces mechanical wear, prolongs back buckle assembly service life, while knob component ergonomics design makes adjusting operation more labor-saving, single hand can be completed, significantly improve user experience.

Description

Technical Field

[0001] This utility model relates to the field of clothing accessories technology, specifically a multi-position adjustable back buckle assembly. Background Technology

[0002] In daily life and work, the length of clothing straps, backpack straps, etc., often needs to be adjusted according to the body shape, wearing needs, or actual usage scenarios of different users. An existing patent, patent publication number CN217695353U, describes an underwear back buckle comprising a buckle ring and a hook. The buckle ring and hook can be connected to the left and right sides of the corresponding underwear straps without sewing, allowing the wearer to adjust the tightness of the underwear straps based on the engagement of the buckle ring and hook. The fact that the buckle ring and hook are connected to the corresponding straps without sewing avoids discomfort caused by seam friction when wearing the underwear and ensures a secure connection between the buckle ring / hook and the corresponding strap.

[0003] Regarding the aforementioned technologies, the inventors believe that the following defects exist: some traditional back buckles can only achieve a few simple adjustments, which cannot accurately adapt to the differences in body shape of different users, resulting in poor wearing comfort. For example, common three- or four-position fixed buckles are difficult to provide suitable length adjustment for users with special body shapes or strict requirements on the length of the straps. Therefore, we have proposed a multi-position adjustable back buckle component to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a multi-position adjustable back buckle assembly, which solves the problem that some traditional back buckles can only achieve a few simple adjustments, making it impossible to accurately adapt to the differences in body shape among different users, resulting in poor wearing comfort. For example, common three- or four-position fixed buckles are difficult to provide suitable length adjustment for users with special body shapes or strict requirements on the length of the straps.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a multi-position adjustable back buckle assembly, including a first strap, the first strap being a flexible structure, and a connector being fixedly connected to the left side of the first strap, the connector having two connecting holes arranged in a linear array inside;

[0006] The connecting hole is used to connect with the underwear body, and a through groove is provided on the inner side of the first strap. A flexible steel plate is sewn inside the through groove, and the flexible steel plate has step grooves arranged in a linear array inside.

[0007] Preferably, a second strap is provided on the right side of the first strap. The second strap is a flexible structure, and a connector is also fixedly connected to the right side of the second strap.

[0008] Preferably, the second strap is sewn to form an inlet groove that matches the first strap, and a connecting strap is fixedly connected to the side of the second strap closer to the first strap.

[0009] Preferably, the connecting strap is provided in two places, and the two connecting straps are fixedly connected to the upper and lower sides of the outer side of the second strap in opposite directions.

[0010] Preferably, a limiting strap is also fixedly connected to the side of the two connecting straps away from the second strap, and the limiting strap is a flexible structure.

[0011] Preferably, the limiting band is used to guide the first binding band, and a side plate assembly is fixedly connected to the side of the limiting band near the second binding band. The side plate assembly is made of rubber.

[0012] Preferably, the side plate assembly has two locations, which are fixedly connected in a linear array to the left and right sides of the rear end face of the limiting belt. The inner sides of the two side plate assemblies are also rotatably connected to a rotating shaft assembly, and the outer side of the rotating shaft assembly is fixedly connected to a spiral assembly. The spiral assembly matches the stepping groove and is used to guide the first strap. The outer side of the rotating shaft assembly is fixedly connected to a knob assembly.

[0013] Beneficial effects

[0014] This invention provides a multi-position adjustable back buckle assembly. Compared with the prior art, it has the following advantages:

[0015] This multi-position adjustable back buckle assembly forms a rigid lock through the toothed grooves and stepping grooves of the spiral assembly. Compared with the friction-fixed method of traditional buckle back buckles, it can withstand greater tension without slipping, ensuring that the length of the strap remains constant during movement. The limiting band and the guide groove cooperate to guide the first strap to move axially, preventing lateral offset or twisting during adjustment and improving stability. The elastic support of the rubber side plate assembly reduces mechanical wear and extends the service life of the back buckle assembly. At the same time, the ergonomic design of the knob assembly makes the adjustment operation more effortless, which can be completed with one hand, significantly improving the user experience.

[0016] This multi-position adjustable back buckle assembly upgrades the traditional back buckle's buckle adjustment to multi-position linear adjustment through the cooperation of the spiral component and the stepping groove. Users can precisely adjust the strap length according to differences in body shape. For example, for users with different shoulder widths, the strap can be tightened or loosened step by step by rotating the knob component to make the strap tightness suit individual needs. This solves the comfort problem caused by insufficient adjustment positions of traditional back buckles. The flexible steel plate enhances the structural rigidity of the first strap to avoid strap deformation during adjustment, which affects the accuracy and further ensures the adjustment effect. Attached Figure Description

[0017] Figure 1 This is a front view of the multi-position adjustable back buckle assembly of this utility model.

[0018] Figure 2 This is a schematic diagram of the right side view of the multi-position adjustable back buckle assembly of this utility model;

[0019] Figure 3 This is a schematic diagram of the first strap structure of the multi-position adjustable back buckle assembly of this utility model;

[0020] Figure 4 This is a schematic diagram of the overall front view structure of the multi-level adjustable back buckle assembly of this utility model;

[0021] Figure 5 This is a top view schematic diagram of the overall structure of the multi-level adjustable back buckle assembly of this utility model;

[0022] Figure 6 This is a schematic diagram of the overall left-side structure of the multi-level adjustable back buckle assembly of this utility model.

[0023] In the figure: 1. First strap; 101. Connector; 1011. Connecting hole; 1012. Flexible steel plate; 1013. Stepping groove; 2. Second strap; 201. Guide groove; 3. Connecting belt; 301. Limiting belt; 3011. Side plate assembly; 3012. Rotating shaft assembly; 3013. Spiral assembly; 3014. Knob assembly. 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.

[0025] Please see Figures 1-6 The present invention provides a technical solution: a multi-level adjustable back buckle assembly, including a first strap 1, the first strap 1 being a flexible structure, and a connector 101 fixedly connected to the left side of the first strap 1, the connector 101 having two connecting holes 1011 arranged in a linear array inside;

[0026] The connecting hole 1011 is used to connect with the underwear body, and the inner side of the first strap 1 is provided with a through groove. A flexible steel plate 1012 is sewn inside the through groove, and the flexible steel plate 1012 is provided with stepping grooves 1013 in a straight line array inside.

[0027] The first strap 1 is a flexible structure. The left connector 101 has two connecting holes 1011 to facilitate connection with the underwear body. A flexible steel plate 1012 is sewn into the inner through groove and the steel plate has a stepping groove 1013. The flexible steel plate 1012 enhances the structural strength of the first strap 1, and the stepping groove 1013 provides a positioning basis for multi-level adjustment.

[0028] See Figures 1-2 A second strap 2 is provided on the right side of the first strap 1. The second strap 2 is a flexible structure, and a connector 101 is also fixedly connected to the right side of the second strap 2.

[0029] A flexible second strap 2 is provided on the right side of the first strap 1, and a connector 101 is also provided on its right side, so that the back buckle assembly can be connected to the left and right back straps of the underwear respectively, so as to achieve double-sided connection and fixation, and meet the basic installation requirements of the back buckle assembly.

[0030] See Figures 5-6 The second strap 2 is sewn to form an inlet groove 201, which matches the first strap 1, and a connecting strap 3 is fixedly connected to the side of the second strap 2 closest to the first strap 1.

[0031] The second strap 2 is sewn to form an inlet groove 201 that matches the first strap 1, and a connecting strap 3 is fixed near the side of the first strap 1. The inlet groove 201 facilitates the insertion of the first strap 1, and the connecting strap 3 provides an installation base for the subsequent limiting structure, so that the first strap 1 and the second strap 2 initially form an adjustable connection relationship.

[0032] See Figures 1-3 There are two connecting straps 3, which are fixedly connected to the upper and lower sides of the outer side of the second strap 2 in opposite directions.

[0033] The two connecting straps 3 are fixed to the upper and lower sides of the outer side of the second strap 2 in opposite directions. The symmetrically distributed connecting straps 3 enhance the structural stability of the back buckle assembly, ensure that the force is evenly distributed after the limit strap 301 and other components are installed, and improve the overall reliability.

[0034] See Figures 2-5 On the side of the two connecting straps 3 that is away from the second strap 2, a limiting strap 301 is also fixedly connected. The limiting strap 301 is a flexible structure.

[0035] The flexible limiting belt 301 is fixed on the side of the connecting belt 3 away from the second binding belt 2. The limiting belt 301 can guide the movement of the first binding belt 1, prevent the first binding belt 1 from shifting during the adjustment process, and ensure the accuracy and stability of the adjustment.

[0036] See Figures 1-2The limiting band 301 is used to guide the first binding band 1. A side plate assembly 3011 is fixedly connected to the side of the limiting band 301 near the second binding band 2. The side plate assembly 3011 is made of rubber.

[0037] The rubber side plate assembly 3011 is fixed near the second strap 2 by the limiting strap 301. The rubber side plate assembly 3011 has a certain elasticity, which can reduce rigid friction during rotation and improve the user experience while supporting the rotating shaft assembly 3012.

[0038] See Figures 3-6 There are two side plate assemblies 3011. The two side plate assemblies 3011 are fixedly connected in a straight line array to the left and right sides of the rear end face of the limiting belt 301. The inner side of the two side plate assemblies 3011 is also rotatably connected to the shaft assembly 3012. The outer side of the shaft assembly 3012 is fixedly connected to the spiral assembly 3013. The spiral assembly 3013 matches the stepping groove 1013 and is used to guide the first strap 1. The outer side of the shaft assembly 3012 is fixedly connected to the knob assembly 3014.

[0039] The rotating shaft assembly 3012 is rotatably connected to the inner side of the two side plate assemblies 3011. The spiral assembly 3013 and the knob assembly 3014, which match the stepping groove 1013, are fixed on the outer side of the rotating shaft assembly 3012. By rotating the knob assembly 3014, the spiral assembly 3013 is driven to rotate. The spiral assembly 3013 engages with the stepping groove 1013, realizing multi-level precise adjustment of the first strap 1. The structure is compact and the operation is convenient.

[0040] During operation, the first strap 1 is fixed to the left back strap of the bra by sewing through the two connecting holes 1011 of the left connector 101. The second strap 2 is connected to the right back strap of the bra in the same way through the right connector 101, forming the basic installation structure of the back buckle assembly. The right end of the first strap 1 is inserted into the guide groove 201 of the second strap 2. At this time, the flexible steel plate 1012 on the inner side of the first strap 1 and the connecting strip 3 of the second strap 2 are in the initial alignment state. The limiting strip 301 is fixed to the upper and lower sides of the second strap 2 through the connecting strip 3, and its inner side is in slight contact with the outer side of the first strap 1 to provide initial guiding constraint.

[0041] The user holds the knob assembly 3014 and rotates it clockwise. The knob assembly 3014 drives the rotating shaft assembly 3012 to rotate synchronously. The spiral assembly 3013 on the outside of the rotating shaft assembly 3012 then begins to rotate. The spiral teeth of the spiral assembly 3013 and the stepping groove 1013 of the flexible steel plate 1012 (a toothed groove structure distributed in a straight array) form a meshing transmission relationship: the spiral teeth advance along the tooth wall of the stepping groove 1013, generating a thrust along the axial direction of the first strap 1, forcing the first strap 1 to move inward to the inside of the second strap 2, thereby shortening the length of the strap.

[0042] If the strap length needs to be extended, rotate the knob assembly 3014 counterclockwise, and the spiral assembly 3013 will rotate in the opposite direction. The spiral teeth will disengage from the step groove 1013, and the user can manually pull the first strap 1 out of the guide groove 201 until the spiral assembly 3013 re-engages and locks with the step groove 1013 at the target position.

[0043] During adjustment, the flexible material (such as elastic webbing) of the limiting belt 301 always fits against both sides of the first binding belt 1, guiding it to move linearly along the central axis of the second binding belt 2, avoiding lateral offset or twisting. The rubber side plate assembly 3011 is fixed to the rear end face of the limiting belt 301, and the spiral assembly 3013 is supported by the bearing structure of the rotating shaft assembly 3012. Its elasticity can buffer the mechanical impact force during rotation, while reducing the rigid friction between the spiral assembly 3013 and the side plate assembly 3011, making the rotation operation smoother.

[0044] When the spiral assembly 3013 is fully engaged with the stepping groove 1013 of a certain position, the spiral teeth are embedded in the bottom of the groove, forming a mechanical lock. At this time, the strap maintains a fixed length due to the self-locking characteristic of the spiral drive. Even if it is pulled by external force, the spiral assembly 3013 will not rotate on its own, ensuring that the adjusted state is stable and reliable. The number of stepping grooves 1013 on the flexible steel plate 1012 is densely arranged according to design requirements (such as setting 1 position every 1 cm). Every time the spiral assembly 3013 rotates one revolution (360°), it advances one tooth pitch along the stepping groove 1013, corresponding to a change of one position in the strap length. Users can accurately select the required position by observing the number of rotations of the knob assembly 3014 or by directly feeling the tightness of the strap. Compared with the coarse adjustment of the traditional back buckle, it can achieve the effect of "fine adjustment and precise positioning of each tooth".

[0045] In summary, this device, by incorporating the spiral assembly 3013, can achieve a step-by-step tightening operation.

[0046] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A multi-position adjustable back buckle assembly, comprising a first strap (1), characterized in that: The first strap (1) is a flexible structure, and a connector (101) is fixedly connected to the left side of the first strap (1). The connector (101) has two connecting holes (1011) arranged in a straight line array inside. The connecting hole (1011) is used to connect with the underwear body, and a through groove is provided on the inner side of the first strap (1). A flexible steel plate (1012) is sewn inside the through groove, and stepping grooves (1013) are provided in a linear array inside the flexible steel plate (1012).

2. The multi-position adjustable back buckle assembly according to claim 1, characterized in that: A second strap (2) is provided on the right side of the first strap (1). The second strap (2) is a flexible structure, and a connector (101) is also fixedly connected to the right side of the second strap (2).

3. The multi-position adjustable back buckle assembly according to claim 2, characterized in that: The second strap (2) is sewn to form an inlet groove (201), which matches the first strap (1), and a connecting strap (3) is fixedly connected to the side of the second strap (2) closer to the first strap (1).

4. The multi-position adjustable back buckle assembly according to claim 3, characterized in that: The connecting strap (3) is provided in two places, and the two connecting straps (3) are fixedly connected to the upper and lower sides of the outer side of the second strap (2) in opposite directions.

5. A multi-position adjustable back buckle assembly according to claim 4, characterized in that: A limiting band (301) is also fixedly connected to the side of the two connecting bands (3) away from the second binding band (2), and the limiting band (301) is a flexible structure.

6. The multi-position adjustable back buckle assembly according to claim 5, characterized in that: The limiting band (301) is used to guide the first strap (1). A side plate assembly (3011) is fixedly connected to the side of the limiting band (301) near the second strap (2). The side plate assembly (3011) is made of rubber.

7. A multi-position adjustable back buckle assembly according to claim 6, characterized in that: The side plate assembly (3011) is provided in two places. The two side plate assemblies (3011) are fixedly connected in a straight line array to the left and right sides of the rear end face of the limiting belt (301). The inner side of the two side plate assemblies (3011) is also rotatably connected to the shaft assembly (3012). The outer side of the shaft assembly (3012) is fixedly connected to the spiral assembly (3013). The spiral assembly (3013) matches the stepping groove (1013) and is used to guide the first strap (1). The outer side of the shaft assembly (3012) is fixedly connected to the knob assembly (3014).

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