Buckle

Abstract

The buckle comprises a core rod piece and a sleeve piece which are arranged in a split mode, the core rod piece comprises a first guide conical part and a second guide conical part, an annular clamping groove is formed in the upper portion of the second guide conical part, and the diameter of the upper end face of the first guide conical part is smaller than the inner diameter of the annular clamping groove; the sleeve part comprises a distraction part and a fixing buckle, a channel allowing the core rod part to penetrate through is formed in the sleeve part, the fixing buckle is arranged at the bottom end of the distraction part, and when the core rod part penetrates through the sleeve part through the channel, the distraction part is stressed to expand outwards. The fixing buckle is inserted into the annular clamping groove to fix the core rod piece and the sleeve piece. According to the buckle provided by the invention, the diameter of the upper end face of the first guide conical part is set to be smaller than the inner diameter of the annular clamping groove, so that pre-connection is facilitated, the situation that the expanding piece of the buckle expands excessively due to pre-connection can be avoided, and subsequent normal use of the buckle can be ensured.

Description

Technical Field

[0001] The utility model relates to the field of assembly parts, and particularly to a buckle. Background Art

[0002] At the present stage, buckles are often used in the installation and fixation of multiple components. Their characteristics are: simple structure, convenient installation, light weight, and good economy. For example, expansion buckles are commonly used in the interior and exterior trim parts of automobiles.

[0003] The existing expansion buckles generally adopt thread limit or snap - limit push pins, and the buckle includes two parts arranged separately. For example, a utility model patent with the application number CN201720327142.8 provides a split - type plastic buckle, including a plastic screw and a plastic nut. The technical key points are: the plastic screw includes a screw flange and a screw body with a screw rotation groove arranged on the screw flange; the plastic nut includes a nut flange with a snap - fit groove for cooperating with the screw flange and an inner wall with nut threads, and a plurality of nut expansion feet arranged on the nut flange.

[0004] However, during the production and transportation of the buckle, in order to ensure that the buckles exist in pairs, a pre - connection operation should be performed on the buckles. For the buckle with thread limit, the screw part needs to be rotated into the nut, and the operation is relatively cumbersome; for the snap - limit buckle, the push pin needs to be pushed into the sleeve part, which may cause the sleeve part to expand too much under force during the pre - connection process, resulting in loose snap - fit or inability to snap - fit properly during subsequent use. Summary of the Utility Model

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0006] In view of this, in response to the problem that the pre - connection process of the buckle in this application may be cumbersome or damage the connection effectiveness of the buckle, a buckle that is convenient for pre - connection and can ensure normal subsequent use is provided. The buckle includes a core rod part and a sleeve part arranged separately:

[0007] The core rod part includes a first guiding cone part and a second guiding cone part. An annular groove is formed on the upper part of the second guiding cone part, and the diameter of the upper end surface of the first guiding cone part is smaller than the inner diameter of the annular groove.

[0008] The sleeve part includes a spreading part and a fixed buckle. A channel for the core rod part to penetrate is arranged inside the sleeve part. The fixed buckle is arranged at the bottom end of the spreading part. When the core rod part penetrates the sleeve part through the channel, the spreading part is forced to expand outwards, and the fixed buckle is inserted into the annular groove to fix the core rod part and the sleeve part.

[0009] In a feasible implementation manner, the core rod member further includes a stress-bearing disc and a framework. The framework is connected to the lower surface of the stress-bearing disc, and the upper surface of the stress-bearing disc is the top surface of the core rod member.

[0010] In a feasible implementation manner, a support disc is provided on the framework. The support disc is located between the stress-bearing disc and the second guiding cone portion, and the diameter of the support disc is equal to the diameter of the stress-bearing disc.

[0011] In a feasible implementation manner, a concave area for placing the support disc is provided inside the sleeve member.

[0012] In a feasible implementation manner, the framework is arranged in a cross shape.

[0013] In a feasible implementation manner, the expanding member of the sleeve member includes four expanding pieces arranged in a circle, and a fixing buckle is provided at the bottom end of each expanding piece.

[0014] In a feasible implementation manner, a gap is provided between each of the expanding pieces.

[0015] In a feasible implementation manner, the fixing buckle of the sleeve member includes a connecting portion and a fixing portion. The connecting portion is provided at the bottom of the expanding member and connects the expanding member and the fixing portion. The fixing portion is perpendicularly arranged with respect to the expanding member and faces the inside of the expanding member.

[0016] In a feasible implementation manner, the connecting portion of the fixing buckle is inclined.

[0017] In a feasible implementation manner, the fixing portion of the fixing buckle includes a concave portion, and the concave portion is provided at one end of the fixing portion facing the inside of the expanding member.

[0018] Compared with the prior art, the present application has at least the following beneficial effects:

[0019] In the embodiments provided by the present application, the buckle includes a core rod member and a sleeve member which are separately arranged. A fixed buckle is provided on the sleeve member, and a first guiding cone portion and a second guiding cone portion are provided on the core rod member. An annular groove is formed in the upper part of the second guiding cone portion, and the diameter of the upper end face of the first guiding cone portion is smaller than the inner diameter of the annular groove. The first guiding cone portion is used for pre-connection and angle adjustment, and the second guiding cone portion is used to guide the fixed buckle to move into the annular groove. During the pre-connection process of the buckle provided by the present application, pressure is applied to the core rod member to make it insert into the inside of the sleeve member from top to bottom through the channel provided inside the sleeve member, and the pressure application is stopped when the fixed buckle of the sleeve member is located between the first guiding cone portion and the second guiding cone portion of the core rod member. Thus, the sleeve member can be limited on the core rod member. And since the diameter of the upper end face of the first guiding cone portion is smaller than the inner diameter of the annular groove, it can ensure that the expanding member of the sleeve member will not expand outwards too much during the pre-connection process, resulting in inconvenient subsequent assembly or difficulty in assembling in place. During the process of multi-component assembly using the buckle provided by the present application, first install the sleeve member between the multi-components, then apply pressure to the core rod member to make it insert into the inside of the sleeve member from top to bottom through the channel provided inside the sleeve member, and stop applying pressure when the fixed buckle of the sleeve member inserts into the annular groove. At this time, the expanding member of the sleeve member is forced to expand outwards completely and the fixed buckle is engaged with the annular groove, realizing the fixed connection between the core rod member and the sleeve member, and thus completing the assembly between the multi-components. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0021] Figure 1 Schematic diagram of the fixed connection state of a buckle provided by a specific embodiment of the present application;

[0022] Figure 2 Schematic structural diagram of the core rod member of a buckle provided by a specific embodiment of the present application;

[0023] Figure 3 Schematic structural diagram of the sleeve member of a buckle provided by a specific embodiment of the present application;

[0024] Figure 4 Schematic structural diagram of the sleeve member of a buckle provided by a specific embodiment of the present application;

[0025] Figure 5Schematic structural diagram of a core rod member of a snap fastener provided for a specific embodiment of the present application;

[0026] Figure 6 Schematic structural diagram of a sleeve member of a snap fastener provided for a specific embodiment of the present application;

[0027] Figure 7 Schematic structural diagram of a core rod member of a snap fastener provided for a specific embodiment of the present application;

[0028] Figure 8 Cross-sectional view of a fixed connection state of a snap fastener provided for a specific embodiment of the present application.

[0029] Reference numerals:

[0030] Core rod member, 11 - First guiding cone portion, 12 - Second guiding cone portion, 121 - Annular card slot, 13 - Stress plate, 14 - Skeleton, 15 - Support plate;

[0031] Sleeve member, 21 - Expanding member, 211 - Expansion piece, 22 - Fixed snap fastener, 221 - Connection portion, 222 - Fixed portion, 2221 - Concave portion, 23 - Concave area. Detailed description of the specific embodiment

[0032] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following detailed description of the specific embodiments of the present utility model will be given in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0033] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present 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 thus should not be construed as a limitation of the present utility model.

[0034] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0035] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0037] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manner. Specific embodiments:

[0039] Please refer to Figures 1 - 4As shown in the figure, this specific embodiment provides a snap fastener, which includes a core rod member 1 and a sleeve member 2 that are separately arranged. The core rod member 1 includes a first guiding cone portion 11 and a second guiding cone portion 12. An annular groove 121 is formed in the upper part of the second guiding cone portion 12, and the diameter of the upper end surface of the first guiding cone portion 11 is smaller than the inner diameter of the annular groove 121. The sleeve member 2 includes an expanding member 21 and a fixed snap fastener 22. A channel for the core rod member 1 to penetrate is provided inside the sleeve member 2. The fixed snap fastener 22 is arranged at the bottom end of the expanding member 21. When the core rod member 1 penetrates the sleeve member 2 through the channel, the expanding member 21 is forced to expand outwards, and the fixed snap fastener 22 is inserted into the annular groove 121 to fix the core rod member 1 and the sleeve member 2.

[0040] In this embodiment, the snap fastener includes a core rod member 1 and a sleeve member 2 that are separately arranged. A fixed snap fastener 22 is arranged on the sleeve member 2, and a first guiding cone portion 11 and a second guiding cone portion 12 are arranged on the core rod member 1. An annular groove 121 is formed in the upper part of the second guiding cone portion 12, and the diameter of the upper end surface of the first guiding cone portion 11 is smaller than the inner diameter of the annular groove 121. The first guiding cone portion 11 is used for pre-connection and angle adjustment, and the second guiding cone portion 12 is used to guide the fixed snap fastener 22 to move into the annular groove 121. During the pre-connection process of the snap fastener provided in this application, pressure is applied to the core rod member 1 to make it insert into the sleeve member 2 from top to bottom through the channel provided inside the sleeve member 2, and the pressure application stops when the fixed snap fastener 22 of the sleeve member 2 is located between the first guiding cone portion 11 and the second guiding cone portion 12 of the core rod member 1. Thus, the sleeve member 2 can be limited on the core rod member 1. And because the diameter of the upper end surface of the first guiding cone portion 11 is smaller than the inner diameter of the annular groove 121, it can be ensured that the expanding member 21 of the sleeve member 2 will not expand outwards too much during the pre-connection process, resulting in inconvenient subsequent assembly or difficulty in assembling in place. During the process of assembling multiple components using the snap fastener provided in this application, first install the sleeve member 2 between the multiple components, then apply pressure to the core rod member 1 to make it insert into the sleeve member 2 from top to bottom through the channel provided inside the sleeve member 2, and the pressure application stops when the fixed snap fastener 22 of the sleeve member 2 is inserted into the annular groove 121. At this time, the expanding member 21 of the sleeve member 2 is forced to expand outwards completely and the fixed snap fastener 22 is engaged with the annular groove 121, realizing the fixed connection between the core rod member 1 and the sleeve member 2, and thus completing the assembly between the multiple components.

[0041] Preferably, in this embodiment, please refer to again Figure 4As shown, the fixing buckle 22 of the sleeve member 2 includes a connecting portion 221 and a fixing portion 222. The connecting portion 221 is disposed at the bottom of the expanding member 21, connecting the expanding member 21 and the fixing portion 222. The fixing portion 222 is perpendicularly disposed with respect to the expanding member 21 and faces the inside of the expanding member 21.

[0042] Furthermore, the connecting portion 221 of the fixing buckle 22 is inclined.

[0043] Still further, the fixing portion 222 of the fixing buckle 22 includes a concave portion 2221, and the concave portion 2221 is disposed at one end of the fixing portion 222 facing the inside of the expanding member 21.

[0044] In this embodiment, by providing the concave portion 2221 at one end of the fixing portion 222 of the fixing buckle 22 facing the inside of the expanding member 21, the process of inserting the fixing buckle 22 into the annular card slot 121 can be made smoother.

[0045] In some other specific embodiments, please refer to Figure 5 As shown, the core rod member 1 further includes a force-bearing disc 13 and a framework 14. The framework 14 is connected to the lower surface of the force-bearing disc 13, and the upper surface of the force-bearing disc 13 is the top surface of the core rod member 1.

[0046] In this embodiment, applying pressure to the core rod member 1 means applying pressure to its force-bearing disc 13. For example, a finger can be placed on the force-bearing disc 13 and force can be exerted to push the force-bearing disc 13 to drive the core rod member 1 to move into the sleeve member 2.

[0047] Preferably, please refer to Figure 5 As shown, a supporting disc 15 can also be provided on the framework 14 of the core rod member 1. The supporting disc 15 is located between the force-bearing disc 13 and the second guiding cone portion 12, and the diameter of the supporting disc 15 is equal to the diameter of the force-bearing disc 13.

[0048] In this embodiment, the provision of the supporting disc 15 can further ensure that the expanding member 21 of the sleeve member 2 is in a fully expanded state, that is, further ensure its connection stability, making the assembly between multiple components completed with this buckle more firm.

[0049] As a preferred embodiment, please refer to Figure 6 and Figure 8 As shown, a concave area 23 for placing the supporting disc 15 is correspondingly provided inside the sleeve member 2.

[0050] In this embodiment, the provision of the concave area 23 can ensure that the sleeve member 2 remains flat when the core rod member 1 is fully inserted into it, that is, the force is evenly distributed, thereby ensuring the service life of the buckle while enhancing the connection stability.

[0051] Please refer to Figure 5 and Figure 7 As shown, in this embodiment, the framework 14 is arranged in a cross shape. Arranging the framework 14 in a cross shape can reduce the consumption and weight of the core rod member 1 while ensuring the expansion degree of the expansion member 21.

[0052] Preferably, please refer to again Figure 6 As shown, the expansion member 21 of the sleeve member 2 includes four expansion pieces 211 arranged in a circle, and a fixed buckle 22 is provided at the bottom end of each expansion piece 211; there is a gap between each of the expansion pieces 211. The gap corresponds to the cross-shaped rib of the framework 14, and can prevent the sleeve member 2 from rotating when installed in place, protecting the reliability of the connection.

[0053] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0054] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A buckle, comprising a core rod member and a sleeve member that are separately provided, characterized in that the core rod member includes a first guiding cone portion and a second guiding cone portion, an annular card slot is formed in the upper part of the second guiding cone portion, and the diameter of the upper end surface of the first guiding cone portion is smaller than the inner diameter of the annular card slot; the sleeve member includes a spreading member and a fixing buckle, a channel for the core rod member to penetrate is provided inside the sleeve member, the fixing buckle is arranged at the bottom end of the spreading member, when the core rod member penetrates the sleeve member through the channel, the spreading member is forced to expand outwards, and the fixing buckle is inserted into the annular card slot to fix the core rod member and the sleeve member.

2. The buckle according to claim 1, characterized in that, The core rod member further includes a stress disk and a framework, the framework is connected to the lower surface of the stress disk, and the upper surface of the stress disk is the top surface of the core rod member.

3. The buckle according to claim 2, characterized in that, A support disk is arranged on the framework, the support disk is located between the stress disk and the second guiding cone portion, and the diameter of the support disk is equal to the diameter of the stress disk.

4. The buckle according to claim 3, characterized in that, A concave area for placing the support disk is provided inside the sleeve member.

5. The buckle according to claim 2, characterized in that, The framework is arranged in a cross shape.

6. The buckle according to claim 5, characterized in that The spreading member of the sleeve member includes four expansion pieces arranged in a circle, and a fixing buckle is arranged at the bottom end of each expansion piece.

7. The buckle according to claim 6, characterized in that, A gap is provided between each of the expansion pieces.

8. The buckle according to any one of claims 1 to 7, characterized in that, The fixing buckle of the sleeve member includes a connecting portion and a fixing portion, the connecting portion is arranged at the bottom of the spreading member and connects the spreading member and the fixing portion, and the fixing portion is vertically arranged with respect to the spreading member and faces the inside of the spreading member.

9. The buckle according to claim 8, wherein The connecting portion of the fixing buckle is inclined.

10. The buckle according to claim 8, characterized in that, The fixing portion of the fixing buckle includes a concave portion, and the concave portion is arranged at one end of the fixing portion facing the inside of the spreading member.

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