Buckle, belt adjustment structure, and harness

Abstract

The application discloses a belt buckle, a belt adjusting structure and a back strap. The belt buckle comprises a buckle body, a through hole and a sliding groove. The through hole penetrates the upper and lower surfaces of the buckle body, and the sliding groove has an opening at the side wall of the buckle body and a bottom wall opposite to the opening. The sliding groove is in communication with the through hole. A push rod is inserted into the sliding groove through the opening and is in sliding cooperation with the sliding groove. An elastic member is arranged between the bottom wall and the push rod and is used for applying an elastic force to the push rod to move towards the opening. When the push rod is subjected to a pressure to move towards the bottom wall, the through hole can be divided into a first through hole part and a second through hole part. The first through hole part and the second through hole part are used for the first belt connected with the buckle body to pass through. When the pressure is released, the push rod is suitable for pressing the first belt between the buckle body and the push rod under the action of the elastic member.

Description

TECHNICAL FIELD

[0001] The present application relates to a buckle, a strap adjusting structure and a harness. BACKGROUND

[0002] In the field of baby products, straps are often used to releasably connect two components together. In order to easily connect or open the straps on the two components, the straps are usually used in conjunction with a buckle. For example, in one application, a male buckle and a female buckle can be respectively installed on two straps, and the two straps are connected by detachable engagement of the male buckle and the female buckle. Alternatively, in another application, an anti-slip buckle can be fixed on one strap, and the free end of the other strap is wound around the anti-slip buckle, thereby easily connecting the two straps.

[0003] In order to facilitate the adjustment of the length of the strap and to ensure that the strap does not easily slip relative to the buckle during use, two slots for engaging the strap are usually formed on the buckle, and the two slots are separated by a rod-shaped portion. The free end of the strap is arranged in the two slots and wound around the rod-shaped portion. When the strap is under tension, it is in contact with the walls of the slots and generates a large friction force, which effectively prevents the strap from slipping relative to the buckle.

[0004] Since the strap does not remain in a tensioned state at all times during normal use, the strap will still slip relative to the buckle after a period of use. If the amount of slip of the strap relative to the buckle is too large, it will cause dissatisfaction among consumers and lead to complaints about product quality. For example, according to European quality testing standards, the standard for a qualified buckle equipped with a strap and a harness is that, under simulated conditions in which a baby is seated in the harness and the harness is worn on the user, the harness is tested for 100 cycles, and the amount of slip of the strap cannot exceed 2 cm. In order to improve the slip of the strap relative to the buckle, some complex buckles have been proposed in the prior art. These buckles are not only difficult to manufacture, but also complex to operate when engaging with the strap, which is not conducive to widespread use. SUMMARY

[0005] The present application aims to provide a buckle that can effectively improve the slip of the strap relative to the buckle and has a simple structure. The present application also provides a strap adjusting structure and a harness.

[0006] In one aspect, the present application provides a belt buckle, comprising: a buckle body comprising a through hole and a sliding slot; the through hole penetrates the upper and lower surfaces of the buckle body, and the sliding slot has an opening at the side wall of the buckle body and a bottom wall opposite to the opening, and the sliding slot penetrates the through hole; a push rod inserted into the sliding slot through the opening and in sliding fit with the sliding slot; a resilient member arranged between the bottom wall and the push rod for applying an elastic force to the push rod to move towards the opening; wherein when the push rod is subjected to a pressure to move towards the bottom wall, the through hole can be divided into a first through hole part and a second through hole part, and the first through hole part and the second through hole part are used for the first strap connected with the buckle body to pass through; when the pressure is released, the push rod is adapted to press the first strap between the buckle body and the push rod under the action of the resilient member.

[0007] The above belt buckle provided by the present application, when connected with the first strap, applies pressure to the push rod to move the push rod towards the bottom wall of the sliding slot, and the part of the push rod located in the through hole can divide the through hole of the buckle body into a first through hole part and a second through hole part, so that the first strap can pass through the first through hole part and the second through hole part to be wound on the push rod. When the pressure of the push rod is released, the resilient member drives the push rod to move towards the opening of the sliding slot, and finally reliably presses the first strap between the buckle body and the push rod, so as to effectively prevent the first strap from sliding relative to the belt buckle. The belt buckle provided by the present application not only has simple structure and low cost, but also is easy to operate.

[0008] Further, the push rod comprises sliding block parts at both ends and a locking part in the middle, the sliding block parts are in contact with the groove walls of the sliding slot, and the locking part is adapted to be located in the through hole; the locking part comprises a front end face and a rear end face, and an inclined side face connected between the front end face and the rear end face; wherein the front end face faces the bottom wall, the rear end face faces the opening, the height of the front end face is less than the height of the sliding slot, and the height of the rear end face is greater than the height of the sliding slot.

[0009] Further, the push rod is provided with a slip stop part protruding towards the opening and adapted to abut against the first strap.

[0010] Further, the slip stop part is a protruding strip, and the height of the protruding strip is less than the height of the sliding slot.

[0011] Further, the push rod is made of an elastic material.

[0012] Further, the push rod is integrally formed with or attached to the resilient member.

[0013] Further, the elastic member comprises at least one elastic arm extending from at least one end of the push rod.

[0014] Further, the at least one elastic arm comprises two arc-shaped arms respectively extending from two ends of the push rod; or, the at least one elastic arm comprises two bent arms respectively extending from two ends of the push rod, each of the bent arms comprises a slanted arm segment at the end; or, the at least one elastic arm comprises two wave-shaped arms respectively extending from two ends of the push rod.

[0015] Further, the elastic member comprises two springs respectively arranged at two ends of the push rod, and the sliding slot is provided with a structure for guiding the springs.

[0016] Further, the belt buckle further comprises a pressing portion connected with the push rod and capable of extending outside the opening.

[0017] Further, the pressing portion and the push rod form a closed loop for the first strap to pass through.

[0018] Further, the buckle body further comprises a connecting hole penetrating through upper and lower surfaces of the buckle body, and the connecting hole is separate from the through hole, and the buckle body is adapted to be connected with a second strap through the connecting hole.

[0019] Further, the buckle body is provided with a positioning tongue extending outwardly from the buckle body; the positioning tongue is adapted to be located between and relatively fixed with two opposite portions of the second strap.

[0020] Further, the positioning tongue is configured to be sewn or riveted with the two opposite portions; or, the two opposite portions are formed with a recess for accommodating the positioning tongue.

[0021] Further, the buckle body is provided with a positioning tongue extending outwardly from the buckle body.

[0022] In another aspect, the present application provides a belt buckle comprising a buckle body for connecting with a first strap, the buckle body being provided with a positioning tongue extending outwardly from the buckle body.

[0023] Further, the buckle body comprises a connecting hole penetrating through upper and lower surfaces of the buckle body and for connecting with a second strap; the positioning tongue is adapted to be located between and relatively fixed with two opposite portions of the second strap.

[0024] The buckle provided by the present application has the positioning tongue arranged on the buckle body, which can keep the second strap fixed relative to the buckle body and avoid the relative position of the buckle body and the second strap from changing undesirably.

[0025] In another aspect, the present application provides a belt adjusting structure, which comprises a first strap, a second strap and the buckle as described above, wherein the first strap is arranged around the push rod in the through hole and is pressed between the buckle body and the push rod, and the second strap is connected with the buckle body.

[0026] In another aspect, the present application provides a harness, which is provided with the buckle as described above or the belt adjusting structure as described above. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 Fig. 1 schematically shows a perspective view of the buckle provided by the first embodiment of the present application;

[0028] Figure 2 Fig. 2 schematically shows an exploded view of the buckle provided by the first embodiment of the present application;

[0029] Figure 3 Fig. 3 schematically shows a perspective view of the buckle provided by the first embodiment of the present application, in which the push rod moves a certain distance towards the bottom wall of the sliding groove so that the elastic member is compressed;

[0030] Figure 4 Fig. 4 schematically shows a sectional view of the buckle provided by the first embodiment of the present application;

[0031] Figure 5 Fig. 5 schematically shows a perspective view of the buckle provided by the second embodiment of the present application;

[0032] Figure 6 Fig. 6 schematically shows an exploded view of the buckle provided by the second embodiment of the present application;

[0033] Figure 7 Fig. 7 schematically shows a perspective view of the buckle provided by the third embodiment of the present application;

[0034] Figure 8 Fig. 8 schematically shows an exploded view of the buckle provided by the third embodiment of the present application;

[0035] Figure 9 Fig. 9 schematically shows an exploded view of the buckle provided by the fourth embodiment of the present application;

[0036] Figure 10 Fig. 10 schematically shows an exploded view of the buckle provided by the fifth embodiment of the present application;

[0037] Figure 11 Fig. 7 schematically shows a perspective view of a belt buckle provided according to a sixth embodiment of the present application;

[0038] Figure 12 Fig. 8 schematically shows a perspective view of a harness provided according to a seventh embodiment of the present application; and

[0039] Figure 13 Fig. 9 schematically shows an adjustment view of a first strap in the harness provided according to the seventh embodiment of the present application. DETAILED DESCRIPTION

[0040] Referring to Figures 1 to 4 , a belt buckle 100 and a belt adjustment structure 200 provided with the belt buckle 100 are shown according to a first embodiment of the present application. As shown, the belt buckle 100 can include a buckle body 1, a push rod 2 and an elastic member 3, and the belt adjustment structure 200 includes the belt buckle 100 and a first strap 91 and a second strap 92.

[0041] Referring to Figure 1 and Figure 4 , in the embodiment, the buckle body 1 can include an upper surface 101, a lower surface 102 and a side surface 103 connected between the upper surface 101 and the lower surface 102. The upper surface 101 and the lower surface 102 are generally rectangular in shape, and four side surfaces 103 are formed around the upper surface 101 and the lower surface 102.

[0042] Referring to Figure 1 , Figure 2 and Figure 4 , the buckle body 1 can further include a through hole 10 and a sliding groove 15. The through hole 10 penetrates the upper surface 101 and the lower surface 102, and the sliding groove 15 is, for example, perpendicular to the through hole 10. The sliding groove 15 has an opening 150 and a bottom wall 151. The opening 150 is located at the side wall 103 of the buckle body 1, and the bottom wall 151 is opposite to the opening 150. The sliding groove 15 and the through hole 10 are in communication with each other. In some embodiments, the edge position of the buckle body 1 includes a rod-shaped portion 19, which defines a part of the hole wall of the through hole 10, and the opening 150 of the sliding groove 15 is, for example, formed in the rod-shaped portion 19.

[0043] Referring to Figure 4In this embodiment, the buckle 100 is releasably connected with the first strap 91 and remains connected with the second strap 92, and the buckle 100 is mounted on any suitable article via the second strap 92. More specifically, the through hole 10 is used for the first strap 91 to pass through, and the buckle body 1 is provided with a connecting hole 16 for connecting with the second strap 92, for example, and the first strap 91 and the second strap 92 can be a braid, for example. The connection between the through hole 10 and the first strap 91 will be described in detail below. The connecting hole 16 is a relatively long rectangular hole, for example, and penetrates the upper surface 101 and the lower surface 102 of the buckle body 1, and the connecting hole 16 and the through hole 10 are separated by a rod-shaped portion 17 located therebetween, for example, which is generally parallel to the rod-shaped portion 19, and the bottom wall 151 of the sliding groove 15 is provided in the rod-shaped portion 17, for example. The second strap 91 is connected with the connecting hole 16. More specifically, the buckle body 1 includes a rod-shaped portion 18 located at the edge of the buckle body 1 and used to define a portion of the hole wall of the connecting hole 16, for example, which is generally parallel to the rod-shaped portion 17, and the second strap 92 has a loop structure that is sleeved on the rod-shaped portion 18, and the loop structure is sewn together by sewing thread 920, for example, so that the buckle body 1 and the second strap 92 remain connected without slipping relative to the second strap 92.

[0044] Referring to Figure 1 and Figure 2 , the push rod 2 is adapted to be inserted into the sliding groove 15 through the opening 150 in the direction indicated by the arrow P, and the push rod 2 is in sliding fit with the sliding groove 15. The elastic member 3 can be arranged between the bottom wall 151 and the push rod 2 in any suitable manner and can have any suitable structure, as long as it can apply an elastic force to the push rod 2 to move towards the opening 150 and does not affect the installation of the first strap 91.

[0045] The connection process of the first strap 91 and the buckle body 1 will be described below in conjunction with Figure 3 and Figure 4 . First, a pressure F1 in the direction indicated by the arrow P is applied to the push rod 2, and the push rod 2 will compress the elastic member 3 and move in the direction of the bottom wall 151, and when it moves into the through hole 10, the portion of the push rod 2 located in the through hole 10 divides the through hole 10 into a first through hole portion 11 and a second through hole portion 12. Next, the free end of the first strap 91 is inserted into the second through hole portion 12, for example, and then passes out of the first through hole portion 11 after being arranged around the push rod 2. Then, the pressure F1 applied to the push rod 2 is released, and the elastic restoring force F2 of the elastic member 3 will drive the push rod 2 to move towards the opening 150 until the first strap 91 is pressed between the push rod 2 and the rod-shaped portion 19 of the buckle body 1 (at this time the area of the first through hole portion 11 is close to zero), thereby locking the position of the first strap 91 relative to the buckle 100 and effectively preventing the first strap 91 from slipping relative to the buckle 100.

[0046] The operation of adjusting the length of the first strap 91 by the buckle 100 provided by the embodiment of the present application is also easy to implement. Specifically, the pressure F1 is applied to the push rod 2 to move the push rod 2 in the direction of the bottom wall 151, thereby increasing the area of the first through hole part 11, and then the first strap 91 can be easily pulled to adjust the position of the first strap 91, and then the pressure of the push rod 2 is released, and the elastic member 3 can push the push rod 2 to the rod-shaped part 19, and the first strap 91 is pressed and held between the push rod 2 and the rod-shaped part 19, and the position of the first strap 91 relative to the buckle 100 is locked again.

[0047] Referring to Figure 2 and Figure 4 , the push rod 2 in the embodiment can include slider parts 201 and 202 at both ends and a locking part 203 between the slider parts 201 and 202. Among them, the slider parts 201 and 202 are in contact with the groove walls of the sliding groove 15, and the locking part 203 is adapted to be located in the through hole 10. In some embodiments, the locking part 203 can include a front end face 21, a rear end face 22 and two inclined side faces 23, the front end face 21 faces the bottom wall 151, the rear end face 22 faces the opening 150, and the two inclined side faces 23 are connected between the front end face 21 and the rear end face 22, so that the cross-sectional shape of the locking part 203 is generally trapezoidal. Figure 4 As can be seen from Figure 4 , the height H1 of the front end face 21 is less than the height H3 of the sliding groove 15, and the height H2 of the rear end face 22 is greater than the height H3 of the sliding groove 15. When the push rod 2 is inserted into the opening 150, the front end of the locking part 203 can easily move into the sliding groove 15, and the rear end of the locking part 203 will be deformed due to extrusion, and when the locking part 203 enters the through hole 10, the rear end of the locking part 203 restores the shape and abuts against the rod-shaped part 19 under the action of the elastic member 3. It can be understood that the push rod 2 of this configuration can easily enter the through hole 10 through the opening 150, and after the push rod 2 is located in the through hole 10, even if it is not connected with the first strap 91, the probability of easily sliding out of the sliding groove 15 will be reduced under the limiting action of the locking part 203.

[0048] Referring to Figures 1 to 4 , the push rod 2 can also be provided with a stopper 221 protruding towards the opening 150 and adapted to abut against the first strap 91 to increase the frictional resistance of the first strap 91 when locked. In the embodiment, the stopper 221 can be a protruding strip formed on the rear end face 22, the protruding strip extends along the length direction of the push rod 2 and is generally located in the middle of the rear end face 22, which is convenient for manufacturing. As can be seen from Figure 4It can also be seen that the height H4 of the convex strip can be less than the height H3 of the slide groove 15, so that the convex strip can extend into the interior of the rod-shaped portion 19, which is more favorable for preventing the first strap 91 from sliding relative to the buckle 100. In some embodiments not shown, the convex strip can also be provided with strip-shaped convex ridges or convex teeth for increasing friction. Preferably, the push rod 2 can be made of an elastic material with a large friction coefficient.

[0049] Referring again to Figure 2 and Figure 3 , the elastic member 3 and the push rod 2 can be integrally formed by, for example, injection molding. The elastic member 3 can include at least one elastic arm 31 extending from at least one end of the push rod 2, and the free end of the elastic arm 31 abuts against the bottom wall 151, so as to apply an elastic force to the push rod 2 to slide toward the opening 150, and firmly hold the first strap 91 between the push rod 2 and the rod-shaped portion 19. In the preferred embodiment of the elastic member 3 shown in the embodiment, the elastic arm 31 includes two bent arms 313 extending from two ends of the push rod 2, respectively, and each bent arm 313 includes a straight arm segment 3131 and an inclined arm segment 3132 at the end of the straight arm segment 3131, and the end of the inclined arm segment 3132 is used to abut against the bottom wall 151, and the first strap 91 is adapted to pass through the second through-hole portion 12 between the two bent arms 313. When the push rod 2 is subjected to a pressure F1 in the direction of the arrow P, the inclined arm segment 3132 can be easily deformed to allow the push rod 2 to slide toward the bottom wall 151, so that the area of the first through-hole portion 11 is increased to facilitate the first strap 91 to pass through the first through-hole portion 11 or adjust the position of the first strap 91.

[0050] To facilitate the application of the pressure F1 in the direction of the arrow P to the push rod 2, the buckle 100 can further include a pressing portion 26 connected with the push rod 2 and capable of extending outside the opening 150, and a user can easily move the push rod 2 toward the bottom wall 151 by pressing the pressing portion 26, for example, by hand, so as to expand the area of the first through-hole portion 11. The height (not shown in the figure) of the pressing portion 26 is, for example, less than the height H3 of the slide groove 15, so that the pressing portion 26 can extend into the slide groove 15, that is, a part of the slide groove 15 also constitutes the stroke of the pressing portion 26, which is favorable for the compactness of the overall structure of the buckle 100. In the embodiment, the pressing portion 26 and the push rod 2 form a closed ring, for example, for the first strap 91 to pass through the first through-hole portion 11. Of course, in other embodiments, the shape of the pressing portion 26 can also be various, for example, the pressing portion 26 and the push rod 2 do not form a closed ring. Preferably, the pressing portion 26 and the push rod 2 can be integrally formed by, for example, injection molding.

[0051] Referring again to Figures 1 to 4In the present embodiment, the buckle body 1 is provided with a positioning tongue 13 extending outwardly from the buckle body 1, which is adapted to be clamped between the two opposite portions 921 and 922 of the second strap 92 around the rod-shaped portion 18, and the positioning tongue 13 can be relatively fixed with the two opposite portions 921 and 922 to prevent the buckle body 1 from slipping relative to the second strap 92 in a direction parallel to the length direction of the push rod 2. For example, the positioning tongue 13 extends outwardly from the rod-shaped portion 18, the length L1 of the positioning tongue 13 is much smaller than the length L2 of the buckle body 1, and the height H5 of the positioning tongue 13 can be configured to be suitable for being sewn together with the two opposite portions 921 and 922 by the sewing thread 920, so that the positioning tongue 13 is relatively fixed with the second strap 92 to avoid the occurrence of an undesirable change in the relative position of the buckle body 1 and the second strap 92. For example, a typical undesirable change is that the buckle body 1 is rotated by 90° relative to the second strap 92. In some alternative embodiments, the relative fixation of the buckle body 1 and the second strap 92 can also be achieved by sewing the two opposite portions 921 and 922 to form a recess between the two opposite portions 921 and 922 for accommodating the positioning tongue 13. Alternatively, in some alternative embodiments, the positioning tongue 13 can be riveted together with the two opposite portions 921 and 922.

[0052] It should be noted that although the buckle 100 is exemplified by the anti-slip buckle for connecting the first strap 91 and the second strap 92 in the present embodiment, it can be understood that the type of the buckle 100 of the present embodiment is not limited to the above-mentioned example. For example, in some alternative embodiments, the buckle 100 can be a male buckle or a female buckle, and the buckle body 1 thereof can have a male connecting end or a female connecting end to detachably engage with a female connecting end or a male connecting end on another webbing, at which time the buckle body 1 can be adjustably connected with the first strap 91 only through the through hole 10, the push rod 2 and the elastic member 3, and does not need to be provided with the connecting hole 16 for connecting the second strap 92.

[0053] In addition, it should be noted that the embodiment in which the positioning tongue 13 is provided on the buckle body 1 without the connecting hole 16 also falls within the protection scope of the present application, for example, the positioning tongue 13 can be directly sewn or riveted on any suitable article to fix the buckle body 1 on the article. That is, the positioning and installation of the buckle body 1 on the article can not be assisted by the second strap 92.

[0054] In addition, the buckle 100 provided in the above-mentioned embodiments can be applied to baby products, such as a baby carrier 500 (see Figure 12 and Figure 13The buckle 100 can be used in baby products such as baby carriages, baby strollers, etc. It can be understood that the application range of the buckle 100 is not limited to baby products, and it can be applied to any product using a strap and a buckle to connect two components, such as backpacks, waist bags, etc.

[0055] Referring to Figs. 1 and 2, Figure 5 and Figure 6 , the structure of the buckle 100 according to the second embodiment of the present application is shown. The main difference between this embodiment and the first embodiment described above is that the push rod 2 is not provided with the pressing part 26. In the case of no conflict, the structure of each component and the connection relationship between them in this embodiment can refer to the description in the first embodiment described above, and the same or similar parts between the two will not be repeated here.

[0056] The buckle 100 of this embodiment can directly operate the push rod 2 in the through hole 10 to increase the area of the first through hole part 11, so as to facilitate the installation of the first strap 21 or adjust the relative position of the first strap 21 and the buckle 100. The structure of the buckle 100 provided in this embodiment is simpler, and the manufacturing cost of the buckle 100 can be further reduced.

[0057] Referring to Figs. 3 and 4, Figure 7 and Figure 8 , the structure of the buckle 100 according to the third embodiment of the present application is shown. The main difference between this embodiment and the first embodiment described above is the implementation of the elastic member 3. In the case of no conflict, the structure of each component and the connection relationship between them in this embodiment can refer to the description in the first embodiment described above, and the same or similar parts between the two will not be repeated here.

[0058] The elastic member 3 in this embodiment includes two elastic arms 31 extending from both ends of the push rod 2, and the two elastic arms 31 are respectively wave-shaped arms 314. The first strap 91 is adapted to pass through the second through hole part 12 between the two wave-shaped arms 314.

[0059] Figure 9 The structure of the buckle 100 according to the fourth embodiment of the present application is shown. The main difference between this embodiment and the first embodiment described above is the implementation of the elastic member 3. In the case of no conflict, the structure of each component and the connection relationship between them in this embodiment can refer to the description in the first embodiment described above, and the same or similar parts between the two will not be repeated here.

[0060] The elastic member 3 in this embodiment includes two elastic arms 31 extending from both ends of the push rod 2, and the two elastic arms 31 are respectively arc-shaped arms 311. The first strap 91 is adapted to pass through the second through hole part 12 between the two arc-shaped arms 311.

[0061] In addition, in an embodiment not shown, the elastic member 3 can include an arc-shaped arm extending from one end of the push rod 2, the free end of the arc-shaped arm being close to the other end of the push rod 2, and the gap between the arc-shaped arm and the other end of the push rod 2 providing the elastic deformation space for the elastic member 3.

[0062] Figure 10 The structure of the belt buckle 100 according to the fifth embodiment of the present application is shown. The main difference between the present embodiment and the above-mentioned first embodiment is the implementation of the elastic member 3. In the case of no conflict, the structure of each component and the connection relationship between them in the present embodiment can refer to the description in the above-mentioned first embodiment, and the same or similar parts between the two will not be described here.

[0063] The elastic member 3 in the present embodiment is separated from the push rod 2. More specifically, the elastic member 3 includes, for example, two springs 32, which can be arranged at both ends of the push rod 2 by any suitable means, clamped between the push rod 2 and the bottom wall 151 of the sliding groove 15, and the first strap 91 is adapted to pass through the second through-hole part 12 between the two springs 32.

[0064] In order to make the extension direction of the spring 32 consistent with the sliding direction of the push rod 2, so as to ensure that the spring 32 always exerts an elastic force on the push rod 2, in some embodiments, a structure for positioning the spring 32 can be provided in the sliding groove 15. For example, in some embodiments, a first positioning column 204 can be provided at each end of the push rod 2, and a second positioning column (not shown in the figure) can also be provided on the bottom wall 151 accordingly, and each spring 32 is sleeved on the corresponding first positioning column 204 and second positioning column.

[0065] In addition, in an embodiment not shown, the spring 32 can be attached to the push rod 2 by any suitable means, for example. For example, a blind hole for accommodating the spring 32 can be provided at the end of the push rod 2.

[0066] Figure 11 The structure of the belt buckle 100 according to the sixth embodiment of the present application is shown. The belt buckle of the present embodiment includes a buckle body 1, the middle part of which is divided into a first through-hole part 101, a second through-hole part 102 and a connecting hole 16 passing through the upper and lower surfaces of the buckle body 1 by substantially parallel rod-shaped parts 14 and 17. Among them, the first strap 91 is adapted to pass through the second through-hole part 102 and the first through-hole part 101 in turn and be wound around the rod-shaped part 14, the second strap 92 is adapted to pass through the connecting hole 16 and be wound around the rod-shaped part 18, and the rod-shaped part 18 is used to define a part of the hole wall of the connecting hole 16 and is substantially parallel to the rod-shaped part 17.

[0067] With reference to the description in the foregoing first embodiment, the buckle body 1 can also be provided with a positioning tongue 13 extending outwardly from the rod-shaped portion 18 of the buckle body 1, the positioning tongue 13 being capable of being kept relatively fixed with the opposite two portions 921 and 922 of the second strap 92 to prevent the buckle body 1 from slipping relative to the second strap 92 in a direction parallel to the length direction of the push rod 2. In addition, the embodiment in which the positioning tongue 13 is provided on the buckle body 1 without the connecting hole 16 also falls within the protection scope of the present application, for example, the positioning tongue 13 can be directly sewn or riveted on any suitable article to fix the buckle body 1 on the article. That is, the positioning and installation of the buckle body 1 on the article can not be assisted by the second strap 92.

[0068] The embodiment of the present application also provides a harness 500, which facilitates parents to take infants and young children out, and the harness 500 can be provided with the buckle 100 described in any of the foregoing embodiments or the strap adjusting structure 200 described in any of the foregoing embodiments.

[0069] Referring to Figure 12 and Figure 13 , a harness 500 provided according to a seventh embodiment of the present application is shown, the harness 500 being hung on a prosthesis 600, and a buckle 100 being installed on an upper shoulder strap 51 of the harness 500. More specifically, a buckle body 1 of the buckle 100 is fixed to the upper shoulder strap 51 of the harness 500 through a second strap 92, and a positioning tongue 13 extending outwardly from the buckle body 1 is sewn on the second strap 92. A first strap 91 is releasably connected with the buckle body 1 as a lower shoulder strap, and the first strap 91 and the upper shoulder strap 51 enclose a shoulder strap. By manually adjusting the position of a push rod 2, the relative position of the first strap 91 and the buckle 100 can be easily adjusted to realize the tightness adjustment of the shoulder strap. The structure of the buckle 100 and the connection relationship between the buckle 100 and the first strap 91 and the second strap 92 can refer to the foregoing embodiments, and will not be described herein again.

[0070] The technical features of the foregoing embodiments can be combined in any manner. For the sake of brevity, all possible combinations of the technical features in the foregoing embodiments are not described herein, however, as long as the combinations of the technical features do not contradict each other, they shall be deemed to fall within the scope of the present application.

[0071] The foregoing embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, however, it shall not be understood as a limitation on the patent scope of the present application. It shall be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. A buckle, characterized in that, include: The fastener body includes a through hole and a sliding groove; the through hole penetrates the upper and lower surfaces of the fastener body, and the sliding groove has an opening located at the side wall of the fastener body and a bottom wall opposite to the opening, and the sliding groove communicates with the through hole; A push rod is inserted into the slide groove through the opening and slides in cooperation with the slide groove; the push rod is provided with an anti-slip part that protrudes toward the opening and is adapted to abut against the first strip; the anti-slip part is a convex strip that extends along the length direction of the push rod, and the convex strip is also provided with strip-shaped ribs or teeth. An elastic element, disposed between the bottom wall and the push rod, is used to apply an elastic force to the push rod to move toward the opening; When the push rod is subjected to pressure moving toward the bottom wall, it can divide the through hole into a first through hole portion and a second through hole portion, which are used for the first strip connected to the fastener body to pass through; when the pressure is released, the push rod is adapted to press the first strip between the fastener body and the push rod under the action of the elastic member.

2. The buckle according to claim 1, characterized in that, The push rod includes slider portions at both ends and a locking portion in the middle. The slider portions contact the groove wall of the slide groove, and the locking portion is adapted to be located in the through hole. The locking part includes a front end face and a rear end face, as well as an inclined side face connected between the front end face and the rear end face; The front end face faces the bottom wall, the rear end face faces the opening, the height of the front end face is less than the height of the groove, and the height of the rear end face is greater than the height of the groove.

3. The buckle according to claim 1 or 2, characterized in that, The height of the protrusion is less than the height of the groove.

4. The buckle according to claim 3, characterized in that, The push rod is made of an elastic material.

5. The buckle according to claim 1 or 2, characterized in that, The push rod is integrally formed with or attached to the elastic element.

6. The buckle according to claim 5, characterized in that, The elastic element includes at least one elastic arm extending from at least one end of the push rod.

7. The buckle according to claim 6, characterized in that, The at least one elastic arm includes two arc-shaped arms extending from both ends of the push rod, respectively; Alternatively, the at least one elastic arm includes two bent arms extending from both ends of the push rod, each bent arm including a slanted arm segment at its end; Alternatively, the at least one elastic arm may comprise two wavy arms extending from both ends of the push rod.

8. The buckle according to claim 5, characterized in that, The elastic element includes two springs, which are respectively arranged at both ends of the push rod.

9. The buckle according to claim 1 or 2, characterized in that, It also includes a pressing part that is connected to the push rod and can extend to the outside of the opening.

10. The buckle according to claim 9, characterized in that, The pressing part and the push rod form a closed ring for the first strip to pass through.

11. The buckle according to claim 1 or 2, characterized in that, The fastener body also includes a connecting hole that penetrates the upper and lower surfaces of the fastener body and is separate from the through hole. The fastener body is adapted to be connected to the second strip through the connecting hole.

12. The buckle according to claim 11, characterized in that, The fastener body is provided with a positioning tongue, which extends outward from the fastener body; the positioning tongue is adapted to be located between two opposite parts of the second strip and can remain relatively fixed with the two opposite parts.

13. The buckle according to claim 12, characterized in that, The height of the positioning tongue is configured to be suitable for sewing or riveting together with the two opposing parts; Alternatively, a recess for accommodating the positioning tongue is formed between the two opposing parts.

14. The buckle according to claim 1, characterized in that, The fastener body is provided with a positioning tongue, which extends outward from the fastener body.

15. A type of adjustable structure, characterized in that, The device includes a first strip, a second strip, and a buckle according to any one of claims 1 to 14, wherein the first strip is wound around the push rod in the through hole and is pressed between the buckle body and the push rod, and the second strip is connected to the buckle body.

16. A shoulder strap, characterized in that, The shoulder strap is provided with a buckle as described in any one of claims 1 to 14 or a strap adjustment structure as described in claim 15.

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