Buckle and watch with adjustable strap tension

Abstract

The present invention provides a watch buckle and a watch with adjustable strap tension, the watch buckle with adjustable strap tension comprises a buckle base and a face cover pivotally connected to the buckle base, the watch buckle with adjustable strap tension also comprises a driving assembly, a locking assembly and a rack member, the rack member is provided with a first sawtooth; the locking assembly is installed in the face cover, the locking assembly is formed with a latching tooth structure; the rack member is slidably connected with the locking assembly; the driving assembly comprises a roller, a first gear and a second gear, the driving assembly is movably connected with the locking assembly, the first gear is meshed with the first sawtooth of the rack member; the locking assembly comprises an elastic member, and the second gear is latched to the latching tooth structure by pushing the elastic member; when the roller is pushed by an external force, the second gear is disengaged from the latching tooth structure, and the rack member is slidable in the length direction. The present invention can adjust the tension of the watch strap by only driving the roller, and the operation is simple and convenient.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of wearable devices, and more specifically, to a watch buckle with adjustable strap tightness and a watch. Background Art

[0002] A watch, also known as a wristwatch, is an instrument worn on the wrist to tell time and display the time. Watches are usually made of leather, rubber, nylon, stainless steel and other materials to make a strap to tie the dial that displays the time to the wrist.

[0003] At present, in order to achieve adjustable strap length and facilitate users to quickly adjust the tightness of the strap to improve wearing comfort, most existing watches are equipped with a tension adjustment device for adjusting the strap length on the buckle. Since the length of the buckle is fixed, the wearing length can be adjusted by adjusting the overlapped part of the strap and the buckle, thereby adjusting the tightness of the strap.

[0004] However, the operation method of adjusting the tightness of the existing watch strap is relatively complicated. It is usually necessary to drive the strap to slide along the length direction while driving (for example, pressing) the switch part, so that the tightness of the strap needs to be adjusted by both hands at the same time, and even the watch needs to be removed from the wrist to adjust it. The operation is cumbersome and inefficient, making the practicality of use relatively low. Summary of the invention

[0005] The embodiments of the present invention provide a watch buckle and a watch with adjustable strap tension to address the problems that the operation method of adjusting the tightness of the existing watch strap is relatively complicated, the watch needs to be disassembled to achieve adjustment, the operation is cumbersome, and the practicality of use is low.

[0006] The technical solution to the above technical problem provided by the embodiment of the present invention is to provide a watch buckle for adjusting the tightness of a watch strap, comprising a buckle base and a cover, one end of the cover being pivotally fixed to the buckle base via a first pin, the watch buckle for adjusting the tightness of the watch strap further comprising a driving assembly, a locking assembly and a rack member for assembling to the tail end of the watch strap, the rack member being provided with a first sawtooth arranged along the length direction of the watch strap;

[0007] The locking assembly is installed in the face cover, and the locking assembly is formed with a latching tooth structure and a guide groove structure arranged along the length direction of the face cover; the rack member is provided with a guide structure adapted to the guide groove structure, and the rack member is slidably connected with the locking assembly in a manner that the guide structure is matched to the guide groove structure;

[0008] The driving assembly includes a roller, a first gear and a second gear that are coaxially connected, and the driving assembly is assembled to the locking assembly in a movably connected manner, and when the rack member is movably connected to the locking assembly, the first gear is meshed with the first sawtooth of the rack member; the locking assembly includes an elastic member, the driving assembly is connected to the elastic member, and the second gear is pushed by the elastic member to engage with the tooth structure to lock and fix the roller and the first gear; when the roller is pushed by an external force, the elastic member is squeezed to disengage the second gear from the tooth structure, and drive the first gear to drive the first sawtooth, so that the rack member slides along the length direction in the guide groove structure.

[0009] Preferably, the locking assembly includes two mounting seats, the latching structure includes a pressure tooth plate respectively mounted on each of the mounting seats, the pressure tooth plate having a second sawtooth; the first gear is matched with the first sawtooth of the rack member, the second gear is matched with the second sawtooth of the pressure tooth plate, and the tooth depth of the second sawtooth is less than the tooth depth of the first sawtooth;

[0010] When the second gear is meshed and engaged with the second saw teeth, the tooth portion of the first gear does not disengage from the first saw teeth of the rack member.

[0011] Preferably, the top surface of each mounting seat is respectively provided with a tooth-pressing groove, and a movable groove and an elastic groove located on the bottom surface of the tooth-pressing groove, the elastic groove is located in the movable groove, and the movable groove and the elastic groove are respectively arranged along the meshing direction of the first sawtooth; the elastic member is assembled and fixed in the elastic groove, the tooth-pressing plate is assembled and fixed in the tooth-pressing groove, and the second sawtooth of the tooth-pressing plate faces the elastic groove;

[0012] The driving assembly includes two first gears and two second gears, and the first ends of the two first gears are respectively fixedly connected to the two ends of the rollers, and the first ends of the two second gears are respectively fixedly connected to the second ends of the two first gears; the second ends of the two second gears are respectively provided with pivot convex shafts adapted to the movable grooves, and the driving assembly is movably connected to the locking assembly by inserting the pivot convex shafts of the two second gears into the movable grooves of the two mounting seats, and the two pivot convex shafts are respectively connected to the elastic members, and under the pushing action of the elastic members, the two second gears are respectively clamped to the second serrations of the pressure plate.

[0013] Preferably, the elastic member includes a limiting member and a compression spring, and the limiting member is assembled to the elastic groove through the compression spring; the end of the limiting member away from the compression spring has a slot adapted to the pivot convex shaft, and the slot is snapped onto the pivot convex shaft under the pushing action of the compression spring; the shape and size of the elastic groove are adapted to the main body of the limiting member, and at least a part of the main body of the limiting member is inserted and limited in the elastic groove.

[0014] Preferably, the two mounting seats are respectively fixed to the side walls of the cover by screws, and the sides of the two mounting seats facing each other are respectively provided with strip grooves penetrating along the length direction of the cover;

[0015] The two sides of the rack component are respectively provided with convex edges matched with the strip-shaped grooves of the two mounting seats, and the rack component is slidably connected with the locking assembly in a manner that the convex edges are snapped into the strip-shaped grooves of the two mounting seats.

[0016] Preferably, a first limiting convex shaft is respectively provided at the first end of each of the first gears, and the cross section of the first limiting convex shaft is not circular; the two ends of the roller in the axial direction respectively have first assembly slots adapted to the first limiting convex shaft, and the two first gears are respectively coaxially assembled to the two ends of the roller by inserting the first limiting convex shaft into the first assembly slots, and operate synchronously with the roller;

[0017] A second limiting cam is provided at the first end of each of the second gears, and the cross-section of the second limiting cam is not circular; a second assembly slot matched with the second limiting cam is provided at the second end of each of the first gears, and the two first gears are coaxially assembled to the two second gears by inserting the second limiting cam into the second assembly slot, and operate synchronously with the roller and the two first gears.

[0018] Preferably, the rack member is provided with a limiting groove arranged along the length direction of the strap, and when the rack member is slidably connected to the locking assembly, at least a portion of the roller is embedded in the limiting groove, and the two end faces of the roller in the axial direction are respectively close to the two side walls of the limiting groove.

[0019] Preferably, the outer wall of the roller is provided with an anti-slip structure, and the top surface of the face cover is provided with an operating opening, and when the driving assembly and the locking assembly are assembled into the face cover, the roller is exposed to the operating opening, and at least a portion of the anti-slip structure of the roller protrudes from the plane where the operating opening is located.

[0020] Preferably, the buckle-making base includes a frame and a core, and the first end of the core is pivotally fixed to one end of the frame by a second pin, and the face cover is pivotally fixed to the second end of the core by a first pin; the frame has an air avoidance groove arranged along the length direction and adapted to the main body of the core, and when the core is buckled into the frame by rotating around the second pin, the main body of the core is embedded in the air avoidance groove.

[0021] An embodiment of the present invention also provides a watch, comprising a watch strap, and a watch buckle with adjustable tightness as described in any of the above items; the tail end of the watch strap has a first assembly hole, the rack component is provided with a second assembly hole adapted to the first assembly hole, and the rack component is fixedly connected to the watch strap by a fastener passing through the second assembly hole and the first assembly hole.

[0022] The buckle and watch with adjustable strap tightness of the embodiment of the present invention have the following beneficial effects: by setting a roller, the tightness of the strap can be adjusted by simply pressing and rolling the roller, and the adjustment operation is simple and convenient, and can be completed with just one finger. At the same time, there is no need to disassemble the watch, which effectively solves the problem of cumbersome operation, makes the operation more efficient, and has higher practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the exploded structure of a buckle for adjusting the tightness of a strap provided by an embodiment of the present invention;

[0024] Figure 2 It is a schematic structural diagram of a cross section along the width direction of a buckle capable of adjusting the tightness of a strap provided by an embodiment of the present invention;

[0025] Figure 3 It is a schematic structural diagram of a cross section along the length direction of a watch buckle capable of adjusting the tightness of a watch strap provided by an embodiment of the present invention;

[0026] Figure 4 The present invention is a schematic diagram of the assembly operation of a belt-type watch buckle for adjusting the tightness of a watch strap provided in an embodiment of the present invention, wherein: Figure (a) is a schematic diagram of the operation of pushing a driving roller; Figure (b) is a schematic diagram of the action of rolling the roller to slide the rack component toward the direction where the face cover is located; Figure (c) is a schematic diagram of the action of rolling the roller to slide the rack component away from the face cover; Figure (d) is a structural schematic diagram of the elastic member pushing the second gear to engage with the tooth structure. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] like Figure 1 The figure is a schematic diagram of the decomposed structure of the buckle with adjustable strap tension provided by an embodiment of the present invention, which can be applied to the field of wearable device technology, especially in watches. The buckle with adjustable strap tension in this embodiment includes a buckle base 1 and a cover 2, one end of the cover 2 is pivotally fixed to the buckle base 1 by a first pin shaft 3, that is, the cover 2 can be fastened to the buckle base 1 by rotating around the first pin shaft 3, or can be rotated around the first pin shaft 3 to be separated from the buckle base 1, so as to increase or decrease the total length of the buckle with adjustable strap tension, so as to achieve wearing.

[0029] Combination Figure 2 As shown, the above-mentioned buckle for adjusting the tightness of the strap further includes a driving component 4, a locking component 5 and a rack member 6, wherein the rack member 6 is used to be assembled to the tail end of the strap to achieve the connection between the buckle and the strap. In addition, the rack member 6 is provided with a first sawtooth 61. In order to ensure that the rack member 6 can drive the watch to reliably extend and retract along the length direction of the strap and adjust the wearing length, the first sawtooth 61 should be arranged along the length direction of the strap.

[0030] The locking assembly 5 is installed in the face cover 2, and the locking assembly 5 can be protected by the face cover 2, thereby improving the overall stability of the tension adjustment mechanism. In addition, the locking assembly 5 is formed with a latching tooth structure and a guide groove structure 51, and the rack member 6 is provided with a guide structure 62, and the guide structure 62 is adapted to the guide groove structure 51, so that the rack member 6 can be slidably connected with the locking assembly 5 by the guide structure 62 being matched to the guide groove structure 51. Of course, the guide groove structure 51 is preferably arranged along the length direction of the face cover 2, and the guide structure 62 is preferably arranged along the length direction of the watchband, so as to improve the rationality of the structural design and ensure that the rack member 6 can reliably slide along the length direction of the face cover 2.

[0031] The driving assembly 4 of this embodiment includes a roller 41, a first gear 42 and a second gear 43, and the roller 41, the first gear 42 and the second gear 43 are coaxially connected to ensure that when the roller 41 is driven to roll, the first gear 42 and the second gear 43 can rotate coaxially with the roller 41.

[0032] Combination Figure 3 As shown, the drive assembly 4 is assembled to the locking assembly 5 in a movable manner, for example, assembled and fixed to the locking assembly 5 in a manner that it can move vertically up and down along the locking assembly 5. In particular, when the rack member 6 is slidably connected to the locking assembly 5, the first gear 42 is engaged with the first serration 61 of the rack member 6, so the rack member 6 can be locked by limiting the drive assembly 4, or the rack member 6 can be moved along the length direction by driving (for example, rolling) the roller 41.

[0033] Since the locking assembly 5 includes an elastic member 52 (such as a spring assembly), and the elastic member 52 is connected to the driving assembly 4, the second gear 43 can be pushed by the elastic member 52 to engage with the engaging tooth structure to lock and fix the roller 41 and the first gear 42. At this time, the roller 41 cannot be rolled to avoid misoperation, and the tooth portion of the second gear 43 can also engage with the first serration 61 to achieve limited fixation of the rack member 6.

[0034] like Figure 4 As shown, during operation, it is only necessary to press the roller 41 (i.e., apply external force to the roller 41), so that the roller 41 moves toward the elastic member 52 under the action of the applied external force, and squeezes the elastic member 52, so that the second gear 43 disengages from the latching structure (and the first gear 42 meshes with the first sawtooth 61), that is, the drive assembly 4 exits the locked state. Then, rolling the roller 41 drives the first gear 42 to rotate, thereby driving the first sawtooth 61, so that the rack member 6 can slide in the guide groove structure 51 along the length direction, thereby achieving the function of adjusting the tightness of the watchband.

[0035] The above-mentioned buckle with adjustable strap tightness is provided with a roller 41, so that the tightness of the strap can be adjusted by simply pressing and rolling the roller 41. The adjustment operation is simple and convenient, and can be completed using only one finger, and there is no need to disassemble the watch, which effectively solves the problem of troublesome operation, makes the operation more efficient, and improves the practicality of use.

[0036] In one embodiment of the present invention, the locking assembly 5 includes two mounting seats 53, and the two mounting seats 53 are respectively fixedly connected to the side walls of the cover 2, for example, they are respectively fixed to the side walls of the cover 2 by screws, so as to facilitate assembly and disassembly. In addition, the two mounting seats 53 are respectively provided with strip grooves penetrating along the length direction of the cover 2 on the sides facing each other, and the strip grooves of the two mounting seats 53 cooperate to form the above-mentioned guide groove structure 51.

[0037] Furthermore, the guide structure 62 is composed of the convex edges on both sides of the rack member 6, and the convex edges on both sides of the rack member 6 are respectively matched with the strip grooves of the two mounting seats 53, so the rack member 6 can be slidably connected with the locking assembly 5 by snapping the convex edges into the strip grooves of the two mounting seats 53. The distance between the sides of the two mounting seats 53 facing each other is preferably slightly larger than the distance between the two sides of the rack member 6 (specifically, the width of the rack member 6), so that the width direction of the rack member 6 can be limited, and the rack member 6 can be effectively prevented from moving during the sliding process, so that the sliding of the rack member 6 is smoother and more reliable.

[0038] Of course, in actual applications, the rack component 6 can also adopt other connection methods to achieve sliding connection in the face cover 2. For example, two guide pins are set on the face cover 2, and a U-shaped guide groove compatible with the two guide pins is set on the rack component 6. The two guide pins are inserted into the U-shaped guide groove to achieve the guiding and limiting of the rack component 6.

[0039] In addition, the above-mentioned tooth structure includes two pressure tooth plates 54 respectively installed on two mounting seats 53, each pressure tooth plate 54 has a second serration 541, and the second serration 541 is adapted to the second gear 43, so the locking assembly 5 can lock the driving assembly 4 by the engagement of the second serration 541 with the second gear 43.

[0040] In particular, to ensure that the first sawtooth 61 can be continuously engaged with the first sawtooth 61, the tooth depth of the second sawtooth 541 should be less than the tooth depth of the first sawtooth 61, so that when the second gear 43 is engaged and locked to the second sawtooth 541, the first gear 42 can also be engaged with the first sawtooth 61, that is, the tooth portion U of the first gear 42 is disengaged from the first sawtooth 61 of the rack member 6, so as to ensure that the rack member 6 will not slide unless driven by the drive assembly 4, and to avoid the second gear 43 moving and engaging with the second sawtooth 541 under the pushing action of the elastic member 52, resulting in the loss of the limit of the rack member 6 and causing the rack member 6 to fall out. In practical applications, the tooth depth of the second sawtooth 541 is preferably less than one-third of the tooth depth of the first sawtooth 61.

[0041] In another embodiment of the present invention, the top surface of each mounting seat 53 is respectively provided with a tooth-pressing groove 531, a movable groove 532 and an elastic groove 533, wherein the movable groove 532 and the elastic groove 533 are respectively located at the bottom surface of the tooth-pressing groove 531, and the elastic groove 533 is located in the movable groove 532. In particular, the elastic member 52 is assembled and fixed in the elastic groove 533, the tooth-pressing plate 54 is assembled and fixed in the tooth-pressing groove 531, and the second serration 541 of the tooth-pressing plate 54 faces the elastic groove 533, so as to ensure that the driving assembly 4 can be pushed toward the direction of the tooth-pressing plate 54, so that the second gear 43 can be reliably engaged with the second serration 541 on the tooth-pressing plate 54.

[0042] To ensure that the first gear 42 can reliably mesh with the first sawtooth 61 of the rack member 6 when the roller 41 is pressed, the movable groove 532 and the elastic groove 533 are preferably arranged along the meshing direction of the first sawtooth 61 .

[0043] Specifically, the driving assembly 4 includes two first gears 42 and two second gears 43, and the first ends of the two first gears 42 are respectively fixedly connected to the two ends of the roller 41, and the first ends of the two second gears 43 are respectively fixedly connected to the second ends of the two first gears 42. In particular, the second ends of the two second gears 43 are respectively provided with pivoting convex shafts 431, and the pivoting convex shafts 431 of the two second gears 43 are respectively matched with the movable grooves 532 of the two mounting seats 53, so that the driving assembly 4 can be movably connected with the locking assembly 5 by inserting the pivoting convex shafts 431 of the two second gears 43 into the movable grooves 532 of the two mounting seats 53.

[0044] Furthermore, when the pivoting protruding shafts 431 of the two second gears 43 are respectively inserted into the movable grooves 532 of the two mounting seats 53, the two pivoting protruding shafts 431 are respectively connected to the elastic members 52 installed in the elastic grooves 533 of the two mounting seats 53, so that the driving assembly 4 can make the two second gears 43 respectively snap into the second serrations 541 of the tooth-pressing plate 54 under the pushing action of the elastic members 52. When the roller 41 is pressed, the pivoting protruding shafts 431 of the two second gears 43 will respectively press the two elastic members 52, so that the two second gears 43 are separated from the second serrations 541 of the tooth-pressing plate 54.

[0045] The elastic member 52 of this embodiment includes a limiting member 521 and a compression spring 522, and the limiting member 521 is assembled to the elastic groove 533 through the compression spring 522. In particular, a clamping groove is provided at one end of the limiting member 521 away from the compression spring 522, and the clamping groove is adapted to the pivoting convex shaft 431, so that the limiting member 521 moves toward the tooth-pressing plate 54 under the elastic force of the compression spring 522, and the clamping groove is buckled onto the pivoting convex shaft 431. Of course, in practical applications, the elastic member 52 can also be a spring assembly of other structures, such as an ear needle.

[0046] Since the shape and size of the elastic groove 533 are compatible with the main body of the limiting member 521, and at least a part of the main body of the limiting member 521 is inserted into and limited in the elastic groove 533, the limiting member 521 can be limited and guided by the elastic groove 533, so that the limiting member 521 can reliably extend and retract along the meshing direction of the second saw tooth 541 under the action of the compression spring 522.

[0047] In one embodiment of the present invention, the first end of each first gear 42 is respectively provided with a first limiting convex shaft 421, and the cross section of the first limiting convex shaft 421 is not circular (the cross section of the first limiting convex shaft 421 is preferably square for easy processing). The two ends of the roller 41 in the axial direction respectively have a first assembly slot 411, and the first assembly slot 411 is adapted to the first limiting convex shaft 421, so the two first gears 42 can be coaxially assembled to the two ends of the roller 41 by inserting the first limiting convex shaft 421 into the first assembly slot 411, respectively, to achieve synchronous operation with the roller 41, that is, when the roller 41 is driven by an external force to roll and rotate, the two first gears 42 rotate synchronously with the roller 41, ensuring that the two first gears 42 can synchronously drive the first sawtooth 61 when the roller 41 is rolled.

[0048] Similarly, a second limiting convex shaft 432 is provided at the first end of each second gear 43, and the cross section of the second limiting convex shaft 432 is not circular (the cross section of the second limiting convex shaft 432 is preferably square for easy processing). In addition, a second assembly slot 422 is provided at the second end of each first gear 42, and the second assembly slot 422 is adapted to the second limiting convex shaft 432, so that the two first gears 42 are coaxially assembled to the two second gears 43 by inserting the second limiting convex shaft 432 into the second assembly slot 422, respectively, so as to achieve synchronous operation with the roller 41 and the two first gears 42, that is, when the roller 41 is driven by an external force to roll and rotate, the two second gears 43 can rotate synchronously with the roller 41 and the two first gears 42, so as to ensure that when the second gear 43 is engaged with the second sawtooth 541, the roller 41 and the two first gears 42 can be effectively locked and fixed.

[0049] Of course, in practical applications, the roller 41, the two first gears 42 and the two second gears 43 can be processed as one body, which simplifies the structure of the driving component 4 and makes the overall structural strength of the driving component 4 higher, while facilitating assembly and improving assembly efficiency.

[0050] In addition, the rack member 6 is provided with a limiting groove 63 arranged along the length direction of the watchband, and when the rack member 6 is slidably connected to the locking assembly 5, at least a portion of the roller 41 is embedded in the limiting groove 63, and the two end faces of the roller 41 in the axial direction are respectively close to the two side walls of the limiting groove 63. Therefore, the above-mentioned clasp can limit the roller 41 through the limiting groove 63 of the rack member 6, thereby preventing the drive assembly 4 from moving along its axial direction, improving the installation stability of the drive assembly 4, and ensuring that the two pivoting convex shafts 431 at both ends can be reliably inserted into the movable grooves 532 of the two mounting seats 53, without providing a limiting member for the drive assembly 4, so that the structure can be effectively simplified and the difficulty of disassembly and assembly can be reduced.

[0051] In particular, the outer wall of the roller 41 is provided with an anti-skid structure to ensure the stability of the driving operation of the roller 41. In addition, the top surface of the face cover 2 is provided with an operation opening 21, and when the drive assembly 4 and the locking assembly 5 are assembled into the face cover 2, the roller 41 is exposed to the operation opening 21, and at least a part of the anti-skid structure of the roller 41 protrudes from the plane where the operation opening 21 is located, so that the wearer's fingers can directly touch the roller 41 to efficiently complete the adjustment operation, and at the same time, the drive assembly 4 and the locking assembly 5 can be effectively protected to improve the stability of the overall structure.

[0052] In another embodiment of the present invention, the buckle base 1 includes a frame 11 and a core 12, and the first end of the core 12 is pivotally fixed to one end of the frame 11 through a second pin 13, and the cover 2 is pivotally fixed to the second end 13 of the core 12 through a first pin 3. Thus, the core 12 can be separated from the frame 11 by rotating around the second pin 13 to be unfolded, and the cover 2 can be separated from the core 12 by rotating around the first pin 3 to be unfolded, thereby increasing the wearing length to achieve wearing. After wearing, the core 12 is rotated around the second pin 13 to be buckled onto the frame 11, and the cover 2 is rotated around the first pin 3 to be buckled onto the frame 11 and the core 12, thereby shortening the wearing length to tighten the watch on the arm.

[0053] Preferably, the frame 11 is provided with an air avoidance groove, which is arranged along the length direction and is adapted to the main body of the core 12, and when the core 12 is engaged with the frame 11 by rotating around the second pin shaft 13, the main body of the core 12 is embedded in the air avoidance groove, which not only protects the core 12, but also reduces the volume of the buckle base 1 while ensuring the wearing function, so that the buckle base 1 has a high degree of integration.

[0054] An embodiment of the present invention also provides a watch, which includes a watch strap and the above-mentioned watch strap buckle with adjustable tightness, wherein: the tail end of the watch strap has a first assembly hole, the rack component 6 is provided with a second assembly hole adapted to the first assembly hole, and the rack component 6 is fixedly connected to the watch strap by a fastener passing through the second assembly hole and the first assembly hole.

[0055] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A watch buckle capable of adjusting the tightness of a watch strap, comprising a buckle base and a cover, wherein one end of the cover is pivotally fixed to the buckle base through a first pin. It is characterized in that The buckle for adjusting the tightness of the strap further comprises a driving assembly, a locking assembly and a rack member for being assembled to the tail end of the strap, wherein the rack member is provided with a first sawtooth arranged along the length direction of the strap; The locking assembly is installed in the face cover, and the locking assembly is formed with a latching tooth structure and a guide groove structure arranged along the length direction of the face cover; the rack member is provided with a guide structure adapted to the guide groove structure, and the rack member is slidably connected with the locking assembly in a manner that the guide structure is matched to the guide groove structure; The driving assembly comprises a roller, a first gear and a second gear which are coaxially connected, and the driving assembly is assembled to the locking assembly in a movably connected manner, and when the rack member is movably connected to the locking assembly, the first gear meshes with the first sawtooth of the rack member; the locking assembly comprises an elastic member, the driving assembly is connected to the elastic member, and the second gear is pressed by the elastic member to engage with the latching tooth structure, so as to lock and fix the roller and the first gear; when the roller is pushed by an external force, the elastic member is squeezed to disengage the second gear from the latching tooth structure, and drive the first gear to drive the first sawtooth, so that the rack member slides in the guide groove structure along the length direction; The locking assembly includes two mounting seats, the latching structure includes a pressure tooth plate respectively mounted on each of the mounting seats, the pressure tooth plate having second saw teeth; the first gear is matched with the first saw teeth of the rack member, the second gear is matched with the second saw teeth of the pressure tooth plate, and the tooth depth of the second saw teeth is less than the tooth depth of the first saw teeth; when the second gear is meshed and latched to the second saw teeth, the tooth portion of the first gear does not disengage from the first saw teeth of the rack member, so as to avoid the second gear moving and latching to the second saw teeth under the pushing action of the elastic member, resulting in the loss of the limit of the rack member and causing the rack member to fall out; The top surface of each mounting seat is respectively provided with a tooth pressing groove, and a movable groove and an elastic groove located on the bottom surface of the tooth pressing groove, the elastic groove is located in the movable groove, and the movable groove and the elastic groove are respectively arranged along the meshing direction of the first saw tooth; the elastic member is assembled and fixed in the elastic groove, the tooth pressing plate is assembled and fixed in the tooth pressing groove, and the second saw tooth of the tooth pressing plate faces the elastic groove.

2. The buckle for adjusting the tightness of the strap according to claim 1, It is characterized in that The driving assembly includes two first gears and two second gears, and the first ends of the two first gears are respectively fixedly connected to the two ends of the rollers, and the first ends of the two second gears are respectively fixedly connected to the second ends of the two first gears; the second ends of the two second gears are respectively provided with pivot convex shafts adapted to the movable grooves, and the driving assembly is movably connected to the locking assembly by inserting the pivot convex shafts of the two second gears into the movable grooves of the two mounting seats, and the two pivot convex shafts are respectively connected to the elastic members, and under the pushing action of the elastic members, the two second gears are respectively clamped to the second serrations of the pressure plate.

3. The buckle for adjusting the tightness of the strap according to claim 2, It is characterized in that The elastic member includes a limiting member and a compression spring, and the limiting member is assembled to the elastic groove through the compression spring; the limiting member has a slot adapted to the pivot convex shaft at one end away from the compression spring, and the slot is snapped onto the pivot convex shaft under the pushing action of the compression spring; the shape and size of the elastic groove are adapted to the main body of the limiting member, and at least a part of the main body of the limiting member is inserted and limited in the elastic groove.

4. The buckle for adjusting the tightness of the strap according to claim 1, It is characterized in that The two mounting seats are respectively fixed to the side walls of the cover by screws, and the sides of the two mounting seats facing each other are respectively provided with strip grooves penetrating along the length direction of the cover; The two sides of the rack component are respectively provided with convex edges matched with the strip-shaped grooves of the two mounting seats, and the rack component is slidably connected with the locking assembly in a manner that the convex edges are snapped into the strip-shaped grooves of the two mounting seats.

5. The buckle for adjusting the tightness of the strap according to claim 3, It is characterized in that A first limiting convex shaft is respectively provided at the first end of each of the first gears, and the cross section of the first limiting convex shaft is not circular; the two ends of the roller in the axial direction respectively have first assembly slots adapted to the first limiting convex shaft, and the two first gears are respectively coaxially assembled to the two ends of the roller by inserting the first limiting convex shaft into the first assembly slots, and operate synchronously with the roller; A second limiting cam is provided at the first end of each of the second gears, and the cross-section of the second limiting cam is not circular; a second assembly slot matched with the second limiting cam is provided at the second end of each of the first gears, and the two first gears are coaxially assembled to the two second gears by inserting the second limiting cam into the second assembly slot, and operate synchronously with the roller and the two first gears.

6. The buckle for adjusting the tightness of the strap according to claim 1, It is characterized in that The rack member is provided with a limiting groove arranged along the length direction of the strap, and when the rack member is slidably connected to the locking assembly, at least a portion of the roller is embedded in the limiting groove, and the two end faces of the roller in the axial direction are respectively close to the two side walls of the limiting groove.

7. The buckle for adjusting the tightness of the strap according to claim 1, It is characterized in that The outer wall of the roller is provided with an anti-slip structure, and the top surface of the face cover is provided with an operating opening. When the driving assembly and the locking assembly are assembled into the face cover, the roller is exposed to the operating opening, and at least a portion of the anti-slip structure of the roller protrudes from the plane where the operating opening is located.

8. The buckle for adjusting the tightness of the strap according to claim 1, It is characterized in that The buckle-making base includes a frame and a core, and the first end of the core is pivotally fixed to one end of the frame through a second pin, and the surface cover is pivotally fixed to the second end of the core through a first pin; the frame has an air avoidance groove arranged along the length direction and adapted to the main body of the core, and when the core is buckled into the frame by rotating around the second pin, the main body of the core is embedded in the air avoidance groove.

9. A watch, It is characterized in that It comprises a watch strap and a buckle with adjustable tightness as described in any one of claims 1 to 8; the tail end of the watch strap has a first assembly hole, the rack component is provided with a second assembly hole adapted to the first assembly hole, and the rack component is fixedly connected to the watch strap by a fastener passing through the second assembly hole and the first assembly hole.

Images