Back panel adjustment device and backpack

Abstract

Disclosed in the present utility model are a back panel adjustment device and a backpack. The back panel adjustment device comprises: a fixed base, which is provided with a slide channel and with fitting grooves on two side walls, the fitting grooves being provided with setting grooves; a slider, of which two ends can clamp walls of the fitting grooves to slide in the fitting grooves; an operating member; an extending and retracting member assembly, which consists of two extending and retracting members, wherein two ends of the extending and retracting members clamp the walls of the fitting grooves and extension ends thereof extending into the fitting grooves are adapted to the setting grooves and are stopped and locked at first positions in the setting grooves, and when the extension ends of the extending and retracting members are located in second positions for exiting the setting grooves, the extending and retracting members are in an unlocked state, each extending and retracting member being provided therein with a spring slot; and elastic members, each of which is arranged in a spring slot, and has one end abutted against the slider and the other end abutted against the bottom of the spring slot, so as to apply elastic forces to the extending and retracting members to stop same at the first positions in the setting grooves. Among the back panel adjustment device and the backpack that are provided in the utility model, the backpack is provided with the back panel adjustment device and the position of a back panel of the backpack can be adjusted according to individual requirements of users, thereby relieving carrying pressure.

Description

A back width adjusting device and backpack TECHNICAL FIELD

[0001] The utility model relates to the field of backpack design, specifically relates to a back width adjusting device and backpack. BACKGROUND

[0002] With the increasing concern of modern society on children's health, children's backpacks, as indispensable equipment for children in their daily learning and life, their design and functionality have gradually been valued. Especially for children who are growing up, their height changes frequently and their body develops rapidly, which makes it difficult for traditional fixed-size backpacks to meet their needs. Although the traditional fixed-size backpacks consider the height range of most children when designing, due to the large difference in children's height and the significant change in their height as they grow up, fixed-size backpacks often cannot adapt to the individual needs of each child, resulting in children may face the problem of discomfort, instability and even affect their health during carrying. SUMMARY

[0003] The utility model aims at overcoming the above-mentioned defects or problems in the background art, providing a back width adjusting device and backpack, which is equipped with a back width adjusting device and can adjust the back width position according to the individual needs of the user, thereby effectively reducing the pressure during carrying.

[0004] To achieve the above-mentioned purpose, the utility model each embodiment adopts the following technical scheme but is not limited to the following scheme:

[0005] The first technical solution relates to a back width adjusting device for adjusting the position of the back width of a backpack, comprising: a fixed seat provided with a sliding channel extending in a first direction, and two side walls provided with clamping grooves extending in the first direction; the clamping grooves are provided with a plurality of evenly spaced gear grooves along the extension direction, and a spacing wall is arranged between adjacent gear grooves; the gear grooves are symmetrically distributed in the clamping grooves on both sides of the fixed seat and correspond one by one; a sliding member is provided with clamping structures at both ends for clamping the clamping groove walls, so that the sliding member slides in the clamping groove in the first direction; at the same time, the sliding member and the fixed seat slide in the first direction along the sliding channel; an operating member is movably arranged on the outside of the sliding member and is adapted to be pressed in a second direction perpendicular to the first direction; a telescopic member assembly is composed of two telescopic members, which are arranged inside the sliding member, and the two telescopic members abut the two sides of the operating member; the telescopic member assembly is adapted to be slidably connected with the sliding member in a third direction perpendicular to the first direction and the second direction or its extension direction; the two ends of the telescopic member clamp the groove walls of the clamping groove, and the insertion end inserted into the clamping groove is adapted to the first position in the gear groove for locking; when the insertion end of the telescopic member is in the second position away from the gear groove, the telescopic member is in the unlocked state, and the telescopic member and the sliding member are adapted to slide together in the first direction in the clamping groove; each telescopic member is provided with a spring groove; and an elastic member is arranged in the spring groove, one end of which abuts against the sliding member, and the other end abuts against the groove bottom of the spring groove, so as to apply a spring force to the telescopic member, so that the telescopic member can stop at the first position in the gear groove when not subjected to external force; press the operating member in the second direction, the telescopic member assembly is subjected to the thrust of the operating member and overcomes the elastic force of the elastic member to slide to the second position in the third direction or its extension direction; the sliding member assembly slides in the first direction and passes through the spacing wall to the above of the adjacent gear groove for position adjustment, and the operating member is released, the elastic force of the elastic member promotes the telescopic member to slide in a direction perpendicular to the third direction or its extension direction to the first position, so that the insertion end of the telescopic member enters the adjacent gear groove for relocking, and the operating member is pushed to reset.

[0006] The second technical solution is based on the first technical solution, wherein the operating member is provided with a first mating surface and a second mating surface facing each other, and the first mating surface and the second mating surface are both inclined surfaces gradually approaching in the second direction, and the first mating surface and the second mating surface are respectively inclined surface matched with the contact surfaces of the two telescopic members.

[0007] The third technical solution is based on the second technical solution, wherein the telescopic member is provided with a sliding groove extending in the third direction, and the sliding member is provided with a sliding rod slidably matched with the sliding groove; a sliding space is arranged between the sliding rod and the groove bottom of the sliding groove.

[0008] The fourth technical solution is based on the third technical solution, wherein the first guide angle is arranged on the end face of the interval wall of the gear slot, and the interval wall is provided with a second guide angle matched with the first guide angle.

[0009] The fifth technical solution is based on the first technical solution, wherein the sliding member is further provided with a cover plate, the cover plate is provided with a space matched with the operation member to enable the operation member to be pressed in the second direction, and a gap is arranged between the cover plate and the sliding member to enable the corresponding part of the back panel to pass through and be placed in the gap.

[0010] The sixth technical solution is based on the fifth technical solution, wherein a groove recessed to the inside of the fixed seat is arranged in the middle of the sliding channel of the fixed seat, the groove is communicated with the sliding channel, and the sliding member is provided with a sliding end matched with the groove.

[0011] The seventh technical solution is based on any one of the first to sixth technical solutions, wherein the backpack comprises a backpack body, a back panel, a shoulder strap and an adjusting device, the adjusting device adopts the back panel adjusting device, the back panel is movably connected with the backpack body, the adjusting device is fixedly connected with the backpack body to control the position of the back panel on the backpack body, and one end of the shoulder strap is fixedly connected with the backpack body and the other end is fixedly connected with the back panel.

[0012] The eighth technical solution is based on the seventh technical solution, wherein a connecting belt is further included, the connecting belt is a U-shaped belt, the bottom and two ends of the U-shaped belt are fixedly connected with the backpack body near the back of the back panel, the back panel passes through the two sides of the U-shaped belt and is movably connected with the backpack body through the adjusting device.

[0013] The ninth technical solution is based on the eighth technical solution, wherein the adjusting device is arranged between the backpack body and the back panel, the operation member and the cover plate are exposed on the side of the back panel away from the backpack body, and the fixed seat is fixedly connected with the backpack body.

[0014] The tenth technical solution is based on the ninth technical solution, wherein a plurality of position marks are arranged on the side of the backpack body near the back panel, the back panel is moved in the first direction and exposes the position marks to prompt the operation member to be loosened, and the telescopic member assembly is parked at the first position to be locked.

[0015] According to the above description of the various embodiments of the present application, compared with the prior art, the various embodiments of the present application have the following beneficial effects:

[0016] In the first technical solution and related embodiments, the telescopic component in the device cooperates with the gear slot in the clamping groove to achieve height adjustment of the backpack back width. The telescopic component is built into the sliding component, and the two ends clamp the groove wall of the clamping groove. When the telescopic component stops at the gear slot, it is locked by the elastic force of the elastic component to ensure the stability of the backpack back width. The user can easily press the operating component to make the telescopic component slide to the second position, thereby releasing the locking state with the gear slot. This operation method is simple and intuitive, and is convenient for the user to quickly adjust. When the sliding component assembly slides along the first direction and passes through the partition wall to the upper side of the adjacent gear slot, the operating component is released, and the elastic force of the elastic component will make the telescopic component slide to the first position and re-enter the adjacent gear slot to stop and lock. Since the gear slots in the clamping groove are uniformly distributed, the device can adapt to the body types and needs of different users and provide personalized backpack back width adjustment.

[0017] In the second technical solution and related embodiments, the design of the operating component introduces a first cooperating surface and a second cooperating surface, both of which are inclined surfaces gradually approaching in the second direction. When the user presses the operating component in the second direction, the first cooperating surface and the second cooperating surface of the operating component will act on the contact surface inclined surfaces of the two telescopic components, respectively, thereby converting the originally pressing force in the second direction into a pushing force in the third direction or its extension direction, so that the telescopic component can smoothly separate from the gear slot and unlock the current position.

[0018] In the third technical solution and related embodiments, the sliding groove on the telescopic component in the third direction cooperates with the sliding rod on the sliding component to form a stable sliding mechanism, which not only ensures smooth and stable sliding of the telescopic component in the third direction or its extension direction in the sliding groove, but also improves the stability and smoothness of the telescopic component during movement, effectively avoiding unnecessary resistance caused by friction or jamming. The appropriate sliding space left between the sliding rod and the sliding groove bottom ensures that the telescopic component has enough range of motion during adjustment, so that it can easily switch between the locked and unlocked states.

[0019] In the fourth technical solution and related embodiments, the design of the guide angle of the inclined surface cooperation between the telescopic component and the partition wall improves the operation flexibility of the adjustment device. Even if the operating component is not completely pressed into place, the inclined surface cooperation of the first guide angle and the second guide angle can effectively guide the telescopic component to smoothly escape from the locked state of the gear slot. Once the telescopic component escapes from the locked state, it can freely slide in the clamping groove along the first direction and enter the position adjustment state.

[0020] In the fifth technical solution and related embodiments, the gap provided between the cover plate and the sliding piece not only provides sufficient space for the corresponding part of the back panel to smoothly pass through and be stably placed in the gap, but also realizes the close cooperation of the back panel and the adjusting device. At the same time, the cover plate and the operating piece are installed on the outside of the back panel, which facilitates the operation of the user. The accommodation space on the cover plate ensures that the operating piece can be smoothly pressed in the second direction without any obstacles. In addition, since the cover plate is fixedly connected with the sliding piece, the user only needs to simply operate the back panel in the first direction to easily drive the cover plate and the sliding piece to slide in the first direction, thereby realizing position adjustment.

[0021] In the sixth technical solution and related embodiments, by providing a groove recessed into the interior of the fixed seat in the middle of the sliding channel of the fixed seat and communicating with the sliding channel, the operating piece is allowed to sink to a deeper depth during pressing, thereby ensuring that the telescopic piece can smoothly reach the second position.

[0022] In the seventh technical solution and related embodiments, the backpack design improves the flexibility and adaptability of the backpack by introducing the back panel adjusting device. The back panel and the backpack body are movably connected, and the position of the back panel on the backpack body is controlled by the adjusting device, so that the backpack can be individually adjusted according to different use scenarios and individual needs. One end of the shoulder strap is firmly connected to the backpack body, and the other end is connected to the back panel. By adjusting the position of the back panel, the effective length and angle of the shoulder strap can also be adjusted. This design is based on the principle of ergonomics, so that the backpack can closely fit the user's back and shoulders, providing the best carrying experience for children. In particular, for children of different heights, the backpack can be easily adjusted to ensure that the weight of the backpack is evenly distributed on the child's back and shoulders, effectively reducing the carrying pressure and preventing physical burden caused by improper backpacks.

[0023] In the eighth technical solution and related embodiments, a U-shaped strap is used as the connecting strap, which is firmly connected to the back of the backpack body near the back panel at the bottom and both ends, ensuring the stable connection between the connecting strap and the backpack body. This design not only provides stable support for the back panel, but also allows the back panel to smoothly pass through the two sides of the U-shaped strap, enabling position adjustment on the backpack body, thereby enhancing the adaptability of the backpack to users of different heights.

[0024] In the ninth technical solution and related embodiments, by embedding the adjusting device between the backpack body and the back panel, the protruding part outside the backpack is effectively reduced, making the appearance of the backpack more simple and beautiful. At the same time, the operating piece and the cover plate are located on the outside of the back panel, which facilitates the operation and adjustment of the user.

[0025] In the tenth technical solution and related embodiments, the to-position mark provides an intuitive visual prompt for the user, which facilitates the user to know when to release the operating member, and helps the user to understand the current position of the back panel and whether to continue to adjust. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description are briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0027] Fig. 1 is a side view of the back panel adjusting device of the embodiment;

[0028] Fig. 2 is a cross-sectional view of A-A in Fig. 1;

[0029] Fig. 3 is a front view of the back panel adjusting device of the embodiment;

[0030] Fig. 4 is a back view of the back panel adjusting device of the embodiment;

[0031] Fig. 5 is a schematic view of the sliding member, the telescopic member assembly and the operating member of the embodiment;

[0032] Fig. 6 is a side view of the fixed seat of the embodiment;

[0033] Fig. 7 is a schematic view of the operating member and the cover plate of the embodiment;

[0034] Fig. 8 is a schematic view of the backpack of the embodiment;

[0035] Fig. 9 is a schematic view of the first to-position mark of the backpack of the embodiment;

[0036] Fig. 10 is a schematic view of the second to-position mark of the backpack of the embodiment.

[0037] Main drawing mark explanation:

[0038] Backpack body 1; back panel 2; shoulder strap 3; fixed seat 4; sliding member 5; operating member 6; telescopic member 7; cover plate 8; back plate 9; first to-position mark 10; second to-position mark 11; slide 12; groove 13; sliding end 14; clamping groove 15; gear slot 16; partition wall 17; spring groove 18; extending end 19; gap 20; first guide angle 21; second guide angle 22; sliding groove 23; sliding rod 24; screw 25; first mounting hole 26; second mounting hole 27; third mounting hole 28; first matching surface 29; second matching surface 30. DETAILED DESCRIPTION

[0039] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are preferred embodiments of the present application, and should not be regarded as excluding other embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0040] In the claims, the description and the drawings of the present application, unless otherwise explicitly defined, the terms such as "first", "second" or "third" are used only to distinguish different objects, and are not used to describe a specific order.

[0041] In the claims, the description and the drawings of the present application, unless otherwise explicitly defined, for the terms of orientation, such as "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation and position relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present application.

[0042] In the claims, the description and the drawings of the present application, unless otherwise explicitly defined, such as the terms "fixedly connected" or "fixedly connected", should be understood broadly, that is, any connection mode between the two without displacement relationship and relative rotation relationship, that is, it includes non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.

[0043] In the claims, the description and the drawings of the present application, such as the terms "include", "have" and their variants, are intended to mean "include but not limited to".

[0044] Referring to FIGS. 1-10, as shown in FIGS. 1-7, a back width adjusting device for adjusting the position of the back width 2 in the backpack, which comprises a fixed seat 4, a sliding piece 5, an operating piece 6, a telescopic piece assembly and an elastic piece.

[0045] The fixed seat 4, as shown in FIG. 3, is provided with a slide 12 extending along the first direction, and a groove 13 recessed towards the interior of the fixed seat 4 is arranged in the middle of the slide 12 and communicates with the slide 12. As shown in FIG. 5, the two side walls of the fixed seat 4 are provided with clamping grooves 15 extending along the first direction; the clamping grooves 15 are provided with a plurality of evenly spaced gear grooves 16 along the extension direction thereof, and a spacing wall 17 is arranged between adjacent gear grooves 16; the gear grooves 16 are symmetrically distributed in the clamping grooves 15 on both sides of the fixed seat 4 and correspond one by one. In this embodiment, the number of gear grooves 16 is two. As shown in FIG. 4, the back of the fixed seat 4 is provided with a back plate 9, and the back plate 9 is provided with three first mounting holes 26 for fixed connection with the backpack body 1.

[0046] The sliding member 5, as shown in FIGS. 1 and 2, is provided with a clamping structure capable of clamping the groove wall of the clamping groove 15 at both ends, so that the sliding member 5 slides in the clamping groove 15 along the first direction; at the same time, the sliding member 5 and the fixed seat 4 slide in the first direction along the slide 12. Specifically, as shown in FIG. 1, the sliding member 5 is provided with a sliding end 14 which is in sliding cooperation with the groove 13. As shown in FIGS. 1, 3 and 7, the sliding member 5 comprises a cover plate 8.

[0047] The operating member 6, as shown in FIGS. 5 and 7, is movably arranged outside the sliding member 5 and is adapted to be pressed along the second direction perpendicular to the first direction. Specifically, as shown in FIG. 7, the operating member 6 is provided with a first cooperating surface 29 and a second cooperating surface 30 facing each other, and the first cooperating surface 29 and the second cooperating surface 30 are both inclined surfaces gradually approaching along the second direction. In this embodiment, the bottom of the operating member 6 is a trapezoidal structure, and the first cooperating surface 29 and the second cooperating surface 30 are two inclined surfaces in contact with the telescopic member assembly.

[0048] As shown in FIGS. 1, 3 and 7, the cover plate 8 is provided with a space for the operating member 6 to make room for the pressing operation along the second direction; as shown in FIGS. 1 and 8, a gap 20 is provided between the cover plate 8 and the sliding member 5, so that the corresponding part of the back panel 2 can pass through and be placed in the gap 20. Specifically, as shown in FIG. 7, the cover plate 8 is provided with four screws 25 along the peripheral wall, and as shown in FIG. 2, the sliding member 5 is provided with four second mounting holes 27 for the connection of the cover plate 8. The gap 20 provided between the cover plate 8 and the sliding member 5 not only provides sufficient space for the corresponding part of the back panel 2 to pass through and be stably placed in the gap 20, but also realizes the close cooperation between the back panel 2 and the adjusting device. At the same time, the cover plate 8 and the operating member 6 are installed on the outside of the back panel 2, which facilitates the operation of the user. The space on the cover plate 8 ensures that the operating member 6 can be smoothly pressed along the second direction without any obstacles. In addition, since the cover plate 8 is fixedly connected with the sliding member 5, the user only needs to simply operate the back panel 2 along the first direction to easily drive the cover plate 8 and the sliding member 5 to slide along the first direction, thereby realizing the position adjustment.

[0049] The telescopic component assembly, as shown in FIG. 2 and FIG. 5, is composed of two telescopic components 7, which are built inside the sliding component 5 and abut the two sides of the operating component 6 respectively. The telescopic component assembly is suitable for being slidably connected with the sliding component 5 in the third direction or the extension direction thereof, which is perpendicular to the first direction and the second direction. The two ends of the telescopic component 7 hold the slot wall of the clamping slot 15, and the extension end 19 extending into the clamping slot 15 is adapted to the gear slot 16 to stop at the first position inside the gear slot 16 for locking. When the extension end 19 of the telescopic component 7 is at the second position away from the gear slot 16, the telescopic component 7 is in the unlocked state, and the telescopic component 7 is suitable for sliding together with the sliding component 5 in the clamping slot 15 in the first direction. Each telescopic component 7 is provided with a spring slot 18. Specifically, the telescopic component assembly is installed inside the sliding component 5, as shown in FIG. 2 and FIG. 5. The outer frame of the sliding component 5 is provided with four third mounting holes 28 for preventing the telescopic component assembly from falling off.

[0050] As shown in FIG. 2 and FIG. 5, the telescopic component 7 is provided with a sliding groove 23 extending in the third direction, and the sliding component 5 is provided with a sliding rod 24 slidably matched with the sliding groove 23. A sliding space is provided between the sliding rod 24 and the groove bottom of the sliding groove 23. The sliding groove 23 extending in the third direction on the telescopic component 7 is matched with the sliding rod 24 on the sliding component 5, forming a stable sliding mechanism, which not only ensures the smooth and stable sliding of the telescopic component 7 in the sliding groove 23 in the third direction or the extension direction thereof, but also improves the stability and smoothness of the telescopic component 7 during movement, effectively avoiding unnecessary resistance caused by friction or jamming. The appropriate sliding space left between the sliding rod 24 and the groove bottom of the sliding groove 23 ensures that the telescopic component 7 has enough range of motion during adjustment, so that it can easily switch between the locked and unlocked states.

[0051] As shown in FIG. 5, the first matching surface 29 and the second matching surface 30 of the operating component 6 are respectively matched with the contact surface bevels of the two telescopic components 7. The design of the operating component 6 introduces the first matching surface 29 and the second matching surface 30, both of which are bevels gradually approaching in the second direction. When the user presses the operating component 6 in the second direction, the first matching surface 29 and the second matching surface 30 of the operating component 6 will act on the contact surface bevels of the two telescopic components 7 respectively, thereby converting the originally pressing force in the second direction into a pushing force in the third direction or the extension direction thereof, so that the telescopic component 7 can smoothly separate from the gear slot 16 and unlock the current position.

[0052] In this embodiment, as shown in FIG. 3, a recess 13 recessed into the fixed seat 4 is arranged in the middle of the sliding channel 12 of the fixed seat 4 and is in communication with the sliding channel 12, allowing the operating component 6 to sink to a deeper depth during pressing, ensuring that the telescopic component 7 can smoothly reach the second position.

[0053] As shown in FIG. 2 and FIG. 5, the first guide angle 21 is arranged on the end face of the partition wall 17 close to the gear slot 16, and the second guide angle 22 is arranged on the partition wall 17 to match the first guide angle 21. The design of the matching guide angles between the telescopic piece 7 and the partition wall 17 improves the operation flexibility of the adjusting device. Even if the operating piece 6 is not completely pressed to the position, the matching of the first guide angle 21 and the second guide angle 22 can effectively guide the telescopic piece 7 to smoothly escape from the locked state of the gear slot 16. Once escaping from the locked state, the telescopic piece 7 can freely slide in the first direction in the clamping slot 15 to enter the position adjusting state.

[0054] The elastic piece (indicated in the figure) is arranged in the spring slot 18, one end of which abuts against the sliding piece 5, and the other end of which abuts against the bottom of the spring slot 18 to apply elastic force to the telescopic piece 7, so that the telescopic piece 7 can stop at the first position in the gear slot 16 when not subjected to external force.

[0055] The operation principle of the back width adjusting device of the embodiment is as follows:

[0056] Pressing the operating piece 6 in the second direction, the telescopic piece assembly is subjected to the thrust of the operating piece 6 and slides in the third direction or the extension direction thereof to the second position against the elastic force of the elastic piece; the sliding piece 5 assembly slides in the first direction and passes over the partition wall 17 to the adjacent gear slot 16 above for position adjustment, releasing the operating piece 6, the elastic force of the elastic piece promotes the telescopic piece 7 to slide in the direction perpendicular to the third direction or the extension direction thereof to the first position to make the telescopic piece 7 to enter the adjacent gear slot 16 for re-locking, and to push the operating piece 6 to reset.

[0057] In the embodiment, the telescopic piece assembly in the device cooperates with the gear slot 16 in the clamping slot 15 to realize the height adjustment of the backpack back width 2. The telescopic piece 7 is built inside the sliding piece 5 and clamps the slot wall of the clamping slot 15 at both ends, and is locked by the elastic force of the elastic piece when the telescopic piece 7 stops in the gear slot 16 to ensure the stability of the backpack back width 2. The user can easily press the operating piece 6 to make the telescopic piece assembly slide to the second position to release the locking state with the gear slot 16. This operation mode is simple and intuitive, and is convenient for the user to quickly adjust. When the sliding piece 5 assembly slides in the first direction and passes over the partition wall 17 to the adjacent gear slot 16 above, releasing the operating piece 6, the elastic force of the elastic piece will promote the telescopic piece 7 to slide to the first position to re-enter the adjacent gear slot 16 for locking. Since the gear slots 16 in the clamping slot 15 are uniformly and evenly distributed, the device can adapt to the body types and needs of different users and provide personalized adjustment of the backpack back width 2.

[0058] A backpack, as shown in Figure 8, comprises a backpack body 1, a back panel 2, shoulder straps 3, a connecting band and an adjusting device, and the adjusting device adopts the back panel adjusting device described above. The back panel 2 is movably connected with the backpack body 1, and the adjusting device is fixedly connected with the backpack body 1 for controlling the position of the back panel 2 on the backpack body 1; the shoulder straps 3 are fixedly connected with the backpack body 1 at one end and fixedly connected with the back panel 2 at the other end. Specifically, the adjusting device is built between the backpack body 1 and the back panel 2, and the operating member 6 and the cover plate 8 are exposed on the side of the back panel 2 away from the backpack body 1, and the fixing seat 4 is fixedly connected with the backpack body 1. By building the adjusting device between the backpack body 1 and the back panel 2, the protruding part outside the backpack is effectively reduced, so that the appearance of the backpack is more simple and beautiful. At the same time, the operating member 6 and the cover plate 8 are located on the outside of the back panel 2, which is convenient for the user to operate and adjust.

[0059] The connecting band (not labeled in the figure) is a U-shaped band, the bottom and both ends of the U-shaped band are fixedly connected with the back of the backpack body 1 near the back panel 2, the back panel 2 passes through both sides of the U-shaped band, and the back panel 2 and the backpack body 1 form a movable connection through the adjusting device. The U-shaped band is used as the connecting band, and the bottom and both ends of the U-shaped band are firmly connected with the back of the backpack body 1 near the back panel 2, which ensures the stable connection between the connecting band and the backpack body 1. This design not only provides stable support for the back panel 2, but also enables the back panel 2 to pass through both sides of the U-shaped band flexibly, so that the position of the back panel 2 on the backpack body 1 can be adjusted, and the adaptability of the backpack to users of different heights is enhanced. In this embodiment, the connecting band is made of aluminum strip material, which has sufficient hardness and toughness and is not easy to deform.

[0060] The side of the backpack body 1 near the back panel 2 is provided with a plurality of position marks, the back panel 2 is moved along the first direction and exposes the position marks to prompt the loosening of the operating member 6, so that the telescopic member assembly is parked at the first position for locking. The position marks provide the user with an intuitive visual prompt, which helps the user to know when to loosen the operating member 6 and understand the current position of the back panel 2 and whether further adjustment is needed. Specifically, two kinds of position marks are used in this embodiment, a first position mark 10 and a second position mark 11, wherein the first position mark 10 is located above the backpack body 1 near the back panel 2, the first position mark 10 is in the shape of a fish head, and S is written on it; the second position mark 11 is located below the backpack body 1 near the back panel 2, the second position mark 11 is in the shape of a fish tail, and M is written on it. When the user moves the position of the back panel 2 to the first direction and the fish head is completely exposed, the user is reminded that the adjustment is in place and the operating member 6 can be loosened; when the user moves the position of the back panel 2 to the first direction and the fish tail is completely exposed, the user is reminded that the adjustment is in place and the operating member 6 can be loosened.

[0061] In this embodiment, the backpack design is improved in flexibility and adaptability by introducing a back width adjusting device. The back width 2 is movably connected to the backpack body 1, and the position of the back width 2 on the backpack body 1 is controlled by the adjusting device, so that the backpack can be personalized according to different use scenarios and individual needs. One end of the shoulder strap 3 is firmly connected to the backpack body 1, and the other end is connected to the back width 2. By adjusting the position of the back width 2, the effective length and angle of the shoulder strap 3 can also be adjusted. This design is based on the principle of ergonomics, so that the backpack can closely fit the user's back and shoulders, providing the best carrying experience for children. In particular, for children of different heights, the backpack can be easily adjusted to ensure that the weight of the backpack is evenly distributed on the child's back and shoulders, effectively reducing the carrying pressure and preventing physical burden caused by improper backpacks.

[0062] The above description and embodiment of the description are used to explain the scope of protection of the present application, but do not constitute a limitation on the scope of protection of the present application. Through the inspiration of the present application or the above embodiment, those skilled in the art can obtain the modification, equivalent replacement or other improvement of the embodiment of the present application or one part of the technical features by combining with the common knowledge, the ordinary technical knowledge in the art and / or the prior art, through logical analysis, reasoning or limited test. It should be included in the protection scope of the present application.

Claims

1. A back panel adjustment device for adjusting the position of a back panel (2) in a backpack, characterized in that, The utility model relates to a kind of adjustable seat, including: Fixed seat (4), it is equipped with slide (12) extending along first direction, and its two side walls are equipped with clamping slot (15) extending along first direction;The clamping slot (15) is equipped with several evenly spaced gear grooves (16) along its extension direction, and interval wall (17) is equipped between adjacent gear grooves (16);The gear groove (16) is symmetrically distributed and one-to-one in the clamping slot (15) of the two sides of the fixed seat (4); Sliding member (5), its two ends are equipped with the clamping structure that can hold the slot wall of the clamping slot (15), to make the sliding member (5) slide in the clamping slot (15) along first direction;Meanwhile, the sliding member (5) and fixed seat (4) are slidably connected along slide (12) in first direction; Operating member (6), it is movably installed on the outside of the sliding member (5), and is suitable for pressing along second direction perpendicular to first direction; Telescopic component assembly, it is composed of two telescopic members (7), it is built-in in the sliding member (5) inside, and two telescopic members (7) respectively abut the two sides of operating member (6);Telescopic component assembly is suitable for third direction perpendicular to first direction and second direction or its extension direction and the sliding member (5) can be slidably connected;The two ends of the telescopic member (7) hold the slot wall of the clamping slot (15), and the extension end (19) that telescopic member (7) extends into clamping slot (15) is adapted to first position and is locked in gear groove (16) in gear groove (16);When the extension end (19) of the telescopic member (7) is at second position away from gear groove (16), telescopic member (7) enters the unlocking state, and the telescopic member (7) and the sliding member (5) are suitable for sliding together in the clamping slot (15) along first direction;Each telescopic member (7) is equipped with spring groove (18);And Elastic member, it is installed in the spring groove (18), and one end of its abuts the sliding member (5), and the other end abuts the groove bottom of the spring groove (18), to apply elastic force to the telescopic member (7), so that the telescopic member (7) can be parked in the first position in gear groove (16) when not subjected to external force; Press operating member (6) along second direction, and the telescopic component assembly is subjected to the thrust of operating member (6) and is slid to second position along third direction or its extension direction by overcoming the elastic force of the elastic member;The sliding member (5) assembly slides along first direction and passes through the interval wall (17) to the position adjustment above adjacent gear groove (16), and the elastic force of the elastic member promotes the telescopic member (7) to slide to first position along perpendicular third direction or its extension direction to make the extension end (19) of telescopic member (7) enter adjacent gear groove (16) and park to be relocked, and push operating member (6) reset.

2. A back panel adjustment device as claimed in claim 1, characterized in that The operating member (6) is equipped with first mating surface (29) and second mating surface (30) facing each other, and the first mating surface (29) and the second mating surface (30) are both inclined surfaces gradually close to each other along second direction, and the first mating surface (29) and the second mating surface (30) are respectively matched with the inclined surface of the contact surface of two telescopic members (7).

3. A back panel adjustment device as claimed in claim 2, characterised in that, The telescopic part (7) is provided with a sliding groove (23) extending along the third direction, and the sliding part (5) is provided with a sliding rod (24) slidingly matched with the sliding groove (23); the sliding rod (24) and the groove bottom of the sliding groove (23) are provided with a sliding space.

4. A back panel adjustment device as claimed in claim 3, characterised in that, The telescopic part (7) is provided with a first guide angle (21) at the end face of the interval wall (17) close to the gear groove (16), and the interval wall (17) is provided with a second guide angle (22) matched with the inclined surface of the first guide angle (21).

5. A back panel adjustment device as defined in claim 1, wherein, The sliding part (5) is further provided with a cover plate (8), the cover plate (8) is provided with a space matched with the operating part (6) to enable the operating part (6) to be pressed along the second direction; the cover plate (8) and the sliding part (5) are provided with a gap (20) to enable the corresponding part of the back width (2) to pass through and be placed in the gap (20).

6. A back panel adjustment device as defined in claim 5, wherein, The middle part of the sliding channel (12) of the fixed seat (4) is provided with a groove (13) recessed to the inside of the fixed seat (4), and the groove (13) is communicated with the sliding channel (12); the sliding part (5) is provided with a sliding end (14) slidingly matched with the groove (13).

7. A backpack characterized in that, The back width adjusting device comprises a backpack body (1), a back width (2), a shoulder strap (3) and an adjusting device, the adjusting device is a back width adjusting device as claimed in any one of claims 1 to 6; the back width (2) is movably connected with the backpack body (1), the adjusting device is fixedly connected with the backpack body (1) for controlling the position of the back width (2) on the backpack body (1); one end of the shoulder strap (3) is fixedly connected with the backpack body (1), and the other end is fixedly connected with the back width (2).

8. A backpack as claimed in claim 7, characterized in that Further comprising a connecting belt, the connecting belt is a U-shaped belt, the bottom and both ends of the U-shaped belt are fixedly connected with the back of the backpack body (1) close to the back width (2), the back width (2) passes through both sides of the U-shaped belt and forms a movable connection with the backpack body (1) through the adjusting device.

9. A backpack as claimed in claim 8, characterized in that The adjusting device is built-in between the backpack body (1) and the back width (2), and the operating part (6) and the cover plate (8) are exposed on the side of the back width (2) away from the backpack body (1), and the fixed seat (4) is fixedly connected with the backpack body (1).

10. A backpack as claimed in claim 9, characterized in that The side of the backpack body (1) close to the back width (2) is provided with a plurality of position marks, the back width (2) is moved along the first direction and exposes the position marks to prompt the loosening of the operating part (6) and make the telescopic part assembly stop at the first position for locking.

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