Adjustable backpack unit

Abstract

The utility model discloses an adjustable backpack unit. The adjustable backpack unit comprises a strap part, a waistband part and an adjusting assembly, the strap part is suitable for being worn on the shoulders of a user, and the waistband part is suitable for being worn on the waist of the user; the two ends of the adjusting assembly are connected to the back of the waistband part and the back of the strap part respectively, so that the adjusting assembly adjusts the distance between the strap part and the waistband part by adjusting the matching length of the adjusting assembly. The backpack has the beneficial effects that the backpack unit is designed in a split mode to obtain the strap part and the waistband part, the strap part and the waistband part are connected through the adjusting assembly, and then the distance between the strap part and the waistband part can be changed by adjusting the matching length of the adjusting assembly according to different body types of users. Compared with a traditional integrated backpack unit, the backpack unit can adapt to users of any body type, and the height size adjusting process is simple and easy to operate.

Description

Technical Field

[0001] The present application relates to the technical field of children's products, and in particular to an adjustable carrying unit. Background Art

[0002] For families with children, a good travel device will provide great convenience for children when traveling. Existing travel devices for children include child carrying devices and child mobility devices. Both child carrying devices and child mobility devices include a carrying unit and a bearing unit; the carrying unit can be worn on the user, and the bearing unit is used for children to ride. For a child carrying device, the bearing unit is generally arranged at the front or rear of the carrying unit; for a child mobility device, the bearing unit is generally connected to the carrying unit through a cantilever support.

[0003] When the existing child carrying device or child mobility device is used, the carrying unit is generally arranged in an integrated manner and has a fixed design size, which makes it difficult for the carrying unit to adapt to users of all body sizes. Therefore, it is urgently necessary to improve the existing carrying unit. Utility Model Content

[0004] One of the purposes of the present application is to provide an adjustable backpack unit that can solve at least one of the defects in the above-mentioned background technology.

[0005] In order to achieve at least one of the above-mentioned purposes, the technical solution adopted in the present application is: an adjustable carrying unit, comprising a shoulder strap portion, a waist belt portion and an adjustment component; the shoulder strap portion is suitable for being worn on the user's shoulders, and the waist belt portion is suitable for being worn on the user's waist; the two ends of the adjustment component are respectively connected to the back of the waist belt portion and the shoulder strap portion, so that the adjustment component can adjust the distance between the shoulder strap portion and the waist belt portion by adjusting its own matching length.

[0006] Preferably, the adjustment component includes a limiting component and an adjustment plate; the adjustment plate is fixed to the back of the shoulder strap portion or the waist belt portion through a first end, and the limiting component is arranged on the waist belt portion or the back of the shoulder strap portion to which the adjustment plate is not fixed, and then the adjustment plate is limitedly cooperated with the limiting component through different positions of the second end to adjust the distance between the waist belt portion and the shoulder strap portion.

[0007] Preferably, the adjustment component includes a pair of limit components and an adjustment plate; the limit components are respectively arranged on the backs of the waist belt part and the shoulder strap part, and the adjustment plate is respectively limited and matched with the two limit components at both ends, and then the adjustment plate adjusts the distance between the shoulder strap part and the waist belt part by adjusting the matching position of at least one end with the corresponding limit component.

[0008] Preferably, the limiting assembly includes a support plate and an adjusting member; the support plate is fixedly arranged, and the adjusting plate slides through the support plate, so that the adjusting plate can adjust the distance between the shoulder strap part and the waist belt part by sliding relative to the support plate; the adjusting member is installed on the support plate, and after the distance adjustment is completed, the adjusting member is suitable for limiting cooperation with the adjusting plate by moving.

[0009] Preferably, a vertically penetrating guide groove is provided on the support plate, and the adjustment plate is slidably matched with the guide groove; the adjustment member extends into the guide groove at the outer side of the support plate along a direction perpendicular to the end face of the adjustment plate to limit the adjustment plate.

[0010] Preferably, the adjusting member and the adjusting plate are frictionally abutted against each other to achieve position limiting cooperation; or, the adjusting member and the adjusting plate are snap-fitted to achieve position limiting cooperation; or, the adjusting member and the adjusting plate are plug-fitted to achieve position limiting cooperation.

[0011] Preferably, the adjustment plate is provided with a plurality of limit holes at intervals along the length direction; the adjustment member is threadedly engaged with the support plate through a screw; when adjusting the spacing, the end of the screw is spaced from the adjustment plate; after the spacing adjustment is completed, the adjustment member is suitable for driving the end of the screw to extend into the corresponding limit hole for limit engagement by screwing.

[0012] Preferably, the adjusting member is threadedly engaged with the support plate via a screw; when adjusting the spacing, the end of the screw is spaced from the adjusting plate; after the spacing adjustment is completed, the adjusting member is suitable for driving the end of the screw to abut against the adjusting plate by screwing.

[0013] Preferably, a mounting hole vertically connected to the guide groove is provided in the middle of the support plate; the limiting assembly also includes a threaded sleeve, which is installed in the mounting hole and fixedly connected to the support plate; the adjusting member is suitable for threaded cooperation with the threaded sleeve through the screw rod.

[0014] Preferably, the limit assembly also includes a limit plate, which is slidably installed on the support plate along the moving direction of the adjusting member; when the spacing is adjusted, there is a spacing or loose contact between the limit plate and the adjusting plate; when the spacing adjustment is completed, the adjusting member is suitable for driving the limit plate to press against the adjusting plate through the end of the screw.

[0015] Preferably, the limiting assembly further includes a spring, and the limiting plate is elastically slidably connected to the support plate via the spring, so that when the spacing is adjusted, the limiting plate maintains a distance from the adjustment plate under the elastic force of the spring.

[0016] Preferably, a slide groove is provided on the support plate, and the limit plate is installed in the slide groove by sliding on the side; the spring is located in the slide groove and is respectively abutted against the limit plate and the bottom of the slide groove through two ends.

[0017] Preferably, a slide groove is provided on the support plate, and a pair of guide rods are symmetrically provided on both sides of the slide groove; the limit plate is slidably matched with the guide rods in the slide groove through sliding holes provided on both sides; the springs are a pair and are respectively sleeved on the guide rods.

[0018] Preferably, the limiting assembly includes a pair of bolts, and the bolts are symmetrically screwed on both sides of the slide groove through screw rod sections; the bolts pass through a bare rod section to form the guide rod.

[0019] Preferably, the limiting assembly further includes a top sleeve; the top sleeve is threadedly connected to the end of the screw rod, and then the screw rod cooperates with the limiting plate through the top sleeve.

[0020] Preferably, the adjustment plate is provided with a plurality of limit grooves at intervals along the length direction; a limit block is provided on the end face of the limit plate, and the limit plate is suitable for being snap-fitted with the corresponding limit grooves through the limit block.

[0021] Preferably, the shoulder strap portion includes a first back panel and a pair of shoulder straps; the first back panel is made of hard material, and the limiting assembly is suitable for being installed on the back of the first back panel; the shoulder straps are made of flexible material, and the two shoulder straps are connected to both sides of the first back panel through the first end, and the front parts of the two shoulder straps are connected by a first strap with adjustable length.

[0022] Preferably, the belt portion includes a second back plate and a pair of waist protectors; the second back plate is made of hard material, and the limiting assembly is suitable for being installed on the back of the second back plate; the waist protectors are made of flexible material, and the two waist protectors are connected to the two sides of the second back plate through the rear ends, and the front ends of the two waist protectors are connected by a third strap with adjustable length.

[0023] Preferably, the shoulder straps are connected to both sides of the upper part of the first back panel, the second ends of the shoulder straps are penetrated by second straps, the first ends of the second straps are connected to the lower part of the corresponding side of the first back panel, the second ends of the second straps are connected to the middle part of the waist protector on the corresponding side, and the length of the second straps is adjustable.

[0024] Compared with the prior art, the beneficial effects of this application are:

[0025] The backpack unit is designed to be split into a shoulder strap portion and a waist belt portion, and the shoulder strap portion and the waist belt portion are connected by an adjustment component, and then the distance between the shoulder strap portion and the waist belt portion can be changed by adjusting the matching length of the adjustment component according to the different body shapes of the users. Compared with the traditional integrated backpack unit, the present application can adapt to users of any body shape, and the height adjustment process is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the axial structure of the utility model in the front view direction.

[0027] Figure 2 It is a schematic diagram of the axial structure of the utility model in the rearward viewing direction.

[0028] Figure 3 It is a structural schematic diagram of the adjustment plate in the utility model.

[0029] Figure 4 It is a schematic diagram of the exploded state of the limit assembly in the utility model.

[0030] Figure 5 It is a structural schematic diagram of the support plate in the utility model.

[0031] Figure 6 It is a structural schematic diagram of the limiting plate in the utility model.

[0032] Figure 7 It is a schematic diagram of the partial matching structure of the limit assembly and the adjustment plate in the top view of the utility model.

[0033] Figure 8 It is a schematic diagram of the partial matching structure of the limit assembly and the adjustment plate in the side view direction of the utility model.

[0034] Fig. 9 The utility model is a schematic diagram of the connection structure of the shoulder strap part and the waist belt part in the front view direction.

[0035] Fig.10 It is a schematic diagram of the axial structure of the seat body of the utility model along the rearward direction.

[0036] In the figure: shoulder strap part 1, first back plate 11, shoulder strap 12, first strap 13, second strap 14, waist belt part 2, second back plate 21, waist protector 22, third strap 23, adjustment component 3, adjustment plate 31, limiting groove 310, connecting hole 311, positioning hole 312, limiting component 32, support plate 321, guide groove 3210, slide groove 3211, mounting hole 3212, limiting plate 322, limiting block 3220, slide hole 3221, adjusting member 323, bolt 324, spring 325, threaded sleeve 326, top sleeve 327, fixing plate 400. DETAILED DESCRIPTION

[0037] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0038] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0039] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0040] Embodiment 1:

[0041] like Figure 1 and Figure 2 As shown, an adjustable carrying unit includes a shoulder strap portion 1, a waist belt portion 2, and an adjustment component 3. The shoulder strap portion 1 can be worn on the user's shoulders, and the waist belt portion 2 can be worn on the user's waist; the two ends of the adjustment component 3 are respectively connected to the back of the waist belt portion 2 and the shoulder strap portion 1, so that the waist belt portion 2 and the shoulder strap portion 1 can be integrally connected through the adjustment component 3. When it is necessary to adjust the distance between the waist belt portion 2 and the shoulder strap portion 1 to accommodate users of different body shapes, the distance between the shoulder strap portion 1 and the waist belt portion 2 can be changed by adjusting the matching length of the adjustment component 3 itself.

[0042] It should be known that when the carrying unit is worn on the user, it is generally supported by the user's shoulders and waist. Therefore, the present embodiment designs the traditional carrying unit into a separate shoulder strap portion 1 and waist belt portion 2; in order to ensure that the force can be transmitted between the shoulder strap portion 1 and the waist belt portion 2, the shoulder strap portion 1 and the waist belt portion 2 can be connected at the back through the adjustment component 3. The user's body shape can be reflected by the distance from the shoulder to the waist. Therefore, by setting the matching length of the adjustment component 3 to be adjustable, when facing users of different body shapes, by adjusting the matching length of the adjustment component 3, the distance between the shoulder strap portion 1 and the waist belt portion 2 can be changed to adapt to users of different body shapes.

[0043] In this embodiment, Figure 2As shown, the adjustment component 3 includes a limit component 32 and an adjustment plate 31 ; there are mainly two specific configuration methods for the limit component 32 and the adjustment plate 31 .

[0044] The first type: there is only one limiting assembly 32; the adjustment plate 31 is fixed to the back of the shoulder strap portion 1 or the waist belt portion 2 through the first end, and the limiting assembly 32 is arranged on the back of the waist belt portion 2 or the shoulder strap portion 1 to which the adjustment plate 31 is not fixed. Then, the adjustment plate 31 can connect the waist belt portion 2 with the shoulder strap portion 1 through the limiting cooperation with the limiting assembly 32 at the second end; and the spacing between the waist belt portion 2 and the shoulder strap portion 1 can be adjusted by limiting cooperation with the limiting assembly 32 at different positions of the second end of the adjustment plate 31.

[0045] The second type: Figure 2 As shown, the number of the limiting components 32 is a pair, and the two limiting components 32 are respectively arranged on the back of the waist belt portion 2 and the back of the back strap portion 1. The adjustment plate 31 can be respectively limited and matched with the two limiting components 32 at both ends to achieve the connection between the waist belt portion 2 and the back strap portion 1. And by adjusting the matching position of at least one end of the adjustment plate 31 and the corresponding limiting component 32, the distance between the back strap portion 1 and the waist belt portion 2 can be changed.

[0046] It is understandable that both of the above two settings can meet the requirements of this application. For the first one, if the adjustment plate 31 is fixed to the back of the shoulder strap portion 1 through the first end, when adjusting the spacing between the shoulder strap portion 1 and the waist belt portion 2, the second end of the adjustment plate 31 may extend downward beyond the waist belt portion 2, and then when the user walks, the second end of the adjustment plate 31 may interfere with the user's walking. Therefore, for the first setting, this embodiment preferably fixes the adjustment plate 31 to the back of the waist belt portion 2 through the first end. There are many ways to fix the adjustment plate 31 to the back of the waist belt portion 2, and the most common ones are welding or fastening connection.

[0047] Specifically, take fastening connection as an example, Figure 3 As shown, the first end of the adjustment plate 31 is provided with a connection hole 311 and at least one positioning hole 312; the adjustment plate 31 can be fixed to the back of the waist belt portion 2 by fasteners passing through the connection hole 311, and the positioning hole 312 can cooperate with the back of the waist belt portion 2 through the fasteners to prevent the adjustment plate 31 from rotating around the fasteners. The height of the positioning hole 312 is higher than the connection hole 311, thereby increasing the connection area of ​​the adjustment plate 31 to improve the connection stability. In order to further improve the installation stability of the adjustment plate 31, the positioning holes 312 can be multiple pairs, and the two positioning holes 312 of each pair are arranged on both sides of the extension direction of the adjustment plate 31, and the multiple pairs of positioning holes 312 are arranged at intervals along the extension direction of the adjustment plate 31. For example, as shown in 3, there are three pairs of positioning holes 312.

[0048] It can also be understood that the first setting mode and the second setting mode mentioned above can be used simultaneously for the adjustment component 3. That is, the back of the waist belt part 2 and the back of the shoulder strap part 1 are both provided with a limit component 32, the first end of the adjustment plate 31 is fixed to the back of the waist belt part 2 and cooperates with the limit component 32, and the second end of the adjustment plate 31 cooperates with the limit component 32 on the back of the shoulder strap part 1. Therefore, the limit component 32 located at the waist belt part 2 can always limit the adjustment plate 31 to ensure the installation stability of the adjustment plate 31, and when the adjustment plate 31 is loosened from the back of the waist belt part 2, or when the installation structure fails, the limit component 32 located at the back of the waist belt part 2 can cooperate with the limit component 32 on the back of the shoulder strap part 1 to form the second setting mode mentioned above to limit the adjustment plate 31.

[0049] In this embodiment, Figure 4 , Figure 7 and Figure 8 As shown, the limiting assembly 32 includes a support plate 321 and an adjusting member 323. The support plate 321 is fixedly arranged on the back of the waist belt portion 2 or the back strap portion 1; the adjusting plate 31 slides through the support plate 321, so that the adjusting plate 31 can adjust the distance between the back strap portion 1 and the waist belt portion 2 by sliding relative to the support plate 321. The adjusting member 323 is installed on the support plate 321, and after the distance between the back strap portion 1 and the waist belt portion 2 is adjusted, the adjusting member 323 can be limited by moving along the support plate 321 and cooperate with the adjusting plate 31.

[0050] It should be known that there are many specific structures for the adjustment member 323 to be installed on the support plate 321, and it is sufficient that the adjustment member 323 can be limitedly matched with the adjustment plate 31. For example, the adjustment member 323 can be matched with the side of the adjustment plate 31, and the adjustment member 323 can also be limitedly matched with the end face of the adjustment plate 31. In order to improve the limited matching effect of the adjustment member 323 on the adjustment plate 31, the present embodiment preferably adopts the limited matching of the adjustment member 323 and the end face of the adjustment plate 31.

[0051] Specifically, Figure 5 , Figure 7 and Figure 8 As shown, a vertically penetrating guide groove 3210 is provided on the support plate 321, and the adjustment plate 31 can slide relative to each other along the guide groove 3210. The moving direction of the adjustment member 323 is vertical and directly opposite to the center of the guide groove 3210, so that the adjustment member 323 can move along the end surface direction of the vertical adjustment plate 31 on the outer side of the support plate 321, and then the adjustment member 323 can extend into the guide groove 3210 and cooperate with the adjustment plate 31 for limiting.

[0052] In this embodiment, the adjusting member 323 and the adjusting plate 31 are frictionally opposed to each other for limiting cooperation; that is, the adjusting member 323 is pressed against the end face of the adjusting plate 31, and then the friction force generated by extrusion along the length direction of the adjusting plate 31 is used to lock the sliding of the adjusting plate 31 relative to the guide groove 3210.

[0053] Specifically, Figure 4 , Figure 7 and Figure 8 As shown, the adjusting member 323 is threadedly engaged with the support plate 321 through the screw. Therefore, when adjusting the spacing between the shoulder strap portion 1 and the waist belt portion 2, the adjusting member 323 can drive the screw to move axially away from the adjustment plate 31 through the screw engagement with the support plate 321, thereby creating a gap between the adjustment plate 31 and the end of the screw to avoid the screw from interfering with the sliding of the adjustment plate 31. After the spacing between the shoulder strap portion 1 and the waist belt portion 2 is adjusted, the adjusting member 323 can drive the screw to approach the adjustment plate 31 through the screw engagement with the support plate 321 until the end of the screw abuts against the adjustment plate 31.

[0054] It should be known that there are multiple ways for the adjustment member 323 to move axially along the support plate 321. In this embodiment, a threaded connection is preferably used, so that after the screw rod abuts against the adjustment plate 31, the self-locking of the thread can ensure the locking stability of the screw rod on the adjustment plate 31.

[0055] In this embodiment, Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, a mounting hole 3212 is provided in the middle of the support plate 321, which is vertically connected to the guide groove 3210. The limit assembly 32 also includes a threaded sleeve 326, which is installed in the mounting hole 3212 and fixedly connected to the support plate 321; and the adjusting member 323 can be threadedly matched with the threaded sleeve 326 through a screw.

[0056] It is understandable that, due to the relatively complex structure of the support plate 321, it may be inconvenient to process the threads. Furthermore, if the threads are directly processed on the support plate 321, when the threads are broken, the entire support plate 321 will be scrapped, which will increase the production cost. However, in this embodiment, by providing an additional thread sleeve 326, the thread processing can be facilitated, and the thread sleeve 326 and the support plate 321 are detachable structures. When the threads are damaged, the thread sleeve 326 can be directly replaced, so that it is convenient to process and replace, and the production cost can be appropriately reduced.

[0057] Meanwhile, there are many specific connection modes between the threaded sleeve 326 and the support plate 321, such as interference fit or transition fit between the threaded sleeve 326 and the mounting hole 3212, or fastening connection between the threaded sleeve 326 and the support plate 321 by fasteners. In order to ensure the installation stability and convenience of replacement of the threaded sleeve 326, in this embodiment, the threaded sleeve 326 and the support plate 321 are preferably connected by fasteners.

[0058] In this embodiment, Figure 4 , Figure 7 and Figure 8 As shown, the limiting assembly 32 also includes a limiting plate 322, which is slidably mounted on the support plate 321 along the moving direction of the adjusting member 323. When the spacing between the shoulder strap portion 1 and the waist belt portion 2 is adjusted, the limiting plate 322 can be spaced apart from or in loose contact with the adjusting plate 31. After the spacing between the shoulder strap portion 1 and the waist belt portion 2 is adjusted, the adjusting member 323 can drive the limiting plate 322 to move toward the end surface of the adjusting plate 31 by squeezing the end of the screw until the limiting plate 322 abuts against the adjusting plate 31.

[0059] It is understandable that, since the contact area between the end face of the screw and the adjustment plate 31 is relatively small, the effect of the screw on the limiting locking of the adjustment plate 31 may be poor. Therefore, by driving the limiting plate 322 to contact the adjustment plate 31 with the screw, the contact area with the adjustment plate 31 can be effectively increased, thereby improving the locking effect of the adjustment member 323 on the adjustment plate 31. In addition, when the adjustment plate 31 is slidably adjusted, the limiting plate 322 can be spaced from the adjustment plate 31 or in contact; if the limiting plate 322 is in contact with the adjustment plate 31, the screw and the limiting plate 322 are in a non-contact state at this time, so as to ensure that the limiting plate 322 has no squeezing force on the adjustment plate 31, thereby avoiding the interference of the limiting plate 322 with the sliding of the adjustment plate 31. In order to ensure that the sliding adjustment of the adjustment plate 31 can be carried out smoothly, in this embodiment, when the adjustment plate 31 is slid, it is preferred to space the limiting plate 322 from the adjustment plate 31.

[0060] Specifically, Figure 4 , Figure 7 and Figure 8 As shown, the limiting assembly 32 further includes a spring 325, and the limiting plate 322 is elastically slidably connected to the support plate 321 through the spring 325. Therefore, when the distance between the shoulder strap portion 1 and the waist belt portion 2 is adjusted, the limiting plate 322 can maintain a distance from the adjustment plate 31 under the elastic force of the spring 325. After the distance between the shoulder strap portion 1 and the waist belt portion 2 is adjusted, the limiting plate 322 can drive the spring 325 to deform and move under the extrusion of the screw until the limiting plate 322 and the adjustment plate 31 are abutted and matched.

[0061] It should be known that when the limit plate 322 is against the adjustment plate 31, the spring 325 can be tensilely deformed or compressively deformed, and the specific deformation state can be determined according to the installation position of the spring 325. It is only necessary to ensure that after the limit plate 322 loses the extrusion of the screw, the limit plate 322 can move away from the adjustment plate 31 under the restoring elastic force of the spring 325.

[0062] In this embodiment, there are multiple sliding installation methods for the limiting plate 322, including but not limited to the following two.

[0063] Method 1: If Figure 5 and Figure 7 As shown, a slide groove 3211 is provided on the support plate 321, and the limiting plate 322 is installed in the slide groove 3211 by sliding on the side. At this time, the spring 325 is located in the slide groove 3211 and abuts against the limiting plate 322 and the bottom of the slide groove 3211 through both ends. Then, when adjusting the spacing between the shoulder strap part 1 and the waist belt part 2, the limiting plate 322 can be located in the slide groove 3211 under the elastic force of the spring 325 to ensure that the spacing between the limiting plate 322 and the adjustment plate 31 is maintained. After the spacing adjustment between the shoulder strap part 1 and the waist belt part 2 is completed, the limiting plate 322 can stretch the spring 325 under the extrusion of the screw and move along the slide groove 3211 in the direction close to the adjustment plate 31 until the limiting plate 322 partially extends out of the slide groove 3211 and abuts against the adjustment plate 31.

[0064] Method 2: If Figure 5 and Figure 7 As shown, a slide groove 3211 is provided on the support plate 321, and a pair of guide rods are symmetrically provided on both sides of the slide groove 3211 of the support rod 321; the limit plate 322 is located in the slide groove 3211 and slides with the corresponding guide rod through the slide holes 3221 provided on both sides. At this time, the spring 325 is a pair and is respectively sleeved on the guide rod, and the two ends of the spring 325 are respectively against the limit plate 322 and the bottom of the slide groove 3211. Then, when the spacing between the shoulder strap part 1 and the waist belt part 2 is adjusted, the limit plate 322 can be located in the slide groove 3211 under the elastic force of the spring 325 to ensure that the limit plate 322 and the adjustment plate 31 are kept at a distance. After the spacing between the shoulder strap part 1 and the waist belt part 2 is adjusted, the limit plate 322 can stretch the spring 325 under the extrusion of the screw and move along the guide rod toward the direction close to the adjustment plate 31 until the limit plate 322 partially extends out of the slide groove 3211 and is against the adjustment plate 31.

[0065] It is understandable that both of the above-mentioned methods can meet the requirements of this application. Compared with method 1, the slide groove 3211 in method 2 can slide with the side of the limit plate 322, or can be spaced from the side of the limit plate 322; that is, in method 2, the function of the slide groove 3211 is mainly to provide an escape space for the interval between the limit plate 322 and the adjustment plate 31. In order to ensure that the spring 325 can be stably deformed during the movement of the limit plate 322, the above-mentioned method 2 is preferably used for the sliding installation method of the limit plate 322 in this embodiment.

[0066] Specifically, there are many specific structures of the guide rod, which can be directly fixedly connected to the support plate 321 through a polished rod; Figure 4 and Figure 7 As shown, the limiting assembly 32 includes a pair of bolts 324. The bolts 324 are symmetrically screwed on both sides of the slide slot 3211 through screw rod sections, and the corresponding polished rod sections on the bolts 324 can form the required guide rods.

[0067] In this embodiment, Figure 4 , Figure 7 and Figure 8 As shown, the limiting assembly 32 also includes a top sleeve 327. The top sleeve 327 is threadedly connected to the end of the screw, and then the screw is extruded and matched with the limiting plate 322 through the top sleeve 327, which can effectively reduce the wear caused by direct contact and extrusion between the end of the screw and the limiting plate 322.

[0068] In this embodiment, Fig. 9 and Fig.10 As shown, the shoulder strap portion 1 includes a first back plate 11 and a pair of shoulder straps 12. The first back plate 11 is made of hard material, and the limiting assembly 32 can be installed on the back of the first back plate 11, so that the hard first back plate 11 can provide good support for the limiting assembly 32. The shoulder straps 12 are made of flexible material, and the two shoulder straps 12 are connected to the two sides of the first back plate 11 through the first end, and the front parts of the two shoulder straps 12 are connected by a first strap 13 with adjustable length to ensure that the two shoulder straps 12 are tightly attached to the user's shoulders through the restraint of the first strap 13 during wearing; and the length of the first strap 13 can be adjusted according to the user's body shape.

[0069] In this embodiment, Fig. 9 and Fig.10As shown, the waist belt portion 2 includes a second back plate 21 and a pair of waist protectors 22. The second back plate 21 is made of hard material, and the limiting component 32 can be installed on the back of the second back plate 21, so that the hard second back plate 21 can provide good support for the limiting component 32. The waist protectors 22 are made of flexible material, and the two waist protectors 22 are connected to the two sides of the second back plate 21 through the rear end, and the front ends of the two waist protectors 22 are connected through the third strap 23 with adjustable length to ensure that during the wearing process, the two waist protectors 22 can be tightly attached to the user's waist through the restraint of the third strap 23; and the length of the third strap 23 can be adjusted according to the user's body shape.

[0070] It is understandable that the hard first back plate 11 and the second back plate 21 can form a good supporting contact with the user's back, and the gravity of the carrying unit can also be well transmitted to the user through the first back plate 11 and the second back plate 21 to ensure the carrying stability of the carrying unit. At the same time, the hard first back plate 11 and the second back plate 21 can also facilitate the installation of the limit assembly 32; specifically, as Figure 7 , Figure 8 and Fig.10 As shown, the first back plate 11 and the second back plate 21 are fixedly connected to the support plate 321 on the limiting assembly 32 via a fixing plate 400 at the back.

[0071] In this embodiment, Fig. 9 and Fig.10 As shown, the shoulder straps 12 are connected to both sides of the upper part of the first back plate 11, and the second ends of the shoulder straps 12 are penetrated by the second straps 14. The first end of the second straps 14 is connected to the lower part of the corresponding side of the first back plate 11, and the second end of the second straps 14 is connected to the middle part of the waist guard 22 on the corresponding side. The length of the second straps 14 is adjustable. The waist belt part 2 and the back strap part 1 can be connected at the front of the user through the second straps 14, so as to cooperate with the adjustment component 3, and the wearing stability of the carrying unit can be effectively improved.

[0072] It is understandable that if the shoulder strap 1 and the waist belt 2 are connected only through the adjustment component 3 on the back, when the carrying unit is stressed, the shoulder strap 1 and the waist belt 2 connected through the adjustment component 3 will have a tendency to move backwards, which may cause the shoulder strap 12 and the waist protector 22 to tighten the user, resulting in a poor wearing experience for the user. However, by connecting the shoulder strap 12 and the waist protector 22 at the front of the user through the second strap 14, the tendency of the shoulder strap 1 and the waist belt 2 to move backwards can be suppressed to a certain extent, thereby improving the wearing experience of the user. In addition, the length of the second strap 14 is adjustable to accommodate users of different body shapes.

[0073] Embodiment 2:

[0074] Compared with the first embodiment, the difference of this embodiment is that the adjusting member 323 and the adjusting plate 31 are engaged with each other by snapping to achieve position limiting cooperation.

[0075] Specifically, Figure 3 As shown, the adjustment plate 31 is provided with a plurality of limit grooves 310 at intervals along the length direction. When adjusting the distance between the shoulder strap portion 1 and the waist belt portion 2, the screw can maintain a distance from the adjustment plate 31. After the distance between the shoulder strap portion 1 and the waist belt portion 2 is adjusted, the screw can be moved toward the adjustment plate 31 by screwing, until the end of the screw is engaged with the corresponding limit groove 310 on the adjustment plate 31 to achieve sliding locking of the adjustment plate 31.

[0076] In this embodiment, Figures 6 to 8 As shown, the limit assembly 32 includes a limit plate 322, and the limit plate 322 is slidably mounted on the support plate 321. The specific sliding installation method of the limit plate 322 is the same as that of the first embodiment. A limit block 3220 is provided on the side of the limit plate 322 close to the adjustment plate 31. When the spacing between the shoulder strap portion 1 and the waist belt portion 2 is adjusted, the limit block 3220 maintains a spacing with the adjustment plate 31; when the spacing between the shoulder strap portion 1 and the waist belt portion 2 is adjusted, the limit plate 322 can move toward the direction close to the adjustment plate 31 under the extrusion of the screw until the limit block 3220 is engaged with the corresponding limit groove 310 on the adjustment plate 31.

[0077] It is understandable that if the screw rod is directly engaged with the limit groove 310 through the end, it may cause greater wear to the structure of the limit groove 310, thereby affecting the locking effect of the adjustment plate 31. In this embodiment, the screw rod drives the limit plate 322 to engage with the limit groove 310 through the limit block 3220 adapted to the structure of the limit groove 310, which can effectively reduce the wear of the limit groove 310 and improve the locking effect of the adjustment plate 31.

[0078] Specifically, the cross-sectional shape of the limiting groove 310 can be an arc shape, a V shape, a rectangle, a trapezoid or the like.

[0079] Embodiment three:

[0080] Compared with the first embodiment and the second embodiment, the difference of this embodiment is that the adjusting member 323 and the adjusting plate 31 are plugged together to achieve position limiting cooperation.

[0081] Specifically, the adjustment plate 31 is provided with a plurality of limiting holes at intervals along the length direction; the adjustment member 323 is threadedly matched with the support plate 321 through a screw. When adjusting the spacing between the shoulder strap portion 1 and the waist belt portion 2, the end of the screw can be spaced from the adjustment plate 31 so that the adjustment plate 31 can slide smoothly. After the spacing between the shoulder strap portion 1 and the waist belt portion 2 is adjusted, the adjustment member 323 can be screwed together to drive the end of the screw to extend into the corresponding limiting hole, and then the screw can limit and lock the sliding of the adjustment plate 31.

[0082] It is understandable that the limiting hole can be a through hole or a threaded hole. If the limiting hole is a through hole, the end of the screw rod can be a bare rod section, and then the sliding locking of the adjustment plate 31 is achieved by plugging the bare rod section into the through hole; the end of the screw rod can also be plugged into the through hole through a threaded plug sleeve to achieve the sliding locking of the adjustment plate 31. If the limiting hole is a threaded hole, the screw rod can be screwed into the limiting hole to achieve the sliding locking of the adjustment plate 31.

[0083] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. An adjustable backpack unit, characterized in that: The utility model comprises a shoulder strap part, a waist belt part and an adjusting component; the shoulder strap part is suitable for being worn on the shoulders of a user; the waist belt part is suitable for being worn on the waist of a user; the adjusting component is suitable for being connected to the back of the shoulder strap part and the waist belt part through two ends respectively, so that the adjusting component can adjust the distance between the shoulder strap part and the waist belt part by adjusting its own matching length; The adjustment component includes a limit assembly and an adjustment plate; The adjusting plate is fixed to the back of the shoulder strap or waist belt through the first end, the limiting assembly is arranged on the waist belt or the back of the shoulder strap where the adjusting plate is not fixed, and then the adjusting plate is limitedly matched with the limiting assembly through different positions of the second end to adjust the distance between the waist belt and the shoulder strap; Alternatively, the limiting components are respectively arranged on the back of the waist belt part and the shoulder strap part, and the adjustment plate is respectively limited and matched with the two limiting components at both ends, and then the adjustment plate adjusts the distance between the shoulder strap part and the waist belt part by adjusting the matching position of at least one end with the corresponding limiting component.

2. The adjustable backpack unit according to claim 1, characterized in that: The limiting assembly includes a support plate and an adjusting member; the support plate is fixedly arranged, and the adjusting plate slides through the support plate, so that the adjusting plate can adjust the distance between the shoulder strap part and the waist belt part by sliding relative to the support plate; the adjusting member is installed on the support plate, and after the distance adjustment is completed, the adjusting member is suitable for limiting cooperation with the adjusting plate by moving.

3. The adjustable backpack unit according to claim 2, characterized in that: The support plate is provided with a vertically penetrating guide groove, and the adjustment plate is slidably matched with the guide groove; the adjustment member is extended into the guide groove along the outer side of the support plate in a direction perpendicular to the end face of the adjustment plate to limit the adjustment plate.

4. The adjustable backpack unit according to claim 3, characterized in that: The adjusting member and the adjusting plate are frictionally abutted against each other to perform position limiting cooperation; Alternatively, the adjusting member and the adjusting plate are engaged with each other by snapping together to achieve position limiting cooperation; Alternatively, the adjusting member and the adjusting plate are plugged into each other to perform position limiting cooperation.

5. The adjustable backpack unit according to claim 4, characterized in that: The adjustment plate is provided with a plurality of limiting holes at intervals along the length direction; the adjustment member is threadedly engaged with the support plate via a screw; when adjusting the spacing, the end of the screw is spaced from the adjustment plate; after the spacing adjustment is completed, the adjustment member is suitable for driving the end of the screw to extend into the corresponding limiting hole for limiting engagement by screwing.

6. The adjustable backpack unit according to claim 4, characterized in that: The adjusting member is threadedly engaged with the support plate via a screw rod; when adjusting the spacing, the end of the screw rod is spaced from the adjusting plate; after the spacing adjustment is completed, the adjusting member is suitable for driving the end of the screw rod to abut against the adjusting plate by screwing.

7. The adjustable backpack unit according to claim 6, characterized in that: A mounting hole vertically connected to the guide groove is provided in the middle of the support plate; the limiting assembly also includes a threaded sleeve, which is installed in the mounting hole and fixedly connected to the support plate; the adjusting member is suitable for threaded cooperation with the threaded sleeve through the screw rod.

8. The adjustable backpack unit according to claim 6, characterized in that: The limiting assembly further includes a limiting plate, which is slidably mounted on the support plate along the moving direction of the adjusting member; when the spacing is adjusted, there is a spacing or loose contact between the limiting plate and the adjusting plate; After the spacing adjustment is completed, the adjusting member is suitable for driving the limiting plate to abut against the adjusting plate through the end of the screw rod.

9. The adjustable backpack unit according to claim 8, characterized in that: The limiting assembly also includes a spring, and the limiting plate is elastically slidably connected to the support plate through the spring, so that when the spacing is adjusted, the limiting plate maintains a distance from the adjustment plate under the elastic force of the spring.

10. The adjustable backpack unit according to claim 9, characterized in that: The support plate is provided with a slide groove, and the limit plate is installed in the slide groove by sliding on the side; the spring is located in the slide groove and is respectively abutted against the limit plate and the bottom of the slide groove through two ends.

11. The adjustable backpack unit according to claim 9, characterized in that: The support plate is provided with a slide groove, and a pair of guide rods are symmetrically provided on both sides of the slide groove; the limit plate is slidably matched with the guide rods through the slide holes provided on both sides of the slide groove; the springs are a pair and are respectively sleeved on the guide rods.

12. The adjustable backpack unit according to claim 11, characterized in that: The limiting assembly includes a pair of bolts, and the bolts are symmetrically screwed on both sides of the slide slot through screw rod sections; the bolts pass through a polished rod section to form the guide rod.

13. The adjustable backpack unit according to claim 8, characterized in that: The limiting assembly also includes a top sleeve; the top sleeve is threadedly connected to the end of the screw rod, and then the screw rod cooperates with the limiting plate through the top sleeve.

14. The adjustable backpack unit according to claim 8, characterized in that: The adjustment plate is provided with a plurality of limit grooves at intervals along the length direction; a limit block is provided on the end surface of the limit plate, and the limit plate is suitable for being snap-fitted with the corresponding limit grooves through the limit block.

15. The adjustable backpack unit according to claim 2, characterized in that: The shoulder strap portion includes a first back panel and a pair of shoulder straps; the first back panel is made of hard material, and the limiting component is suitable for being installed on the back of the first back panel; the shoulder straps are made of flexible material, and the two shoulder straps are connected to the two sides of the first back panel through the first end, and the front parts of the two shoulder straps are connected by a first strap with adjustable length.

16. The adjustable backpack unit according to claim 15, characterized in that: The waist belt portion includes a second back plate and a pair of waist protectors; the second back plate is made of hard material, and the limiting component is suitable for being installed on the back of the second back plate; the waist protectors are made of flexible material, and the two waist protectors are connected to the two sides of the second back plate through the rear ends, and the front ends of the two waist protectors are connected through a third strap with adjustable length.

17. The adjustable backpack unit according to claim 16, characterized in that: The shoulder straps are connected to both sides of the upper part of the first back panel, and the second ends of the shoulder straps are penetrated by second straps, the first ends of the second straps are connected to the lower part of the corresponding side of the first back panel, and the second ends of the second straps are connected to the middle part of the waist protector on the corresponding side, and the length of the second straps is adjustable.

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