Folding riding child draw-bar box

Abstract

The utility model relates to a folding riding child draw-bar box which is characterized in that a box body is fixedly arranged on one side of the box body, a telescopic handle is sleeved with a seat plate, the seat plate is hinged to a support, a locking plate is fixedly arranged at the bottom of the seat plate, a support fixing plate allowing the support to be connected in an inserted mode is hinged between the locking plate and the seat plate, and the support fixing plate can rotate along the outer wall of the locking plate. A plurality of symmetrical first clamping grooves are formed in the outer wall of the locking plate, the support fixing plate is provided with first clamping blocks clamped with the first clamping grooves through locking structures, the locking structures can control the clamping state of the first clamping blocks and the first clamping grooves, and the locking structures lock the clamping state of the first clamping blocks and the first clamping grooves. The first clamping groove formed in the outer wall of the locking plate provides two different states of folding and unfolding of the support, the stable connecting structure not only improves the safety of the product, but also enhances the use experience of a user on the product, and when the product is used, the user does not need to worry about potential safety hazards caused by loosening of the support.

Description

Technical Field

[0001] The utility model relates to the technical field of trolley cases, in particular to a foldable trolley case for children riding bicycles. Background Art

[0002] Children's riding trolley case is an innovatively designed travel or daily use suitcase designed specifically for children. It combines the functions of riding toys and traditional trolley cases. It not only has enough storage space to load children's clothes, toys and other necessities, but is also equipped with foldable footrests and handles, so that children can ride it to rest or play when they are tired of walking. The box is usually designed with non-slip tires and a stable structure, as well as easy-to-grip handles to ensure the safety of children. At the same time, the bright colors and cute patterns often attract children's attention and increase their interest in use. By using such a box, children can learn a sense of responsibility while playing, such as managing their own belongings.

[0003] Publication No.: CN207544542U discloses a foldable child chair cart trolley case, comprising a foldable child chair cart and a suitcase, wherein the foldable child chair cart comprises a hand pull rod, wherein the hand pull rod is arranged on the back of the suitcase, a seat is arranged in the middle of the hand pull rod, an armrest is arranged between the hand pull rod and the seat, a bracket is arranged below the seat, a universal wheel is arranged at the bottom end of the bracket, a sleeve is provided at the lower end of the hand pull rod, the sleeve is fixed on the support assembly, and a roller is arranged below the support assembly. The children's chair car can be combined with and separated from the suitcase. The trolley case is equipped with double support rods and universal wheels, which can be pushed and pulled. The necessities for taking children out for travel and heavier items can be placed in the trolley case, which solves the weight and fatigue of adults holding children and carrying the above items when shopping in the mall for a long time. However, there is no stable fixing structure between the bracket and the hand handle, which will cause looseness between the bracket and the hand handle after long-term use. In particular, the looseness between the bracket and the hand handle when children are using it can easily cause accidents. Therefore, this technology still has room for improvement. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a foldable bicycle trolley case for children in view of the deficiencies of the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a foldable bicycle trolley case for children, comprising a telescopic handle, a suitcase, and a bracket, wherein the suitcase is fixedly arranged on one side of the suitcase, the telescopic handle is provided with a seat plate, and the seat plate is hinged to the bracket, and is characterized in that: a locking plate is fixedly provided at the bottom of the seat plate, a bracket fixing plate for the bracket to be inserted is hingedly provided between the locking plate and the seat plate, the bracket fixing plate can rotate along the outer wall of the locking plate, the outer wall of the locking plate is provided with a plurality of first clamping grooves, the bracket fixing plate is provided with a first clamping block clamped with the first clamping groove through a locking structure, and the locking structure can lock the clamping state of the first clamping block and the first clamping groove.

[0006] The above technical solution is adopted, by adding a locking plate at the bottom of the seat plate, and hingedly setting a bracket fixing plate between the locking plate and the seat plate, and at the same time using the locking structure to lock the clamping state of the first clamping block and the first clamping groove, the first clamping groove set on the outer wall of the locking plate provides two different states of the bracket folded and unfolded, the locking structure can lock or release the clamping between the first clamping groove and the first clamping block. When the trolley case needs to be folded, the bracket fixing plate drives the bracket to rotate along the outer wall to the clamping groove in the folded state, and is locked by the locking structure; when the trolley case needs to be unfolded, the locking structure contacts the current state, and at the same time, the bracket fixing plate rotates along the outer wall to the first clamping slot in the unfolded state and is then locked by the locking structure. The stable connection structure not only improves the safety of the product, but also enhances the user experience of the product. When using the product, there is no need to worry about the safety hazards caused by the loosening of the bracket, and children can use it with more confidence.

[0007] The above-mentioned foldable bicycle trolley case for children can be further configured as follows: the locking structure includes an installation cavity opened by the bracket fixing plate toward the side of the locking plate, a mounting plate for installing the first clamping block is provided in the installation cavity, the mounting plate can move axially in the installation cavity, the bracket fixing plate is located in the installation cavity and has a first through-hole, the mounting plate is fixed with a pull pin toward the side of the first through-hole, the pull pin is penetrated and arranged in the first through-hole, an elastic structure is provided between the mounting plate and the installation cavity to provide outward expansion force for the mounting plate, and the first clamping block is clamped with the first clamping groove on the locking plate through the elastic structure.

[0008] By adopting the above technical solution, the axial movement ability of the mounting plate in the mounting cavity enables the first clamping block to be flexibly clamped with the first clamping groove on the locking plate. The application of the elastic structure provides an outward expansion force for the mounting plate, and provides continuous contact pressure between the first clamping block and the first clamping groove, ensuring the stability and reliability of the connection. A pull pin is fixedly provided on the mounting plate toward the side of the first through hole. By pulling the pull pin, the mounting plate is driven to move axially in the mounting cavity, causing the first clamping block set on the mounting plate to be out of contact and clamping with the first clamping groove. When the pull pin is released, the first clamping block is clamped and locked with the first clamping groove.

[0009] The above-mentioned foldable bicycle trolley case for children can be further configured as follows: the elastic structure includes a plurality of connecting columns for spring sleeve installation provided in the installation cavity, the installation plate is provided with abutment grooves for spring abutment on the side facing the installation cavity, and a second penetration hole for the connecting column to pass through is provided in the abutment groove, and the installation plate moves axially in the installation cavity through the connecting columns and the connecting grooves.

[0010] Using the above technical solution, the spring is sleeved on the connecting column and abuts against the abutment groove of the mounting plate. Through the elastic force of the spring, the mounting plate can move axially in the mounting cavity, so that the first clamping block can be tightly clamped with the first clamping groove on the locking plate, providing a continuous and stable outward expansion force for the mounting plate.

[0011] The above-mentioned foldable bicycle trolley case for children can be further configured as follows: the telescopic handlebar is provided with a safety handrail, and the safety handrail includes a connecting arm and a safety ring arranged on the handrail, and the two ends of the connecting arm are respectively provided with a first connecting member and a second connecting member, and the first connecting member and the second connecting member are detachably connected by a snap-on assembly, and the two ends of the safety ring are respectively fixedly connected to the first connecting member and the second connecting member.

[0012] Using the above technical solution, the two ends of the connecting arm are respectively provided with a first connecting part and a second connecting part, and a detachable connection is achieved through a snap-on assembly, which is convenient for installation and maintenance. The two ends of the safety ring are fixedly connected to the first connecting part and the second connecting part, and can wrap the entire child around the installation ring, ensuring the safety of the entire armrest.

[0013] The above-mentioned foldable bicycle trolley case for children can be further configured as follows: the snap-fit ​​assembly includes a mounting piece arranged between the first connecting piece and the second connecting piece, the mounting piece is provided with a first cavity for axial installation of a button and a second cavity for installation of a lever arm and a snap-fit ​​piece, the first cavity and the second cavity are communicated with each other, the button is plug-connected with the lever arm, the snap-fit ​​piece is plug-connected with the lever arm, a second snap-fit ​​block is provided on one side of the snap-fit ​​piece, and a second snap-fit ​​groove is provided on one end of the second connecting piece facing the mounting piece to be plugged with the second snap-fit ​​block, and when the button is pressed, the snap-fit ​​piece is lifted by the lever arm to cause the second snap-fit ​​block to disengage from the second snap-fit ​​groove.

[0014] Using the above technical solution, a first cavity and a second cavity are provided in the mounting member, which are respectively used for the axial installation of the button, the lever arm and the clip-on member, so that the action of the button can be directly transmitted to the lever arm, thereby driving the clip-on member to move. When the button is pressed, the lever arm is acted upon by the force to lift the clip-on member, thereby causing the second clip-on block to disengage from the second clip-on groove on the second connecting member, thereby achieving quick release. On the contrary, when the button is released, the clip-on member will fall, causing the second clip-on block to be re-engaged in the second clip-on groove, completing a stable connection.

[0015] The above-mentioned foldable bicycle trolley case for children can be further configured as follows: the first connecting member and the second connecting member are provided with an embedded groove for the mounting member to be embedded and installed toward one end of the mounting member, a plurality of plug-in columns are provided in the embedded groove, and plug-in holes for the plug-in columns to be plugged and fixed are provided at both ends of the mounting member. The mounting member and the first connecting member and the second connecting member are plugged and fixed in the embedded groove, a third through-hole is opened on one side of the first connecting member, and the button is inserted into the third through-hole to facilitate the fixation of the first connecting member and the mounting member, and the second connecting member is fixed to the mounting member through the second clamping groove and the second clamping block.

[0016] By adopting the above technical solution, the first connecting member and the second connecting member are provided with an embedded groove for their embedded installation towards one end of the mounting member, so that the connecting member can be tightly embedded in the mounting member, and at the same time, a number of plug-in columns are provided in the embedded groove, and plug-in holes for these plug-in columns to be plugged and fixed are provided at both ends of the mounting member, thereby enhancing the firmness of the connection. In addition, the third through-hole opened on one side of the first connecting member allows the button to pass through it and be fixed to the mounting member, while the second connecting member is fixed to the mounting member through the second clamping groove and the second clamping block, ensuring smooth and unobstructed operation of the button and a stable connection between the second connecting member and the mounting member.

[0017] The above-mentioned foldable bicycle trolley case can be further configured as follows: the first connecting member and the second connecting member are provided with sleeve holes on the side facing the connecting arm, and both ends of the connecting arm are provided with sleeve ends that are sleeved and installed in the sleeve holes.

[0018] By adopting the above technical solution, the first connecting member and the second connecting member are installed on the sleeve end of the connecting arm through the sleeve hole, realizing a connection method that is both stable and flexible. The first connecting member and the second connecting member are provided with sleeve holes on the side facing the connecting arm, so that the connecting arm can be tightly sleeved on the connecting member, thereby improving the stability of the overall structure. At the same time, when the safety handrail needs to be removed, the first connecting member and the second connecting member can be directly removed from the connecting arm, which facilitates the installation and removal of the safety handrail.

[0019] The above-mentioned foldable bicycle trolley case for children can be further configured as follows: the bracket is fixedly connected to a third connecting member at one end away from the locking plate, a universal wheel is rotatably provided at the bottom of the third connecting member, a brake is also provided on one side of the third connecting member to control the rotation of the universal wheel, and a reinforcing plate is also provided between the third connecting members to enhance the connection strength.

[0020] By adopting the above technical solution, a universal wheel is provided at the bottom of the third connecting member, so that the entire trolley case can be easily moved on the ground, improving the convenience of use. At the same time, a brake is provided on one side of the third connecting member to control the rotation of the universal wheel. This design can ensure that the universal wheel is locked when needed to prevent it from continuing to rotate, thereby increasing the safety of use. In addition, a reinforcing plate is provided between the third connecting members to enhance the connection strength. This design enhances the stability of the overall structure and improves the durability of the structure.

[0021] The above-mentioned foldable bicycle trolley case can be further configured as follows: a folding groove is provided on the side of the case facing the telescopic handle for the telescopic handle to be embedded and installed when the telescopic handle is folded; a roller is provided at the bottom of the telescopic handle; a mounting protrusion is provided at the bottom of the folding groove; a roller groove for the roller to be engaged is formed between the mounting protrusion and the folding groove.

[0022] By adopting the above technical solution, a folding groove is provided on the side of the bag facing the telescopic handle for embedded installation when folded, so that the telescopic handle can fit tightly on the bag when not in use, reducing the occupied space and improving the overall compactness. At the same time, a roller is provided at the bottom of the telescopic handle, and a mounting protrusion is provided at the bottom of the folding groove, and a roller groove for the roller to be engaged is formed between the two, ensuring the stability of the telescopic handle in the folded state.

[0023] The above-mentioned foldable cycling children's trolley case can be further configured as follows: a handle grip is fixedly provided on the top of the telescopic handle, the handle grip includes a handle connector mounted on the top of the telescopic handle, a handle base is provided on the top of the handle connector, an anti-slip pad is installed on the top of the handle base, a clipping strip is provided on the top of the handle base, and the anti-slip pad is provided with a third clipping groove for the clipping strip to be clipped.

[0024] By adopting the above technical solution, a handle grip is fixedly provided on the top of the telescopic handle, so that the user can hold the handle more firmly when in use, thereby improving the stability of the operation. The handle grip is wrapped around the handle connector on the top of the telescopic handle, which increases the comfort of holding and improves the durability of the handle.

[0025] The beneficial effects of the present invention are as follows: the locking structure locks the clamping state of the first clamping block and the first clamping groove, and the first clamping groove arranged on the outer wall of the locking plate provides two different states of the bracket: folded and unfolded. The stable connection structure not only improves the safety of the product, but also enhances the user's experience of using the product. When using the product, there is no need to worry about the safety hazards caused by the loosening of the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the utility model;

[0027] Figure 2 This is an exploded view of the structure of the present utility model;

[0028] Figure 3 This is a diagram of the internal structure of the fixed plate of the present utility model;

[0029] Figure 4 This is a structural diagram of the mounting plate of the present utility model;

[0030] Figure 5 This is an exploded view of the safety handrail structure of the utility model;

[0031] Figure 6 This is a cross-sectional view of the mounting structure of the utility model;

[0032] Figure 7 This is a diagram showing the internal structure of the second connecting member of the present invention;

[0033] Figure 8 This is a diagram showing the internal structure of the first connecting member of the present utility model;

[0034] Figure 9 This is a bottom structure diagram of the luggage of the present utility model;

[0035] Figure 10 This is an exploded view of the handle structure of the present invention;

[0036] Reference numerals: 1-telescopic handle, 2-luggage, 3-bracket, 4-seat plate, 5-locking plate, 6-fixing plate, 7-first clamping groove, 8-first clamping block, 9-installation cavity, 10-installation plate, 11-first through hole, 12-pull pin, 13-connecting column, 14-spring, 15-butting groove, 16-safety handrail, 17-connecting arm, 18-safety ring, 19-first connecting member, 20-second connecting member, 21-installation member, 22-button, 23-first cavity, 24-lever arm, 25-clamping member, 26- Second cavity, 27-second clamping block, 28-second clamping groove, 29-embedded groove, 30-plug-in column, 31-plug-in hole, 32-third through-hole, 33-sleeve hole, 34-sleeve end, 35-third connecting piece, 36-universal wheel, 37-brake, 38-reinforcement plate, 39-folding groove, 40-roller, 41-mounting protrusion, 42-roller groove, 43-handle grip, 44-handle connecting piece, 45-handle base, 46-anti-slip pad, 47-clamping strip, 48-third clamping groove, 1501-second through-hole. DETAILED DESCRIPTION

[0037] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0038] like Figure 1-4The utility model shown in the figure provides the following technical solutions, a foldable bicycle trolley case for children, comprising a telescopic handle 1, a bag 2, and a bracket 3. The bag 2 is fixedly arranged on one side of the bag 2. The telescopic handle 1 is provided with a seat plate 4, and the seat plate 4 is hinged to the bracket 3. The characteristics are: a locking plate 5 is fixedly provided at the bottom of the seat plate 4, and a bracket 3 fixing plate 6 for the bracket 3 to be inserted is hingedly provided between the locking plate 5 and the seat plate 4. The bracket 3 fixing plate 6 can rotate along the outer wall of the locking plate, and the outer wall of the locking plate is provided with a plurality of first clamping grooves 7. The bracket 3 fixing plate 6 is provided with a first clamping block 8 clamped with the first clamping groove 7 through a locking structure. The locking structure can The first clamping block 8 and the first clamping groove 7 can be locked in a clamping state by adding a locking plate 5 to the bottom of the seat plate 4 and hingedly setting a bracket 3 fixing plate 6 between the locking plate 5 and the seat plate 4. At the same time, the locking structure is used to lock the clamping state of the first clamping block 8 and the first clamping groove 7. The first clamping groove 7 provided on the outer wall of the locking plate provides two different states of the bracket 3: folded and unfolded. The locking structure can lock or release the clamping between the first clamping groove 7 and the first clamping block 8. When the suitcase needs to be folded, the bracket 3 fixing plate 6 drives the bracket 3 to rotate along the outer wall into the clamping groove 42 in the folded state and is locked by the locking structure.When the suitcase needs to be unfolded and the locking structure contacts the current state, the bracket 3 fixing plate 6 rotates along the outer wall to the first clamping groove 7 in the unfolded state and is then locked through the locking structure. The stable connection structure not only improves the safety of the product, but also enhances the user's experience of the product. When using the product, there is no need to worry about the safety hazards caused by the loosening of the bracket 3, and children can use it with more confidence. The locking structure includes a mounting cavity 9 opened on the side of the bracket 3 fixing plate 6 toward the locking plate. A mounting plate 10 for mounting the first clamping block 8 is provided in the mounting cavity 9. The mounting plate 10 can be installed in the mounting cavity 9. Axial movement, the bracket 3 fixing plate 6 is located in the installation cavity 9 and has a first through-hole 11. The installation plate 10 is fixed with a pull pin 12 on one side facing the first through-hole 11. The pull pin 12 is penetrated and set in the first through-hole 11. An elastic structure is provided between the installation plate 10 and the installation cavity 9 to provide an outward expansion force for the installation plate 10. The first clamping block 8 is clamped with the first clamping groove 7 on the locking plate 5 through the elastic structure. The axial movement ability of the installation plate 10 in the installation cavity 9 enables the first clamping block 8 to be flexibly clamped with the first clamping groove 7 on the locking plate 5. The application of the elastic structure is for the installation plate 10 The first engaging block 8 and the first engaging groove 7 are connected to each other by the spring 12. The spring 12 is pressed against the first engaging groove 7 and the first engaging block 8 is pressed against the first engaging groove 7. The spring 12 is pressed against the first engaging groove 7 and the first engaging block 8 is pressed against the first engaging groove 7. The side of the plate 10 facing the mounting cavity 9 is provided with an abutment groove 15 for abutment of the spring 14. A second through-hole 1501 for the connecting post 13 to pass through is formed in the abutment groove 15. The mounting plate 10 moves axially within the mounting cavity 9 via the connecting post 13 and the connecting groove. The spring 14 is sleeved on the connecting post 13 and abuts the abutment groove 15 of the mounting plate 10. The elastic force of the spring 14 enables the mounting plate 10 to move axially within the mounting cavity 9, thereby allowing the first engaging block 8 to tightly engage the first engaging groove 7 on the locking plate 5, providing a continuous and stable outward expansion force for the mounting plate 10.

[0039] like Figure 5-8The utility model shown in the figure provides the following technical solutions: a foldable bicycle trolley case for children, a telescopic handle 1 is provided with a safety handrail 16, the safety handrail 16 includes a connecting arm 17 and a safety ring 18 provided on the handrail, the two ends of the connecting arm 17 are respectively provided with a first connecting piece 19 and a second connecting piece 20, the first connecting piece 19 and the second connecting piece 20 are detachably connected by a snap-fit ​​assembly, the two ends of the safety ring 18 are respectively fixedly connected to the first connecting piece 19 and the second connecting piece 20, the two ends of the connecting arm 17 are respectively provided with a first connecting piece 19 and a second connecting piece 20, and the detachable connection is achieved by a snap-fit ​​assembly, which is convenient for installation and maintenance, and the two ends of the safety ring 18 are fixedly connected to the first connecting piece 19 and the second connecting piece 20, which can be used to fold the child's bicycle. The child is completely wrapped in the mounting ring to ensure the safety of the entire armrest. The clamping assembly includes a mounting piece 21 arranged between the first connecting piece 19 and the second connecting piece 20. A first cavity 23 for axial installation of the button 22 and a second cavity 26 for installation of the lever arm 24 and the clamping piece 25 are provided in the mounting piece 21. The first cavity 23 and the second cavity 26 are communicated with each other. The button 22 is plugged into the lever arm 24. The clamping piece 25 is plugged into the lever arm 24. A second clamping block 27 is provided on one side of the clamping piece 25. A second clamping groove 28 is provided on one end of the second connecting piece 20 facing the mounting piece 21 to be clamped with the second clamping block 27. When the button 22 is pressed, the clamping piece 25 is lifted by the lever arm 24 to cause the second clamping block 27 to disengage from the second clamping block. The connecting groove 28 and the mounting member 21 are provided with a first cavity 23 and a second cavity 26, which are respectively used for the axial installation of the button 22, the lever arm 24 and the clamping member 25, so that the action of the button 22 can be directly transmitted to the lever arm 24, thereby driving the clamping member 25 to move. When the button 22 is pressed, the lever arm 24 is acted upon by the force to lift the clamping member 25, thereby prompting the second clamping block 27 to disengage from the second clamping groove 28 on the second connecting member 20 to achieve quick release. On the contrary, when the button 22 is released, the clamping member 25 will fall, so that the second clamping block 27 will be re-engaged in the second clamping groove 28 to complete a stable connection. The first connecting member 19 and the second connecting member 20 are provided with a mounting member 21 at one end thereof. The embedded groove 29 is provided with a plurality of plug-in columns 30. Plug-in holes 31 for plugging and fixing the plug-in columns 30 are provided at both ends of the mounting member 21. The mounting member 21 is plugged and fixed to the first connecting member 19 and the second connecting member 20 in the embedded groove 29. A third penetration hole 32 is opened on one side of the first connecting member 19. The button 22 is penetrated through the third penetration hole 32 to facilitate the first connecting member 19 and the mounting member 21 to be fixed. The second connecting member 20 is fixed to the mounting member 21 through the second clamping groove 28 and the second clamping block 27. The first connecting member 19 and the second connecting member 20 are provided with an embedded groove 29 for their embedded installation towards one end of the mounting member 21, so that the connecting member can be tightly embedded in the mounting member 21. At the same time, a plurality of plug-in columns 30 are provided in the embedded groove 29.The two ends of the mounting member 21 are provided with plug holes 31 for these plug posts 30 to be plugged and fixed, which enhances the firmness of the connection. In addition, the third penetration hole 32 opened on one side of the first connecting member 19 allows the button 22 to pass through it and be fixed to the mounting member 21, and the second connecting member 20 is fixed to the mounting member 21 through the second clamping groove 28 and the second clamping block 27, ensuring smooth operation of the button 22 and a stable connection between the second connecting member 20 and the mounting member 21. The first connecting member 19 and the second connecting member 20 are provided with a sleeve hole 33 on the side facing the connecting arm 17. The two sides of the connecting arm 17 The end is provided with a sleeve end 34 that is sleeved and installed with the sleeve hole 33. The first connecting member 19 and the second connecting member 20 are installed with the sleeve end 34 of the connecting arm 17 through the sleeve hole 33, realizing a connection method that is both stable and flexible. The first connecting member 19 and the second connecting member 20 are provided with a sleeve hole 33 on the side facing the connecting arm 17, so that the connecting arm 17 can be tightly sleeved on the connecting member, improving the stability of the overall structure. At the same time, when the safety handrail 16 needs to be removed, the first connecting member 19 and the second connecting member 20 can be directly removed from the connecting arm 17, which facilitates the installation and removal of the safety handrail 16.

[0040] like Figure 1 、 Figure 2 、 Figure 9 、 Figure 10The utility model shown in the figure provides the following technical solutions, a foldable bicycle children's trolley case, the bracket 3 is fixedly connected to the end away from the locking plate 5 with a third connecting member 35, the bottom of the third connecting member 35 is rotatably provided with a universal wheel 36, one side of the third connecting member 35 is also provided with a brake 37 for controlling the rotation of the universal wheel 36, and a reinforcing plate 38 is provided between the third connecting members 35 to enhance the connection strength. The bottom of the third connecting member 35 is rotatably provided with a universal wheel 36, so that the entire trolley case can be easily moved on the ground, which improves the convenience of use. At the same time, one side of the third connecting member 35 is also provided with a brake 37 for controlling the rotation of the universal wheel 36. The brake 37 for rotating the wheel 36 can ensure that the universal wheel 36 is locked when needed to prevent it from continuing to rotate, thereby increasing the safety of use. In addition, a reinforcing plate 38 for strengthening the connection strength is provided between the third connecting members 35. This design enhances the stability of the overall structure and improves the durability of the structure. The bag 2 is provided with a folding groove 39 on the side facing the telescopic handle 1 for embedded installation when the telescopic handle 1 is folded. The bottom of the telescopic handle 1 is provided with a roller 40. The folding groove 39 is provided with a mounting protrusion 41 at the bottom, and a roller is formed between the mounting protrusion 41 and the folding groove 39. The bag 2 is provided with a roller groove 42 for clamping the roller 40, and a folding groove 39 is provided on the side of the telescopic handle 1 for embedded installation when folded, so that the telescopic handle 1 can be tightly fitted on the bag 2 when not in use, reducing the occupied space and improving the overall compactness. At the same time, a roller 40 is provided at the bottom of the telescopic handle 1, and a mounting protrusion 41 is provided at the bottom of the folding groove 39, and a roller groove 42 for clamping the roller 40 is formed between the two, ensuring the stability of the telescopic handle 1 in the folded state. A handle grip 43 is fixedly provided on the top of the telescopic handle 1, and the handle grip 43 is wrapped around the telescopic handle 1. The handle connector 44 at the top of the handle 1 is provided with a handle base 45 fixed on the top of the handle connector 44, a non-slip pad 46 is installed on the top of the handle base 45, a clipping strip 47 is provided on the top of the handle base 45, and the non-slip pad 46 is provided with a third clipping groove 48 for the clipping strip 47 to be clipped. A handle grip 43 is fixed on the top of the telescopic handle 1, so that the user can hold the handle more firmly when in use, which improves the stability of the operation. The handle grip 43 is wrapped around the handle connector 44 at the top of the telescopic handle 1, which increases the comfort of holding and improves the durability of the handle.

[0041] The beneficial effects of the present invention are as follows: the locking structure locks the clamping state of the first clamping block 8 and the first clamping groove 7. The first clamping groove 7 arranged on the outer wall of the locking plate provides two different states of the bracket 3, folded and unfolded. The stable connection structure not only improves the safety of the product, but also enhances the user's experience of using the product. When using the product, there is no need to worry about the safety hazards caused by the loosening of the bracket 3.

Claims

1. A foldable children's bicycle trolley case, comprising a telescopic handle, a case, and a bracket, wherein the case is fixedly mounted on one side of the case, the telescopic handle is provided with a seat plate, and the seat plate is hinged to the bracket, characterized in that: A locking plate is fixedly provided at the bottom of the seat plate, and a bracket fixing plate for the bracket to be inserted is hingedly provided between the locking plate and the seat plate. The bracket fixing plate can rotate along the outer wall of the locking plate, and the outer wall of the locking plate is provided with several symmetrical first clamping grooves. The bracket fixing plate is provided with a first clamping block that is clamped with the first clamping groove through a locking structure, and the locking structure can control the clamping state of the first clamping block and the first clamping groove.

2. The foldable bicycle trolley case for children according to claim 1, characterized in that: The locking structure includes an installation cavity opened by the bracket fixing plate toward the side of the locking plate, a mounting plate for installing the first clamping block is provided in the installation cavity, the mounting plate can move axially in the installation cavity, the bracket fixing plate is located in the installation cavity and has a first through-hole opened, a pull pin is fixedly provided on the side of the mounting plate toward the first through-hole, the pull pin is penetrated and arranged in the first through-hole, an elastic structure for providing outward expansion force for the mounting plate is provided between the mounting plate and the installation cavity, and the first clamping block is clamped with the first clamping groove on the locking plate through the elastic structure.

3. The foldable bicycle trolley case for children according to claim 2, characterized in that: The elastic structure includes a plurality of connecting columns for spring sleeve installation in the installation cavity, a mounting plate is provided with an abutment groove for the spring to abut on the side facing the installation cavity, a second penetration hole for the connecting column to pass through is started in the abutment groove, and the mounting plate moves axially in the installation cavity through the connecting columns and the connecting groove.

4. The foldable bicycle trolley case for children according to claim 1, characterized in that: The telescopic handle is provided with a safety handrail, which includes a connecting arm and a safety ring arranged on the handgrip. The two ends of the connecting arm are respectively provided with a first connecting piece and a second connecting piece. The first connecting piece and the second connecting piece are detachably connected through a snap-on assembly, and the two ends of the safety ring are respectively fixedly connected to the first connecting piece and the second connecting piece.

5. The foldable bicycle trolley case for children according to claim 4, characterized in that: The clamping assembly includes a mounting piece arranged between the first connecting piece and the second connecting piece, and a first cavity for axial installation of a button and a second cavity for installation of a lever arm and a clamping piece are provided in the mounting piece. The first cavity and the second cavity are communicated with each other, the button is plugged into the lever arm, and the clamping piece is plugged into the lever arm. A second clamping block is provided on one side of the clamping piece, and a second clamping groove is provided on one end of the second connecting piece facing the mounting piece to be clamped with the second clamping block. When the button is pressed, the clamping piece is lifted by the lever arm to cause the second clamping block to disengage from the second clamping groove.

6. The foldable bicycle trolley case for children according to claim 5, characterized in that: The first connecting member and the second connecting member are provided with an embedded groove for the mounting member to be embedded and installed at one end facing the mounting member, and a plurality of plug-in columns are provided in the embedded groove. Plug-in holes for the plug-in columns to be inserted and fixed are provided at both ends of the mounting member. The mounting member and the first connecting member and the second connecting member are plugged and fixed in the embedded groove. A third through-hole is provided on one side of the first connecting member, and the button is inserted into the third through-hole to facilitate the fixation of the first connecting member and the mounting member. The second connecting member is fixed to the mounting member through the second clamping groove and the second clamping block.

7. The foldable bicycle trolley case for children according to any one of claims 4 to 6, characterized in that: The first connecting member and the second connecting member are provided with sleeve holes on one side facing the connecting arm, and both ends of the connecting arm are provided with sleeve ends sleeved and installed in the sleeve holes.

8. The foldable bicycle trolley case for children according to claim 7, characterized in that: The bracket is fixedly connected to a third connecting member at one end away from the locking plate. A universal wheel is rotatably provided at the bottom of the third connecting member. A brake is also provided on one side of the third connecting member to control the rotation of the universal wheel. A reinforcing plate is also provided between the third connecting members to enhance the connection strength.

9. The foldable bicycle trolley case for children according to claim 8, characterized in that: The bag is provided with a folding groove on the side facing the telescopic handle for embedded installation of the telescopic handle when folded, and a roller is provided at the bottom of the telescopic handle. A mounting protrusion is provided at the bottom of the folding groove, and a roller groove for the roller to be engaged is formed between the mounting protrusion and the folding groove.

10. The foldable bicycle trolley case for children according to claim 9, characterized in that: A handle grip is fixedly provided on the top of the telescopic handle, and the handle grip includes a handle connector mounted on the top of the telescopic handle, a handle base is provided on the top of the handle connector, an anti-slip pad is installed on the top of the handle base, a clipping strip is provided on the top of the handle base, and the anti-slip pad is provided with a third clipping groove for the clipping strip to be clipped.

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