Universal joint for baby stroller

Abstract

The utility model provides a universal joint of a baby stroller. Relates to the technical field of baby carriage appliances. The universal joint of the baby stroller comprises an upper joint shell and a lower joint shell, an arc-shaped shell is integrally formed on the upper joint shell, a rotating shaft is fixedly installed in the upper joint shell, lower joint reinforcing iron is arranged in the lower joint shell, and the rotating shaft penetrates through the lower joint reinforcing iron and is rotationally connected with the lower joint reinforcing iron; a wedge groove is formed in the lower joint reinforcing iron, an unlocking iron sheet is arranged in the upper joint shell in a sliding mode, one side of the unlocking iron sheet is inserted into the wedge groove to be matched with the wedge groove, a first long kidney-shaped hole and a second long kidney-shaped hole are formed in the unlocking iron sheet, and the side, close to the second long kidney-shaped hole, of the first long kidney-shaped hole is a plane. An abutting block is installed in the first long kidney-shaped hole in a sliding mode. The device has the advantages of being high in applicability and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of baby stroller equipment, in particular to a universal joint for a baby stroller. Background Art

[0002] A baby stroller is a kind of mobile tool for babies to sit in. It is convenient for people to put babies in it and push them when they go out. When using it, someone needs to help push or pull it. Most baby strollers are generally composed of a sunshade, a seat cushion, a sleeping basket and an anti-haze cover. The structure is simple and light, which is convenient for people to carry. When carrying a baby stroller, in order to be able to fold a larger baby stroller and place it in the trunk of the car, the baby stroller is generally designed to be foldable, thereby improving the convenience of people's daily use.

[0003] However, a foldable baby stroller generally has movable joints at multiple locations on the overall frame to achieve the foldability of the frame. However, most common joints are circular and can only be adapted to a baby stroller frame composed of multiple round rods, but cannot be applied to some baby strollers composed of rectangular rods, so the scope of application is relatively narrow.

[0004] Therefore, it is necessary to provide a universal joint for a baby stroller to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide a universal joint for a baby stroller with strong applicability.

[0006] In order to solve the above technical problems, the utility model provides a universal joint for a baby stroller, comprising: an upper joint shell and a lower joint shell, the upper joint shell being integrally formed with an arc-shaped shell, a rotating shaft being fixedly installed in the upper joint shell, a lower joint reinforcement iron being arranged in the lower joint shell, the rotating shaft passing through the lower joint reinforcement iron and being rotatably connected with the lower joint reinforcement iron, a wedge groove being provided on the lower joint reinforcement iron, an unlocking iron sheet being slidably provided in the upper joint shell, one side of the unlocking iron sheet being inserted into the wedge groove to form an adaptation, a first long waist hole and a second long waist hole being provided on the unlocking iron sheet, a side of the first long waist hole close to the second long waist hole being set as a plane, a resistance block being slidably installed in the first long waist hole, one side of the resistance block being fixedly installed with one end of a joint compression spring, and the other end of the joint compression spring being fixedly connected to the plane inner wall of the first long waist hole.

[0007] Preferably, an upper joint reinforcement iron sheet is fixedly installed in the upper joint housing, the upper joint reinforcement iron sheet is in a "U" shape, and the unlocking iron sheet is located in the upper joint reinforcement iron sheet.

[0008] Preferably, two first threaded holes are formed in the upper joint housing, and the two first threaded holes are respectively adapted to the first long waist hole and the second long waist hole, and two second threaded holes are formed in the lower joint housing.

[0009] Preferably, first screws are threadedly installed in both of the two first threaded holes, the abutting block abuts against the corresponding first screw, and second screws are threadedly installed in both of the two second threaded holes.

[0010] Preferably, a positioning hole is formed in the unlocking iron sheet, a mounting support piece is fixedly installed on one side of the upper joint housing, a connecting frame is fixedly installed on a side of the mounting support piece away from the unlocking iron sheet, a stud is threadedly installed on one side of the connecting frame, one end of the stud penetrates through the mounting support piece and a positioning rod is fixedly installed, the stud is movably connected with the mounting support piece, and the positioning rod is inserted into the positioning hole.

[0011] Preferably, a third threaded hole is formed in one side of the connecting frame, and the stud penetrates through the third threaded hole and is in threaded connection with the inner wall of the third threaded hole.

[0012] Preferably, a moving hole is formed in the mounting support piece, and the stud penetrates through the moving hole and is movably connected with the inner wall of the moving hole.

[0013] Compared with the related art, the universal joint of the baby stroller provided by the present utility model has the following beneficial effects:

[0014] The present utility model provides a universal joint of a baby stroller. By arranging a rotatable lower joint reinforcing iron on the rotating shaft, the upper joint housing and the lower joint housing can be folded, so as to achieve a folding effect. Moreover, the arrangement of the first threaded holes and the second threaded holes enables the upper joint housing and the lower joint housing to be installed on a round rod frame or a rectangular rod frame, with a wide application range. Only by using the first screws and the second threaded rods can the installation be formed, and the operation is also simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic view of the flattened state of the first embodiment of the universal joint of the baby stroller provided by the present utility model;

[0016] Figure 2 is a schematic view of the folded state of the first embodiment of the universal joint of the baby stroller provided by the present utility model;

[0017] Figure 3 is a schematic cross-sectional structure view of the first embodiment of the universal joint of the baby stroller provided by the present utility model;

[0018] Figure 4This is a structural schematic diagram of the upper joint reinforcement iron sheet in the first embodiment of the universal joint for baby strollers provided by the utility model;

[0019] Figure 5 A front view schematic diagram of a second embodiment of the universal joint for a baby stroller provided by the utility model;

[0020] Figure 6 A side view schematic diagram of a second embodiment of the universal joint for a baby stroller provided by the utility model;

[0021] Figure 7 A schematic diagram of the opening position of the locking holes in the second embodiment of the universal joint for baby strollers provided by the utility model;

[0022] Figure 8 A schematic diagram of the connection structure between the upper joint housing and the mounting support piece in the second embodiment of the universal joint for baby strollers provided by the utility model;

[0023] Figure 9 for Figure 8 A schematic diagram of the enlarged structure of part A is shown.

[0024] Numbers in the figure: 1. Upper joint shell; 2. Arc shell; 3. Lower joint shell; 4. Rotating axis; 5. Lower joint reinforcement iron; 6. Wedge groove; 7. Upper joint reinforcement iron sheet; 8. Unlocking iron sheet; 9. First long waist hole; 10. Resistance block; 11. Joint compression spring; 12. Second long waist hole; 13. Positioning hole; 14. Mounting support plate; 15. Connecting frame; 16. Stud; 17. Positioning rod. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0026] First embodiment

[0027] Please refer to Figures 1 - 4In the first embodiment of the utility model, the universal joint of the baby stroller includes: an upper joint shell 1 and a lower joint shell 3, and an integrally formed arc-shaped shell 2 is provided on the upper joint shell 1, and the arc-shaped shell 2 can provide a rotation space, and a rotating shaft 4 is fixedly installed in the upper joint shell 1, and a lower joint reinforcement iron 5 is provided in the lower joint shell 3, and the rotating shaft 4 passes through the lower joint reinforcement iron 5 and forms a rotation connection therewith, and a wedge groove 6 is provided on the lower joint reinforcement iron 5, and an unlocking iron sheet 8 is slidably provided in the upper joint shell 1, and one side of the unlocking iron sheet 8 is inserted into the wedge groove 6 to form an adaptation, so that the upper joint shell 1 and the lower joint shell 3 can be formed into a stable flattened state through the insertion of the two, and a first long waist hole 9 and a second long waist hole 12 are provided on the unlocking iron sheet 8, and the first long waist hole 9 The side close to the second long waist hole 12 is set as a plane, and a resistance block 10 is slidably installed in the first long waist hole 9, and one end of the joint compression spring 11 is fixedly installed on one side of the resistance block 10, and the other end of the joint compression spring 11 is fixedly connected to the plane inner wall of the first long waist hole 9, and two first threaded holes are opened on the upper joint shell 1, and the two first threaded holes are respectively adapted to the first long waist hole 9 and the second long waist hole 12, and two second threaded holes are opened on the lower joint shell 3, and the first screw rods are threadedly installed in the two first threaded holes, and the resistance block 10 is in conflict with the corresponding first screw rod, and the second screw rods are threadedly installed in the two second threaded holes. Through the design of the first threaded hole and the second threaded hole, the upper joint shell 1 and the lower joint shell 3 can be fixed on the round rod frame or the rectangular rod frame to improve the applicability.

[0028] In the above method, in order to improve the strength of the upper joint outer shell 1, a "U"-shaped upper joint reinforcement iron sheet 7 is fixedly installed in the upper joint outer shell 1, and the unlocking iron sheet 8 is located in the upper joint reinforcement iron sheet 7. The upper joint reinforcement iron sheet 7 is equivalent to an inner lining and contacts with the inner wall of the upper joint outer shell 1, thereby forming a higher supporting strength.

[0029] The working principle of the universal joint of the baby stroller provided by the utility model is as follows:

[0030] When in use, the two first screws and the two second screws are directly taken out, and then the two first threaded holes and the two second threaded holes are respectively aligned with the corresponding mounting holes on the frame rod, and then the first threaded rod and the second screw are installed again. After the installation is completed, the first screw and the second screw are fixed with nuts, so that the upper joint housing 1 and the lower joint housing 3 are respectively fixed on the two frame rods;

[0031] When the two frame rods need to be rotated to fold, the unlocking iron sheet 8 is directly pulled to pull it out of the wedge groove 6. At this time, the first screw rod is in contact with the contact block 10, so that the joint compression spring 11 is in a compressed state. Then, the lower joint housing 3 is rotated to fold the two frame rods. Then, the unlocking iron sheet 8 is released, and the rebounding joint compression spring 11 will press against the unlocking iron sheet 8 and tightly contact the outer wall of the lower joint reinforcement iron 5.

[0032] When flattening again, it is only necessary to rotate the lower joint housing 3. After the lower joint housing 3 is rotated to the same parallel line as the upper joint housing 1, the compressed joint compression spring 11 directly pushes the unlocking iron sheet 8 into the wedge groove 6, thereby completing the flattening operation.

[0033] Compared with the related art, the universal joint of the baby stroller provided by the utility model has the following beneficial effects:

[0034] The utility model arranges a rotatable lower joint reinforcement iron 5 on the rotating shaft 4, so that the upper joint shell 1 and the lower joint shell 3 can be folded, thereby achieving a folding effect. In addition, the arrangement of the first threaded hole and the second threaded hole enables the upper joint shell 1 and the lower joint shell 3 to be installed on a round rod frame or a rectangular rod frame. The utility model has a wide range of applications. The installation can be formed by only using the first screw rod and the second threaded rod, and the operation is also simple.

[0035] Second embodiment:

[0036] Based on the universal joint for baby strollers provided in the first embodiment of the present application, the second embodiment of the present application provides another universal joint for baby strollers. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0037] The second embodiment of the utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0038] Please refer to Figures 5 - 9 The universal joint of the baby stroller also includes a locking hole 13, which is opened on the unlocking iron sheet 8. A mounting support sheet 14 is fixedly installed on one side of the upper joint housing 1, and a connecting frame 15 is fixedly installed on the side of the mounting support sheet 14 away from the unlocking iron sheet 8. A stud 16 is threadedly installed on one side of the connecting frame 15, one end of which passes through the mounting support sheet 14 and is fixedly installed with a locking rod 17. The stud 16 is movably connected to the mounting support sheet 14, and the locking rod 17 is inserted into the locking hole 13.

[0039] In the above manner, a third threaded hole is opened on one side of the connecting frame 15, and the stud 16 passes through the third threaded hole and is screwed together with the inner wall of the third threaded hole. A movable hole is opened on the mounting support plate 14, and the stud 16 passes through the movable hole and is movably connected to the inner wall of the movable hole.

[0040] When the upper joint housing 1 and the lower joint housing 3 are in a flattened state, in order to prevent the unlocking iron sheet 8 from being accidentally pulled, which may cause the frame to suddenly fold, a good anti-accidental pulling function can be formed by the clamping rod 17 being stuck in the clamping hole 13 in the flattened state. When folding is required, just rotate the stud 16 counterclockwise to screw the clamping rod 17 out of the clamping hole 13, and normal folding work can be carried out.

[0041] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A universal joint for a baby stroller, comprising an upper joint shell and a lower joint shell, characterized in that: An arc-shaped shell is integrally formed on the upper joint shell, a rotating shaft is fixedly installed in the upper joint shell, a lower joint reinforcement iron is provided in the lower joint shell, the rotating shaft passes through the lower joint reinforcement iron and is rotatably connected to the lower joint reinforcement iron, a wedge groove is provided on the lower joint reinforcement iron, an unlocking iron sheet is slidably provided in the upper joint shell, one side of the unlocking iron sheet is inserted into the wedge groove to form an adaptation, a first long waist hole and a second long waist hole are provided on the unlocking iron sheet, a side of the first long waist hole close to the second long waist hole is set as a plane, a resistance block is slidably installed in the first long waist hole, one side of the resistance block is fixedly installed with one end of a joint compression spring, and the other end of the joint compression spring is fixedly connected to the plane inner wall of the first long waist hole.

2. The universal joint for a baby stroller according to claim 1, characterized in that: An upper joint reinforcement iron sheet is fixedly installed in the upper joint housing, the upper joint reinforcement iron sheet is in a "U" shape, and the unlocking iron sheet is located in the upper joint reinforcement iron sheet.

3. The universal joint for a baby stroller according to claim 1, characterized in that: The upper joint housing is provided with two first threaded holes, which are respectively matched with the first long waist hole and the second long waist hole, and the lower joint housing is provided with two second threaded holes.

4. The universal joint for a baby stroller according to claim 3, characterized in that: A first screw rod is threadedly installed in each of the two first threaded holes, the abutment block abuts against the corresponding first screw rod, and a second screw rod is threadedly installed in each of the two second threaded holes.

5. The universal joint for a baby stroller according to claim 1, characterized in that: A locking hole is provided on the unlocking iron plate, a mounting support plate is fixedly installed on one side of the upper joint housing, a connecting frame is fixedly installed on the side of the mounting support plate away from the unlocking iron plate, a stud is threadedly installed on one side of the connecting frame, one end of the stud passes through the mounting support plate and is fixedly installed with a locking rod, the stud is movably connected to the mounting support plate, and the locking rod is inserted into the locking hole.

6. The universal joint for a baby stroller according to claim 5, characterized in that: A third threaded hole is formed on one side of the connecting frame, and the stud penetrates through the third threaded hole and is screwed together with the inner wall of the third threaded hole.

7. The universal joint for a baby stroller according to claim 5, characterized in that: The mounting support plate is provided with an active hole, and the stud penetrates through the active hole and is movably connected to the inner wall of the active hole.

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