Damping device and seat of stroller, and stroller

Abstract

To provide a damping device, a seat of a stroller, and a stroller.SOLUTION: A damping device is arranged on a first pipe 101 and a second pipe 102 of a seat pipe of the stroller, which are parallel to each other, and carries a seat part of the stroller. The damping device comprises a bracket structure pivotally connected o the first pipe and the second pipe. The bracket structure is arranged to elastically prevent the bracket structure from pivoting relative to the first pipe and the second pipe by means of a damping elastic element 30 to delay a downward movement of the seat part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a damper device for a stroller, a seat, and a stroller. [Background technology]

[0002] Strollers are commonly used to take children outdoors. With technological advances, the demands on strollers are also increasing. Existing strollers generally lack a damping structure in the seat, which can cause discomfort for the child when the stroller is driven over bumpy roads, affecting the ride quality. For this reason, seats with elastic wires have been proposed, but while these seats can achieve a certain degree of damping effect, they are not sufficient. Furthermore, because the seat only has one wire, the seat is not strong enough and has low bearing capacity.

[0003] Therefore, there is a need to develop a stroller damper device that can avoid the above-mentioned problems in the prior art. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of the above-mentioned shortcomings of the prior art, the object of the present disclosure is to provide a damper device for a stroller that enables the stroller to achieve a better damper effect.

[0005] To achieve these and other advantages, and in accordance with the purpose of the present disclosure, as embodied and generally described herein, there is provided a damper device for a stroller, the damper device being disposed on parallel first and second pipes of a seat pipe of the stroller and supporting a seat portion of the stroller, the damper device including a bracket structure rotatably connected to the first and second pipes, the bracket structure being arranged such that a damper elastic element elastically prevents the bracket structure from rotating relative to the first and second pipes, thereby retarding downward movement of the seat portion. [Means for solving the problem]

[0006] In one embodiment, the bracket structure includes a damper pipe and a damper sleeve, the damper pipe abutting the underside of the seat portion and having a fixed end rotatably connected to the first pipe and a free end higher than the second pipe, the damper sleeve having a first end rotatably connected to the second pipe and a second end slidably and rotatably connected to the damper pipe, the damper sleeve being arranged so that when the damper pipe is pushed downward and rotates downward relative to the first pipe, the damper sleeve is driven to rotate downward relative to the second pipe, wherein the damper pipe and the damper sleeve are separate members, and the damper elastic element is arranged so that when the damper pipe and the damper sleeve rotate downward, a damping force is applied to the damper pipe and / or the damper sleeve.

[0007] In one embodiment, the damper pipe is provided with a connecting sleeve that is slidable along the damper pipe, and the second end of the damper sleeve is rotatably connected to the connecting sleeve so that the second end of the damper sleeve is indirectly rotatably connected to the damper pipe.

[0008] In one embodiment, the connecting sleeve has a pin bore extending transversely to the damper pipe, the second end of the damper sleeve has a pin connection hole, and the portion of the damper pipe surrounded by the connecting sleeve has an elongated slot-shaped slide hole, and a pin passes through the pin connection hole, the pin bore and the slide hole in that order.

[0009] In one embodiment, the connecting sleeve is provided with a damper sleeve hole through which the damper pipe slides, a lateral connecting column is provided on the damper pipe at the position of the connecting sleeve where the pin hole is provided, the pin hole passes through the connecting column, the first end of the damper sleeve is provided with a second sleeve hole through which the second pipe passes, two limit bosses are provided on the second end of the damper sleeve, the pin connecting hole is formed by the two limit bosses passing through, a limit groove is defined between the two limit bosses, and the portion of the connecting sleeve where the connecting column is provided is accommodated in the limit groove.

[0010] In one embodiment, the damper elastic element is a torsion spring, the first end of the torsion spring is a pressing portion that acts on the damper pipe, the second end of the torsion spring is a hook portion that engages with an engagement hole in the damper sleeve, a ring-shaped collar ring wound with the spring wire of the torsion spring is provided between the pressing portion and the hook portion, and the collar ring is provided on the connecting column of the connecting sleeve.

[0011] In one embodiment, a boss is provided at the bottom of the connecting sleeve, a rotation hole is provided in the boss, a pin connecting hole is provided at the second end of the damper sleeve, and a pin passes through the pin connecting hole and the rotation hole of the boss in that order.

[0012] In one embodiment, a long, slot-shaped slide hole is provided in the portion of the damper pipe that is rotatably connected to the damper sleeve, a pin connection hole is provided in the second end of the damper sleeve, and a pin passes through the pin connection hole and the slide hole, thereby directly rotatably connecting the second end of the damper sleeve to the damper pipe.

[0013] In one embodiment, the damper elastic element is a tension spring, a compression spring, a hydraulic rod or a pneumatic rod acting on the damper pipe and / or the damper sleeve to generate a damping force in response to downward rotation of the damper pipe and the damper sleeve.

[0014] In one embodiment, the bracket structure of the damper device includes a damper pipe and a damper sleeve, the damper pipe abutting the underside of the seat portion and having a fixed end rotatably connected to the first pipe and a free end higher than the second pipe, the damper sleeve having a first end rotatably connected to the second pipe and a second end rotatably connected to the damper pipe, wherein the damper elastic element is a hydraulic rod or pneumatic rod forming part of the damper sleeve, and when the damper sleeve is pressed downward and rotated downward around the first pipe, the damper sleeve is driven to rotate downward around the second pipe, and a damping force is applied to the damper pipe by the hydraulic rod or pneumatic rod forming part of the damper sleeve.

[0015] In another aspect, the present disclosure also provides a stroller seat, the seat including the damper device described above.

[0016] In yet another aspect, the present disclosure also provides a stroller, the stroller comprising a frame and a seat disposed on the frame, the seat comprising the above-described damper device. A beneficial effect of the present disclosure is that the damper device of the stroller can prevent the bracket structure from rotating and delay the downward movement of the seat part, so that the stroller can achieve a better damper effect. [Brief explanation of the drawings]

[0017] The above and other objects, features, aspects, and advantages of the present disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. [Figure 1] 1 is a perspective view of a frame of a stroller using a damper device according to an embodiment of the present disclosure. FIG. [Figure 2] 2 is a perspective view of the stroller frame of FIG. 1 as seen from another angle. [Figure 3] FIG. 1 is a simplified schematic diagram of a damper device according to the present disclosure. [Figure 4] FIG. 1 is a simplified schematic diagram of a damper device according to the present disclosure. [Figure 5] FIG. 2 is a perspective view of a damper pipe in an embodiment of the damper device of the present disclosure. [Figure 6] FIG. 10 is a perspective view of a connecting sleeve in an embodiment of a damper device of the present disclosure. [Figure 7] FIG. 1 is a perspective view of a damper sleeve in an embodiment of a damper device of the present disclosure. [Figure 8] FIG. 2 is a perspective view of a damper elastic element in an embodiment of the damper device of the present disclosure. [Figure 9] 1 is a schematic cross-sectional view of the connection points of various components in an embodiment of a damper device of the present disclosure. [Figure 10] FIG. 10 is a schematic diagram of a damper device according to another embodiment of the present disclosure. [Figure 11] FIG. 10 is a schematic diagram of a damper device according to another embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, exemplary embodiments will be described in detail with reference to the drawings. Terms such as "first" and "second" may be used to describe various elements, but it will be understood that these elements are not limited to these terms. These terms are generally used only to distinguish one component from another. Furthermore, terms specifically defined in consideration of the configuration and operation of the embodiments are used only to describe the embodiments and do not limit the scope of the embodiments.

[0019] 1 and 2 show a stroller frame using a damper device according to an embodiment of the present disclosure. The stroller frame includes a seat pipe 100 for the seat and a backrest pipe for the backrest. The seat pipe 100 is a frame structure consisting of a first pipe 101, a second pipe 102, and two connecting pipes connected between them.

[0020] The damper device in the present disclosure is provided on the first pipe 101 and the second pipe 102 and is used to place the seat of a stroller on it. In this specification, the direction in which the stroller faces is defined as the forward direction, and the direction in which the stroller faces away from it is defined as the rearward direction. As shown in FIGS. 1 and 2, the first pipe 101 is a front pipe, and the second pipe 102 is a rear pipe. However, the present disclosure is not limited to this, and the first pipe 101 may be a rear pipe, and the second pipe 102 may be a front pipe. Furthermore, the first pipe 101 and the second pipe 102 may be two side pipes connecting the front pipe and the rear pipe.

[0021] The damper device includes a bracket structure rotatably connected to the first pipe 101 and the second pipe 102 and a damper elastic element 30, and the bracket structure is arranged to retard downward movement of the seat unit by elastically preventing the bracket structure from rotating relative to the first pipe 101 or the second pipe 102 with the damper elastic element 30. The present disclosure retards downward movement of the seat unit by preventing rotation of the bracket structure, enabling the stroller to achieve a more stable and gentle damper effect than a method of directly preventing downward movement of the seat by applying resistance in the vertical direction.

[0022] The bracket structure includes a damper pipe 10 and a damper sleeve 20. The damper pipe 10 and the damper sleeve 20 are connected to each other to form a bracket structure (shown in FIGS. 3 and 4) that can move up and down. The damper elastic element 30 applies a damping force to the bracket structure in response to the downward movement of the bracket structure. Before a child sits on the stroller seat, the damper elastic element 30 pushes up the bracket structure formed by the damper pipe 10 and the damper sleeve 20. After the child sits on the stroller seat, the damper pipe 10, which abuts the underside of the stroller seat, is pressed downward and rotates downward, driving the damper sleeve 20 to rotate downward. At this time, the damper elastic element 30 applies a damping force to the damper pipe 10 and / or the damper sleeve 20 to reduce vibration of the stroller seat. In particular, when a stroller is traveling on a bumpy road, a child's bottom may bounce up and down. During the fall, the damper elastic element 30 provides a good damping effect to the stroller seat, preventing the bottom from receiving excessive impact and affecting the ride comfort. Furthermore, the support strength of the seat pipe of a stroller using the damper device is sufficient. Furthermore, after the seat fabric is covered, not only can the ride comfort be further improved, but the normal service life of the seat fabric can be ensured without increasing the stress on the seat fabric.

[0023] Next, the components of the damper device will be described in detail. The damper pipe 10 has a fixed end 10a and a free end 10b. The fixed end 10a is rotatably connected to a first pipe 101, and the free end 10b is higher than a second pipe 102, so that the plane defined by the damper pipe 10 and the first pipe 101 forms a certain angle with the plane defined by the second pipe 102 and the first pipe 101. In the embodiment shown in FIG. 1, the fixed end 10a is rotatably connected to the first pipe 101 via a pipe joint 103. Of course, the fixed end 10a may also be rotatably connected directly to the first pipe 101.

[0024] The damper pipe 10 shown in Figures 1, 2, and 5 is a U-shaped pipe. The open ends of the U-shaped pipe are two fixed ends 10a, which are rotatably connected to both ends of the first pipe 101, respectively, and the other connected end is a free end 10b that is higher than the second pipe 102. The U-shaped damper pipe 10 and the first pipe 101 are generally square in shape so as to uniformly support the seat portion. Of course, the damper pipe 10 may have other shapes, such as a V-shaped pipe or a straight pipe, and the same effects as those of the damper pipe 10 can be obtained. When the damper pipe 10 is a straight pipe, its fixed end 10a is preferably rotatably connected to the center of the first pipe 101.

[0025] In order to keep the plane defined by the damper pipe 10 and the first pipe 101 at a constant angle relative to the plane defined by the second pipe 102 and the first pipe 101, the damper device 100 further includes a damper sleeve 20 which forms a bracket structure together with the damper pipe 10.

[0026] 1 , a first end 20a of the damper sleeve 20 is rotatably connected to the second pipe 102, and a second end 20b is slidably and rotatably connected to the damper pipe 10, so that when the damper pipe 10 is pushed down and rotates downward around the first pipe 101, the damper sleeve 20 is also driven to rotate downward around the second pipe 102. In this specification, "the second end 20b (of the damper sleeve 20) is slidably and rotatably connected to the damper pipe 10" means that the second end 20b of the damper sleeve 20 can slide along the damper pipe 10, and at the same time, the damper sleeve 20 can rotate about the second end 20b relative to the damper pipe 10.

[0027] The reason why the second end 20b of the damper sleeve 20 is slidably and rotatably connected to the damper pipe 10 will be explained below with reference to FIGS.

[0028] As shown in FIG. 3 , the damper sleeve 20 is rotatably connected to the damper pipe 10 via a pin 40 that penetrates the second end 20b of the damper sleeve 20. The pin 40 forms a pivot point between the damper sleeve 20 and the damper pipe 10. Since the distance between the first pipe 101 and the second pipe 102 and the spacing between the pivot point 40 and the second pipe 102 (i.e., the length of the damper sleeve 20) are constant, if the spacing between the pivot point and the first pipe 101 is also constant, the triangle formed by the first pipe 101, the second pipe 102, and the pivot point is also constant. In this case, the damper pipe 10 and the damper sleeve 20 cannot rotate, and the bracket structure formed by the damper pipe 10 and the damper sleeve 20 cannot move up or down.

[0029] Therefore, the pivot point 40 needs to be slidable relative to the damper pipe 10 so that the distance between the pivot point 40 and the first pipe 101 is variable. As shown in Figure 4, if the pivot point 40 is slidable between a first position P1 and a second position P2, the triangle formed by the first pipe 101, the second pipe 102, and the pivot point 40 is variable. In this case, the damper pipe 10 and the damper sleeve 20 can rotate, and the bracket structure formed by the damper pipe 10 and the damper sleeve 20 can move up and down to provide damping and buffering effects.

[0030] In order to make the second end 20b of the damper sleeve 20 and the pin 40 (i.e., the pivot point 40) passing through it slidable relative to the damper pipe 10, the present disclosure can employ various embodiments.

[0031] 1, the damper pipe 10 is provided with a connecting sleeve 50 that is slidable along the damper pipe 10, and the second end 20b of the damper pipe 20 is rotatably connected to the connecting sleeve 50. In this case, the second end 20b of the damper pipe 20 is indirectly rotatably connected to the damper pipe 10 via the connecting sleeve 50.

[0032] In the first embodiment of the damper device of the present disclosure, the connecting sleeve 50 is provided with a pin bore 51 (see FIG. 6) lateral to the damper pipe 10, the second end 20b of the damper pipe 20 is provided with a pin connection hole 21 (see FIG. 7), and a slot-like slide hole 11 (see FIG. 5) is provided in a portion of the damper pipe 10 surrounded by the connecting sleeve 50, and the pin 40 passes through the pin connection hole 21 of the damper sleeve 20, the pin bore 51 of the connecting sleeve 50, and the slide hole 11 of the damper pipe 10 in that order, and functions as a pivot point between the damper sleeve 20 and the damper pipe 10. Meanwhile, the pin 40 is slidable within the slot-like slide hole 11 so that the pivot point 40, i.e., the second end 20b of the damper sleeve 20, is slidable relative to the damper pipe 10.

[0033] 6 shows a connecting sleeve in the first embodiment of the damper device of the present disclosure. The connecting sleeve 50 has a damper sleeve hole 52 into which the damper pipe 10 slides, and a lateral connecting column 53 is provided on the damper pipe 10 at the position where the pin bore 51 of the connecting sleeve 50 is provided, and the pin bore 51 passes through the connecting column 53 so as to support the pin 40 after it passes through the pin bore 51.

[0034] 7 shows a damper sleeve 20 in a first embodiment of the damper device of the present disclosure, which is matched with the connecting sleeve 50 shown in FIG. 6. A second sleeve hole 22 is provided at a first end 20a of the damper sleeve 20, and a second pipe 102 passes through the second sleeve hole 22. Two limit bosses 23 are provided at a second end 20b of the damper sleeve 20, and a pin connecting hole 21 is formed passing through the two limit bosses 23. A limit groove 24 is defined between the two limit bosses 23, and the portion of the connecting sleeve 50 where the connecting column 53 is provided is housed in the limit groove 24.

[0035] In this embodiment, the pin 40 is supported by the connection column 53 of the connection sleeve 50 so that it slides within the slide hole 11 on the damper pipe 10, thereby avoiding any impact on the lifespan due to contact friction between the pin 40 and the slide hole 11.

[0036] Of course, the present disclosure is not limited thereto. In addition to the first embodiment, the damper device of the present disclosure can have a simplified structure, employing a second embodiment in which the damper pipe 10 is not provided with a connection sleeve 50. In the second embodiment with a simplified structure, a long, slot-like slide hole 11 is provided in the portion of the damper pipe 10 that is rotatably connected to the damper sleeve 20, and a pin connection hole 21 is provided in the second end 20b of the damper sleeve 20. The pin 40 passes through the pin connection hole 21 and the slide hole 11 in sequence, and functions as a pivot point between the damper sleeve 20 and the damper pipe 10. In this case, the second end 20b of the damper sleeve 20 is directly rotatably connected to the damper pipe 10.

[0037] Because the pin 40 can slide within the elongated groove-shaped slide hole 11, the second embodiment having a simplified structure also enables the second end 20b of the damper sleeve 20, i.e., the pivot point 40, to slide relative to the damper pipe 10. However, because contact friction between the pin 40 and the slide hole 11 affects the lifespan, the slide hole 11 may be coated with an abrasion-resistant coating, or may be provided with a slide block (not shown) having a slide groove that matches the shape of the slide hole 11, and the slide block is preferably made of an abrasion-resistant material.

[0038] 10 and 11 show a third embodiment of the damper device of the present disclosure, in which the damper pipe 10 does not have an elongated groove-shaped slide hole 11, but in the third embodiment, the second end 20b of the damper sleeve 20 can be slidably and rotatably connected to the damper pipe 10.

[0039] 10 and 11 , the damper pipe 10 is provided with a connecting sleeve 50 that can slide along the damper pipe 10. A boss 54 is provided at the bottom of the connecting sleeve 50, and a rotation hole is formed in the boss 54. A pin connecting hole 21 is provided at the second end 20b of the damper pipe 20, and the pin 40 passes through the pin connecting hole 21 and the rotation hole of the boss 54 in that order, functioning as a pivot point between the damper sleeve 20 and the damper pipe 10. Meanwhile, the connecting sleeve 50 and the boss 54 thereon can slide along the damper pipe 10, so that the pivot point 40, i.e., the second end 20b of the damper sleeve 20, can slide relative to the damper pipe 10.

[0040] Furthermore, the damper pipe 10 may be provided with a stopper protrusion or stopper (not shown) to limit the sliding range of the connection sleeve 50 along the damper pipe 10 .

[0041] Next, the damper elastic element 30 in the damper device 100 will be described in detail. To achieve the damping effect of the damper device 100, the damper elastic element 30 can apply a damping force to the damper pipe 10 and / or the damper sleeve 20 to slow down the downward movement of the bracket structure formed by the damper pipe 10 and the damper sleeve 20.

[0042] In the first, second and third embodiments of the damper device in the present disclosure, the damper elastic element 30 is a separate member other than the damper pipe 10 and the damper sleeve 20 .

[0043] For example, in the first embodiment of the damper device of the present invention, the damper elastic element 30 may be a torsion spring, and as shown in FIG. 8 , the torsion spring 30 has a first end which is a pressing portion 31 that acts on the damper pipe 10 and a second end which is a hook portion 32 that can engage with the engagement hole 25 of the damper sleeve 20. An annular collar ring 33 wound with the spring wire of the torsion spring 30 is provided between the pressing portion 31 and the hook portion 32 of the torsion spring 30, and the collar ring 33 may be provided on the connecting column 53 of the connecting sleeve 50.

[0044] Next, the operation of the damper device according to the present disclosure will be described in detail with reference to the first embodiment.

[0045] When the damper device is not subjected to pressure from the stroller seat, the bracket structure formed by the damper pipe 10 and the damper sleeve 20 is held in a high position by the torsion spring 30, as shown in FIG.

[0046] When the damper device is subjected to pressure from the stroller seat, the damper pipe 10 rotates downward around the first pipe 101, causing the damper sleeve 20 to rotate downward around the second pipe 102, and the connecting sleeve 50 slides along the damper pipe 10 from position P1 to position P2 (see FIG. 4). Therefore, the bracket structure formed by the damper pipe 10 and the damper sleeve 20 moves to a lower position. During this process, the torsion spring 30 applies a damping force to the damper pipe 10 and the damper sleeve 20, thereby significantly reducing the speed and strength of the bracket structure's movement to the lower position and damping the vibration of the stroller seat.

[0047] When the pressure on the damper device is damped or released, the bracket structure returns from the lowered position to the higher position by the torsion spring 30 .

[0048] FIG. 9 shows in detail the first embodiment of the damper device of the present disclosure, in which the damper pipe 10, damper sleeve 20, torsion spring 30, and connection sleeve 50 are assembled, and the torsion spring 30 applies a damping force to the connection point between the damper pipe 10 and the damper sleeve 20.

[0049] The operation of the second embodiment of the damper device of the present disclosure may be substantially the same as that of the first embodiment, except for the specific arrangement of some components. For example, the connecting sleeve 50 is not provided on the damper pipe 10, and the torsion spring 30 can be provided in another way as long as a damping force can be applied to the connection between the damper pipe and the damper sleeve 20.

[0050] Furthermore, the damper elastic element 30 is not limited to a torsion spring, and may be any of various elastic bodies capable of generating a damping force, such as a tension spring, a compression spring, a hydraulic rod, or a pneumatic rod. 10 and 11 show that the damper elastic element 30 may be a single element acting only on the damper pipe 10 or the damper sleeve 20, or may be a single element or multiple elements acting simultaneously on the damper pipe 10 and the damper sleeve 20, and may generate a damping force in response to the downward rotation of the damper pipe 10 and the damper sleeve 20.

[0051] In a fourth embodiment of the damper device according to the present disclosure, the damper elastic element is not a separate component other than the damper pipe 10 and the damper sleeve 20. For example, the damper elastic element is a hydraulic or pneumatic rod that forms part of the damper sleeve 20. One end of the hydraulic or pneumatic rod is rotatably connected to the second pipe 102, and the other end is rotatably connected to the damper pipe 10. When the damper pipe 10 is pressed downward and rotates downward around the first pipe 101, the damper sleeve 20 is driven to rotate downward around the second pipe 102, applying a damping force to the damper pipe 10 via the hydraulic or pneumatic rod that forms part of the damper sleeve 20. In this case, the damper sleeve 20 functions as both a damper sleeve and a damper elastic element, and therefore the separate damper elastic element 30 can be omitted. This embodiment reduces the number of parts in the damper device, thereby reducing costs.

[0052] A stroller using the damper device of the present invention can achieve a better damping effect and improve the comfort of children when they are riding.

[0053] It should be understood that the features of the present disclosure can be embodied in various forms without departing from the characteristics thereof, and that, unless otherwise indicated, the above embodiments are not limited to the details set forth above, but should be broadly construed within the scope defined in the appended claims. Accordingly, all modifications and variations that come within the scope and limits of the claims, or equivalents of these scopes and limits, are intended to be covered by the appended claims. [Explanation of symbols]

[0054] 10 Damper pipe 10a fixed end 10b free end 11 Slide hole 20 Damper sleeve 20a First end 20b Second end 21-pin connection hole 22 Second sleeve hole 23 Limit Boss 24 limit groove 30 Damper elastic element 31 Pressing part 40 pin, pivot point 50 Connecting sleeve 51 Pin Drilling 52 Damper sleeve hole 53 Connection Column 54 Boss 100 seat pipe 101 First Pipe 102 Second Pipe 103 Pipe Joint

Claims

1. A damper device for a stroller, which is disposed on a first pipe and a second pipe that are parallel to each other of a seat pipe of the stroller and supports a seat portion of the stroller, The damper device includes a bracket structure rotatably connected to the first pipe and the second pipe, the bracket structure being arranged such that a damper elastic element elastically prevents the bracket structure from rotating relative to the first pipe and the second pipe to retard downward movement of the seat portion. A damper device comprising:

2. The bracket structure includes a damper pipe and a damper sleeve, the damper pipe has a fixed end that abuts against the lower surface of the seat portion and is rotatably connected to the first pipe, and a free end that is higher than the second pipe, the damper sleeve has a first end rotatably connected to the second pipe and a second end slidably and rotatably connected to the damper pipe, the damper sleeve being arranged to be driven to rotate downwardly around the second pipe when the damper pipe is pushed downwardly to rotate downwardly around the first pipe; The damper elastic element is arranged such that the damper pipe and the damper sleeve are separate members, and the damper elastic element applies a damping force to the damper pipe and / or the damper sleeve when the damper pipe and the damper sleeve rotate downward.

2. The damper device according to claim 1.

3. The damper pipe is provided with a connecting sleeve that is slidable along the damper pipe, and the second end of the damper sleeve is rotatably connected to the connecting sleeve so that the second end of the damper sleeve is indirectly rotatably connected to the damper pipe.

3. The damper device according to claim 2.

4. The connecting sleeve is provided with a pin bore lateral to the damper pipe, the second end of the damper sleeve is provided with a pin connection hole, and a portion of the damper pipe surrounded by the connecting sleeve is provided with an elongated slot-shaped slide hole, and a pin passes through the pin connection hole, the pin bore and the slide hole in that order.

4. The damper device according to claim 3.

5. The connecting sleeve is provided with a damper sleeve hole through which the damper pipe slides, and a lateral connecting column is provided on the damper pipe at the position where the pin hole of the connecting sleeve is provided, and the pin hole passes through the connecting column; The first end of the damper sleeve is provided with a second sleeve hole penetrating the second pipe, and the second end of the damper sleeve is provided with two limit bosses. The pin connection hole is formed by the two limit bosses penetrating through the pin connection hole, and a limit groove is defined between the two limit bosses. The portion of the connection sleeve where the connection column is provided is accommodated in the limit groove.

5. The damper device according to claim 4.

6. The damper elastic element is a torsion spring, the first end of the torsion spring is a pressing portion that acts on the damper pipe, the second end of the torsion spring is a hook portion that engages with an engagement hole of the damper sleeve, a ring-shaped collar ring wound with a spring wire of the torsion spring is provided between the pressing portion and the hook portion, and the collar ring is provided on the connecting column of the connecting sleeve. The damper device according to any one of claims 3 to 5.

7. A boss is provided at the bottom of the connecting sleeve, a rotation hole is provided in the boss, a pin connecting hole is provided at the second end of the damper sleeve, and a pin passes through the pin connecting hole and the rotation hole of the boss in that order. The damper device according to any one of claims 3 to 6.

8. A slide hole having an elongated slot shape is provided at a portion of the damper pipe that is rotatably connected to the damper sleeve, and a pin connection hole is provided at the second end of the damper sleeve. A pin passes through the pin connection hole and the slide hole, so that the second end of the damper sleeve is directly rotatably connected to the damper pipe. A damper device according to any one of claims 2 to 7.

9. The damper elastic element is a tension spring, a compression spring, a hydraulic rod, or a pneumatic rod that acts on the damper pipe and / or the damper sleeve to generate a damping force in response to downward rotation of the damper pipe and the damper sleeve. A damper device according to any one of claims 2 to 8.

10. the bracket structure of the damper device includes a damper pipe and a damper sleeve; the damper pipe has a fixed end that abuts against the lower surface of the seat portion and is rotatably connected to the first pipe, and a free end that is higher than the second pipe, the damper sleeve has a first end rotatably connected to the second pipe and a second end rotatably connected to the damper pipe; The damper elastic element is a hydraulic rod or pneumatic rod forming a part of the damper sleeve, and when the damper sleeve is pressed downward and rotated downward around the first pipe, the damper sleeve is driven to rotate downward around the second pipe, and a damping force is applied to the damper pipe by the hydraulic rod or pneumatic rod forming a part of the damper sleeve. A damper device according to any one of claims 1 to 9.

11. The damper device according to any one of claims 1 to 10 A stroller seat characterized by:

12. A stroller including a frame and a seat attached to the frame, The seat includes the damper device according to any one of claims 1 to 10. A stroller characterized by:

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