GB2536526A

GB2536526A - Stroller

Info

Publication number: GB2536526A
Application number: GB1520259.1A
Authority: GB
Inventors: Ding Ze-Hua
Original assignee: Wonderland Nurserygoods Co Ltd Hong Kong
Current assignee: Wonderland Nurserygoods Co Ltd Hong Kong
Priority date: 2015-03-20
Filing date: 2015-11-17
Publication date: 2016-09-21
Anticipated expiration: 2035-11-17
Also published as: GB202017743D0; GB201520259D0; GB2588720B; GB2588720A; CN204641853U; GB2536526B

Abstract

A stroller includes a main frame 10, at least one lateral armrest 30 and a front armrest 40. The lateral armrest is disposed on a lateral side of the main frame, and has a first engaging surface 35, and a concave first engaging structure formed in the first engaging surface (figure 5). The front armrest extends in a lateral direction of the stroller, and has a second engaging structure that is formed at an end portion of the front armrest and that engages separably the first engaging structure. Due to the concave nature of the first engaging structure, each lateral armrest has no protruding parts after the front armrest is removed, and thus a child is less likely to be injured by bumping or scratching themselves on the engaging structure. Also disclosed is a removable canopy (70, figure 9) attachable to an upper end portion of the lateral armrests, and an adjustable leg rest 80 pivotally attachable to a seat plate 20a of the stroller.

Description

STROLLER

[0001] Embodiments of the present disclosure generally relate to a carrier, more particularly to a stroller.

[0002] At present, strollers have been widely used to carry a baby or child. It is well known that a front armrest of such a stroller is detachable. When a child is placed into or taken out of the stroller, the front armrest may be detached from the stroller to facilitate the child to enter or leave the stroller. When the child is seated in the stroller, the front armrest may be mounted on the stroller to protect the child seated in the stroller. However, a projecting structure for mounting the front armrest is usually provided on a conventional stroller. Therefore, after the front armrest is detached from the stroller, the child is liable to be injured by bumping or scratching due to the projecting structure. It is not safe to use the conventional stroller.

[0003] Therefore, it is desirable to provide a stroller that can overcome the abovementioned problem.

[0004] Therefore, an object of the disclosure is to provide a stroller that can overcome the aforesaid drawback associated with the prior art.

[0005] According to the disclosure, the stroller includes a main frame, at least one lateral armrest and a front armrest. The lateral armrest is disposed on a lateral side of the main frame, and has a first engaging surface, and a concave first engaging structure that is formed in the first engaging surface. The front armrest extends in a lateral direction of the stroller, and has a second engaging structure that is formed at an end portion of the front armrest and that engages separably the first engaging structure.

[0006] Other features and advantages of the disclosure will become apparent in the following detailed description of the exemplary embodiment with reference to the accompanying drawings, of which: [0007] Figure 1 is a schematic perspective view, illustrating a stroller of the disclosure after the rear supporting legs are removed; [0008] Figure 2 is a schematic view from another view angle; [0009] Figure 3 is a main view, illustrating the stroller of the disclosure after the rear supporting legs are removed; [0010] Figure 4 is a schematic exploded view after a canopy unit is removed; [0011] Figure 5 is an enlarged view of part B in Figure 4; [0012] Figure 6 is an enlarged view of part C in Figure 4; [0013] Figure 7 is a sectional view taken along line A-A in Figure 3; [0014] Figure 8 is an enlarged view of part D in Figure 7; [0015] Figure 9 is a schematic explodec view, illustrating a canopy unit of the stroller of the disclosure that is detached from the lateral armrests; [0016] Figure 10 is a sectional view, illustrating the canopy unit of the stroller of the disclosure that is mounted on the lateral armrests; [0017] Figure 11 is an enlarged view of part E in Figure 10; [0018] Figure 12 is a schematic exploded view, illustrating a leg rest of the stroller of the disclosure that is detached from a seat plate; [0019] Figure 13 is a sectional view, illustrating the leg rest of the stroller of the disclosure that is mounted on the seat plate; and [0020] Figure 14 is an enlarged view of part F in Figure 13.

[0021] Herein below, the disclosure will be further described in connection with the accompanying drawings and a preferred embodiment, but the implementation of the disclosure is not limited thereto.

[0022] With reference to Figure 1 to Figure 6, an embodiment of a stroller 100 includes a main frame 10, a pair of lateral armrests 30 and a front armrest 40. In this embodiment, the main frame 10 is configured to be foldable. The main frame 10 includes a pair of front supporting legs 12 that are connected pivotally and respectively to a pair of rear supporting legs (not shown) . The main structure of the main frame 10 may adopt a structure that is well known to a person skilled in the art, and will not be further described in detail. The main frame 10 has a pair of seat tubes 20a that are disposed respectively on the left and right sides Thereof, and the seat tubes 20a extend in a longitudinal direction of the stroller 100. Specifically, the seat tubes 20a are disposed between the front supporting legs 12 and the rear support legs. In this embodiment, a pair of lateral armrests 30 are positioned respectively on the left and right sides of the main frame 10. Since the lateral armrests 30 in this embodiment have the same structure, one lateral armrest 30 will sometimes be referred to represent either of the left and right lateral armrests 30 hereinafter. More specifically, the lateral armrest 30 further has a free upper end portion 36 and a lower end portion 37. The lower end portion 37 of the lateral armrest 30 is fixed to a front end of a respective one of the seat tubes 20a on the same side. The upper end portion 36 of the lateral armrest 30 is bent upwardly and rearwardly, and is spaced apart from the main frame 10 so that the lateral armrest 30 has an unique design and is more aesthetic. The stroller 100 of the disclosure further includes a seat plate 20b that is connected to the seat tubes 20a. The seat plate 20b is located between the seat tubes 20a. The seat plate 20b and the lateral armrests 30 on two sides define cooperatively a carry space 11 provided for a child to be seated.

[0023] Specifically, the lateral armrest 30 has a first engaging surface 35, and a concave first engaging structure (not labeled in the drawings) that is formed in the first engaging surface 35. In this embodiment, the first engaging surface 35 is the surface of the lateral armrest 30 that faces toward the carry space 11. In other embodiments, the first engaging surface 35 may be the surface of the lateral armrest 30 that faces away from from the carry space 11. In addition, the first engaging surface 35 is located between the upper end portion 36 and the lower end portion 37, and extends in a longitudinal direction of the lateral armrest 30. The front armrest 40 extends in a lateral direction of the stroller 100, and has a second engaging structure (not labeled in the drawings) that is formed at an end portion of the front armrest 40 and that engages separably the first engaging structure. Thus, the front armrest 40 is mounted detachably between the lateral armrests 30 on the left and right sides. Since the first engaging structure is concave, the lateral armrest 30 has no projecting structure after the front armrest 40 is detached from the lateral armrest 30. Therefore, the side face of the lateral armrest 30 is flat and the child will not be injured by bumping or scratching so that it is more safe for the child to sit on, enter or leave the stroller 100 of this disclosure, thereby better meeting the safe requirements of the user. The first and second engaging structures will be described more specifically in the following paragraph with reference to the drawings.

[0024] With reference to Figure 4 to Figure 6, each of the two lateral end portions of the front armrest 40 has a second engaging surface 46 and a mounting surface 45. The second engaging surface 46 and the mounting surface 45 of each of the lateral end portions of the front armrest 40 face away from each other. It is noted only one of the lateral end portions of the front armrest 40 is illustrated hereinafter. The second engaging structure protrudes outwardly from the second engaging surface 46. The first engaging surface 35 and the mounting surface 45 are substantially flush with each other when the first and second engaging structures are interengaged. Therefore, it is ensured that the first and second engaging structures at the connecting position of the front armresu_ 40 and the lateral armrest 30 may not be exposed when the front armrest 40 is mounted on the lateral armrest 30, so that, the front armrest 40 and the lateral armrest 30 can form a smooth connection, further protecting the child from being injured by bumping or scratching. On the other hand, since the first and second engaging structures have no projecting structures after being interengaged, a relatively large width may be formed between the two lateral armrests 30. More specifically, in this embodiment, the first engaging structure of the lateral armrest 30 includes a groove 31 that opens at the first engaging surface 35, and a blocking protrusion 313 that is disposed at an opening 312 of the groove 31 such that a width of an interior groove portion of the groove 31 is greater than that of the opening 312 of the groove 31. In addition, the groove 31, the opening 312 of the groove 31 and the blocking protrusion 313 are all arranged along an insertion direction of the second engaging structure (the direction indicated by the arrow X in Figure 4 and Figure 5), so that the first engaging structure can be configured as a concave structure rather than a projecting structure in order to protect the child from being injured by bumping or scratching. Correspondingly, the second engaging structure is configured as a protruding structure 41 that is formed at the end portion of the front armrest 40. That is, the protruding structure 41 protrudes from the second engaging surface 46. The protruding structure 41 has an engaging section 411, and a connecting section 412 connected between the engaging section 411 and the end portion of the front armrest 40. The connecting section 411 extends through the opening 312 of the groove 31. The engaging section 411 is retained in the interior groove portion of the groove 31 and prevented from moving relative to the lateral armrest 30 in a direction perpendicular to the first engaging surface 35 by the blocking protrusion 313. That is, the width of the engaging section 411 is larger than that of the connecting section 412. Through the blocking effect of blocking protrusion 313 on the engaging section 411, the engaging section 411 is prevented from disengaging from the opening 312 of the groove 31 when it extends through the groove 31, and the structure is more safe and reliable, so that a more firm mounting of the front armrest 40 between the two lateral armrest 30 is achieved. Furthermore, after the front armrest 40 is detached from the lateral armrest 30, the lateral armrest 30 has no projecting structure and has a smooth appearance, thereby preventing the child from being injured by bumping or scratching. Therefore, it is more safe for a child to sit on, enter or leave the stroller 100 of this embodiment. More preferably, in this embodiment, each of the lateral armrests 30 has two grooves 31 that are disposed symmetrically and that are located at the intermediate positions between the upper end portions 36 and the lower end portions 37 of the lateral armrests 30. In addition, the end portions of the front armrest 40 have two symmetrical protruding structures 41 so as to further strengthen the mounting structure of the front armrest 40 on the lateral armrests 30. The numbers of the grooves 31 and the protruding structures 41 are not limited by those shown in the drawings and, in other embodiments, can be selected according to the actual requirements.

[0025] With reference to Figure 1 and Figure 4 to Figure 8, the stroller 100 of this embodiment further includes an operating member 50. The operating member 50 is disposed movably on the front armrest 40 and is engageable with a selective one of the lateral armrests 30. When the operating member 50 is engaged into the lateral armrest 30, the protruding structure 41 is prevented from disengaging from the groove 31, Thereby preventing removal of the front armrest 40 from the lateral armrest 30. When the operating member 50 is disengaged from the lateral armrest 30, the protruding structure 41 is allowed to disengage from the groove 31, thereby allowing the front armrest 40 to be removed from the lateral armrest 30. Therefore, through the operation of the operating member 50, the front armrest 40 can be prevented from being removed from the lateral armrest 30 or allowed to be removed from the lateral armrest 30. The operation is convenient. Of course, in other embodiments, the operating member 50 may be disposed movably on the lateral armrest 30, and correspondingly, the operating member 50 maybe engageable with the front armrest 40. In this case, the front armrest 40 can be locked on or unlocked from the lateral armrest 30 to be prevented from being removed from the lateral armrest 30 or allowed to be removed from the lateral armrest 30 in a similar manner. Specifically, in this embodiment, the end portion of the front armrest 40 is formed with an installation groove 42, and more specifically, the installation groove 42 is formed in the mounting surface 45. The operating member 50 is mounted pivotally in the installation groove 42 and the pivot axis of the operating member 50 is perpendicular to the insertion direction of the protruding structure 41 (the direction indicated by the arrow X in Figure 4 and Figure 5). The lateral armrest 30 is further formed with a locking groove 32 that is located between the grooves 31. The end portion of the front armrest 40 is further formed with a through hole 43 that is in spatial communication with the installation groove 42 and the locking groove 32. The operating member 50 has a locking projection 51 that extends through the through hole 43 and engages removably the locking groove 32. When the locking projection 51 engages the locking groove 32, the protruding structure 41 is prevented from disengaging from the groove 31. when the locking projection 51 disengages from the locking groove 32, the protruding structure 41 is allowed to disengage from the groove 31. The locking groove 32 is also configured as a concave structure so that after the front armrest 40 is detached from the lateral armrest 30, the lateral armrest 30 has no projecting structure and has a smooth appearance, thereby preventing the child from being injured by bumping or scratching. A press portion 52 is formed on an end of the operating member 50 that is distal from the locking projection 51. The press portion 52 is exposed externally of the front armrest 40 so that the operating member 50 can be driven to pivot through depressing the press portion 52, resulting in a more convenient operation.

[0026] In this embodiment, the stroller 100 further includes a first resilient member 60a. The first resilient member 60a includes but is not limited by a spring. The first resilient member 60a has opposite ends respectively abutting against the front armrest 40 and the operating member 50 for biasing resiliently the operating member 50 to pivot relative to the front armrest 40 so as to engage the locking projection 51 with the locking groove 32. More specifically, the first resilient member 60a is conpressed to abut against a bottom surface of the installation groove 42 and the rear side of the press portion 52, so that the first resilient member 60a is concealed between the installation groove 42 and the press portion 52. This further ensures that the mounting surface 45 on the front armrest 40 has no projecting structure and has a smooth appearance, thereby preventing the child from being injured by bumping or scratching. When the press portion 52 is released, the operating member 50 will pivot automatically under the biasing action of the first resilient member 60a so as to engage the locking projection 51 with the locking groove 32, resulting in a more convenient and effort-saving operation.

[0027] With reference Figure 6 and Figure 8, the locking projection 51 has a first inclined face 53 formed on a lower side thereof. The first inclined face 53 is inclined upwardly toward the lateral armrest 30. When the front armrest 40 is mounted on the lateral armrest 30, the sidewall of the lateral armrest 30 will push the first inclined face 53 of the locking projection 51 to move the locking projection 51 away from the lateral armrest 30, so that the operating member 50 can pivot against the biasing action of the first resilient member 60a so as to allow the protruding structure 41 to be inserted into the groove 31 without the need to manually drive the operating member 50 to pivot, resulting in a more convenient operation.

[0028] With reference to Figure 1 and Figure 9 to Figure 11, the stroller 100 of this embodiment further includes a canopy unit 70 that is connected separably to an upper end portion 36 of the lateral armrest 30. Specifically, the canopy unit 70 includes two connecting seat 71 each having a connecting end portion 711. Only one of the connecting seats 71 will be illustrated hereinafter. The upper end portion 36 of the lateral armrest 30 is formed with a connecting groove 33. The connecting end portion 711 of the connecting seat 71 is inserted removably into the connecting groove 33 so that the canopy unit 70 is mounted removably on the upper end portion 36 of the lateral armrest 30. More specifically, the upper end portion 36 of the lateral armrest 30 further has a positioning hole 34 formed in a lateral surface of the connecting groove 33. The connecting end portion 711 of the connecting seat 71 has a positioning structure 712 that engages separably the positioning hole 34. In particular, in this embodiment, the positioning hole 34 extends in a direction perpendicular to the insertion direction of the connecting seat 71 (the direction indicated by the arrow Y in Figure 10 or Figure 11). The positioning structure 712 has a resilient arm section 712a, and a bulge section 712b that is formed on a distal end of the resilient arm section 712a and that is biased resiliently by the resilient arm section 712a to engage the positioning hole 34. When the bulge section 712b engages the positioning hole 34, the connecting end portion 711 is prevented from disengaging from the connecting groove 33. When the bulge section 712b disengages from the positioning hole 34, the connecting end portion 711 is allowed to disengage from the connecting groove 33. When the canopy unit 70 is to be removed from the lateral armrest 30, a pin member (not shown) may be inserted into the positioning hole 34 to push the bulge section 712b to disengage from the positioning hole 34, so that the connecting end portion 711 can be pulled out of the connecting groove 33 so as to remove the canopy unit 70 from the lateral armrest 30, resulting in a simple operation.

[0029] With reference to Figure 11, the bulge section 712h protrudes downwardly from the distal end of the resilient arm section 712a, and has a second inclined face 712c that is located on the front side of the bulge section 712b and that is inclined rearwardly and downwardly. When the connecting end portion 711 of the connecting seat 71 is inserted into the connecting groove 33, the sidewall of the connecting groove 33 will push the second inclined face 712c of the bulge section 712b to move the resilient arm section 712a away from the sidewall of the connecting groove 33 so as to allow the connecting end portion 711 to be inserted into the connecting groove 33, resulting in a simple operation.

[0030] With reference to Figure 12 to Figure 14, the stroller 100 of this embodiment further includes a leg rest 80 and a positioning member 90. The leg rest 80 is connected pivotally to a front end of the seat plate 20b. The leg rest 80 is rotatable about a pivot axis that extends in the lateral direction of the stroller 100. The positioning member 90 is movable relative to said leg rest 80 in a direction perpendicular to the pivoting axis of the leg rest 80. The seat plate 20b is formed with two positioning grooves 21 that are arranged about the pivot axis of the leg rest 80 (in the direction indicated by the arrow Z in Figure 13 or Figure 14). The positioning member 90 is operable to engage a selective one of the positioning grooves 21 so as to position the leg rest 80 relative to the seat plate 20b. In this way, the leg rest 80 can be positioned at different rest angles relative to the seat plate 20b as desired. Of course, in other embodiments, the positioning member 90 may be mounted movably to the seat plate 20b and the positioning grooves 21 may be disposed correspondingly on the leg rest 80 so as to position the leg rest 80 relative to the seat plate 20b. Further, the numbers of the positioning grooves 21 can be selected according to the actual requirements, and are not limited by the abovementioned embodiment.

[0031] In this embodiment, the stroller 100 further includes a second resilient member 60b that has opposite ends respectively abutting against the leg rest 80 and the positioning member 90 for biasing resiliently the positioning member 90 toward the seat plate 20b, so that the positioning member 90 can engage automatically the selective one of the positioning grooves 21, resulting in a more convenient and effort-saving operation. The second resilient member 60b is configured as, but is not limited by a spring. More specifically, the positioning member 90 has a positioning end portion 91 that is proximate to the seat plate 20b and that is engageable with any one of the positioning grooves 21, and an operating end portion 92 that is distal from the seat plate 20b and that extends downwardly and out of the leg rest 80. Therefore, a user can conveniently pull the operating end portion 92 by his/her fingers so as to disengage the positioning end portion 91 from the one of the positioning grooves 21 engaged thereto.

[0032] With reference to Figure 14, the positioning end portion 91 has a third inclined face 93 that is formed at a lower side thereof and that inclines upwardly toward the seat plate 20b. When the leg rest 80 is pivoted from an idle position (not shown) to a rest position (see Figures 13 and 14) , that is, in a direction opposite to the direction indicated by the arrow Z in Figure 14, a sidewall of the seat plate 20b will push the third inclined face 93 so as to move the positioning member 90 away from the seat plate 20b against the biasing action of the second resilient member 60b, so that the leg rest 80 can pivot until the positioning member 90 aligns with and engages one of the positioning grooves 21 due to the biasing action of the second resilient member 60b, resulting in a more convenient operation.

[0033] Next, the working principles of the stroller 100 of this embodiment will be described in detail in connection with the drawings.

[0034] (A)The mounting and separation operation principles of the front armrest 40 are as follows.

[0035] When the front armrest 40 is to be mounted on the lateral armrests 30, the front armrest 40 is moved in a direction indicated by the arrow X in Figure 4 so as to insert the protruding structures 41 of the front armrest 40 into the grooves 31 until the locking projections 51 of the operating members 50 engage the locking grooves 32 so as to prevent the protruding structures 41 from disengaging from the grooves 31. Thus, the operation for mounting the front armrest 40 on the lateral armrests 30 is completed.

[0036] When the front armrest 40 is to be separated from the lateral armrests 30, the press portions 52 of the operating members 50 are depressed to allow the operating members 50 to pivot so as to disengage the locking projections 51 respectively from the locking grooves 32. The front armrest 40 therefore can be moved in a direction opposite to the direction indicated by the arrow X in Figure 4 so as to disengage the protruding structures 41 of the front armrest 40 from the grooves 31. Thus, the operation for separating the front armrest 40 from the lateral armrests 30 is completed.

[0037] (B) The mounting and separation operation principles of the canopy unit 70 are as follows.

[0038] When the canopy unit 70 is to be mounted on the upper end portions 36 of the lateral armrests 30, the canopy unit 70 is moved in the direction indicated by the arrow Y to insert the connecting end portions 711 of the connecting seats 71 of the canopy unit 70 into the connecting grooves 33 until the bulge sections 712b of the connecting end portions 711 respectively engage the positioning holes 34 so as to prevent the connecting end portions 711 from disengaging from the connecting grooves 33. Thus, the operation for mounting the canopy unit 70 on the lateral armrests 30 is completed.

[0039] When the canopy unit 70 is to be separated from the upper end portions 36 of the lateral armrests 30, a pin member is inserted into the positioning hole 34 of each of the upper end portions 36 of the lateral armrests 30 to push the bulge sections 712b to respectively disengage from the positioning holes 34. The canopy unit 70 therefore can be moved in a direction opposite to the direction indicated by the arrow Y in Figure 10 so as to disengage the connecting end portions 711 of the connecting seats 71 of the canopy unit 70. Thus, the operation for separating the canopy unit 70 from the lateral armrests 30 is completed.

[0040] (C)The operation principles of adjusting the resting angles of the leg rest 80 are as follows.

[0041] When the leg rest 80 is pivoted from the idle position to a rest position, that is, in the direction opposite to the direction indicated by the arrow Z in Figure 14, the sidewall of the seat plate 20b will push the third inclined face 93 to move away from the seat plate 20b so as to move the positioning member 90 away from the seat plate 20b against the biasing action of the second resilient member 60b, so that the leg rest 80 can pivot until the positioning member 90 aligns with and engages one of the positioning grooves 21 due to the biasing action of the second resilient member 60h. The leg rest 80 can be further pivoted in the direction opposite to the direction indicated by the arrow Z in Figure 14 until the positioning end portion 91 engages the other one of the positioning grooves 21 to allow the leg rest 80 to reach a desired rest angle. Thus, the operation of adjusting the resting angles of the leg rest 80 is completed.

[0042] When the leg rest 80 is to be adjusted in the direction indicated by the arrow Z in Figure 14, the operating end portion 92 is pulled by fingers to disengage the positioning end portion 91 from the engaged positioning groove 21 so as to allow the leg rest 80 to pivot in the direction indicated by the arrow Z in Figure 14. The operating end portion 92 is then released when the leg rest 80 is pivoted to a desired rest angle. At this time, the positioning end portion 91 of the positioning member 90 will engage a corresponding one of the positioning grooves 21. Thus, the adjusting operation of the leg rest 80 in the direction indicated by the arrow Z in Figure 14 is completed. When the leg rest 80 is no longer in use, the operating end portion 92 is pulled again by fingers io disengage the positioning end portion 91 from the engaged positioning groove 21 so as to allow the leg rest 80 to pivot to the idle position in the direction indicated by the arrow Z in Figure 14. Finally, the operating end portion 92 is released and the adjusting operation is completed.

[0043] Since the first engaging surface 35 of each of the lateral armrests 30 of the stroller 100 of this embodiment is formed with the concave first engaging structure and each of the end portions of the front armrest 40 is formed with the second engaging structure, each of the lateral armrests 30 has no projecting structure after the front armrest 40 is detached from the lateral armrests 30. Therefore, the side faces of the lateral armrests 30 is flat and the child will not be injured by bumping or scratching so that it is more safe for the child to sit on, enter or leave the stroller 100 of this embodiment, thereby better meeting the safe requirements of the user.

Claims

CLAIMS: 1. A stroller (100) comprising: a main frame (10); at least one lateral armrest (30) disposed on a lateral side of said main frame (10) , and having a first engaging surface (35), and a concave first engaging structure that is formed in said first engaging surface (35); and a front armrest (40) extending in a lateral direction of said stroller (100), and having a second engaging structure that is formed at an end portion of said front armrest (40) and that engages separably said first engaging structure.
2. The stroller (100) as claimed in claim 1, wherein said lateral armrest (30) further has an upper end portion (36) and a lower end portion (37), said first engaging surface (35) being located between said upper and lower end portions (36, 37), and extending in a longiludinal direction of said lateral armrest (30).
3. The stroller (100) as claimed in claim 1, wherein said end portion of said front armrest (40) has a second engaging surface (46) and a mounting surface (45), said second engaging surface (46) and said mounting surface (45) face away from each other, said second engaging structure protruding outwardly from said second engaging surface (46), said first engaging surface (35) and said mounting surface (45) being substantially flush with each other when said first and second engaging structures are interengaged.
4. The stroller (100) as claimed in claim 1, further comprising a seat tube (20a) that is disposed on said main frame (10) and that extends in a longitudinal direction of said stroller (100), said lateral armrest (30) having a lower end portion (37) that is connected to a front end of said seat tube (20a).
5. The stroller (100) as claimed in claim 1, wherein said lateral armrest (30) has a free upper end portion (36) that is bent upwardly and rearwardly and that is spaced apart from said main frame (10).
6. The stroller (100) as claimed in claim 1, wherein said first engaging structure of said lateral armrest (30) includes a groove (31) that opens at said first engaging surface (35), and a blocking protrusion (313) that is disposed at an opening (312) of said groove (31) such that a width of an interior groove portion of said groove (31) is greater than that of said opening (312) of said groove (31).
7. The stroller (100) as claimed in claim 6, wherein said second engaging structure is configured as a protruding structure (41) that has an engaging section (411), and a connecting section (411) connected between said engaging section (411) and said end portion of said front armrest (40), said connecting section (411) ex-ending through said opening (312) of said groove (31), said engaging section (411) being retained in said interior groove portion of said groove (31) and being prevented from moving relative to said lateral armrest (30) in a direction perpendicular to said first engaging surface (35) by said blocking protrusion (313).
8. The stroller (100) as claimed in claim 1, further comprising an operating member (50), said end portion of said front armrest (40) being formed with an installation groove (42), and a through hole (43) that is in spatial communication with said installation groove (42), said lateral armrest (30) further being formed with a locking groove (32), said operating member (50) being mounted pivotally in said installation groove (42) and having a locking projection (51) that extends through said through hole (43) and engages removably said locking groove (32).
9. The stroller (100) as claimed in claim 8, further comprising a first resilient member (60a) that has opposite ends respectively abutting against said front armrest (40) and said operating member (50) for biasing resiliently said operating member (50) to pivot relative to said front armrest (40) so as to engage said locking projection (51) with said locking groove (32).
10. The stroller (100) as claimed in claim 1, further comprising a canopy unit (70) that is connected separably to an upper end portion (36) of said lateral armrest (30).
11. The stroller (100) as claimed in claim 10, wherein said canopy unit (70) includes a connecting seat (71) that has a connecting end portion (711), said upper end portion (36) of said lateral armrest (30) being formed with a connecting groove (33), said connecting end portion (711) of said connecting seat (71) being inserted removably into said connecting groove (33).
12. The stroller (100) as claimed in claim 11, wherein said upper end portion (36) of said lateral armrest (30) further has a positioning hole (34) formed in a lateral surface of said connecting groove (33), said connecting end portion (711) of said connecting seat (71) having a positioning structure (712) that engages separably said positioning hole (34).
13. The stroller (100) as claimed in claim 12, wherein said positioning hole (34) extends in a direction perpendicular to the insertion direction of said connecting seat (71), said positioning structure (712) having a resilient arm section (712a) , and a bulge section (712b) that is formed on a distal end of said resilient arm. section (712a) and that is biased resiliently by said resilient arm section (712a) to engage said positioning hole (34).
14. The stroller (100) as claimed in claim 1, further comprising: a seat tube (20a) disposed on said main frame (10) and extending in a longitudinal direction of said stroller (100); a seat plate (20a) connected to said seat tube (20a); a leg rest (80) connected pivotally to a front end of said seat plate (20a); and a positioning member (90) mounted movably to one of said seat tube (20a) and said leg rest (80), the other one of said seat tube (20a) and said leg rest (80) being formed with at least one positioning groove (21), said positioning member (90) being operable to engage said positioning groove (21) so as to position said leg rest (80) relative to said seat plate (20a).
15. The stroller (100) as claimed in claim 14, wherein said leg rest (80) is rotatable about a pivoting axis relative to said seat plate (20a), said seat plate (20a) being formed with at least twc of said positioning grooves (21) that are arranged about the pivoting axis of said leg rest (80), said positioning member (90) being mounted to said leg rest (80), being movable relative to said leg rest (80) in a direction perpendicular to the pivoting axis of said leg rest (80), and having a positioning end portion (91) that is proximate to said seat plate (20a) and that is engageable with any one of said positioning grooves (21), and an operating end portion (92) that is distal from said seat plate (20a) and that extends downwardly and out of said leg rest (80), said stroller (100) further comprising a second resilient member (60b) that has opposite ends respectively abutting against said leg rest (80) and said positioning member (90) for biasing resiliently said positioning member (90) toward said seat plate (20a).