BABY CHAIR

Abstract

 A baby chair has a frame (10), a lifting device (20), a chair seat (30) and a tray (40). The frame (10) has a fixing assembly (11) and a moving assembly (12). The moving assembly (12) is moveably mounted on the fixing assembly (11). The lifting device (20) is mounted on the frame (10). The lifting device (20) has a first lifting member (21), a second lifting member (22), a connecting rod (23), and a lifting controller (24). The first lifting member (21) and the second lifting member (22) coact via the connecting rod (23) and drive the chair seat (30) to move upward and downward smoothly. The lifting controller (24) is mounted on and drives the first lifting member (21). Thus, the height adjustment of the chair seat (30) of the baby chair is operated conveniently by a single hand of a user.

Description

1. Field of the Invention

[0001] The present invention relates to a baby chair, especially for a baby chair provided for convenient height adjustment of a chair seat of the baby chair.

2. Description of Related Art

[0002] Babies are always seated on a conventional baby chair at the mealtime. The conventional baby chair is capable of being put on a general-purpose chair for increasing the applicability of the conventional baby chair. The conventional baby chair has a frame, a first lifting member, a second lifting member, a seat, and a tray. The frame has a base, a first supporting assembly, and a second supporting assembly. The first supporting assembly and the second supporting assembly are mounted on the base. The first supporting assembly has a first inner tube and a first outer tube. The first inner tube is fixedly mounted on the base. The first outer tube is mounted around the first inner tube. The second supporting assembly has a second inner tube and a second outer tube. The second inner tube is fixedly mounted on the base. The second outer tube is mounted around the second inner tube. The first lifting member is mounted on the first supporting assembly for controlling the first outer tube to move upward and downward along the first inner tube. The second lifting member is mounted on the second supporting assembly for controlling the second outer tube to move upward and downward along the second inner tube. The seat is rotatably mounted between the first outer tube and the second outer tube. The tray is mounted between the first outer tube and the second outer tube.

[0003] For height adjustment of the seat of the baby chair, the first lifting member and the second lifting member are respectively controlled by two hands of a user. The first outer tube is driven by the first lifting member and moves upward and downward. The second outer tube is driven by the second lifting member and moves upward and downward. The first outer tube and the second outer tube need to coact with each other, and then the seat is moved upward and downward smoothly. Therefore, the height adjustment of the seat of the baby chair is operated inconveniently by two hands of a user.

[0004] To overcome the shortcomings, the present invention provides a baby chair to mitigate or obviate the aforementioned problems.

[0005] The main object of the present invention is to provide a baby chair; the baby chair has a frame, a lifting device, a chair seat and a tray. The frame has a fixing assembly and a moving assembly. The moving assembly is moveably mounted on the fixing assembly. The lifting device is mounted on the frame and drives the moving assembly to move upward and downward along the fixing assembly. The lifting device has a first lifting member, a second lifting member, a connecting rod and a lifting controller. The connecting rod is connected between the first lifting member and the second lifting member and is driven by the first lifting member. The connecting rod drives the second lifting member to coact with the first lifting member. The lifting controller is mounted on and drives the first lifting member. The chair seat and the tray are mounted on the moving assembly of the frame.

[0006] The baby chair can be put on a general-purpose chair and allows babies to sit. The lifting controller can be rotated by a single hand of a user. The lifting controller drives the first lifting member and the connecting rod. The connecting rod drives the second lifting member. The first lifting member and the second lifting member coact via the connecting rod and drive the chair seat to move upward and downward smoothly. Therefore, the height of the chair seat of the baby chair is conveniently adjusted by a single hand of a user.

IN THE DRAWINGS:

[0007] 

Fig. 1 is a perspective view of a baby chair in accordance with the present invention;

Fig. 2 is another perspective view of the baby chair in Fig.1;

Fig. 3 is an enlarged exploded perspective view in partial section of a first lifting member of the baby chair in Fig.1;

Fig. 4 is a front side view in partial section of a lifting device of the baby chair in Fig.1;

Fig. 5 is a side view in partial section of the lifting device of the baby chair in Fig.1, showing the first lifting member in an unmoved status;

Fig. 6 is an operational side view in partial section of the lifting device of the baby chair in Fig.1, showing the first lifting member being moved;

Fig. 7 is a rear view in partial section of the baby chair in Fig.1;

Fig. 8 is an enlarged side view in partial section of the baby chair in Fig. 7;

Fig. 9 is a side view of the baby chair in Fig.1, showing a chair seat of the baby chair in an unfolded status;

Fig. 10 is a side view in partial section of the baby chair in Fig.1, showing the chair seat of the baby chair in an unfolded status;

Fig. 11 is an enlarged exploded perspective view of a folding member and a base of the baby chair in Fig.1;

Fig. 12 is an operational side view in partial section of the baby chair in Fig.1, showing a pusher of the folding member being pushed;

Fig. 13 is an operational side view in partial section of the baby chair in Fig.1, showing a rotating seat of the folding member being rotated;

Fig. 14 is an operational side view in partial section of the baby chair in Fig.1, showing the folding member being folded;

Fig. 15 is a front view of the baby chair in Fig.1;

Fig. 16 is an enlarged side view in partial section of the baby chair in Fig. 1;

Fig. 17 is an operational side view in partial section of the baby chair in Fig. 1 showing a second button being pressed;

Fig. 18 is an end view in partial section of the baby chair along line 18-18 in Fig. 16;

Fig. 19 is an operational side view in partial section of the baby chair in Fig. 1, showing a tray detached from a fixing member of the baby chair; and

Fig. 20 is a side view of the baby chair in Fig. 1, showing the baby chair being folded.

[0008] With reference to Figs. 1 to 3, a baby chair in accordance with the present invention comprises a frame 10, a lifting device 20, a chair seat 30, and a tray 40.

[0009] The frame 10 has a fixing assembly 11 and a moving assembly 12. The moving assembly 12 is moveably mounted on the fixing assembly 11.

[0010] With reference to Figs. 3 and 4, the lifting device 20 is mounted on the frame 10 and drives the moving assembly 12 to move upward and downward along the fixing assembly 11. The lifting device 20 has a first lifting member 21, a second lifting member 22, a connecting rod 23 and a lifting controller 24. The connecting rod 23 is connected between the first lifting member 21 and the second lifting member 22. The connecting rod 23 is driven by the first lifting member 21, and then the connecting rod 23 drives the second lifting member 22. Therefore, the first lifting member 21 coacts with the second lifting member 22 via the connecting rod 23. The lifting controller 24 is mounted on and drives the first lifting member 21.

[0011] The chair seat 30 and the tray 40 are mounted on the moving assembly 12 of the frame 10.

[0012] With reference to Fig. 4, the moving assembly 12 has a shell 121. The shell 121 has a first toothed part 122 and a second toothed part 123. The first lifting member 21 has a first transverse screw 211, a first gear 212, and a first longitudinal screw 213. The first transverse screw 211 is rotatably mounted in the fixing assembly 11. Two ends of the first transverse screw 211 are connected to the connecting rod 23 and the lifting controller 24 respectively. The first gear 212 is mounted in the fixing assembly 11 and engages with the first transverse screw 211. The first longitudinal screw 213 is co-rotated with the first gear 212 and engages with the first toothed part 122 of the moving assembly 12. One of two ends of the first longitudinal screw 213 is fixedly connected to the first gear 212, and the other end of the first longitudinal screw 213 is inserted into the shell 121 of the moving assembly 12. The second lifting member 22 has a second transverse screw 221, a second gear 222, and a second longitudinal screw 223. The second transverse screw 221 is rotatably mounted in the fixing assembly 11. One end of the second transverse screw 221 is connected to the connecting rod 23. The second gear 222 is mounted in the fixing assembly 11 and engages with the second transverse screw 221. The second longitudinal screw 223 is co-rotated with the second gear 222 and engages with the second toothed part 123 of the moving assembly 12. One of two ends of the second longitudinal screw 223 is fixedly connected to the second gear 222, and the other end of the second longitudinal screw 223 is inserted into the shell 121 of the moving assembly 12.

[0013] With reference to Figs.7, 9 and 10, the shell 121 has two inner surfaces and two outer surfaces. The two inner surfaces of the shell 121 face each other. The two outer surfaces are respectively opposite to the two inner surfaces of the shell 121. The moving assembly 12 has two first holes 124, two second holes 125, two retaining portions 126, two first buttons 127, and two compression springs 129. The first holes 124 are respectively formed in the two inner surfaces of the shell 121. The second holes 125 are respectively formed in the two inner surfaces of the shell 121. The retaining portions 126 respectively protrude from the two inner surfaces of the shell 121. The first buttons 127 are respectively mounted on the two outer surfaces of the shell 121. Each first button 127 has a pillar 128. The pillar 128 is formed on a side surface of the first button 127 and is inserted into a corresponding one of the first holes 124. The compression springs 129 are respectively mounted around the pillars 128 of the first buttons 127.

[0014] With reference to Figs. 4 and 8, the chair seat 30 has two positioning assemblies 31. The positioning assemblies 31 are moveable relative to and face the two inner surfaces of the shell 121 respectively. Each positioning assembly 31 has a positioning portion 32. The positioning portion 32 is selectively inserted into a corresponding one of the first hole 124 and the second hole 125 as shown in Figs. 9 and 10. Each positioning assembly 31 has a sliding block 33, a fixing portion 34 and a first spring 35. The sliding block 33 has a chamber 36 and an end surface. The end surface of the sliding block 33 is connected to the positioning portion 32 of the positioning assembly 31. The fixing portion 34 is mounted on the chair seat 30 and inserted through the chamber 36 of the sliding block 33. The first spring 35 is mounted in the chamber 36 of the sliding block 33. Two ends of the first spring 35 are respectively connected to the sliding block 33 and the fixing portion 34.

[0015] With reference to Fig. 15, the moving assembly 12 has two fixing members 15 mounted on the shell 121. With reference to Figs. 16 to 18, each fixing member 15 has a fixing seat 151, a second button 152 and a second spring 153. The fixing seat 151 is mounted on the shell 121. The second button 152 is moveably mounted on the fixing seat 151. The second spring 153 is mounted in the fixing seat 151 and connects the fixing seat 151 and the second button 152 of the fixing member 15. The tray 40 has two covers 41. The covers 41 are respectively connected to the fixing members 15 of the moving assembly 12. Each cover 41 has a through hole 42. The second button 152 of the fixing members 15 is inserted through the through hole 42 of the cover 41.

[0016] With reference to Fig. 1, the fixing assembly 11 has a base 14 and two folding members 13. Each folding member 13 is connected to one end of the shell 121 and one end of the base 14. With reference to Fig. 11, each folding member 13 has a supporting seat 131, a rotating seat 132, a retainer 133, a torsion spring 134, a stick 135 and a pusher 136. The supporting seat 131 is connected to the shell 121 and has an engaging recess 137. The rotating seat 132 is rotatably mounted on the supporting seat 131. The retainer 133 is rotatably mounted on the rotating seat 132 and has an engaging protrusion 138 and a chute 17. The engaging protrusion 138 engages in the engaging recess 137 of the supporting seat 131. The chute 17 is formed on the retainer 133. The torsion spring 134 is mounted on the retainer 133 and connects the retainer 133 and the rotating seat 132. The stick 135 is mounted in the rotating seat 132 and has a guider inserted through the chute 17. The pusher 136 is moveably mounted on the base 14 and is connected to the stick 135 of the folding member 13.

[0017] The baby chair can be put on a general-purpose chair and allows babies to sit on the baby chair. With reference to Figs. 5 and 6, the lifting controller 24 can be turned and rotated by a single hand of a user. The lifting controller 24 drives the first transverse screw 211 of the first lifting member 21 to rotate. The first gear 212 is driven by the first transverse screw 211 to rotate. The first longitudinal screw 213 is co-rotated with the first gear 212 and drives the first toothed part 122 of the moving assembly 12. The first toothed part 122 of the moving assembly 12 moves upward and downward along the first longitudinal screw 213. In addition, the connecting rod 23 and the first gear 212 are driven by the first transverse screw 211 simultaneously. The second transverse screw 221 of the second lifting member 22 is driven by the connecting rod 23 and drives the second gear 222. The second longitudinal screw 223 is co-rotated with the second gear 222 and drives the second toothed part 123 of the moving assembly 12. The second toothed part 123 of the moving assembly 12 moves upward and downward along the second longitudinal screw 223. The first transverse screw 211 and the second transverse screw 221 are co-rotated via the connecting rod 23. The first toothed part 122 and the second toothed part 123 can be moved upward and downward synchronously. Therefore, the moving assembly 12 is moved relative to the fixing assembly 11 smoothly.

[0018] In the folding operation of the baby chair, the chair seat 30 is rotated, and then the frame 10 is folded, and then the tray 40 is detached from the frame 10.

[0019] With reference to Figs. 7 to 9, the positioning portion 32 of each positioning assembly 31 is inserted into a corresponding one of the first holes 124 of the moving assembly 12. The chair seat 30 abuts on the retaining portions 126 of the moving assembly 12. In the folding operation of the chair seat 30, the first buttons 127 are pressed by two hands of a user, and the pillars 128 of the first buttons 127 respectively push the positioning portions 32 inserted into the first holes 124. The positioning portions 32 are moved out of the first holes 124, and the chair seat 30 can be pivoted. With reference to Fig. 10, the positioning portions 32 are respectively inserted into the second holes 125 for positioning the chair seat 30 in a folded status.

[0020] With reference to Fig. 12, in each folding member 13, the engaging protrusion 138 of the retainer 133 is inserted into the engaging recess 137 of the supporting seat 131. In the folding operation of the folding members 13, the pushers 136 are pushed by two hands of a user. In each folding member 13, the stick 135 is moved by the pusher 136 and pulls the retainer 133 to rotate. With reference to Figs. 13 and 14, the engaging protrusion 138 of the retainer 133 of the folding member 13 is rotated out of the engaging recess 137 of the supporting seat 131 of the folding member 13. The positioned state between the supporting seat 131 and the retainer 133 is released. The rotating seat 132 of the folding member 13 can be rotated relative to the supporting seat 131 of the folding member 13. The base 14 connected to the rotating seat 132 of the folding member 13 is pivoted. Therefore, the frame 10 is folded by the folding members 13.

[0021] With reference to Figs. 16 and 18, the tray 40 is mounted on the moving assembly 12 of the frame 10. The second button 152 of each fixing member 15 is inserted into a corresponding one of the through holes 42 of the covers 41 of the tray 40. The tray 40 is fixed on the moving assembly 12 of the frame 10. With reference to Figs. 17 and 19, when the second button 152 of the fixing member 15 is pressed and moved out of the through hole 42 of the cover 41, the tray 40 can be pushed upward. The cover 41 of the tray 40 is moved out of the fixing seat 151 of the fixing member 15. The tray 40 is detached from the moving assembly 12 of the frame 10. With reference to Fig. 20, the folding operation of the baby chair is easy.

[0022] Accordingly, the first lifting member 21 and the second lifting member 22 coact via the connecting rod 23 and drive the chair seat 30 to move upward and downward smoothly. The height of the chair seat 30 of the baby chair is conveniently adjusted by a single hand of a user.

Claims

1. A baby chair characterized in that the baby chair comprises:

a frame (10) having

a fixing assembly (11); and

a moving assembly (12) moveably mounted on the fixing assembly (11);

a lifting device (20) mounted on the frame (10), driving the moving assembly (12) to move upward and downward along the fixing assembly (11), and having

a first lifting member (21);

a second lifting member (22);

a connecting rod (23) connected between the first lifting member (21) and the second lifting member (22) and driven by the first lifting member (21), and the connecting rod (23) driving the second lifting member (22) to coact with the first lifting member (21); and

a lifting controller (24) mounted on and driving the first lifting member (21);

a chair seat (30) mounted on the moving assembly (12) of the frame (10); and

a tray (40) mounted on the moving assembly (12) of the frame (10).

2. The baby chair as claimed in claim 1, wherein
the moving assembly (12) has

a shell (121) having a first toothed part (122), a second toothed part (123), and two ends;

the first lifting member (21) has

a first transverse screw (211) rotatably mounted in the fixing assembly (11) and two ends of the first transverse screw (211) connected to the connecting rod (23) and the lifting controller (24) respectively;

a first gear (212) mounted in the fixing assembly (11) and engaging with the first transverse screw (211); and

a first longitudinal screw (213) corotated with the first gear (212), engaging with the first toothed part (122) of the moving assembly (12), and having

two ends, one of the ends of the first longitudinal screw (213) fixedly connected to the first gear (212), and the other end of the first longitudinal screw (213) inserted into the shell (121) of the moving assembly (12); and

the second lifting member (22) has

a second transverse screw (221) rotatably mounted in the fixing assembly (11) and one end of the second transverse screw (221) connected to the connecting rod (23);

a second gear (222) mounted in the fixing assembly (11) and engaging with the second transverse screw (221); and

a second longitudinal screw (223) corotated with the second gear (222), engaging with the second toothed part (123) of the moving assembly (12), and having

two ends, one of the ends of the second longitudinal screw (223) fixedly connected to the second gear (222), and the other end of the second longitudinal screw (223) inserted into the shell (121) of the moving assembly (12).

3. The baby chair as claimed in claim 2, wherein
the shell (121) has

two inner surfaces facing each other; and

two outer surfaces respectively opposite to the inner surfaces of the shell (121);

the moving assembly (12) has

two first holes (124) respectively formed in the two inner surfaces of the shell (121);

two second holes (125) respectively formed in the two inner surfaces of the shell (121);

two retaining portions (126) respectively protruding from the two inner surfaces of the shell (121); and

two first buttons (127) respectively mounted on the two outer surfaces of the shell (121) and each first button (127) having

a pillar (128) formed on a side surface of the first button (127) and inserted into a corresponding one of the first holes (124); and

the chair seat (30) has

two positioning assemblies (31) respectively facing the two inner surfaces of the shell (121) and being moveable, and each positioning assembly (31) having

a positioning portion (32) inserted selectively into a corresponding one of the first hole (124) and the second hole (125).

4. The baby chair as claimed in claim 3, wherein
each positioning assembly (31) has

a sliding block (33) having

a chamber (36); and

an end surface connected to the positioning portion (32) of the positioning assembly (31);

a fixing portion (34) mounted on the chair seat (30) and inserted through the chamber (36) of the sliding block (33);

a first spring (35) mounted in the chamber (36) of the sliding block (33), and two ends of the first spring (35) respectively connected to the sliding block (33) and the fixing portion (34).

5. The baby chair as claimed in any one of claims 2 to 4, wherein
the moving assembly (12) has

two fixing members (15) mounted on the shell (121) and each fixing member (15) having

a fixing seat (151) mounted on the shell (121);

a second button (152) moveably mounted on the fixing seat (151); and

a second spring (153) mounted in the fixing seat (151) and connecting the fixing seat (151) and the second button (152) of the fixing member (15); and

the tray (40) has

two covers (41) respectively connected to the fixing members (15) of the moving assembly (12), and each cover (41) having

a through hole (42), and the second button (152) of the fixing members (15) inserted through the through hole (42) of the cover (41).

6. The baby chair as claimed in any one of claims 2 to 5, wherein
the fixing assembly (11) has

a base (14) having two ends;

two folding members (13), each folding member (13) connected to one of the ends of the shell (121) and one of the ends of the base (14) and having

a supporting seat (131) connected to the shell (121) and having an engaging recess (137);

a rotating seat (132) rotatably mounted on the supporting seat (131);

a retainer (133) rotatably mounted on the rotating seat (132) and having

an engaging protrusion (138) engaged in the engaging recess (137) of the supporting seat (131); and

a chute (17) formed on the retainer (133);

a torsion spring (134) mounted on the retainer (133) and connecting the retainer (133) and the rotating seat (132);

a stick (135) mounted in the rotating seat (132) and having

a guider inserted through the chute (17); and

a pusher (136) moveably mounted on the base (14) and connected to the stick (135) of the folding member (13).

Drawing