CN102689645B - Baby carriage and frame folding mechanism thereof - Google Patents

Abstract

The invention discloses a frame folding mechanism which is assembled on a baby carriage and comprises a first folding part, a second folding part, a pull handle part, a clamping piece and a first elastic piece, wherein the first folding part is pivoted with the second folding part, the pull handle part is pivoted with the second folding part, one end of the clamping piece is clamped with the first folding part and the second folding part, the other end of the clamping piece is abutted against the pull handle part and moves under the driving of the pull handle part, and two ends of the first elastic piece are abutted against the second folding part and the clamping piece respectively. Compared with the prior art, the frame folding mechanism is simple, convenient and quick to operate, scientific and reasonable in design, capable of being produced in large scale and not prone to damage. The invention also discloses a baby carriage.

Description

Stroller and its frame retractable mechanism

technical field

The invention relates to the field of children's products, and more specifically relates to a stroller and a frame folding mechanism thereof.

Background technique

In the design of the current stroller frame structure, in order to meet the practicality and portability required by consumers, the stroller frame is generally designed to be foldable, so that it can be opened into a stroller when in use. When not in use, it can be folded into a smaller volume for easy storage or portability.

In order to realize the above-mentioned collapsible function, the stroller generally includes a collapsible mechanism. There are many kinds of existing folding mechanisms, but some structures are too complicated, which is not conducive to mass production, and the folding process can only be completed with the cooperation of both hands or multiple people during operation, which causes great inconvenience to users. At the same time, an overly complex structure is also prone to erroneous operations. However, some folding mechanisms are too simple, and are easily damaged by continuous folding, thereby affecting the service life of the folding mechanism.

Therefore, there is an urgent need to provide a frame retractable mechanism that can be produced in large quantities, is easy to operate, and is not easily damaged to overcome the above-mentioned defects.

Contents of the invention

The purpose of the present invention is to provide a frame folding mechanism, which can unfold or fold the stroller with one hand, is easy and quick to operate, scientific and reasonable in design, can be mass-produced and is not easy to be damaged.

Another object of the present invention is to provide a stroller, which includes a frame retractable mechanism, which can be used to unfold or fold the stroller with one hand, with simple and quick operation, scientific and reasonable design, and Mass produced and not easily damaged.

In order to achieve the above object, the present invention provides a frame retractable mechanism, which is assembled on the stroller, and includes a first retractable part, a second retractable part, a handle part, an engaging part and a first elastic part. The first receiving part is pivotally connected to the second receiving part, the handle part is pivotally connected to the second receiving part, and one end of the engaging part is connected to the first receiving part and the second receiving part. The two receiving parts are engaged, and the two ends of the first elastic member are in contact with the second receiving part and the engaging member respectively, and the other end of the engaging member is in contact with the handle and Driven by the handle.

Compared with the prior art, the handle is operated to drive the engaging part to move, so as to realize the engaging and separating of the engaging part and the first receiving part and the second receiving part, so that The first receiving part and the second receiving part can pivot mutually, thereby realizing the unfolding and folding of the stroller. The baby carriage can be unfolded or folded with one hand by using the frame folding mechanism, the operation is simple and quick, the design is scientific and reasonable, and it can be mass-produced and not easily damaged.

Preferably, the frame retracting mechanism further includes an operating member, the operating member is installed on the second receiving portion, and one end of the operating member engages with the first receiving portion. The setting of the operating member can play a further locking role when the baby carriage is opened or folded, so as to better ensure the stability of the baby carriage when opened or folded.

In a preferred embodiment of the present invention, the frame retracting mechanism further includes a second elastic member, and two ends of the second elastic member respectively resist the second retracting portion and the handle portion.

Specifically, the first folding part includes a first rotating plastic, a first insert, a first connecting plastic and a first fixing plastic, and the first rotating plastic is connected to the second collecting part and can be relatively The second retracting part pivots, the first insertion piece is installed on the first connecting plastic, the first connecting plastic is connected to the first rotating plastic, and the first fixing plastic is in the form of a sleeve type, and engage with the first connecting plastic.

Specifically, the first rotating plastic has a plurality of first engaging holes and second engaging holes, the plurality of first engaging holes are arranged in a circle, and the engaging member and the first engaging holes are and the operating member is engaged with the second engaging hole.

Specifically, the second folding part includes a second rotating plastic, a second insert, a second connecting plastic and a second fixing plastic, the second rotating plastic is connected to the first collecting part, and the One side of the second rotating plastic is in contact with the first elastic member, the second insertion piece is installed on the second connecting plastic, the second connecting plastic is connected with the second rotating plastic, and the second fixing The plastic is in the shape of a sleeve and engaged with the second connecting plastic, and the operating part is installed on the second rotating plastic.

Specifically, the second folding part also includes a lower cover, the lower cover is installed on the second rotating plastic, the operating part can move up and down relative to the second rotating plastic, and the operating part moves downward Mobile can be accommodated in the lower cover.

Specifically, the operating part includes a button, a fixing part, a locking part and a third elastic part, the fixing part passes through the button and the locking part, two protrusions are arranged on the lower cover, and the fixing part The two ends of the two protrusions respectively resist the two protrusions, one end of the third elastic member is installed on one end of the locking member, the other end of the third elastic member resists the second rotating plastic, and the other end of the locking member One end is engaged with the second engaging hole.

Specifically, the button has a long slot, and the fixing member passes through the long slot.

Specifically, the engaging member includes an engaging protrusion and a slope, the second rotating plastic has a third engaging hole, and the engaging protrusion is inserted into or withdrawn from the third engaging hole and the first engaging hole. hole, and the slope is in contact with the pull handle.

Specifically, the pull handle has a pushing projection, and the pushing projection is in contact with the inclined surface and slides along the inclined surface to drive the engaging member to move.

Correspondingly, the present invention also provides a baby stroller, including front feet and rear feet, the front feet and rear feet are folded and unfolded by a frame folding mechanism, wherein, the front feet and rear feet respectively include a front cross bar and a A rear cross bar, the vehicle frame retracting mechanism is installed on the front cross bar and the rear cross bar.

The present invention will become clearer through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention.

Description of drawings

Fig. 1 is a view showing the expanded state of the frame of an embodiment of the stroller of the present invention.

Fig. 2 is a view of the collapsed state of the vehicle frame shown in Fig. 1 .

Fig. 3 is a perspective view of an embodiment of the frame retracting mechanism of the present invention.

FIG. 4 is a partially exploded view of FIG. 3 .

FIG. 5 is a perspective view of another angle of the handle shown in FIG. 4 .

FIG. 6 is an exploded view of the first receiving portion shown in FIG. 4 .

FIG. 7 is an exploded view of FIG. 3 except for the first receiving portion and the handle portion.

Fig. 8 is a partial sectional view along line A-A in Fig. 3, wherein the handle is in a locked state.

Fig. 9 shows the handle shown in Fig. 8 in the unlocked state.

Fig. 10 is a cross-sectional view along line B-B in Fig. 3, wherein the operating member is in a locked state.

Fig. 11 shows that the operating member shown in Fig. 10 is in an unlocked state.

Fig. 12 is a schematic diagram of the operating member used as a retracting hook after the frame retracting mechanism shown in Fig. 3 is retracted.

Detailed ways

Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.

Please refer to FIG. 1 and FIG. 2 , an embodiment of the stroller 200 of the present invention includes a frame 30 , a plurality of wheel sets 40 and a frame folding mechanism 100 . The vehicle frame 30 includes a front foot 301 , a rear foot 302 , a push bar 303 , a pivot mechanism 304 , and a seat frame 305 . The front legs 301 and the rear legs 302 are folded and unfolded by the frame retracting mechanism 100 . The plurality of wheel sets 40 are mounted on the front feet 301 and the rear feet 302, the rear feet 302 are pivotally connected to the push bar 303, and the pivot ends of the rear legs 302 and the push bar 303 are connected to the pivot. One end of the pivot mechanism 304 is pivotally connected, the other end of the pivot mechanism 304 is pivotally connected to the seat frame 305 , and the front leg 301 is pivotally connected to the rear leg 302 . The front foot 301 includes a front crossbar 306 , the rear foot 302 includes a rear crossbar 307 , and the frame folding mechanism 100 is installed on the front crossbar 306 and the rear crossbar 307 .

Specifically, referring to FIG. 3 and FIG. 4 , the frame retractable mechanism 100 includes a first retractable portion 10, a second retractable portion 12, a handle portion 14, an engaging member 16, a first elastic member 18, a second Two elastic parts 20 and an operating part 22, the first receiving part 10 is pivotally connected to the second receiving part 12, the handle part 14 is pivotally connected to the second receiving part 12, the card One end of the engaging part 16 engages with the first receiving part 10 and the second receiving part 12, and the other end of the engaging part 16 interferes with the handle part 14 and is on the handle part 14. Driven to move, the two ends of the first elastic member 18 are in contact with the second receiving portion 12 and the engaging member 16 respectively, and the two ends of the second elastic member 20 are in contact with the second receiving portion 10 and the engaging member 16 respectively. Referring to the handle portion 14 , the operating member 22 is mounted on the second receiving portion 12 , and one end of the operating member 22 engages with the first receiving portion 10 .

4 and 5, the second receiving portion 12 has a third engaging hole 121a and a boss 121b, the engaging member 16 and the first elastic member 18 are both sleeved on the boss 121b, and the two ends of the first elastic member 18 are in contact with the inner wall of the second receiving portion 12 and the engaging member 16 respectively. The engaging member 16 includes an engaging protrusion 161 and an inclined surface 162 , the pull handle portion 14 has a pushing protrusion 141 , and the pushing protrusion 141 resists the inclined surface 162 . When the handle portion 14 pivots relative to the second retracting portion 12 , the pushing protrusion 141 slides along the slope 162 , thereby driving the engaging protrusion 161 to enter and exit the third engaging hole. 121a to complete the locking and unlocking of the handle portion 14.

Specifically, please refer to FIG. 6 again, the first folding part 10 specifically includes a first rotating plastic 101, a first insertion piece 102, a first connecting plastic 103, and a first fixing plastic 104. The first rotating plastic 101 It is connected with the second collection part 12 and can pivot relative to the second collection part 12. The first insertion piece 102 is installed on the first connecting plastic 103, and the first connecting plastic 103 is mounted on the first rotating plastic 101 , and the first fixing plastic 104 is sleeve-shaped and engages with the first connecting plastic 103 . When the frame retractable mechanism 100 is installed on the frame 30, both the first connecting plastic 103 and the first fixing plastic 104 are fitted on the front crossbar 306, and the first fixing The plastic 104 is located in the middle of the first connecting plastic 103 . The setting of the first fixing plastic 104 prevents the frame folding mechanism 100 from sliding left and right along the front crossbar 306 when installed on the frame 30 .

Specifically, as shown in FIG. 6 , the end of the first rotating plastic 101 away from the first connecting plastic 103 has a plurality of first engaging holes 101 a and second engaging holes 101 b, and the plurality of first engaging holes 101 a The engaging holes 101a are arranged in a circle, and the operation member 22 is engaged with the second engaging holes 101b. 4 and 6, when the first collection part 10 and the second collection part 12 are connected, one end of the first collection part 10 close to the second collection part 12 is covered by the second The receiving portion 12 covers, and the engaging protrusion 161 passes through the third engaging hole 121 a and the first engaging hole 101 a in sequence.

Referring to FIG. 7 again, the second folding part 12 includes a second rotating plastic 121, a second insert 122, a second connecting plastic 123, a second fixing plastic 124 and a lower cover 125. The second rotating plastic 121 It is connected with the first rotating plastic 101 of the first receiving part 10 and can pivot relative to the first receiving part 10. One side of the second rotating plastic 121 is provided with the third locking The hole 121a and the boss 121b, the second insertion piece 122 is installed on the second connecting plastic 123, the second connecting plastic 123 is installed on the second rotating plastic 121, and the second fixing plastic 124 is sleeve-shaped and engages with the second connecting plastic 123 , and the lower cover 125 is installed on the second rotating plastic 121 . The second rotating plastic 121 is also provided with a mounting hole 121c, and the lower cover 125 is provided with a receiving cavity 125a, the operating member 22 is installed on the second rotating plastic 121 through the mounting hole 121c, and the The operating member 22 can move up and down, and can be accommodated in the receiving cavity 125a when the operating member 22 moves downward. When the frame retractable mechanism 100 is installed on the frame 30, the second connecting plastic 123 and the second fixing plastic 124 are fitted on the rear cross bar 307, and the second fixing The plastic 124 is located in the middle of the second connecting plastic 123 . The setting of the second fixing plastic 124 prevents the frame folding mechanism 100 from sliding left and right along the rear cross bar 307 when installed on the frame 30 .

Specifically, as shown in FIG. 7, the operating member 22 includes a button 221, a fixing member 222, a locking member 223 and a third elastic member 224, and the fixing member 222 passes through the button 221 and the locking member 223, The lower cover 125 is also provided with two protrusions 125b, the two protrusions 125b are located on both sides of the receiving cavity 125a, the two ends of the fixing member 22 respectively resist the two protrusions 125b, the third elastic member 224 is installed on one end of the locking member 223, the other end of the third elastic member 224 is in contact with the second rotating plastic 121, and the other end of the locking member 223 is engaged with the second engaging hole 101b. combine.

Specifically, the button 221 has a long slot 221a, and the fixing member 222 passes through the long slot 221a so that the button 221 can move up and down relative to the second rotating plastic 121 .

Referring to FIG. 3 and FIG. 8, when the handle portion 14 is in the locked state, the first engaging hole 101a of the first rotating plastic 101 is aligned with the third engaging hole 121a of the second rotating plastic 121 , the engaging protrusion 161 of the engaging member 16 extends into the third engaging hole 121a and the first engaging hole 101a, and the pushing protrusion 141 of the handle 14 is connected to the engaging member 16. When the highest point 162 a of the slope 162 contacts, the first elastic member 18 is compressed and blocked by the engaging member 16 .

To release the lock, rotate the pull handle 14 shown in FIG. 8 , so that the pushing projection 141 contacts the lowest point 162 b of the inclined surface 162 of the engaging member 16 . Afterwards, under the action of the first elastic member 18, the engaging projection 161 of the engaging member 16 is pushed out of the first engaging hole 101a, thereby completing the unlocking process of the handle portion 14, achieving The state shown in Figure 9.

Referring again to FIG. 3 and FIG. 10 , when the operating member 22 is in the locked state, one end of the locking member 223 of the operating member 22 is inserted into a second engaging hole 101 b of the first rotating plastic 101 , The third elastic member 224 of the operating member 22 is in a natural state.

To release the lock, press the button 221 shown in Figure 10 downwards, and due to the setting of the long groove 221a, one end of the locking member 223 will withdraw from a second engaging hole 101b, thereby completing the operation The unlocking process of the member 22, that is, the state shown in FIG. 11 , at this time, the third elastic member 224 is in a compressed state. Please refer to FIG. 12 again. After the frame retractable mechanism 100 is rotated and folded, the locking member 223 enters the other first rotating plastic 101 under the action of the third elastic member 224. The two engagement holes 101b serve as retractable hooks.

The working principle of the present invention is as follows: when the stroller 200 is in the open state, the handle portion 14 is in the locked state, that is, the engaging protrusion 161 of the engaging member 16 enters the first rotating plastic 101 In the first engaging hole 101a and the third engaging hole 121a of the second rotating plastic 121, the pushing projection 141 of the pull handle 14 is in contact with the highest point 161a of the slope 161 of the engaging member 16; The operating member 22 is in a locked state, that is, one end of the locking member 223 is inserted into a second engaging hole 101b of the first rotating plastic 101, and the third elastic member 224 of the operating member 22 is in a natural state. . When the baby carriage 200 needs to be folded, the handle part 14 is first rotated, and under the action of the first elastic member 18, the engaging protrusion 161 is withdrawn from the first engaging hole 101a, so that Complete the unlocking process of the handle portion 14; then press the button 221 downwards, so that one end of the locking member 223 exits a second engaging hole 101b, so as to complete the unlocking of the operating member 22 process; after that, lift the handle part 14 upwards, so that the first collection part 10 and the second collection part 12 pivot, and at the same time, the two front feet 301, two rear feet 302, and the pivot mechanism 304, the push bar 303 and the seat frame 305 all pivot together, so that the seat frame 305, the push bar 303, the two front legs 301 and the two rear legs 302 are close to each other to complete the retraction of the vehicle frame 30. Finally, under the action of the third elastic member 224, one end of the locking member 223 is pushed into the other second engaging hole 101b of the first rotating plastic 101 to achieve a retractable The function of the hook can better ensure the stability of the stroller 200 when it is in the folded state.

It can be seen from the above description that the stroller 200 can be unfolded or folded with one hand by using the frame folding mechanism 100 , the operation is simple and fast, the design is scientific and reasonable, and it can be mass-produced and not easily damaged.

The present invention has been described above in conjunction with the best embodiments, but the present invention is not limited to the above-disclosed embodiments, but should cover various modifications and equivalent combinations made according to the essence of the present invention.

Claims (20)

1. A frame retractable mechanism assembled on a stroller, characterized in that: the frame retractable mechanism includes a first retractable part, a second retractable part, a handle part, a snap-fit part and a first An elastic member, the first receiving part is pivotally connected to the second receiving part, the handle part is pivotally connected to the second receiving part, and one end of the engaging part is connected to the first receiving part. The two ends of the first elastic member are in contact with the second receiving portion and the engaging member respectively, and the other end of the engaging member is in contact with the handle and Driven by the pull handle part, the first retracting part includes a first rotating plastic, a first insertion piece, a first connecting plastic and a first fixing plastic, the first rotating plastic and the second The retractable part is connected and can pivot relative to the second retractable part. The first insertion piece is installed on the first connecting plastic, and the first connecting plastic is connected to the first rotating plastic. The first fixing plastic is sleeve-shaped, and engages with the first connecting plastic. 2. The frame retractable mechanism according to claim 1, characterized in that: the frame retractable mechanism further comprises an operating member, the operating member is installed on the second retractable part, and the operating One end of the piece is engaged with the first receiving portion. 3. The frame retractable mechanism according to claim 2, characterized in that: the frame retractable mechanism further comprises a second elastic member, and the two ends of the second elastic member respectively resist the second retractable portion and the handle portion. 4. The frame retracting mechanism according to claim 2 or 3, wherein the first rotating plastic has a plurality of first engaging holes and second engaging holes, and the plurality of first engaging holes The holes are arranged in a circle, the engaging member is engaged with the first engaging hole, and the operating member is engaged with the second engaging hole. 5. The frame retractable mechanism according to claim 4, wherein the second retractable part comprises a second rotating plastic, a second insertion piece, a second connecting plastic and a second fixing plastic, and the first Two rotating plastics are connected with the first collection part, and one side of the second rotating plastics is in contact with the first elastic member, the second insertion piece is installed on the second connecting plastics, and the second The connecting plastic is connected to the second rotating plastic, the second fixing plastic is sleeve-shaped, and engages with the second connecting plastic, and the operating part is installed on the second rotating plastic. 6. The frame retractable mechanism according to claim 5, wherein the second retractable part further includes a lower cover, the lower cover is installed on the second rotating plastic, and the operating part can be Relative to the second rotating plastic moving up and down, the operating member moves down and can be accommodated in the lower cover. 7. The frame retractable mechanism according to claim 6, wherein the operating member comprises a button, a fixing member, a locking member and a third elastic member, and the fixing member passes through the button and the locking member. The lower cover is provided with two protrusions, the two ends of the fixing member respectively resist the two protrusions, one end of the third elastic member is installed on one end of the locking member, and the third elastic member The other end is in contact with the second rotating plastic, and the other end of the locking member engages with the second engaging hole. 8. The vehicle frame retractable mechanism according to claim 7, wherein the button has a long slot, and the fixing member passes through the long slot. 9. The frame folding mechanism according to claim 5, wherein the engaging member includes an engaging protrusion and an inclined surface, the second rotating plastic has a third engaging hole, and the engaging protrusion is inserted into Or withdraw from the third locking hole and the first locking hole, and the inclined surface is in contact with the handle portion. 10. The vehicle frame retracting mechanism according to claim 9, characterized in that: the pull handle has a pushing protrusion, and the pushing protrusion touches the inclined surface and slides along the inclined surface to drive the The clip movement. 11. A stroller, comprising a front foot and a rear foot, the front foot and the rear foot are folded and unfolded by a frame folding mechanism, and it is characterized in that: the front foot and the rear foot respectively include a front cross bar and a rear cross bar , the frame retracting mechanism is installed on the front crossbar and the rear crossbar, and the frame retracting mechanism includes a first retractable part, a second retractable part, a pull handle part, an engaging part and a second An elastic member, the first receiving part is pivotally connected to the second receiving part, the handle part is pivotally connected to the second receiving part, one end of the engaging part is connected to the first receiving part The retractable part is engaged with the second retractable part, and the two ends of the first elastic member are in contact with the second retractable part and the engaging part respectively, and the other end of the engaging member is in contact with the handle part and move under the driving of the handle part, the first retracting part includes a first rotating plastic, a first insertion piece, a first connecting plastic and a first fixing plastic, the first rotating plastic and the first rotating plastic The two receiving parts are connected and can pivot relative to the second receiving part, the first insertion piece is installed on the first connecting plastic, and the first connecting plastic is connected to the first rotating plastic, The first fixing plastic is sleeve-shaped, and engages with the first connecting plastic. 12. The stroller according to claim 11, characterized in that: the frame retractable mechanism further comprises an operating part, the operating part is installed on the second storage part, and one end of the operating part Engaged with the first receiving part. 13. The baby stroller according to claim 12, wherein the frame retracting mechanism further comprises a second elastic member, and the two ends of the second elastic member respectively resist the second retracting portion and the Describe the handle. 14. The stroller according to claim 12 or 13, wherein the first rotating plastic has a plurality of first engaging holes and second engaging holes, and the plurality of first engaging holes are arranged in a circle , the engaging member engages with the first engaging hole, and the operating member engages with the second engaging hole. 15. The stroller according to claim 14, wherein the second receiving part comprises a second rotating plastic, a second insertion piece, a second connecting plastic and a second fixing plastic, and the second rotating plastic It is connected with the first collection part, and one side of the second rotating plastic is in contact with the first elastic member, the second insertion piece is installed on the second connecting plastic, and the second connecting plastic is connected to the second connecting plastic. The second rotating plastic is connected, the second fixing plastic is sleeve-shaped, and engages with the second connecting plastic, and the operating member is installed on the second rotating plastic. 16. The stroller according to claim 15, characterized in that: the second receiving part further includes a lower cover, the lower cover is installed on the second rotating plastic, and the operating part can be opposite to the The second rotating plastic moves up and down, and the operating part moves down to be accommodated in the lower cover. 17. The stroller as claimed in claim 16, wherein the operating part comprises a button, a fixing part, a locking part and a third elastic part, and the fixing part passes through the button and the locking part, so that The lower cover is provided with two protrusions, and the two ends of the fixing member are in contact with the two protrusions, one end of the third elastic member is installed on one end of the locking member, and the other end of the third elastic member is in contact with the two protrusions. The second rotating plastic, the other end of the locking piece engages with the second engaging hole. 18. The stroller according to claim 17, characterized in that: the button has a long slot, and the fixing member passes through the long slot. 19. The stroller according to claim 15, wherein the engaging member includes an engaging protrusion and an inclined surface, the second rotating plastic has a third engaging hole, and the engaging protrusion is inserted into or withdrawn from the The third engaging hole and the first engaging hole, the inclined surface is in contact with the pull handle. 20. The baby stroller as claimed in claim 19, wherein the pull handle has a pushing projection, and the pushing projection touches the inclined surface and slides along the inclined surface to drive the engaging member sports.

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