Folding positioning mechanism and baby seat

Abstract

The invention discloses a folding positioning mechanism, which is used for locking a baby seat in an unfolded state or a folded state, and comprises a first mounting seat, a second mounting seat and a locking piece movably arranged between the first mounting seat and the second mounting seat, the first mounting seat is pivoted with the second mounting seat, and the locking piece is movably arranged between the first mounting seat and the second mounting seat. The first mounting seat is provided with a first pivoting position and a second pivoting position relative to the second mounting seat, the locking piece is provided with a positioning part, the second mounting seat is provided with a matching part, the positioning part and the matching part are clamped or unclamped, so that the first mounting seat is locked at the first pivoting position or unlocked, and the locking piece is further provided with a plurality of clamping teeth distributed in the circumferential direction. The second mounting seat is provided with a plurality of second teeth which are distributed in the circumferential direction and matched with the clamping teeth, in the axial direction of the locking piece, the positioning part faces the second mounting seat and protrudes out of the clamping teeth, and when the positioning part and the matching part are clamped to enable the first mounting seat to be locked at the first pivoting position, the clamping teeth and the second teeth of the second mounting seat are in a non-clamped state.

Description

[0001] This application is a divisional application of an invention patent application whose applicant is Mingmen Switzerland AG, with an application date of September 18, 2019, application number 201910882244.X, and invention name is "Folding positioning mechanism and baby seat". Technical Field

[0002] The invention relates to the field of baby products, and in particular to a folding and positioning mechanism arranged on a baby seat. Background Art

[0003] In order to meet the needs of consumers for practicality and portability, the frame structure of baby seats is generally designed to be foldable, so that it can be fully opened when in use, and can be folded into a smaller size when not in use for easy storage or carrying.

[0004] A general foldable frame structure requires that multiple rods such as the front legs and the rear legs of the frame be folded, and then the folded state of the front legs and the rear legs are locked by a locking device arranged between the front legs and the rear legs. However, the internal structure of the existing locking device is relatively complicated, which not only causes the overall volume of the frame to be larger after folding due to its own large volume, but also the existing locking device has defects such as poor folding stability and high production cost, and therefore cannot meet existing production needs.

[0005] In order to solve the above problems, it is necessary to provide a folding and positioning mechanism. Summary of the invention

[0006] An object of the present invention is to provide a folding and positioning mechanism with a simple structure and stable folding.

[0007] Another object of the present invention is to provide a baby seat which has a simple structure and is stable when folded.

[0008] In order to achieve the above-mentioned purpose, the present invention provides a folding and positioning mechanism, which is used to lock the baby seat in an expanded state or a folded state. The folding and positioning mechanism includes a first mounting seat, a second mounting seat and a locking member movably arranged between the first mounting seat and the second mounting seat. The first mounting seat is pivotally connected to the second mounting seat. The first mounting seat has a first pivot position relative to the second mounting seat for locking the baby seat in a folded state and a second pivot position for locking it in an expanded state. The first mounting seat is locked in the first pivot position or the second pivot position by the movement of the locking member.

[0009] Compared with the prior art, the folding and positioning mechanism of the present invention includes a first mounting seat, a second mounting seat and a locking member. The first mounting seat is pivotally connected to the second mounting seat, and the locking member and the first mounting seat pivot synchronously. Therefore, the process of the first mounting seat pivoting relative to the second mounting seat can drive the locking member to pivot relative to the first mounting seat. In other words, the position locking of the locking member can lock the pivotal connection of the first mounting seat relative to the second mounting seat. Since the locking member is movably arranged between the first mounting seat and the second mounting seat, the first mounting seat has a first pivot relative to the second mounting seat for locking the baby seat in the folded state. The foldable baby seat can be locked in the unfolded state or the folded state by the rotation of the locking member relative to the second mounting seat and the axial movement of the locking member.

[0010] Preferably, the locking member has a positioning portion, and the second mounting seat has a matching portion, and the positioning portion is engaged or unengaged with the matching portion, so that the first mounting seat is locked in the first pivot position or released.

[0011] Preferably, the locking member can move axially along the pivot axis of the first mounting seat and the second mounting seat.

[0012] Specifically, the locking member further has a locking portion, and the second mounting seat further has a matching locking portion spaced apart from the matching portion. The locking portion engages or unengages with the matching locking portion to lock the first mounting seat at the second pivot position or release the lock.

[0013] Specifically, the locking portion is a limiting protrusion formed by the locking member protruding toward the second mounting seat, the matching locking portion is a limiting groove matched with the limiting protrusion, and the positioning portion is arranged on the limiting protrusion.

[0014] Specifically, the second mounting seat also includes a positioning boss adjacent to the locking portion, the positioning boss is provided with a guide groove for the positioning portion to slide, the locking portion is arranged at one end of the guide groove, and the positioning portion is arranged at the other end of the guide groove.

[0015] Specifically, the positioning boss is formed by the second mounting seat protruding toward the first mounting seat.

[0016] Specifically, one of the positioning portion and the matching portion is a positioning protrusion, and the other of the positioning portion and the matching portion is a positioning concave.

[0017] Preferably, the folding and positioning mechanism further comprises a release button which is slidably disposed on the second mounting seat and is connected to the locking member. The locking member is locked or released by sliding the release button on the second mounting seat.

[0018] Specifically, the folding and positioning mechanism further includes an elastic member, which is disposed between the first mounting seat and the locking member. The elastic member constantly biases the locking member onto the second mounting seat and causes the release button to press against the locking member.

[0019] Specifically, the release button includes a pressing body and a contact top portion, wherein the contact top portion is formed by extending the pressing body toward the locking member, and the contact top portion is slidably inserted into the second mounting seat and pressed against the locking member.

[0020] Preferably, the locking member also has an engaging tooth, the first mounting seat is provided with a first tooth that cooperates with the engaging tooth, and the second mounting seat is provided with a second tooth that cooperates with the engaging tooth. When the first mounting seat is locked relative to the second mounting seat, the engaging tooth engages with the first tooth and the second tooth, and when the first mounting seat is released relative to the second mounting seat, the engaging tooth is separated from the second tooth.

[0021] Preferably, the second mounting seat extends toward the first mounting seat to form a sliding shaft, and the locking member has a central hole that is slidably matched with the sliding shaft.

[0022] In order to achieve the above-mentioned purpose, the present invention provides a baby seat, which includes a frame, the above-mentioned folding and positioning mechanism and a seat installed on the frame, the frame includes a front leg tube and a rear leg tube, one of the front leg tube and the rear leg tube is connected to a first mounting seat, and the other of the front leg tube and the rear leg tube is connected to a second mounting seat, so that the front leg tube and the rear leg tube are pivotally connected through the folding and positioning mechanism.

[0023] Compared with the prior art, the baby seat of the present invention includes a frame, which includes a front leg tube and a rear leg tube. The front leg tube and the rear leg tube are pivotally connected through a folding and positioning mechanism. One of the front leg tube and the rear leg tube is connected to a first mounting seat, and the other of the front leg tube and the rear leg tube is connected to a second mounting seat, thereby realizing mutual pivoting and stable folding between the front leg tube and the rear leg tube.

[0024] Preferably, a height adjustment structure is provided between the frame and the seat, and the relative height between the seat and the frame is adjusted by the height adjustment structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the baby seat of the present invention when it is in an unfolded state.

[0026] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of a baby seat with a folded positioning mechanism and in a disassembled state.

[0027] Figure 3 It is an exploded schematic diagram of the folding and positioning mechanism of the present invention when the first mounting seat is pivoted to the second pivot position relative to the second mounting seat.

[0028] Figure 4 It is an exploded schematic diagram of the folding and positioning mechanism of the present invention when the first mounting seat is pivoted to the first pivot position relative to the second mounting seat.

[0029] Figure 5 It is a three-dimensional structural schematic diagram of the locking member in the folding and positioning mechanism of the present invention.

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the second mounting seat in the folding and positioning mechanism of the present invention.

[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of the first mounting seat in the folding and positioning mechanism of the present invention. DETAILED DESCRIPTION

[0032] In order to explain the technical content, structural features and achieved effects of the present invention in detail, the following is a detailed description in conjunction with the implementation methods and the accompanying drawings.

[0033] See also Figure 1-Figure 3The present invention provides a baby seat 100, which is a common seat such as a high chair or a baby carriage. The baby seat 100 is described in detail below by taking a high chair as an example. The baby seat 100 includes a frame 10, a folding and positioning mechanism 200, and a seat 20. The seat 20 is installed on the frame 10, and the seat 20 is used to carry a baby. The frame 10 includes a front leg tube 101 and a rear leg tube 102. The front leg tube 101 and the rear leg tube 102 are pivotally connected through the folding and positioning mechanism 200 to achieve relative pivoting, folding or unfolding between the front leg tube 101 and the rear leg tube 102. The relative folding of the front leg tube 101 and the rear leg tube 102 can drive the seat 20 to fold. A height adjustment structure (not shown) is provided between the frame 10 and the seat 20, and the relative height between the seat 20 and the frame 10 is adjusted by the height adjustment structure. As for the height, the front leg tube 101, the rear leg tube 102 and the folding and positioning mechanism 200 are all set as two and arranged symmetrically. The seat 20 is slidably set on the frame 10. The relative height between the seat 20 and the frame 10 is adjusted by sliding the seat 20. The height adjustment structure includes a protrusion and a bayonet that cooperates with the protrusion. One of the seat 20 and the frame 10 is provided with a protrusion, and the other of the seat 20 and the frame 10 is provided with a bayonet. The bayonet is set at intervals. The protrusion selectively extends into any bayonet to lock the relative height between the seat 20 and the frame 10. In this embodiment, the protrusion is provided on the seat 20, and all the bayonet is opened on the frame 10 at intervals. Of course, the manufacturer can also adjust the specific structure of the height adjustment structure according to actual needs, so it is not limited to this. The seat 20 is installed between the two folding and positioning mechanisms 200.Among them, the folding and positioning mechanism 200 includes a first mounting seat 1, a second mounting seat 2 and a locking member 3. The first mounting seat 1 is pivotally connected to the second mounting seat 2. The first mounting seat 1 is located on the outside of the second mounting seat 2. The rear leg tube 102 is connected to the first mounting seat 1, and the front leg tube 101 is connected to the second mounting seat 2, so as to realize the relative pivoting and folding or unfolding between the front leg tube 101 and the rear leg tube 102. Preferably, the front leg tube 101 is sleeved with the second mounting seat 2, and the rear leg tube 102 is sleeved with the first mounting seat 1, but not limited to this; the locking member 3 pivots synchronously with the first mounting seat 1, so the locking member 3 can be driven to pivot relative to the second mounting seat 2 during the pivoting of the first mounting seat 1 relative to the second mounting seat 2. In other words, the position of the locking member 3 is locked. The first mounting seat 1 can be locked relative to the second mounting seat 2 when it is pivoted; the first mounting seat 1 and the second mounting seat 2 are pivotally connected to form a hollow cavity together, and the locking member 3 is movably arranged between the first mounting seat 1 and the second mounting seat 2, and the first mounting seat 1 is pivotally connected to the second mounting seat 2 by the movement of the locking member 3. Preferably, the second mounting seat 2 extends toward the first mounting seat 1 to form a sliding shaft 25, and the locking member 3 has a center hole 34 that slidably cooperates with the sliding shaft 25. The mutual cooperation between the center hole 34 and the sliding shaft 25 allows the locking member 3 to rotate around the pivot axis of the first mounting seat 1 and the second mounting seat 2, or move along the axial direction of the pivot axis of the first mounting seat 1 and the second mounting seat 2 (the pivot axis is as. Figure 3 As shown by the middle arrow a), since the locking member 3 is movably arranged between the first mounting seat 1 and the second mounting seat 2, the free rotation of the locking member 3 relative to the second mounting seat 2 along its pivot axis can make the first mounting seat 1 rotate relative to the second mounting seat 2, thereby adjusting the relative pivot position between the first mounting seat 1 and the second mounting seat 2. The locking member 3 cooperates with the second mounting seat 2 in the process of axial movement along its pivot axis to limit the rotation of the locking member 3 itself to achieve the locking effect of the locking member 3, thereby indirectly locking the pivot connection of the first mounting seat 1 relative to the second mounting seat 2, and utilizing the rotation and axial movement of the locking member 3 to realize the mutual pivoting and position locking between the first mounting seat 1 and the second mounting seat 2, with a simple structure and stable folding. Of course, the manufacturer can also utilize the movement of the locking member 3 in other directions to lock the pivot connection between the first mounting seat 1 and the second mounting seat 2, so it is not limited to the movement of the locking member 3 in the axial direction to achieve locking. In other embodiments, the rear leg tube 102 can also be connected to the second mounting seat 2, and the front leg tube 101 can also be connected to the first mounting seat 1, so it is not limited to this.

[0034] See also Figure 2-Figure 4The first mounting seat 1 has a first pivot position relative to the second mounting seat 2 for locking the baby seat 100 in the folded state, the locking member 3 has a positioning portion 31, and the second mounting seat 2 has a matching portion 21. The positioning portion 31 is engaged or unengaged with the matching portion 21 by the movement of the locking member 3, so that the first mounting seat 1 is locked in the first pivot position or released (the first pivot position is as shown in FIG. Figure 4 As shown), both the positioning parts 31 and the matching parts 21 are set to at least two, all the positioning parts 31 are symmetrically arranged, and all the matching parts 21 are symmetrically arranged. In this embodiment, both the positioning parts 31 and the matching parts 21 are set to two, the two positioning parts 31 are symmetrically arranged, and the two matching parts 21 are symmetrically arranged. Of course, the manufacturer adjusts the number and positions of the positioning parts 31 and the matching parts 21, so it is not limited to this. When the first mounting seat 1 is pivoted relative to the second mounting seat 2, the locking member 3 is driven by the first mounting seat 1 to rotate relative to the second mounting seat 2 along the pivot axis. When the first mounting seat 1 is pivoted relative to the second mounting seat 2 to the first pivot position, the locking member 3 moves closer to the second mounting seat 2 along the axial direction of the pivot axis, so that the positioning portion 31 on the locking member 3 is engaged with the matching portion 21 on the second mounting seat 2, thereby realizing that the locking member 3 locks the first mounting seat 1 in the first pivot position. Therefore, the front leg tube 101 and the rear leg tube 102 of the baby seat 100 can be locked in the folded position through the mutual engagement between the positioning portion 31 and the matching portion 21, thereby effectively preventing the front leg 101 and the rear leg tube 102 from automatically unfolding during the transportation process or the placement process; when the locking member 3 moves away from the second mounting seat 2 along the axial direction of the pivot axis, the positioning portion 31 on the locking member 3 is unengaged from the matching portion 21 on the second mounting seat 2, and the locking member 3 is released, so that the first mounting seat 1 can rotate freely relative to the second mounting seat 2. For example, one of the positioning portion 31 and the matching portion 21 is a positioning protrusion, and the other of the positioning portion 31 and the matching portion 21 is a positioning recess. In this embodiment, the positioning portion 31 is a positioning protrusion, and the matching portion 21 is a positioning recess. Both the positioning protrusion and the positioning recess are cylindrical, but not limited to this. It is worth noting that the engagement between the positioning portion 31 and the matching portion 21 enables the front leg tube 101 and the rear leg tube 102 to be locked in a folded state. When the height of the positioning portion 31 and the depth of the matching portion 21 are large, the release button 4 needs to be pressed to allow the positioning portion 31 of the locking member 3 to withdraw from the matching portion 21 of the second mounting seat 2, thereby achieving release. In this embodiment, the height of the positioning portion 31 and the depth of the matching portion 21 are set to be smaller, so that the front leg tube 101 and the rear leg tube 102 can be locked in a stable folded state through the engagement of the positioning portion 31 and the matching portion 21, and the cylindrical structure of the positioning protrusion and the positioning recess can be utilized so that when releasing the lock, the positioning portion 31 of the locking member 3 can be withdrawn from the matching portion 21 of the second mounting seat 2 by only human pull, thereby achieving release. Of course, release can also be achieved by pressing the release button 4, so two methods can be used to achieve release, which is convenient to operate.

[0035] See also Figure 3-Figure 6 The first mounting seat 1 has a second pivot position relative to the second mounting seat 2 for locking the baby seat 100 in the unfolded state. The arrangement of the first pivot position and the second pivot position can realize the locking of the frame 10 in the folded position and the unfolded position. The locking member 3 also has a locking portion 32, and the second mounting seat 2 also has a matching locking portion 22 that cooperates with the locking portion 32. The matching portion 21 and the matching locking portion 22 are arranged to be spaced apart. The locking portion 32 is engaged or unengaged with the matching locking portion 22 by the movement of the locking member 3, so that the first mounting seat 1 is locked in the second pivot position or released (the second pivot position is as shown in FIG. Figure 3 As shown), both the locking part 32 and the matching locking part 22 are provided with at least two, all the locking parts 32 are symmetrically provided, and all the matching locking parts 22 are symmetrically provided. In this embodiment, both the locking part 32 and the matching locking part 22 are provided with two, and the two locking parts 32 are symmetrically provided, and the two matching locking parts 22 are symmetrically provided. Of course, the manufacturer adjusts the number and position of the locking part 32 and the matching locking part 22, so it is not limited to this. When the first mounting seat 1 pivots relative to the second mounting seat 2, the locking member 3 rotates relative to the second mounting seat 2 along the pivot axis under the drive of the first mounting seat 1. When the first mounting seat 1 pivots to the second pivot position relative to the second mounting seat 2, the locking member 3 moves closer to the second mounting seat 2 along the axial direction of the pivot axis, so that the locking portion 32 on the locking member 3 engages with the matching locking portion 22 on the second mounting seat 2, thereby realizing that the locking member 3 locks the first mounting seat 1 in the second pivot position; when the locking member 3 moves away from the second mounting seat 2 along the axial direction of the pivot axis, the locking portion 32 on the locking member 3 and the matching locking portion 22 on the second mounting seat 2 are unengaged, and the locking member 3 is released so that the first mounting seat 1 can rotate freely relative to the second mounting seat 2. For example, the locking portion 32 is a limiting protrusion formed by the locking member 3 protruding toward the second mounting seat 2, the matching locking portion 22 is a limiting groove that cooperates with the limiting protrusion, and the positioning portion 31 is arranged on the limiting protrusion. The cooperation between the limiting protrusion and the limiting groove enables the first mounting seat 1 to be locked in the second pivot position.

[0036] See also Figure 3-Figure 6The second mounting seat 2 also includes a positioning boss 23 adjacent to the locking portion 22, the positioning boss 23 is formed by the second mounting seat 2 protruding toward the first mounting seat 1, and a guide groove 231 is opened on the positioning boss 23 for the positioning portion 31 to slide, the locking portion 22 is arranged at one end of the guide groove 231, and the guide groove 231 is connected to the limiting groove, and the matching portion 21 is arranged at the other end of the guide groove 231, and the setting of the positioning boss 23 can form a height difference with the limiting groove of the locking portion 22, so that the limiting protrusion can be stably engaged in the limiting groove of the locking portion 22, and the positioning boss 23 is provided with at least two, and all the positioning bosses 23 are symmetrically arranged. In this embodiment, there are two positioning bosses 23, and the two positioning bosses 23 are symmetrically arranged. Of course, the manufacturer adjusts the number and position of the positioning bosses 23, so it is not limited to this. At the same time, the guide groove 231 is connected to the limiting groove of the locking part 22, so when the limiting protrusion and the positioning part 31 on the limiting protrusion are separated from the limiting groove of the locking part 22, the positioning part 31 can slide under the guidance of the guide groove 231 and finally engage with the matching part 21. Conversely, the positioning part 31 that exits the matching part 21 can slide under the guidance of the guide groove 231 and finally make the limiting protrusion slide to the limiting groove to engage and lock. Preferably, the guide groove 231 is in an arc shape, but is not limited to this. It can be understood that the manufacturer can delete the second pivot position of the first mounting seat 1 relative to the second mounting seat 2 as needed, and correspondingly, the manufacturer can delete the locking part 32 and the locking part 22. Of course, the manufacturer can also add a third pivot position, a fourth pivot position or a fifth pivot position of the first mounting seat 1 relative to the second mounting seat 2 accordingly, so it is not limited to this.

[0037] See also Figure 3-Figure 4The folding and positioning mechanism 200 also includes a release button 4 and an elastic member 5. The release button 4 is slidably arranged on the second mounting seat 2. The release button 4 is connected to the locking member 3. The locking member 3 is locked or released by sliding the release button 4 on the second mounting seat 2. The elastic member 5 is arranged between the first mounting seat 1 and the locking member 3. The elastic member 5 constantly biases the locking member 3 against the second mounting seat 2 and makes the release button 4 and the locking member 3 elastically pressed. The release button 4 realizes the movement of the locking member 3 by pressing the locking member 3. When the first mounting seat 1 is in the first pivot position, the positioning portion 31 on the locking member 3 is pressed against the second mounting seat 2 by the elastic member 5. The matching portion 21 on the mounting seat 2 is engaged, thereby enabling the locking member 3 to lock the first mounting seat 1 in the first pivot position. When the first mounting seat 1 is in the second pivot position, the locking portion 32 on the locking member 3 is engaged with the matching locking portion 22 on the second mounting seat 2 under the pressure of the elastic member 5, thereby enabling the locking member 3 to lock the second mounting seat 2 in the second pivot position. The release button 4 enables the locking member 3 to overcome the elastic member 5 and slide in the direction away from the second mounting seat 2, so that the locking portion 32 on the locking member 3 and the matching locking portion 22 on the second mounting seat 2 are unengaged, and the locking member 3 is released so that the first mounting seat 1 can freely pivot relative to the second mounting seat 2. Specifically, the release button 4 includes a pressing body 41 and a resisting top portion 42, the resisting top portion 42 is formed by the pressing body 41 extending toward the locking member 3, the resisting top portion 42 is slidably inserted into the second mounting seat 2 and resists the locking member 3, and the resisting top portion 42 acts on the locking member 3 by driving the pressing body 41 from the outside, the structure is simple and the operation is flexible, preferably, the resisting top portion 42 is circumferentially arranged on the pressing body 41, the resisting top portion 42 is turned outward to form a blocking portion 421, and the second mounting seat 2 is provided with a limiting hole 26 corresponding to the blocking portion 421 to limit the movement of the blocking portion 421, and the limiting hole 26 is used to limit the blocking portion 421 The system is used to flexibly adjust the sliding stroke of the release button 4, and the structure is simple; the elastic member 5 is arranged between the first mounting seat 1 and the locking member 3 and is in a compressed state. The elastic member 5 constantly biases the locking member 3 onto the second mounting seat 2 and makes the release button 4 and the locking member 3 elastically pressed. The mutual cooperation between the release button 4 and the elastic member 5 can realize the movement of the locking member 3 between the first mounting seat 1 and the second mounting seat 2. The structure is simple and the operation is convenient. The first mounting seat 1 is provided with a accommodating cavity for accommodating the elastic member 5, so that the force of the elastic member 5 on the locking member 3 is more stable. Preferably, the elastic member 5 is a compression spring, but it is not limited to this.

[0038] See also Figure 4-Figure 7The locking member 3 also has a snap-fitting tooth 33. The first mounting seat 1 is provided with a first tooth 11 that matches the snap-fitting tooth 33, and the second mounting seat 2 is provided with a second tooth 24 that matches the snap-fitting tooth 33. When the first mounting seat 1 is locked relative to the second mounting seat 2 at the second pivot position, the snap-fitting tooth 33 is simultaneously engaged with the first tooth 11 and the second tooth 24 under the pressure of the elastic member 5. When the first mounting seat 1 is released relative to the second mounting seat 2 at the second pivot position, the snap-fitting tooth 33 is separated from the second tooth 24. Under the push of the unlocking button 4, the snap-fitting tooth 33 overcomes the elastic force of the elastic member 5 and exits from the second tooth 24 to be unlocked. That is, when the first mounting seat 1 is locked in the second pivot position, the engaging tooth 33 is engaged with the first tooth 11 and the second tooth 24 at the same time, and the relative positions of the first tooth 11 and the second tooth 24 are locked by the engaging tooth 33 so that the first mounting seat 1 and the second mounting seat 2 cannot pivot relative to each other, which not only assists the locking between the locking portion 32 and the matching locking portion 22, but also effectively improves the locking stability between the first mounting seat 1 and the second mounting seat 2; when the engaging tooth 33 overcomes the elastic force under the push of the release button 4, withdraws from the second tooth 24 and extends into the first tooth 11 When the first and second teeth 11 and 24 are locked, the locking teeth 33 no longer restrict the relative position of the first teeth 11 and the second teeth 24, and the locking portion and the matching portion are unlocked and the locking portion 32 and the matching portion 22 are unlocked, so that the first mounting seat 1 and the second mounting seat 2 can be relatively pivoted, thereby realizing the free pivoting between the front leg tube 101 and the rear leg tube 102, with a simple structure and flexible locking. Preferably, the locking teeth 33 are distributed in a circumference, and correspondingly, the first teeth 11 and the second teeth 24 are both distributed in a circumference, so that the locking of the locking teeth 33 is more stable. The first teeth 11 and the locking teeth 33 are always engaged to realize the synchronous pivoting between the first mounting seat 1 and the locking member 3.

[0039] In summary, please refer to Figures 1 to 7 The working process of the baby seat 100 with the folding and positioning mechanism 200 of the present invention is described in detail:

[0040] When the frame 10 is folded, the front leg tube 101 and the rear leg tube 102 are in a folded state (the first mounting seat 1 is locked in the first pivot position relative to the second mounting seat 2), and the positioning portion 31 of the locking member 3 is engaged with the matching portion 21. At this time, the locking portion 32 is pressed against the positioning boss 23. When the frame 10 needs to be unfolded, that is, the first mounting seat 1 is locked in the second pivot position relative to the second mounting seat 2, the front leg tube 101 and the rear leg tube 102 are separated by manpower so that the positioning portion 31 on the locking member 3 and the matching portion 21 on the second mounting seat 2 are unblocked, and the unlocking is completed; the relative pivoting of the front leg tube 101 and the rear leg tube 102 causes the first mounting seat 1 to pivot relative to the second mounting seat 2 to adjust the relative pivoting position of the two. The positioning portion 31 of the locking member 3 slides under the drive of the first mounting seat 1 and the guidance of the guide groove 231 and finally makes the locking portion 32 of the locking member 3 slide toward the matching locking portion 22. During this process, the engaging tooth 33 of the locking member 3 is always separated from the second tooth 24, and the elastic member 5 is always in a compressed state. At this time, the locking portion 32 corresponds to the matching locking portion 22. The convex structure of the locking member 3 extends into the groove structure of the matching locking portion 22 under the elastic pressure of the elastic member 5, so that the locking portion 32 is engaged with the matching locking portion 22, and the engaging tooth 33 of the locking member 3 is engaged with the first tooth 11 and the second tooth 24 at the same time under the pressure of the elastic member 5, so that the locking member 3 locks the first mounting seat 1 at the second pivot position to realize the expansion of the frame 10;

[0041] When the frame 10 is unfolded, the front leg tube 101 and the rear leg tube 102 are in the unfolded state (the first mounting seat 1 is locked in the second pivot position relative to the second mounting seat 2), the engaging teeth 33 of the locking member 3 are engaged with the first teeth 11 and the second teeth 24 at the same time, and the locking portion 32 of the locking member 3 is engaged with the matching locking portion 22. At this time, the protrusion structure of the locking portion 32 is located in the groove structure of the matching locking portion 22. When the frame 10 needs to be folded (that is, when the first mounting seat 1 needs to be locked in the first pivot position relative to the second mounting seat 2), the release button 4 is pressed to make the locking member 3 overcome the elastic member 5 and slide in the direction away from the second mounting seat 2, so that the protrusion of the locking member 3 The structure slides out of the groove structure of the locking portion 22 and the engaging tooth 33 of the locking member 3 withdraws from the second tooth 24, and the lock is released; the relative pivoting of the front leg tube 101 and the rear leg tube 102 makes the first mounting seat 1 pivot relative to the second mounting seat 2 to adjust the relative pivoting position of the two, and the positioning portion 31 of the locking member 3 can slide toward the matching portion 21 under the drive of the first mounting seat 1 and the guidance of the guide groove 231, and the locking member 3 slides in the direction close to the second mounting seat 2 under the elastic pressure of the elastic member 5 so that the positioning portion 31 is engaged with the matching portion 21, so that the locking member 3 locks the first mounting seat 1 in the first pivot position to realize the folding of the frame 10.

[0042] Combination Figure 1-Figure 7As shown, since the folding and positioning mechanism 200 of the present invention includes a first mounting seat 1, a second mounting seat 2 and a locking member 3, the first mounting seat 1 is pivotally connected to the second mounting seat 2, and the locking member 3 and the first mounting seat 1 pivot synchronously, the first mounting seat 1 can drive the locking member 3 to pivot relative to the first mounting seat 1 during the process of pivoting relative to the second mounting seat 2. In other words, the position locking of the locking member 3 can lock the pivoting of the first mounting seat 1 relative to the second mounting seat 2; and since the locking member 3 is movably arranged between the first mounting seat 1 and the second mounting seat 2, the first mounting seat 1 has a function of locking the baby seat 100 in the folded state relative to the second mounting seat 2. The first pivot position and the second pivot position when locked in the expanded state, the free rotation of the locking member 3 relative to the second mounting seat 2 along its pivot axis can make the first mounting seat 1 rotate relative to the second mounting seat 2, thereby adjusting the relative pivot position between the first mounting seat 1 and the second mounting seat 2, the locking member 3 cooperates with the second mounting seat 2 during the axial movement along its pivot axis to limit the rotation of the locking member 3 itself to lock, thereby indirectly locking the first mounting seat 1 in the first pivot position or the second pivot position, and then utilizing the rotation and axial movement of the locking member 3 to lock the baby seat 100 in the expanded state or the folded state, the structure is simple and the folding is stable.

[0043] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A folding and positioning mechanism for locking a baby seat in an unfolded state or a folded state, characterized in that: The invention comprises a first mounting seat, a second mounting seat and a locking member movably arranged between the first mounting seat and the second mounting seat, wherein the first mounting seat is pivotally connected to the second mounting seat, and the first mounting seat has a first pivot position and a second pivot position relative to the second mounting seat. The locking member has a positioning portion, and the second mounting seat has a matching portion. The positioning portion is engaged with or unengaged from the matching portion, so that the first mounting seat is locked in the first pivot position or released. The locking member also has a plurality of engaging teeth distributed circumferentially, and the second mounting seat is provided with a plurality of second teeth distributed circumferentially and cooperating with the engaging teeth. In the axial direction of the locking member, the positioning portion protrudes from the engaging tooth toward the second mounting seat. When the positioning portion is engaged with the matching portion so that the first mounting seat is locked at the first pivot position, the engaging tooth and the second tooth of the second mounting seat are in a non-engaged state.

2. The folding and positioning mechanism according to claim 1, characterized in that: The locking member can move axially along the pivot axis of the first mounting seat and the second mounting seat.

3. The folding and positioning mechanism according to claim 1, characterized in that: The locking member also has a locking portion, and the second mounting seat also has a matching locking portion spaced apart from the matching portion. The locking portion engages or unengages with the matching locking portion to lock the first mounting seat at the second pivot position or release the lock.

4. The folding and positioning mechanism according to claim 3, characterized in that: The locking portion is a limiting protrusion formed by the locking member protruding toward the second mounting seat, the matching locking portion is a limiting groove matched with the limiting protrusion, and the positioning portion is arranged on the limiting protrusion.

5. The folding and positioning mechanism according to claim 3, characterized in that: The second mounting seat also includes a positioning boss adjacent to the locking portion, the positioning boss is provided with a guide groove for the positioning portion to slide, the locking portion is arranged at one end of the guide groove, and the fixing portion is arranged at the other end of the guide groove.

6. The folding and positioning mechanism according to claim 5, characterized in that: The positioning boss is formed by the second mounting seat protruding toward the first mounting seat.

7. The folding and positioning mechanism according to claim 1, characterized in that: One of the positioning portion and the matching portion is a positioning protrusion, and the other of the positioning portion and the matching portion is a positioning concave.

8. The folding and positioning mechanism according to claim 1, characterized in that: It also includes a release button, which is slidably arranged on the second mounting seat. The release button is connected to the locking member, and the locking member is locked or released by sliding the release button on the second mounting seat.

9. The folding and positioning mechanism according to claim 8, characterized in that: It also includes an elastic member, which is disposed between the first mounting seat and the locking member, and the elastic member constantly biases the locking member onto the second mounting seat and causes the release button to press against the locking member.

10. The folding and positioning mechanism according to claim 8, characterized in that: The release button comprises a pressing body and a contact top portion, wherein the contact top portion is formed by extending the pressing body toward the locking member, and the contact top portion is slidably inserted into the second mounting seat and pressed against the locking member.

11. The folding and positioning mechanism according to claim 1, characterized in that: The second mounting seat extends toward the first mounting seat to form a sliding shaft, and the locking member has a central hole that is slidably matched with the sliding shaft.

12. The folding and positioning mechanism according to claim 1, characterized in that: The first mounting seat is provided with a plurality of first teeth distributed circumferentially and cooperating with the engaging teeth. When the first mounting seat is locked at the second pivot position relative to the second mounting seat, the engaging teeth engage with the first teeth and the second teeth. When the first mounting seat is released at the second pivot position relative to the second mounting seat, the engaging teeth engage with the first teeth and separate from the second teeth.

13. A baby seat, comprising a frame and a seat mounted on the frame, wherein the frame comprises a front leg tube and a rear leg tube, and wherein: It also includes a folding and positioning mechanism as described in any one of claims 1 to 12, one of the front leg tube and the rear leg tube is connected to the first mounting seat, and the other of the front leg tube and the rear leg tube is connected to the second mounting seat, so that the front leg tube and the rear leg tube are pivotally connected through the folding and positioning mechanism.

14. The baby seat according to claim 13, characterized in that: A height adjustment structure is provided between the frame and the seat, and the relative height between the seat and the frame is adjusted by the height adjustment structure.

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