Baby carrier for infants and toddlers with an improved adjustment mechanism

Abstract

Baby carrier for infants and toddlers with an improved adjustment mechanism, including: a support body; a rail element that is arranged on the support body; a sliding element that is connected to the rail element and is able to slide linearly with respect to the rail element; a guide sliding element arranged on the sliding element, wherein the rail element is in rolling contact with the guide sliding element during linear sliding of the sliding element relative to the rail element; and a positioning element arranged between the rail element and the sliding element and configured to fix a position of the sliding element after linear sliding of the sliding element relative to the rail element, wherein a support foot (3) is arranged on a front face of the support body, the rail element is arranged on the support foot (3), the sliding element is arranged at least partially in the rail element, the rail element has an end piece (311) located away from the support body, a through hole (312) extending from the end piece (311) is arranged in the rail element, the sliding element has a connecting end (321) and a stop end (322) at two different ends, the connecting end (321) is provided with the guide sliding element which is inserted from the end piece (311) into the through hole (312) to be connected to the rail element;and the stop end (322) is exposed from the rail element, wherein the guide sliding element comprises a fixed base (33) and a plurality of balls (34), the fixed base (33) is fixedly arranged on the connecting end (321), the fixed base (33) comprises a plurality of receiving grooves (331) arranged along a circumference of the fixed base (33), the plurality of balls (34) are mounted in the plurality of receiving grooves (331) along the circumference of the fixed base (33), and the connecting end (321) is in rolling contact with an inner wall of the rail element by means of the plurality of balls (34).

Description

[0001] The present disclosure provides a carrier for infants and toddlers, and in particular a carrier for infants and toddlers with an improved adjustment mechanism.

[0002] Carriers for infants and toddlers, such as a car seat mounted in the back for infants to lie down in or toddlers to ride in, or a stroller, cot, and highchair, are usually equipped with an adjustment mechanism, such as the armrests of a stroller or the footrests of cots and highchairs. Regarding car seats, in addition to the conventional version where the car seat is secured with seat belts in the back of the car, there are also car seats equipped with a support leg at the front of a base, with a connecting arm with an ISOFIX connector on each of the two sides at the back of the base.The safety seat can be quickly and stably positioned on the rear seat of the vehicle by snapping the connecting arms into the slots, which are also the ISOFIX connectors, and extending the support leg to be placed on the footrest between the front seat and the rear seat of the vehicle.

[0003] The support leg of the aforementioned base consists primarily of an outer tube and an inner tube. The outer tube is fitted over the inner tube, and the two tubes are able to slide relative to each other. In this case, one surface of the inner tube is rigidly connected to the outer tube, resulting in sliding contact between the surfaces. This, in turn, creates significant frictional resistance as the outer tube slides relative to the inner tube. Consequently, the inner tube can easily become stuck and cannot be extended and retracted smoothly. This situation occurs not only at the base of the aforementioned safety seat but also at the adjustment mechanisms found on carriers for infants and toddlers, such as the aforementioned stroller, crib, or high chair.

[0004] Further adjustment mechanisms are known from CN 204 821 215 U and DE 10 2015 212 769 B4.

[0005] The object of the present invention is to solve the problems mentioned above. The present invention solves this object with the objects having the features of claims 1, 7 and 9.

[0006] Accordingly, the inventor dedicated all his efforts to research and then developed a carrier for infants and toddlers with an improved adjustment mechanism, and the adjustment mechanism of the carrier for infants and toddlers can achieve the purpose of low-friction gliding.

[0007] The present disclosure provides a carrier for infants and toddlers with an improved adjustment mechanism comprising a carrier body, a rail element, a sliding element, a guide sliding element, and a positioning element. The rail element is arranged on the carrier body. The sliding element is connected to the rail element and can slide linearly with respect to the rail element. The guide sliding element is arranged either on the rail element or on the sliding element, and during linear sliding, the sliding element is in rolling contact with the guide sliding element relative to the rail element. The positioning element is arranged between the rail element and the sliding element. The positioning element is configured to fix a position of the sliding element after the sliding element has linearly slid with respect to the rail element.

[0008] According to the invention, a support foot is arranged on a front side of the support body. The rail element is arranged on the support foot. The sliding element is at least partially arranged in the rail element. The rail element has an end piece facing away from the support body. A through-hole extending from the end piece is arranged in the rail element. The sliding element comprises a connecting end and a stop end at two different ends. The connecting end is provided with the guide sliding element, which is inserted from the end piece into the through-hole to connect to the rail element. The stop end is exposed by the rail element.

[0009] According to the invention, the guide sliding element comprises a fixed base and a plurality of balls. The fixed base is fixedly arranged at the connecting end. The fixed base includes a plurality of receiving grooves arranged along its circumference. The multiple balls are mounted in the multiple receiving grooves along the circumference of the fixed base. The connecting end is in rolling contact with an inner wall of the rail element via the plurality of balls.

[0010] In one preferred embodiment, the fixed base is formed in one piece and comprises a coupling section and an annular section. The annular section is located at one end of the coupling section and projects laterally. The multiple receiving grooves are arranged along a circumference of the annular section. Each receiving groove contains an oil reservoir reserved for mounting each of the balls. The oil reservoir is configured to store lubricating oil, which provides additional lubrication when the mounted balls are in rolling contact with the inner wall.

[0011] In one of the preferred embodiments, the coupling section is firmly connected to the connecting end by means of a shaft element extending through the coupling section and the connecting end.

[0012] In one of the preferred embodiments, the end piece is provided with an end sleeve that extends into the through hole to block the connecting end in the through hole, so that the connecting end in the through hole is prevented from coming out of the rail element of the end piece.

[0013] In one preferred embodiment, the positioning element comprises a tube base and a fastening element. The tube base is attached to the end piece. The fastening element is movably mounted on the tube base. The sliding element has a plurality of fastening holes spaced at intervals along a longitudinal direction of the sliding element. When an extension length of the sliding element is set relative to the rail element, and the sliding element slides linearly into a selected position, the fastening element is secured to the fastening hole at the corresponding position.

[0014] In one preferred embodiment, the fastening element is pivotably connected to the tube base by a shaft element extending through the fastening element and the tube base. The fastening element comprises an engagement section and a rocker arm section. The engagement section is configured to correspond to or engage with each of the fastening holes. The rocker arm section is positioned differently from the engagement section. An elastic return element is slid onto the shaft element. One end of the elastic return element rests against the tube base, and another end rests against the rocker arm section. When the rocker arm section is switched, the elastic return element is compressed to generate an elastic return force.When the rocker arm section is released, the rocker arm section is pushed back by the elastic restoring force, so that the engagement section is reset to engage with the mounting hole at the appropriate position.

[0015] In one of the alternative embodiments, the support body comprises a support frame. Each of the two sides of the support frame is provided with a rail element and a sliding element that can slide relative to the support frame. Each of the two sliding elements is provided with a connecting arm that has an ISOFIX connector at one end on the same side. Each of the sliding elements is inserted through the corresponding rail element and is linearly displaceable.

[0016] According to the invention, each of the rail elements is provided with a guide sliding element. Each guide sliding element comprises a fixed base and a plurality of balls. The fixed base is rigidly connected to the rail element. The fixed base includes a plurality of receiving grooves that are uniformly distributed on one side surface of the fixed base. The multiple balls are each arranged in the receiving grooves. Due to the plurality of balls, each of the rail elements is in rolling contact with an outer wall of the sliding element inserted through the rail element.

[0017] In one preferred embodiment, the two sliding elements each have a plurality of limit holes arranged at intervals along a longitudinal direction of the respective sliding element. The positioning element is a stop pin belonging to each of the sliding elements. As each of the sliding elements slides linearly into a selected position relative to the rail element through which the sliding element is inserted, the stop pin is inserted into the limit hole at a corresponding position for stopping and positioning.

[0018] In one of the alternative embodiments, the support body is provided with a support frame on its underside. The support frame comprises a pair of rail elements. A support foot is arranged on a front side of the support body. The support foot comprises a pair of sliding elements. The pair of sliding elements is slid onto the pair of rail elements and can slide linearly.

[0019] According to the invention, each of the rail elements is provided with a guide sliding element. Each guide sliding element comprises a fixed base and a plurality of balls. The fixed base is elongated and attached to a frontal section of the support frame. The fixed base comprises a plurality of receiving grooves arranged in a straight line along a side surface of the fixed base. The multiple balls are each mounted in the receiving grooves, such that each of the rail elements is in rolling contact with an inner wall of the sliding element into which the rail element is inserted, via the multiple balls.

[0020] In this way, the infant and toddler carrier of the present disclosure improves the adjustment mechanism, i.e., when the sliding element slides linearly with respect to the rail element, the sliding element is in rolling contact with the rail element by providing the guide sliding element, which can effectively reduce the resistance between the sliding element and the rail element due to friction in order to achieve that the sliding element can slide smoothly on the corresponding rail element. Brief description of the drawings

[0021] To better illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings used in the description of the embodiments are briefly presented below. The accompanying drawings in the following description illustrate only some embodiments of the present application. Those skilled in the art can derive other drawings from these without any creative effort. Fig. Figure 1 is a perspective view of a safety seat according to a particular embodiment of the present disclosure. Fig. Figure 2 is a partial exploded view of a first set of adjustment mechanisms according to an embodiment of the present disclosure. Fig. Figure 3 is a cross-sectional view along line 3-3 of Fig. 1. Fig. 4 is a cross-sectional view along a line 4-4 of Fig. 1. Fig. Figure 5 is a schematic view showing the extension and retraction of a support foot of the first set of adjustment mechanisms according to the present embodiment. Fig. Figure 6 is a perspective view of a second set of adjustment mechanisms and a third set of adjustment mechanisms arranged on the underside of a base according to a particular embodiment of the present disclosure. Fig. Figure 7 is an exploded view of the second set of adjustment mechanisms according to an embodiment of the present disclosure. Fig. Figure 8 is a cross-sectional view of the second set of adjustment mechanisms according to an embodiment of the present disclosure. Fig. Figure 9 is a schematic view showing a support foot and a connecting arm extended from a base according to a particular embodiment of the present disclosure. Fig. Figure 10 is an exploded view of the third set of adjustment mechanisms according to an embodiment of the present disclosure. Fig. Figure 11 is a schematic cross-sectional view along line 11-11 of Fig. 6. Fig. Figure 12 is a schematic view showing a snap lock raised for locking and positioning when the support foot is removed. Fig. 9 is extended from the base. Fig. 13 is a partial cross-sectional view along a line 13-13 of Fig. 12. Fig. Figure 14 is a perspective view of a baby carriage according to another embodiment of the present disclosure. Fig. Figure 15 is a perspective view of a crib according to another embodiment of the present disclosure. Fig. Figure 16 is a perspective view of a child's chair according to another embodiment of the present disclosure. List of reference symbols: 1 safety seat; 2 Basis; 3 support legs; 31 Outer tube; 311 End piece; 312 Through hole; 313 Interior wall; 32 inner tube; 321 End of connection; 322 End of stop; 323 Mounting hole; 33 fixed base; 331 recordings; 331a Oil storage room; 332 Coupling section; 333 Ring section; 34 balls; 35 shaft element; 36 End sleeve; 37 Pipe base; 38 Fastening element; 381 Intervention section; 382 Rocker arm section; 39 shaft element; 30 elastic return element; 4 connecting arm; 41 Guide sleeve; 42 Sliding tube; 421 Exterior wall; 422 Boundary hole; 43 fixed base; 431 recordings; 44 balls; 45 Stop pin; 46 Connecting rod; 5 support frames; 51 Frontal section; 52 fixed base; 521 recordings; 53 balls; 6 sliding sleeve; 61 Interior wall; 62 bargains; 621 Compression spring; 63 Tension spring; 7 strollers; 71 Outer tube; 72 Inner tube; 8 children's bed; 81 Outer tube; 82 Inner tube; 9 children's chair; 91 Outer tube; 92 inner tube. Detailed description of the embodiments

[0022] The present disclosure provides a carrier for infants and toddlers with an improved adjustment mechanism comprising a carrier body, a rail element, a guide slide element, and a positioning element. The rail element is arranged on the carrier body. Optionally, the rail element is fixedly or movably attached to the carrier body. The slide element is connected to the rail element and can slide linearly with respect to the rail element. The guide slide element is arranged either on the rail element or on the slide element. During linear sliding, the slide element is in rolling contact with the guide slide element relative to the rail element. The positioning element is arranged between the rail element and the slide element. The positioning element is suitable for fixing a position of the slide element after the slide element has slid linearly with respect to the rail element.

[0023] The infant and toddler carrier with an improved adjustment mechanism of the present disclosure generally refers to a carrier used by infants and toddlers, such as safety seats, strollers, cribs, or high chairs, all of which belong to the infant and toddler carriers of the present disclosure, which are set forth here for clarification. In order to fully understand the subject matter, features, and effects of the present disclosure, the safety seat is taken as a specific embodiment in conjunction with the accompanying drawings of the description to describe the present disclosure in detail, and the description is as follows.

[0024] Firstly, regarding Fig. 1, the support body is a base 2 of a safety seat 1 in this embodiment. A support leg 3 is arranged at the front of the base 2, and each of the two sides of the rear of the base 2 is provided with a connecting arm 4 with an ISOFIX connector. The underside of the base 2 is provided with a support frame 5 (as shown in Fig. (Figure 6). In this embodiment, the safety seat 1, together with the base 2, can be installed on a rear seat of a car (not shown in the figure). In this case, the two connecting arms 4 are extended from the base 2 to engage in a slot (not shown in the figure), which is also the ISOFIX connector on the rear seat of the car; and the support leg 3 is extended to be placed on the footrest between the front and rear seats of the car, so that the safety seat 1 is positioned on the rear seat of the car.In the safety seat 1 according to the specific embodiment of the present disclosure, the base 2 of the safety seat 1 comprises three sets of adjustment mechanisms, including a first set of adjustment mechanisms by which the support leg 3 itself can be extended and retracted, a second set of adjustment mechanisms by which the connecting arm 4 can be extended and retracted relative to the base 2, and a third set of adjustment mechanisms by which the support leg 3 can be extended and retracted relative to the base 2. Embodiments of the present disclosure that describe these adjustment mechanisms are explained in more detail below. embodiment of the first set of adjustment mechanisms

[0025] The Fig. 2, Fig. 3, Fig. 4 to Fig. Figure 5 shows an embodiment of the first set of adjustment mechanisms. In this embodiment, the support foot 3 comprises an outer tube 31 and an inner tube 32, the outer tube 31 being used as a rail element and the inner tube 32 as a sliding element. The outer tube 31 includes an end piece 311, which is the end of the outer tube 31 furthest from the base 2. A through-hole 312 is arranged in the outer tube 31. The through-hole 312 extends into the outer tube 31 from the end piece 311. The inner tube 32 comprises a connecting end 321 and a stop end 322 at two different ends. The connecting end 321 is provided with a guide sliding element that is inserted from the end piece 311 into the through-hole 312 to connect with the outer tube 31 (as shown in Figure 5). Fig. 3 and Fig. 4 shown). That is, the inner tube 32 is at least partially arranged inside the outer tube 31. The stop end 322 is free towards the outer tube 31 (as shown in Fig. 5 shown).

[0026] In the embodiment of the first set of adjustment mechanisms, the guide sliding element comprises a fixed base 33 and a plurality of balls 34. The fixed base 33 is fixedly arranged on the connecting end 321 of the inner tube 32. The fixed base 33 has a plurality of receiving grooves 331. The multiple receiving grooves 331 are arranged along the circumference of the fixed base 33 (as shown in Fig. (2 shown). The multiple balls 34 are mounted in the respective receiving groove 331 along the circumference of the fixed base 33. Each of the balls 34 can rotate freely in the respective receiving groove 331. When the connecting end 321 is inserted from the end piece 311 into the through hole 312 to be connected to the outer tube 31, the connecting end 321 is in rolling contact with an inner wall 313 of the outer tube 31 due to the plurality of balls 34, and the inner tube 32 is extended and retracted relative to the outer tube 31 and slides linearly (as shown in Fig. 5), i.e., the inner tube 32 is pulled out of the outer tube 31 and placed on the footrest between the front seat and the rear seat of the vehicle; or when the inner tube 32 is retracted into the outer tube 31 (e.g., when the safety seat 1 is not in use), the inner tube 32 is in rolling friction with the inner wall 313 of the outer tube 31 by means of the plurality of balls 34 to achieve the effect of smooth sliding.

[0027] As described above, the fixed base 33 of this embodiment is, as shown in the Fig. 2 and Fig. Figure 3 shows a single-piece coupling section 332 and an annular section 333. In this embodiment, the coupling section 332 is rigidly connected to the connecting end 321 by a shaft element 35 extending through the coupling section 332 and the connecting end 321. The annular section 333 is located at one end of the coupling section 332. The annular section 333 projects laterally from the coupling section 332. The receiving grooves 331 are arranged along the circumference of the annular section 333. In this embodiment, each receiving groove 331 includes an oil storage chamber 331a (as shown in Figure 3). Fig. (3 shown). The oil storage chamber 331a is suitable for storing pre-filled lubricating oil and thereby providing auxiliary lubrication when the multiple balls 34 are in rolling contact with the inner wall 313. In addition, in this embodiment, an end sleeve 36 is arranged on the end piece 311 of the outer tube 31, and the end sleeve 36 extends into the through-hole 312, so that the end sleeve 36 blocks the connecting end 321 in the through-hole 312 and prevents the connecting end 321 from emerging from the outer tube 31 at the end piece 311.

[0028] In the embodiment of the first set of adjustment mechanisms, the positioning element comprises a tube base 37 and a fastening element 38. As in the Fig. 2 and Fig. As shown in Figure 4, the tube base 37 is attached to the end piece 311 of the outer tube 31, and the fastening element 38 is movably arranged on the tube base 37. The inner tube 32 has a plurality of fastening holes 323. The majority of the fastening holes 323 are arranged at intervals along a longitudinal direction of the inner tube 32. When an extension length of the inner tube 32 relative to the outer tube 31 is set and the inner tube 32 slides linearly into a selected position, the fastening element 38 can be attached to the fastening hole 323 at the corresponding position, so that the length of the inner tube 32 protruding from the outer tube 31 can be fixed at the selected position.

[0029] In this embodiment, the fastening element 38 is pivotably connected to the tube base 37 by a shaft element 39 extending through the fastening element 38 and the tube base 37, such that the fastening element 38 is pivotable with the shaft element 39 as its center. The fastening element 38 comprises an engagement section 381 and a rocker arm section 382. The engagement section 381 corresponds to the mounting holes 323 and can be engaged with each of them. The rocker arm section 382 is arranged in a different position than the engagement section 381. In this embodiment, an elastic return element 30 is slid onto the shaft element 39. In this embodiment, the elastic return element 30 is a torsion spring. One end of the elastic return element 30 rests against the tube base 37, and another end of the elastic return element 30 rests against the rocker arm section 382.When the rocker arm section 382 is actuated, the elastic return element 30 is compressed to generate an elastic return force. When the rocker arm section 382 is released, the elastic return force pushes the rocker arm section 382 back, so that the engagement section 381 is reset to engage with the mounting hole at the corresponding position. embodiment of the second set of adjustment mechanisms

[0030] In this embodiment, each of the two sides of the support frame 5 is provided with a guide sleeve 41 and a sliding tube 42, the guide sleeve 41 serving as a rail element and the sliding tube 42 as a sliding element. The two sliding tubes 42 are each provided with connecting arms 4, which have the ISOFIX opening at their ends on the same side. Each of the sliding tubes 42 is inserted through the corresponding guide sleeve 41 and is linearly displaceable. As shown in the Fig. 7 and Fig. As shown in Figure 8, each of the guide sleeves 41 is provided with a guide sliding element. In this embodiment, each guide sliding element comprises a fixed base 43 and a plurality of balls 44. The fixed base 43 is fixed within the guide sleeve 41. The fixed base 43 comprises a plurality of receiving grooves 431, which are evenly distributed on the side faces of the fixed base 43. The multiple balls 44 are each mounted in the multiple receiving grooves 431. Each of the guide sleeves 41 and an outer wall 421 of the sliding tubes 42 inserted through the guide sleeve 41 are in rolling contact with the plurality of balls 44. When the sliding tube 42 slides linearly with respect to the guide sleeve 41, i.e., when the sliding tube 42 is pulled out of the guide sleeve 41 and the connecting arm 4 at one end of the sliding tubes 42 engages in a slot on the rear seat of the vehicle, which is also an ISOFIX connector (as in Fig. 9); or when the sliding tubes 42 are retracted relative to the guide sleeve 41 (e.g. when the safety seat 1 is not in use), the outer wall 421 of the sliding tube 42 is in rolling friction with the guide sleeve 41 by means of the balls 44 to achieve the smooth sliding effect.

[0031] In the embodiment of the second set of adjustment mechanisms, each of the two sliding tubes 42 has a plurality of limiting holes 422. The multiple limiting holes 422 of each sliding tube 42 are arranged at intervals along a longitudinal direction of the sliding tube 42. In this embodiment, the positioning element is a stop pin 45 corresponding to each sliding tube 42. When each of the sliding tubes 42 slides linearly into a selected position with respect to the guide sleeve 41 through which the sliding tube 42 is inserted, the two sliding tubes 42 slide linearly to extend or retract the connecting arm 4. That is, the sliding tube 42 is blocked by the insertion of the stop pin 45 into the limiting hole 422 and positioned in the selected position. Furthermore, in this embodiment, the two sliding tubes 42 are connected by a connecting rod 46 (as in Fig. (shown in Figure 6) are connected to enable synchronous linear sliding. The connecting rod 46 is slidably arranged on the support frame 5. embodiment of the third set of adjustment mechanisms

[0032] The Fig. 10, Fig. 11, Fig. 12 to Fig. Figure 13 shows an embodiment of the third set of adjustment mechanisms. In this embodiment, the support frame 5 comprises a pair of front sections 51 and the support foot 3 a pair of sliding sleeves 6. In this embodiment, the front section 51 of the support frame 5 is used as a rail element and the sliding sleeve 6 of the support foot 3 is used as a sliding element. The pair of sliding sleeves 6 is slid onto the pair of front sections 51 and is linearly displaceable. Each of the front sections 51 is provided with the guide sliding element. In this embodiment, each guide sliding element comprises a fixed base 52 and a plurality of balls 53. The fixed base 52 is elongated and attached to the front section 51. The fixed base 52 has a substantially C-shaped cross-section. The fixed base 52 includes a plurality of receiving grooves 521.In this embodiment, the multiple receiving grooves 521 are arranged in a straight line along a surface of a bottom surface of the fixed base 52. The multiple balls 53 are each mounted in the receiving grooves 521, such that each frontal section 51 and an inner wall 61 of the sleeve 6, into which the frontal section 51 is inserted, are in rolling contact with the multiple balls 53 on the bottom surface of the fixed base 52 (as in ). Fig. 11). If the pair of sliding sleeves 6 slides linearly with respect to the pair of frontal sections 51, i.e., when the support foot 3 is pulled out of the base 2 in use (as in Fig. (as shown in Figure 9) or when retracted relative to the base 2 in the absence of use, the inner wall 61 of the sliding sleeve 6 is in rolling friction with the frontal section 51 due to the plurality of balls 53, in order to achieve the effect of frictionless sliding. However, the present disclosure is not limited to the multiple balls 53 being mounted on the surface of the underside of the fixed base 52, as long as the resistance can be reduced when the sliding sleeve 6 slides linearly relative to the frontal section 51, thus enabling frictionless sliding. In other embodiments, however, the multiple receiving grooves 521 can be arranged in a straight line along the surfaces of the upper and lower sides of the fixed base 52, and the balls 53 (not shown in the figure) are each mounted in the receiving grooves 521, so that the sliding sleeve 6 slides more smoothly linearly relative to the frontal section 51.

[0033] In the embodiment of the third set of adjustment mechanisms, as described in the Fig. 10 and Fig. As shown in Figure 12, the positioning element comprises a snap fastener 62 and a pair of tension springs 63. The snap fastener 62 is arranged on the support foot 3 and is supported by a compression spring 621, so that the snap fastener 62 is normally tilted (as shown in Figure 12). Fig. (Figure 13). One of the tension springs 63 is arranged on one side of one of the sliding sleeves 6, and the other tension spring 63 is arranged on one side of the other sliding sleeve 6. One end of each of the tension springs 63 is attached to the underside of the base 2, and the other end of each of the tension springs 63 is attached to the sliding sleeve 6. When the support foot 3 is extended, while the sliding sleeves 6 slide linearly with respect to their respective frontal sections 51 until the catch 62 is tilted, the catch 62 forms a block against the side of the base 2 for positioning. In this case, the tension spring 63 is in a tensioned state. When the catch 62 is pressed to release the block of the base 2, the support foot 3 is retracted toward the base 2 under the restoring force of the tension spring 63.

[0034] The infant and toddler carrier according to the present disclosure improves the adjustment mechanisms; that is, each set of adjustment mechanisms is provided with the guide sliding element between the rail element and the sliding element, so that the frictional resistance during linear sliding of the sliding element relative to the rail element is effectively reduced. Compared to the adjustment mechanism of the conventional infant and toddler carrier, the infant and toddler carrier according to the present disclosure avoids the sliding jamming caused by the sliding contact between the surfaces of the sliding mechanisms, thereby preventing uneven expansion and contraction to achieve the effect of frictionless sliding of the sliding element on the rail element.

[0035] Although the safety seat 1 is taken as a specific example in the above sections of this disclosure, and the embodiments of the first, second, and third sets of adjustment mechanisms are described in detail, this disclosure is not limited to the adjustment mechanisms of the safety seat 1. This disclosure can also be applied to the adjustment mechanism of other infant and toddler carriers than those described above. As in Fig. As shown in Figure 14, for example, a retractable armrest of a stroller 7 comprises an outer tube 71 and an inner tube 72. The outer tube 71 is used as a rail element and the inner tube 72 as a sliding element. Another example is shown in Fig. Figure 15 shows a retractable foot frame for a child's bed 8 with an outer tube 81 and an inner tube 82. The outer tube 81 is used as a rail element and the inner tube 82 as a sliding element. Another example is the one shown in Fig. Figure 16 shows a retractable foot frame of a child's chair 9 with an outer tube 91 and an inner tube 92. The outer tube 91 is used as a rail element and the inner tube 92 as a sliding element. Similar to the arrangements of the first set of adjustment mechanisms mentioned above, in which the fixed base 33 and the plurality of balls 34 are provided between the outer tube 31 and the inner tube 32, other carriers for infants and toddlers, such as those shown in the Fig. 14, Fig. 15 to Fig.In the 16 examples shown, the guide sliding elements can also be arranged between the rail elements and the sliding elements in order to achieve the effect of frictionless sliding, so that these various carriers for infants and toddlers fall within the scope of the present disclosure.

Claims

[1] Infant and toddler carrier with an improved adjustment mechanism, comprising: a support body; a rail element that is arranged on the support body; a sliding element that is connected to the rail element and is able to slide linearly with respect to the rail element; a guide sliding element arranged on the sliding element, wherein the rail element is in rolling contact with the guide sliding element during linear sliding of the sliding element relative to the rail element; and a positioning element arranged between the rail element and the sliding element and configured to fix a position of the sliding element after linear sliding of the sliding element relative to the rail element, wherein a support foot (3) is arranged on a front face of the support body, the rail element is arranged on the support foot (3), the sliding element is arranged at least partially in the rail element, the rail element has an end piece (311) located away from the support body, a through hole (312) extending from the end piece (311) is arranged in the rail element, the sliding element has a connecting end (321) and a stop end (322) at two different ends, the connecting end (321) is provided with the guide sliding element which is inserted from the end piece (311) into the through hole (312) to be connected to the rail element;and the stop end (322) is exposed from the rail element, wherein the guide sliding element comprises a fixed base (33) and a plurality of balls (34), the fixed base (33) is fixedly arranged on the connecting end (321), the fixed base (33) comprises a plurality of receiving grooves (331) arranged along a circumference of the fixed base (33), the plurality of balls (34) are mounted in the plurality of receiving grooves (331) along the circumference of the fixed base (33), and the connecting end (321) is in rolling contact with an inner wall of the rail element by means of the plurality of balls (34). [2] Infant and toddler carrier with an improved adjustment mechanism according to claim 1, wherein the fixed base (33) is formed in one piece and comprises a coupling section (332) and a ring section (333), wherein the ring section (333) is arranged at one end of the coupling section (332) and projects laterally, wherein the multiple receiving grooves (331) are arranged along a circumference of the ring section (333); and wherein each of the receiving grooves (331) comprises an oil storage chamber (331a) and the oil storage chamber (331a) is configured to store lubricating oil which provides auxiliary lubrication when the mounted balls (34) are in rolling contact with the inner wall (313). [3] Carrier for infants and toddlers with an improved adjustment mechanism according to claim 2, wherein the coupling section (332) is firmly connected to the connecting end (321) by a shaft element (35) extending through the coupling section (332) and the connecting end (321). [4] Carrier for infants and toddlers with an improved adjustment mechanism according to claim 3, wherein the end piece (311) is provided with an end sleeve (36) which is inserted into the through hole (312) to block the connecting end (321) in the through hole (312) and the connecting end (321) in the through hole (312) is prevented from coming out of the rail element from the end piece (311). [5] Infant and toddler carrier with an improved adjustment mechanism according to claim 1, wherein the positioning element comprises a tube base (37) and a fastening element (38), wherein the tube base (37) is attached to the end piece (311), the fastening element (38) is movably arranged on the tube base (37), the sliding element comprises a plurality of fastening holes (323) arranged at intervals along a longitudinal direction of the sliding element, wherein the fastening element (38) is attached to the fastening hole (323) at a corresponding position when an extension length of the sliding element is set with respect to the rail element and the sliding element slides linearly to a selected position. [6] Infant and toddler carrier with an improved adjustment mechanism according to claim 5, wherein the fastening element (38) is pivotably connected to the tube base (37) by a shaft element (39) extending through the fastening element (38) and the tube base (37), wherein the fastening element (38) comprises an engagement section (381) and a rocker arm section (382), wherein the engagement section (381) is configured to correspond to and engage with each of the fastening holes (323), the rocker arm section (382) is arranged at a different location than the engagement section (381), an elastic return element (30) is slid onto the shaft element (39), one end of the elastic return element (30) rests against the tube base (37) and another end of the elastic return element (30) rests against the rocker arm section (382),the elastic return element (30) is compressed to generate an elastic return force when the rocker arm section (382) is actuated; and when the rocker arm section (382) is released, the rocker arm section (382) is pushed back by the elastic return force so that the engagement section (381) is reset to engage with the mounting hole (323) at the appropriate position. [7] Infant and toddler carrier with an improved adjustment mechanism, comprising: a support body; a rail element that is arranged on the support body; a sliding element that is connected to the rail element and is able to slide linearly with respect to the rail element; a guide sliding element arranged on the rail element, wherein the sliding element is in rolling contact with the guide sliding element during linear sliding with respect to the rail element; and a positioning element arranged between the rail element and the sliding element and configured to fix a position of the sliding element after linear sliding of the sliding element relative to the rail element, wherein the support body comprises a support frame (5), each of the two sides of the support frame (5) is provided with a rail element and a sliding element that can slide relative to the support frame (5), the two sliding elements each being provided with a connecting arm (4) having an ISOFIX connector at one end on the same side, and each of the sliding elements being inserted into the corresponding rail element and being able to slide linearly, wherein each of the rail elements is provided with a guide sliding element, each guide sliding element comprises a fixed base (43) and a plurality of balls (44), the fixed base (43) is fixedly arranged in the rail element, the fixed base (43) comprises a plurality of receiving grooves (431) which are uniformly distributed on a side surface of the fixed base (43), the plurality of balls (44) are each arranged in the receiving grooves (431), and each of the rail elements is in rolling contact with an outer wall (421) of the sliding element inserted through the rail element via the plurality of balls (44). [8] Carrier for infants and toddlers with an improved adjustment mechanism according to claim 7, wherein the two sliding elements each have a plurality of limiting holes (422) arranged at intervals along a longitudinal direction of the respective sliding element, wherein the positioning element is a stop pin (45) corresponding to each of the sliding elements, wherein the stop pin (45) is inserted into the limiting hole (422) at a corresponding position for stopping and positioning when each of the sliding elements slides linearly into a selected position with respect to the rail element through which the sliding element is inserted. [9] Infant and toddler carrier with an improved adjustment mechanism, comprising: a support body; a rail element that is arranged on the support body; a sliding element that is connected to the rail element and is able to slide linearly with respect to the rail element; a guide sliding element arranged on the rail element, wherein the sliding element is in rolling contact with the guide sliding element during linear sliding with respect to the rail element; and a positioning element arranged between the rail element and the sliding element and configured to fix a position of the sliding element after linear sliding of the sliding element relative to the rail element, wherein the support body is provided on a bottom side with a support frame (5), the support frame (5) comprising a pair of rail elements, a support foot (3) is arranged on a front side of the support body, the support foot (3) comprising a pair of sliding elements, and the pair of sliding elements is slid onto the pair of rail elements and can slide linearly, wherein each of the rail elements is provided with a guide sliding element, each guide sliding element comprises a fixed base (52) and a plurality of balls (53), the fixed base (52) is elongated and is attached to a frontal section of the support frame (5), the fixed base (52) has a plurality of receiving grooves (521) arranged in a straight line along a side surface of the fixed base (52), the plurality of balls (53) are each mounted in the receiving grooves (521), and each of the rail elements is in rolling contact with an inner wall (61) of the sliding element into which the rail element is inserted via the plurality of balls (53).

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