First locking mechanism of child carrier base

Abstract

The utility model discloses a first locking mechanism of a child carrier base, the base comprises a carrier body framework, a sliding plate, a rotating disc and a disc frame which are arranged from top to bottom, the first locking mechanism is used for locking the rotating disc on the disc frame, and the first locking mechanism comprises two handles, a transmission mechanism and a rotating disc lock, the rotary disc lock is vertically arranged, a disc frame lock groove matched with the rotary disc lock is formed in the disc frame, the transmission mechanism is connected with the handle and the rotary disc lock, and the handle controls a lock head of the rotary disc lock to move up and down through the transmission mechanism so as to be locked with or separated from the disc frame lock groove. The first locking mechanism is safe and reliable.

Description

Technical Field

[0001] The utility model relates to a children's carrying appliance, in particular to a first-stage locking mechanism of a children's carrier base. Background Art

[0002] Children's carriers are commonly used children's carrying appliances, generally including a carrier base and a carrier body. The carrier base is used to install the carrier body, and the carrier body is used to carry infants and young children. At present, the carrier body of the children's carrier can rotate relative to the carrier base to achieve forward (facing the vehicle driving direction F) or backward (backward of the vehicle driving direction F) installation of the carrier body. As a locking member of the carrier base, safety must be ensured. Content of the Utility Model

[0003] The purpose of the utility model is to provide a first-stage locking mechanism of a children's carrier base, and the first-stage locking mechanism is safe and reliable.

[0004] The above object of the utility model is achieved by the following technical solutions: a first-stage locking mechanism of a children's carrier base, the base includes a carrier body skeleton, a sliding plate, a rotating disk and a disk frame arranged from top to bottom, and the first-stage locking mechanism is used to lock the rotating disk on the disk frame. It is characterized in that: the first-stage locking mechanism includes two handles, a transmission mechanism and a rotary disk lock. The rotary disk lock is arranged vertically. A disk frame lock groove adapted to the rotary disk lock is opened on the disk frame. The transmission mechanism is respectively connected with the handle and the rotary disk lock. The handle controls the up and down movement of the lock head of the rotary disk lock through the transmission mechanism to realize the locking or separation from the disk frame lock groove.

[0005] This first-stage locking mechanism is used to lock the rotating disk on the disk frame. When unlocking, the first-stage locking mechanism needs to be unlocked first before other operations can be carried out.

[0006] In the utility model, there is one rotary disk lock and two disk frame lock grooves. The two disk frame lock grooves are evenly arranged on the same circumference. The rotary disk lock corresponds to one of the disk frame lock grooves respectively after the rotating disk rotates 180°.

[0007] The transmission mechanism includes a first rotating cam, a transmission cam, a connecting rod, a second rotating cam, a lock joint and a lock seat. The first rotating cam, the transmission cam and the second rotating cam are all installed on the rotating disk through a hinge shaft. There are two handles, and the two handles are respectively connected with the first rotating cam and the second rotating cam. One of the first rotating cam and the second rotating cam is directly hinged to one end of the connecting rod, and the other is hinged to the other end of the connecting rod through the transmission cam; so that when the first rotating cam and the second rotating cam rotate in opposite directions respectively, they can both pull the connecting rod to move in the same direction.

[0008] The connecting rod is connected to the locking joint. The locking joint is provided with an inclined groove. When the connecting rod moves, it drives the locking joint, and the rotatable turntable lock is driven to move up or down by the inclined groove, so as to realize the locking or separation between the turntable lock and the disc frame locking groove. The connecting rod is also connected with a return spring; the locking seat is arranged on the rotating disc, the locking seat is provided with a vertical groove, the turntable lock has a locking pin, the locking pin passes through the inclined groove and the vertical groove, and the middle part of the locking pin is fixedly inserted through the turntable lock, and drives the locking pin to move up and down through the combined action of the inclined groove and the vertical groove. When the locking pin moves up and down, it drives the turntable lock to move up and down synchronously. Brief Description of the Drawings

[0009] The following further describes the present invention in detail with reference to the drawings and specific embodiments.

[0010] Figure 1 It is an exploded view of the children's carrier base of the present invention;

[0011] Figure 2 It is a semi-exploded and semi-assembled exploded view of the children's carrier base of the present invention;

[0012] Figure 3 It is an assembly drawing of the rotating disc installed on the disc frame in the children's carrier base of the present invention. At this time, the rotating disc is in the forward / backward locking position. At this time, the wedge lock 7 is separated from the blocking lock groove 61 of the disc frame 6, the sliding plate and the rotating disc are locked by the wedge lock 7, and the rotating disc and the disc frame are locked by the first-stage locking mechanism;

[0013] Figure 3A It is Figure 3 Enlarged view of part C;

[0014] Figure 4 It is a partial exploded structural view of the first-stage locking mechanism of the children's carrier base of the present invention, showing the structures of the locking joint, the locking seat and the turntable lock;

[0015] Figure 5 It is Figure 3 Top view;

[0016] Figure 5A It is Figure 5 Sectional view taken along line F-F;

[0017] Figure 5B It is Figure 5 Sectional view taken along line G-G;

[0018] Figure 5C It is Figure 5 Enlarged view of part A;

[0019] Figure 5D It is Figure 5 Enlarged view of part B;

[0020] Figure 5E It isFigure 5A Partial enlarged view of;

[0021] Figure 5F is Figure 5B Partial enlarged view of;

[0022] Figure 6 Assembly drawing of the rotating disk installed on the disk frame in the child carrier base of the present utility model. At this time, the rotating disk is located at the laterally locked position after rotation. At this time, the wedge lock 7 is engaged with the blocking lock groove 61 of the disk frame 6, unlocking the locking of the sliding plate and the rotating disk, and the rotating disk and the disk frame are locked by the wedge lock 7;

[0023] Figure 6A is Figure 6 Partial enlarged view of;

[0024] Figure 7 is Figure 6 Top view of;

[0025] Figure 7A is Figure 7 C-C sectional view of;

[0026] Figure 7B is Figure 7A Partial enlarged view of;

[0027] Figure 7C is Figure 7 D-D sectional view of;

[0028] Figure 7D is Figure 7C Partial enlarged view of;

[0029] Figure 8 Assembly drawing of the sliding plate in the child carrier base of the present utility model. At this time, the wedge lock 7 is located at a position separated from the blocking lock groove 61 of the disk frame 6, the sliding plate is locked with the slide rail plate, and the sliding plate has not yet slid;

[0030] Figure 9 is Figure 8 Top view of;

[0031] Figure 9A is Figure 9 E-E sectional view of;

[0032] Figure 9B is Figure 9A Partial enlarged view of;

[0033] Figure 10 Assembly drawing of the sliding plate in the child carrier base of the present utility model. At this time, the wedge lock 7 is located at a position engaged with the blocking lock groove 61 of the disk frame 6. After unlocking the movement of the sliding plate and the slide rail plate, the sliding plate has already slid;

[0034] Figure 11 isFigure 10 Schematic diagram of the partial decomposition structure, showing the first structure of the skateboard lock;

[0035] Figure 12 is Figure 10 Top view of;

[0036] Figure 12A is Figure 12 H-H sectional view of;

[0037] Figure 12B is Figure 12A Partial enlarged view of;

[0038] Figure 12C is Figure 12 I-I sectional view of;

[0039] Figure 12D is Figure 12C Partial enlarged view of;

[0040] Figure 12E is Figure 12 J-J sectional view of;

[0041] Figure 12F is Figure 12E Partial enlarged view of;

[0042] Figure 13 The second structure of the skateboard lock;

[0043] Figure 14 Another sectional view of the sliding plate, on which the second structure of the skateboard lock is installed;

[0044] Figure 14A is Figure 14 Partial enlarged view of;

[0045] Figure 15 Exploded view of the carrier body frame in the child carrier base of the present utility model;

[0046] Figure 15A is Figure 15 Partial enlarged view of;

[0047] Figure 15B is Figure 15 Partial enlarged view of;

[0048] Figure 16 Assembly drawing of the carrier body frame in the child carrier base of the present utility model, wherein the inner end frame bone is omitted, and the head hook wheel and the tail hook wheel are locked with the connecting rod members of the carrier body;

[0049] Figure 16A is Figure 16 Partial enlarged view of;

[0050] Figure 16B is Figure 16 a partially enlarged view of;

[0051] Figure 16C is Figure 16 a partially enlarged view of;

[0052] Figure 17 is an assembly drawing of the carrier body skeleton in the child carrier base of the present utility model. Among them, the inner end frame bone at the tail end is omitted, and the head end hook wheel and the tail end hook wheel are separated from the connecting rod member of the carrier body;

[0053] Figure 17A is Figure 17 a partially enlarged view of;

[0054] Figure 17B is Figure 17 a partially enlarged view of;

[0055] Figure 17C is Figure 17 a partially enlarged view of;

[0056] Figure 18 is a reference view of the usage state of the child carrier base of the present utility model. At this time, the carrier body skeleton and the sliding plate are both in the forward position facing the driving direction F;

[0057] Figure 19 is a reference view of the usage state of the child carrier base of the present utility model. At this time, the carrier body skeleton and the sliding plate are both in the side shift position facing the side shift direction S;

[0058] Figure 20 is a reference view of the usage state of the child carrier base of the present utility model. At this time, the carrier body skeleton and the sliding plate move along the side shift direction S. Detailed implementation manner

[0059] Such as Figures 1 to 20 the child carrier base shown, which includes a carrier body skeleton 1, a sliding plate 3, a slide rail plate 4, a rotating disk 5, and a disk frame 6 arranged from top to bottom. The disk frame 6 is fixedly installed on the carrier base 9, the rotating disk 5 is installed on the disk frame 6, the rotating disk 5 can rotate after being unlocked, the slide rail plate 4 is fixedly installed on the rotating disk 5, the sliding plate 3 is supported on the slide rail plate 4, the sliding plate 3 can move along the slide rail plate 4 after being unlocked, and a housing 2 is further provided around the sliding plate 3. The housing 2 has a side housing 21 and a front housing 22. The carrier body skeleton 1 is fixedly installed on the sliding plate 3, and the carrier body skeleton 1 is used to support the carrier body.

[0060] The base is also provided with a rotation locking unit, such as Figures 1 to 14AAs shown, the rotating lock unit includes a vertical wedge lock 7, and there can also be multiple wedge locks 7. The rotating disk 5 has a rotating disk body 50. A rotating disk wedge lock insertion hole 51 is provided on the rotating disk 5. The slide rail plate 4 has a slide rail plate body 40. A slide rail plate wedge lock insertion hole 41 is provided on the slide rail plate 4. The wedge lock 7 penetrates the insertion holes of the rotating disk 5 and the slide rail plate 4 from bottom to top. The sliding plate 3 has a sliding plate body 30. A lock hole 31 adapted to the top end of the wedge lock 7 is provided on the sliding plate 3. The disk frame 6 has a disk frame body 60. At least one blocking lock groove 61 adapted to the bottom end of the wedge lock 7 is provided on the upper surface of the disk frame 6. The wedge lock 7 has different states of engaging or separating with the lock hole 31 or the blocking lock groove 61, and the locking or unlocking of the sliding plate 3 or the rotating disk 5 is controlled by the wedge lock 7; when the bottom end of the wedge lock 7 separates from the blocking lock groove 61, the bottom end of the wedge lock 7 presses against the upper surface of the disk frame 6 (see Figure 5A 、 5B 、5F), the top end of the wedge lock 7 extends upward into the lock hole 31 (see Figure 8 、 9 、9A、9B), locking the sliding plate 3 on the slide rail plate 4. At this time, when the rotating disk 5 rotates, it can drive the slide rail plate 4 and the sliding plate 3 to rotate synchronously; when the wedge lock 7 rotates with the rotating disk 5 to a position corresponding to the blocking lock groove 61 at the bottom end of the wedge lock, the bottom end of the wedge lock 7 enters the blocking lock groove 61 downward (see 7A, 7C, 7D), locking the rotating disk 5, and at the same time the top end of the wedge lock 7 disengages from the lock hole 31 (see Figure 10 、 12 、12A、12B), unlocking the sliding plate 3. At this time, the sliding plate 3 drives the carrier body frame 1 to slide laterally to the side of the carrier under the action of an external force, so as to facilitate taking the infant out of the carrier; rotating the rotating disk 5, when the rotating disk 5 rotates, it drives the wedge lock 7 to overcome the resistance between the bottom end of the wedge lock and the blocking lock groove 61, and pushes the bottom end of the wedge lock 7 out of the blocking lock groove 61, unlocking the rotating disk 5. A side shift notch 91 for the lateral movement of the sliding plate 3 is provided on the side of the carrier base 9.

[0061] In this embodiment, the wedge lock 7 is both a locking member of the rotating disk 5 and a locking member of the sliding plate 3, and has multiple functions. When the wedge lock 7 locks the rotating disk 5, the sliding plate 3 is unlocked. At this time, the rotating disk 5 is locked on the disk frame 6, making the lateral movement of the sliding plate 3 smoother; when the wedge lock 7 locks the sliding plate 3, the rotating disk 5 is unlocked from the disk frame 6, so that the rotating disk 5 can drive the sliding plate 3 to rotate to the forward position or the backward position.

[0062] In this embodiment, there are two wedge locks 7, and the two wedge locks 7 are evenly arranged on the same circumference; there are also two blocking lock grooves 61 formed on the disc frame 6, and the two blocking lock grooves 61 are evenly arranged on the same circumference; after the rotating disc 5 rotates 90° or 270°, the bottom end of the wedge lock 7 enters the blocking lock groove 61, and at this time, the carrier is converted from the infant riding state to the infant holding and placing state, and the carrier body frame 1 and the sliding plate 3 can slide along the side shift direction S that is substantially perpendicular to the vehicle traveling direction F.

[0063] In this embodiment, the bottom end of the wedge lock 7 is trapezoidal with a wider top and a narrower bottom, and the inclined surface 72 of the bottom end of the wedge lock 7 of the wedge lock 7 is obliquely arranged. Correspondingly, the blocking lock groove 61 is also trapezoidal with a wider top and a narrower bottom, and the blocking lock groove inclined surface 611 of the blocking lock groove 61 is also obliquely arranged. The bottom end of the wedge lock 7 can also be arc-shaped or frustum-shaped, and correspondingly, the blocking lock groove 61 is also arc-shaped or frustum-shaped.

[0064] In this embodiment, the wedge lock 7 further has a push and reset spring 71. The push and reset spring 71 is located between the slide rail plate 4 and the rotating disc 5. The lower end of the push and reset spring 71 is connected to the wedge lock 7, and the upper end is connected to the bottom surface of the slide rail plate 4. The push and reset spring 71 always exerts a downward pressure on the wedge lock 7. When the wedge lock 7 rotates with the rotating disc 5 to a position where the bottom end of the wedge lock 7 corresponds to the blocking lock groove 61, the wedge lock 7 automatically moves downward into the blocking lock groove 61.

[0065] In this embodiment, the sliding plate 3 and the slide rail plate 4 are connected by a slide rail pair. The slide rail pair includes a straight pipe rail 45 arranged at the edge of the slide rail plate 4 and a sleeve 32 arranged at the edge of the sliding plate 3. The sleeve 32 is sleeved on the straight pipe rail 45, and the sliding plate 3 can move along the length direction of the straight pipe rail 45 under the action of an external force.

[0066] A slide plate locking unit is further arranged between the sliding plate 3 and the slide rail plate 4, as Figure 1 , Figure 2 , Figures 10 to 14A shown. The slide plate locking unit includes at least one slide plate locking assembly 33 arranged on the sliding plate 3 and at least one slide rail lock groove 42 arranged on the upper surface of the slide rail plate 4. The slide plate locking assembly 33 includes a vertically arranged slide plate lock 333. The bottom end of the slide plate lock 333 is adapted to the slide rail lock groove 42. When the bottom end of the slide plate lock 333 enters the slide rail lock groove 42, the sliding plate 3 is locked; when the sliding plate 3 is pushed, the slide plate lock 333 overcomes the resistance between the bottom end of the slide plate lock 333 and the slide rail lock groove 42 under the action of an external force, and the bottom end of the slide plate lock 333 is pushed out of the slide rail lock groove 42 to unlock the sliding plate 3.

[0067] The bottom end of the skateboard lock 333 is trapezoidal with a wider upper part and a narrower lower part. The inclined surface 3331 at the bottom end of the skateboard lock 333 is obliquely arranged. Correspondingly, the slide rail lock groove 42 is also trapezoidal with a wider upper part and a narrower lower part, and the inclined surface 421 of the slide rail lock groove 42, i.e., 421, is obliquely arranged.

[0068] The bottom end of the skateboard lock 333 can also adopt other shapes, such as Figure 13 , Figure 14 and Figure 14A As shown, another inclined surface 3331 at the bottom end of the skateboard lock / adopts an arc shape. Correspondingly, another slide rail lock groove 42 / also adopts an arc shape. Both can also adopt a frustum shape.

[0069] In this embodiment, the skateboard latch assembly 33 further includes a lock base 331 and a return spring 332. The lock base 331 is fixedly installed on the sliding plate 3. The lock base 331 has a seat cavity. The return spring 332 is located in the seat cavity. The bottom end of the return spring 332 is connected to the skateboard lock 333, and the top end is connected to the top surface of the seat cavity.

[0070] The skateboard lock 333 also has a stroke control bump 3332. A stroke control groove 3311 is formed on the side surface of the lock base 331. The stroke control bump 3332 is located in the stroke control groove 3311 to control the distance of the up-and-down movement of the skateboard lock 333.

[0071] There are multiple slide rail lock grooves 42. Among them, the slide rail lock groove at the end is the end slide rail lock groove 43. The inclination angle of the end slide rail lock groove 43 is greater than that of the other slide rail lock grooves 42, thereby generating a greater frictional resistance with the skateboard lock 333. When the bottom end of the skateboard lock 333 enters the end slide rail lock groove 43, the sliding plate 3 reaches the maximum movement stroke.

[0072] Multiple rollers 44 are also provided on the upper surface of the slide rail plate 4 and / or the lower surface of the sliding plate 3. Preferably, the multiple rollers 44 are arranged in at least one row along the movement direction of the sliding plate 3.

[0073] In practice, after the vehicle stops, the locking of the rotating disc 5 and the disc frame 6 in the side shift direction S is only to make the sliding plate 3 move more smoothly during side shift. Therefore, the locking of the rotating disc 5 and the disc frame 6 only needs to meet general requirements; while during the vehicle driving process, the rotating disc 5 must be in the forward position or the backward position. At this time, the locking of the rotating disc 5 and the disc frame 6 in the forward position or the backward position must be firm to prevent accidents and ensure the protection of infants and young children.

[0074] Therefore, the rotating disc 5 also has a primary locking mechanism for locking the rotating disc 5 and the disc frame 6 in the forward position or the backward position at this time. Such as Figures 1 to 7DAs shown in the figure, the first locking mechanism includes two handles 8, a transmission mechanism, and a turntable lock 52. The turntable lock 52 is vertically arranged, and a lock groove 62 adapted to the turntable lock 52 is provided on the disk frame 6. The transmission mechanism is respectively connected to the handle 8 and the turntable lock 52. The handle 8 controls the up and down movement of the lock head of the turntable lock 52 through the transmission mechanism to realize the locking or separation between the turntable lock 52 and the lock groove 62 of the disk frame.

[0075] There is one turntable lock 52 and two lock grooves 62 of the disk frame. The two lock grooves 62 of the disk frame are evenly arranged on the same circumference. After the rotating disk 5 rotates 180°, the turntable lock 52 corresponds to one of the lock grooves 62 of the disk frame respectively.

[0076] The transmission mechanism includes a first rotating cam 53, a transmission cam 54, a connecting rod 55, a second rotating cam 56, a lock joint 57, and a lock seat 59. The first rotating cam 53, the transmission cam 54, and the second rotating cam 56 are all installed on the rotating disk 5 through hinge shafts. There are two handles 8, and the two handles 8 are respectively connected to the first rotating cam 53 and the second rotating cam 56 (see Figure 5 , 5C , 5D). One of the first rotating cam 53 and the second rotating cam 56 is directly hinged to one end of the connecting rod 55, and the other is hinged to the other end of the connecting rod 55 through the transmission cam 54; so that when the first rotating cam 53 and the second rotating cam 56 rotate in opposite directions respectively, they can both drive the connecting rod 55 to move in the same direction.

[0077] In this embodiment, by rotating the first rotating cam 53 counterclockwise (R1) through one of the handles 8, the transmission cam 54 can be driven to rotate clockwise (R2), thereby driving the connecting rod 55 to move in the D1 direction. And by rotating the second transmission cam 56 clockwise (R3) through the other handle 8, the connecting rod 55 can also be driven to move in the D1 direction. The connecting rod 55 is preferably formed by fixedly connecting two rods. So that during manufacturing and assembly, the two rods respectively pass through the openings provided on the rotating disk 5, so that the connecting rod 55 is guided by the openings of the rotating disk 5 during movement and is more stable.

[0078] The connecting rod 55 is connected to a lock joint 57, and the lock joint 57 is provided with an inclined groove 571; when the connecting rod 55 moves, it drives the lock joint 57, and a turntable lock 52 that can only move up and down is driven by the inclined groove 571 to move up or down (see Figure 4 ), thereby realizing the locking or separation between the turntable lock 52 and the lock groove 62 of the disk frame. The connecting rod 55 is also connected with a return spring.

[0079] In this embodiment, the rotating disk 5 is provided with a fixed lock seat 59, and the fixed lock seat 59 is provided with a vertical groove 591. The turntable lock 52 has a lock pin 58. The lock pin 58 passes through the inclined groove 571 and the vertical groove 591. The middle part of the lock pin 58 is fixedly inserted through the turntable lock 52. The common action of the inclined groove 571 and the vertical groove 591 drives the lock pin 58 to move up and down. When the lock pin 58 moves up and down, it drives the turntable lock 52 to move up and down synchronously.

[0080] As Figure 3 , 3A , 5A and 5E show, the rotating disk 5 is in the locked position, and the turntable lock 52 is located in the disk frame lock groove 62. When the rotating disk 5 needs to be unlocked, just rotate one of the handles 8, and of course, two handles 8 can also be rotated in opposite directions at the same time. After the rotating disk 5 is unlocked, as Figure 6 , 6A , 7A, 7B show.

[0081] When the rotating disk 5 needs to be locked, just loosen the handle 8. Under the action of the return spring, the connecting rod 55 moves reversely, driving the lock joint 57 to move reversely as well. When moving, the common action of the inclined groove 571 and the vertical groove 591 drives the lock pin 58 and the turntable lock 52 to move downward, and the turntable lock 52 enters the disk frame lock groove 62 to lock the rotating disk 5 (see Figure 3A , 5A , 5E).

[0082] In this embodiment, the wedge lock 7 is also the secondary locking mechanism of the rotating disk 5. When rotating, the primary locking mechanism needs to be unlocked first.

[0083] As Figure 18 shows, the rotating disk 5 is locked on the disk frame 6 through the primary locking mechanism. At this time, the bottom end of the wedge lock 7 is separated from the blocking lock groove 61, the bottom end of the wedge lock 7 presses against the upper surface of the disk frame 6, and the top end of the wedge lock 7 extends upward into the lock hole 31 to lock the sliding plate 3 on the slide rail plate 4. The vehicle body moves along the traveling direction F, and the infant is in the normal loading state.

[0084] When the infant needs to be taken out of the vehicle, first unlock the primary locking mechanism, and then rotate the rotating disk 5. When the rotating disk 5 rotates, it can drive the slide rail plate 4 and the sliding plate 3 to rotate synchronously; after the rotating disk 5 rotates 90° or 270°, the vehicle body rotates from the traveling direction F to the side shift direction S, as Figure 19 shows. At this time, the bottom end of the wedge lock 7 moves downward into the blocking lock groove 61 to lock the rotating disk 5. At the same time, the top end of the wedge lock 7 disengages from the lock hole 31 to unlock the sliding plate 3.

[0085] Push the sliding plate 3 to drive the vehicle body frame 1 to slide towards the side of the vehicle. After sliding, as Figure 20As shown, at this time, the infant is converted from the normal carrying state to the holding and placing state. Since the vehicle body is already in the side shift direction S, it is convenient to take the infant out of the vehicle.

[0086] When reset is needed, first push the sliding plate 3 back to its original position, and then rotate the rotating disk 5. When the rotating disk 5 rotates, it drives the wedge lock 7 to overcome the resistance between the bottom end of the wedge lock and the blocking lock groove 71, and pushes the bottom end of the wedge lock 7 out of the blocking lock groove 71 to unlock the rotating disk 5. At the same time, the top end of the wedge lock 7 extends upward into the lock hole 31 to lock the sliding plate 3 on the slide rail plate 4. At this time, continue to rotate the rotating disk 5 and return it to the initial position. In the initial position, the infant is in the normal carrying state, and the rotating disk 5 is locked by the first locking mechanism. After rotation, the vehicle body returns from the side shift direction S to the driving direction F.

[0087] In this embodiment, the vehicle body frame 1 is detachably connected to the vehicle body (not shown). The vehicle body frame 1 is provided with a supporting mechanism to support the vehicle body through the supporting mechanism.

[0088] As Figure 1 、 Figure 2 、 Figures 15 to 17C shown, the vehicle body frame 1 has a head end frame bone 17 and a tail end frame bone 18. The supporting mechanism includes an operating member 12, a first moving member 11, a second moving member 13, a head end hook wheel 15 and a tail end hook wheel 16 arranged in reverse. The head end hook wheel 15 is installed on the head end frame bone 17 through a first hinge shaft 154, and the tail end hook wheel 16 is installed on the tail end frame bone 18 through a second hinge shaft 164. The operating member 12 and the first moving member 11 are both supported on the sliding plate 3. The first moving member 11 is also provided with a return spring (not shown). The positions of the head end hook wheel 15 and the tail end hook wheel 16 are controlled by the vehicle body, the first moving member 11 and the second moving member 13, so that the head end hook wheel 15 and the tail end hook wheel 16 are in a locked state or a separated state with the connecting rod member of the vehicle body, thereby locking or unlocking the vehicle body.

[0089] In this embodiment, the first moving member 11 is provided with a first cross bar 112, and the second moving member 13 is provided with a second cross bar 131. The middle of a steering link 14 is hinged on the sliding plate 3. One end of the steering link 14 is hinged on the body of the first moving member 11, and the other end is hinged to the second moving member 13. For the first moving member 11 and the operating member 12, see Figure 15 , when the first moving member 11 moves (D2), it drives the steering link 14 to rotate (R4, R5), and through the steering link 14, the moving direction (D3) of the second moving member 13 is opposite to the moving direction of the first moving member 11.

[0090] The head-end hook wheel 15 is provided with a first-position hook groove 151, a second-position hook groove 152, and a head-end lock rod hook groove 153. The head end of the first moving member 11 is located within the head-end frame bone 17, and the first cross bar 112 moves along with the first moving member 11 and is respectively adapted to the positions of the first-position hook groove 151 and the second-position hook groove 152. When the first cross bar 112 is located within the first-position hook groove 151, the head-end lock rod hook groove 153 is separated from the connecting rod member at the head end of the vehicle body (see Figure 17 , 17C ). When the head-end hook wheel 15 rotates under the action of an external force, when the position of the first cross bar 112 slides from the first-position hook groove 151 to the second-position hook groove 152 under the action of the first return spring, the head-end lock rod hook groove 153 is locked with the connecting rod member at the head end of the vehicle body (see Figure 16 , 16C ).

[0091] The tail-end hook wheel 16 is provided with a third-position hook groove 161, a fourth-position hook groove 162, and a tail-end lock rod hook groove 163. The second cross bar 131 moves along with the second moving member 12 and is respectively adapted to the positions of the third-position hook groove 161 and the fourth-position hook groove 162. When the second cross bar 131 is located within the third-position hook groove 161, the tail-end lock rod hook groove 163 is separated from the connecting rod member at the tail end of the vehicle body (see Figure 17 , 17C ). When the tail-end hook wheel 16 rotates under the action of an external force, when the position of the second cross bar 131 slides from the third-position hook groove 161 to the fourth-position hook groove 162 under the indirect action of the second return spring, the tail-end lock rod hook groove 163 is locked with the connecting rod member at the tail end of the vehicle body (see Figure 16 , 16C ).

[0092] The vehicle body frame 1 is externally wrapped with a housing (not shown). For the convenience of operation, the tail end 113 of the first moving member 11 is exposed outside the housing, so that a person can operate the first moving member 11. The head end of the second moving member 11 is hinged to the operating member 12, and the operating member 12 is also exposed outside the housing. When the vehicle body frame 1 rotates to the forward position, the backward position, or the side-shift position along with the rotating disk 3, the operator can choose to operate the tail end 113 of the first moving member 11 or the second operating member 12 that is convenient to push the first moving member 11.

[0093] The base also has an installation prompt member 23. An opening is provided on the housing corresponding to the position of the installation prompt member 23. The lower end of the installation prompt member 23 is hinged to the sliding plate 3. A vertical support rod 111 is fixedly provided at the tail end of the first moving member 11. When the support rod 111 moves with the first moving member 11, it supports different positions of the arc bottom of the installation prompt member 23, causing the installation prompt member 23 to rotate around its hinge point (R8), and different parts are exposed to display different loading and unloading states of the vehicle body.

[0094] In this embodiment, the locking and unlocking process of the vehicle body frame 1 and the vehicle body is as follows:

[0095] As Figures 17 to 17C shown, the connecting rod member (not shown in the figure) of the vehicle body frame 1 is separated from the vehicle body. At this time, the first cross bar 112 is located in the first position hook groove 151, and the second cross bar 131 is located in the third position hook groove 161. The vehicle body is in the unlocked position or has not been installed on the vehicle body frame 1.

[0096] When the vehicle body needs to be loaded into the vehicle body frame 1, the connecting rod members at the head end and the tail end of the vehicle body are respectively inserted into the head end lock rod hook groove 153 and the tail end lock rod hook groove 163. The vehicle body is pressed downwards. When the connecting rod members of the vehicle body enter the head end lock rod hook groove 153 and the tail end lock rod hook groove 163, they will press the head end hook wheel 15 and the tail end hook wheel 16, thereby driving the head end hook wheel 15 and the tail end hook wheel 16 to rotate around their respective hinge axes, and the head end hook wheel 15 and the tail end hook wheel 16 rotate synchronously and in opposite directions. During the rotation of the head end hook wheel 15, the position of the first cross bar 112 slides from the first position hook groove 151 to the second position hook groove 152. During the rotation of the tail end hook wheel 16, the position of the second cross bar 131 slides from the third position hook groove 161 to the fourth position hook groove 162. At this time, the head end lock rod hook groove 153 and the tail end lock rod hook groove 163 of the vehicle body frame 1 are respectively locked with the connecting rod members of the vehicle body, thereby locking the vehicle body on the vehicle body frame 1. The locked structure is as Figures 16 to 16C shown.

[0097] When the vehicle body needs to be unlocked, as Figures 15 to 15B , a force is applied to the first moving member 11 or the operating member 12 to push the first moving member 11 to move in the D2 direction. When the first moving member 11 moves, it drives the first cross bar 112 to move synchronously. The first cross bar 112 disengages from the second position hook groove 152. At this time, the head end hook wheel 15, due to losing the obstruction of the first cross bar 112, rotates in the R7 direction under the action of the torsion spring and / or its own weight. After the head end hook wheel 15 rotates, the first position hook groove 151 is lapped on the first cross bar 112, and the connecting rod member of the vehicle body at the head end is separated from the head end lock rod hook groove 153.

[0098] Meanwhile, while the first moving part 11 moves along the D2 direction, it drives the two steering linkages 14 to rotate along the R4 and R5 directions respectively, drives the second moving part 13 to move along the D3 direction opposite to D2, drives the second cross bar 131 to move synchronously, and the second cross bar 131 disengages from the fourth position hook groove 162. At this time, since the tail end hook wheel 16 loses the obstruction of the second cross bar 131, it rotates along the R6 direction opposite to R7 under the action of the torsion spring and / or its own weight. After the tail end hook wheel 16 rotates, the third position hook groove 161 overlaps on the second cross bar 131, and the connecting rod member at the tail end of the vehicle body is separated from the tail end lock rod hook groove 163, and the unlocking of the vehicle body is completed. The vehicle body can be taken out from the vehicle body frame 1. The unlocked structure is as shown in Figures 17 to Figure 17C shown.

[0099] The return spring of the first moving part 11 is used to provide an elastic restoring force, enhancing the force for pushing the head end hook wheel 15 when the first cross bar 112 is located in the second position hook groove 152 and the force for pushing the tail end hook wheel 16 when the second cross bar 131 is located in the fourth position hook groove 161.

Claims

1. A first-track locking mechanism of a child carrier base, wherein the base comprises a carrier body frame, a sliding plate, a rotating disk and a disk frame arranged from top to bottom, and the first-track locking mechanism is used to lock the rotating disk on the disk frame, and is characterized in that: The first-line locking mechanism includes two handles, a transmission mechanism and a turntable lock. The turntable lock is vertically arranged. The disk frame is provided with a disk frame lock slot that is compatible with the turntable lock. The transmission mechanism is connected to the handle and the turntable lock respectively. The handle controls the lock head of the turntable lock to move up and down through the transmission mechanism to achieve locking or separation with the disk frame lock slot.

2. The head locking mechanism of the child carrier base according to claim 1, characterized in that: There is one turntable lock and two disk frame lock slots, which are evenly arranged on the same circumference. The turntable lock corresponds to one of the disk frame lock slots after the rotating disk rotates 180°.

3. The head locking mechanism of the child carrier base according to claim 1 or 2, characterized in that: The transmission mechanism includes a first rotating cam, a transmission cam, a connecting rod, a second rotating cam, a locking joint and a locking seat. The first rotating cam, the transmission cam and the second rotating cam are all installed on the rotating disk through a hinge shaft. There are two handles, which are respectively connected to the first rotating cam and the second rotating cam. One of the first rotating cam and the second rotating cam is directly hinged at one end of the connecting rod, and the other is hinged at the other end of the connecting rod through the transmission cam; so that when the first rotating cam and the second rotating cam rotate in opposite directions respectively, they can both drive the connecting rod to move in the same direction.

4. The head locking mechanism of the child carrier base according to claim 3, characterized in that: The connecting rod is connected to the lock joint, and the lock joint is provided with an oblique groove. When the connecting rod moves, the lock joint is driven to move up or down, and the turntable lock that can move up and down is driven up or down by the oblique groove, thereby realizing the locking or separation between the turntable lock and the lock groove of the disk frame, and the connecting rod is also connected to a reset spring; the lock seat is arranged on the rotating disk, and the lock seat is provided with a vertical groove. The turntable lock has a lock pin, which passes through the oblique groove and the vertical groove. The middle part of the lock pin is fixedly inserted into the turntable lock, and the lock pin is driven to move up and down by the joint action of the oblique groove and the vertical groove. When the lock pin moves up and down, the turntable lock is driven to move up and down synchronously.

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