CN209776527U - Baby carriage locking device and baby carriage - Google Patents

Abstract

The utility model relates to a baby carriage locking device and a baby carriage, wherein, the locking device comprises a lock shell; the joint lock assembly (1) is arranged in the lock shell and comprises a sliding piece (12) used for realizing the locking and unlocking of the joint lock assembly (1) to the frame through movement, and a through groove (123) and a first groove (124) are arranged on the same side surface of the sliding piece (12); the second lock assembly (3) comprises a blocking piece (5) arranged in the first groove (124) and a first lock pin (32) penetrating through the through groove (123), and a clamping part is arranged on the first lock pin; wherein the movement of the slider (12) is limited when the first latch pin is in the locked position; when the first lock pin is in the unlocking position, the sliding piece (12) can move, and the blocking piece (5) is matched with the clamping part to prevent the first lock pin from returning to the locking position. The locking device can reduce the occupied space, improve the structural integration level and protect the blocking piece.

Description

Baby carriage locking device and baby carriage

Technical Field

The utility model relates to a children's articles for use technical field especially relates to a perambulator locking device and perambulator.

background

The baby carriage brings convenience for carrying a baby to go out, and the use convenience of the baby carriage is an important factor considered in shopping. In the process of going out, often need to fold the perambulator, need fold the car under the state of embracing the baby moreover when folding, it is higher to the convenience requirement of folding the car.

In order to ensure the use safety of the existing baby carriage, a joint lock is arranged at a joint part of a frame which is folded, and the baby carriage can be folded only when the joint lock is unlocked. Furthermore, in order to prevent the joint lock from being unlocked due to misoperation, a second lock is arranged on the basis of the joint lock, and the joint lock can be unlocked only under the condition that the second lock is unlocked.

Although the safety of the baby carriage is improved, the existing locking device has a complex structure and large occupied space, so that the structure of the baby carriage is redundant, the reliability of the two locks is low, and the operation process of folding the two locks is complicated.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a perambulator locking device and perambulator can improve locking device's compact structure nature.

According to an aspect of the utility model, a baby carriage locking device is provided, include:

A lock case;

The joint lock assembly is arranged in the lock shell and comprises a sliding piece, the sliding piece is configured to realize locking and unlocking of the joint lock assembly on the frame through relative movement with the lock shell, and a through groove and a first groove are formed in the same side surface of the sliding piece; and

The second lock assembly comprises a blocking piece arranged in the first groove and a first lock pin penetrating through the through groove, the first lock pin is provided with a locking position and an unlocking position, and a clamping part is arranged on the first lock pin;

Wherein, in a state where the first lock pin is in the lock position, the movement of the slider is restricted; in a state where the first lock pin is in the unlock position, the slider is movable, and the blocking member cooperates with the engaging portion to prevent the first lock pin from returning to the lock position.

in some embodiments, the first lock pin comprises a first pin shaft section and a second pin shaft section, the cross section of the first pin shaft section is larger than that of the second pin shaft section, and a clamping part is formed on a stepped surface between the first pin shaft section and the second pin shaft section;

When the first lock pin is in a locked position, the blocking piece is abutted against the side wall of the first pin shaft section with a certain pretightening force; under the state that the first lock pin is in the unlocking position, the blocking piece is automatically clamped at the step surface to prevent the first lock pin from returning to the locking position.

In some embodiments, the first groove is located downstream of the through slot in a direction of movement of the glide when the joint lock assembly is unlocked, and the first groove is through a partial depth section of the through slot.

In some embodiments, the blocking member comprises a mounting portion and a blocking portion, the blocking member is embedded in the first groove and is matched with the width of the first groove, the blocking portion is arranged on the surface, facing the first lock pin, of the mounting portion, the thickness of the blocking portion is smaller than that of the mounting portion, and the blocking portion and the surface, facing the bottom of the first groove, of the mounting portion are flush; when the first lock pin is in the unlocking position, the blocking part is matched with the clamping part.

in some embodiments, the surface of the stop for contacting the sidewall of the first latch is planar.

In some embodiments, the lock further comprises a first reset element, the end of the blocking element far away from the first lock pin is provided with a second groove, the first end of the first reset element abuts against the bottom of the second groove, and the second end of the first reset element abuts against the side wall of the first groove.

in some embodiments, the through groove is provided with a limiting part configured to limit the first lock pin to move along the length direction of the through groove in a state that the first lock pin is in the locking position; and when the first lock pin is in the unlocking position, the first lock pin is separated from the blocking of the limiting part so that the sliding piece can move.

In some embodiments, the first lock pin includes a first pin shaft segment and a second pin shaft segment, and the first pin shaft segment has a larger cross-sectional dimension than the second pin shaft segment; the through grooves comprise stepped grooves, the stepped grooves comprise a first-level groove and a second-level groove, the width of the first-level groove is larger than that of the second-level groove, and the first lock pin penetrates through the side where the first-level groove is located;

When the first lock pin is in a locking position, the second pin shaft section is positioned at the first end of the second-stage groove, and the first pin shaft section is matched with the limiting part to block the first lock pin from moving to the second end of the second-stage groove; when the first lock pin is in the unlocking position, the first pin shaft section is integrally separated from the limiting part, and the second pin shaft section can move along the length direction of the second-stage groove.

in some embodiments, the first groove is located downstream of the through groove along a moving direction of the sliding member when the joint lock assembly is unlocked, a bottom of the first groove is lower than a bottom of the first-stage groove, the limiting portion includes limiting faces respectively provided on two side walls of the second-stage groove along a width direction, and the limiting faces extend from the bottom of the first-stage groove to the bottom of the first groove.

In some embodiments, further comprising:

an unlocking operation member provided at an end portion of the first lock pin and configured to place the first lock pin in an unlocking position by being pressed; and

and a second reset element provided between the lock case and the unlock operation member, and configured to return the first lock pin to the lock position when the pressure applied to the unlock operation member is released and the blocking member is disengaged from the engaging portion.

In some embodiments, the vehicle frame further comprises a third resetting piece, the sliding piece is further provided with a groove body, the groove body is located at the upstream of the moving direction of the sliding piece when the through groove is unlocked along the knuckle lock assembly, two ends of the third resetting piece respectively abut against two side walls of the groove body in the moving direction of the sliding piece, and the third resetting piece is configured to enable the sliding piece to return to the position where the knuckle lock assembly locks the vehicle frame.

In some embodiments, the joint lock assembly further comprises a second lock pin arranged at the end part of the sliding piece along the self moving direction and used for locking the vehicle frame.

In some embodiments, the lock shell further comprises a positioning pin, the two side walls of the lock shell are respectively provided with a first mounting hole, the sliding piece is provided with a second mounting hole, and the positioning pin is arranged in the two first mounting holes and the second mounting hole in a penetrating manner; the second mounting hole is communicated with the groove body to allow the positioning pin to enter the groove body when the sliding piece moves.

In some embodiments, further comprising an unlocking drive assembly, the unlocking drive assembly comprising: the first end of the pulling component passes through the second end of the guide part and then is connected with the sliding part, so that the guide part is driven to swing by applying force to the second end of the pulling component, and the sliding part is driven to move.

According to another aspect of the present invention, there is provided a stroller including the stroller locking apparatus of the above embodiment. The baby carriage locking device is arranged at the folding joint part of the frame.

Based on the technical solution, the utility model discloses a baby carriage locking device of embodiment is equipped with the piece of stopping in the first recess of glide for cooperate with the block portion when first lockpin is in the unblock position, in order to prevent that first lockpin gets back to the latched position, this kind of locking device sets up the piece of stopping in the glide, can reduce locking device's occupation space, improves structure integration level, simplifies the structure simultaneously, and can protect the piece of stopping in order to avoid taking place the damage; in addition, when the bicycle needs to be folded, external force is directly applied to enable the first lock pin to move from the locking position to the unlocking position, the blocking piece can be matched with the clamping portion on the first lock pin, the first lock pin is prevented from returning to the locking position, the unlocking process of the two lock assemblies is simplified, the bicycle folding operation is simplified, and the convenience of bicycle folding is improved.

drawings

the accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

Fig. 1 is a side view of an embodiment of the stroller of the present invention in a deployed state;

Fig. 2 is a perspective view of an embodiment of the stroller of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

Fig. 4 is a side view of the stroller of the present invention after being folded;

FIG. 5 is a schematic structural view of the locking device of the stroller of the present invention in a locked state;

FIG. 6 is a schematic view showing the locking device of the stroller in which the unlocking operation member of the two lock assemblies is pressed;

Fig. 7 is a schematic structural view of the stroller locking device of the present invention pulling the pulling assembly to unlock the joint lock assembly for folding;

FIG. 8 is a schematic structural diagram of the first lock pin part returning in the rear travel of the movement of the sliding member in the vehicle folding process in FIG. 7;

fig. 9 is a schematic structural view of the release pulling assembly after the stroller of the present invention is in the retracted state;

FIG. 10 is a schematic illustration of the first and second articulations in a retracted state of the stroller shown in FIG. 9;

Fig. 11 is a schematic structural view of the locking device when the stroller of the present invention is unfolded;

FIG. 12 is a schematic illustration of the first and second articulations in a deployed state of the stroller shown in FIG. 9;

fig. 13 is a front view of the stroller locking apparatus of the present invention in a disassembled state;

Fig. 14 is a schematic view of the back side of the stroller locking apparatus of the present invention in a disassembled state;

Fig. 15 is a schematic front view of the sliding member of the stroller locking apparatus of the present invention connected to the related components;

Fig. 16 is a schematic view of the back structure of the stroller locking apparatus of the present invention, wherein the sliding member is connected to the related components;

FIG. 17 is a schematic view of the components mounted inside the glide;

FIG. 18 is a schematic structural view of one embodiment of a glide.

Detailed Description

the present invention will be described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features considered to be preferred or advantageous.

The terms "first", "second", and the like in the present invention are used for convenience of description only to distinguish different constituent elements having the same name, and do not indicate a sequential or primary-secondary relationship.

In order to clearly describe the various orientations in the following embodiments, the orientation or positional relationship of the indications "upper", "lower", "top", "bottom", "inner" and "outer" etc. are used in the embodiments for convenience of description, and do not indicate or imply that the device referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the invention.

To clearly describe the improvement of the present invention, the installation position of the locking device (hereinafter referred to as "locking device") of the stroller in the stroller will be described. As shown in fig. 1 and 2, the stroller includes a frame, a front wheel set 150, and a rear wheel set 160, the frame including: the front wheel assembly comprises a first frame 110, a second frame 120, a third frame 130 and a push handle 140, wherein the first frame 110 is connected with a front wheel set 150, the second frame 120 is connected with the push handle 140, and the third frame 130 is connected with a rear wheel set 160. In a normal state, the first frame 110 and the second frame 120 are coplanar; when the vehicle needs to be retracted, the first frame 110 and the second frame 120 rotate toward the third frame 130 to form the retracted state shown in fig. 4. The locking device 100 is arranged at the folding joint part of the frame.

in some embodiments, as shown in fig. 3, the locking device 100 is a disk structure with a cantilever, in order to connect the locking device 100 to the vehicle frame, the first and second frames 110 and 120 are provided with a first knuckle coupler 20 and a second knuckle coupler 30 at the ends adjacent to each other, the first and second knuckle couplers 20 and 30 are rotatably provided in the locking device 100, and a mounting interface is protruded to both sides of the locking device 100 for connecting to the first and second frames 110 and 120, respectively, and the third frame 130 is mounted at the cantilever end of the locking device 100.

As shown in fig. 5-18, the present invention provides a stroller locking device 100, which in some embodiments comprises: lock shell, joint lock subassembly 1 and two lock subassemblies 3. Wherein, as shown in fig. 5, the joint lock assembly 1 is arranged in the lock case, the joint lock assembly 1 comprises a sliding member 12, the sliding member 12 is configured to realize the locking and unlocking of the joint lock assembly 1 to the vehicle frame through the relative movement with the lock case, referring to fig. 18, the same side of the sliding member 12 is provided with a through groove 123 and a first groove 124. The second lock assembly 3 includes a blocking member 5 disposed in the first groove 124 and a first lock pin 32 passing through the through groove 123, the first lock pin 32 passes through the through groove 123 from one side of the first groove 124, and has a locking position and an unlocking position, and the first lock pin 32 is provided with a locking portion.

wherein, in the state that the first lock pin 32 is in the locking position, the movement of the sliding member 12 is limited, and the moving direction is along the length direction of the lock case, namely the up-and-down direction in fig. 5; in the state that the first lock pin 32 is in the unlocking position, the sliding piece 12 can move relative to the lock shell, and the blocking piece 5 is matched with the clamping part to prevent the first lock pin 32 from returning to the locking position, so that the first lock pin 32 is kept in the unlocking state to move the sliding piece 12 to unlock the joint lock assembly 1, and the vehicle is folded.

Preferably, the lock case includes a first cover 13 and a second cover 13 ', and the first cover 13 and the second cover 13' are engaged with each other in a thickness direction, which is an axial direction of the first lock pin 32, to form a cavity for accommodating an internal structure of the lock device. The split type lock shell is convenient for installation of an internal structure, and assembly efficiency can be improved. The first cover 13 and the second cover 13 'are provided with second mounting holes 132, the second mounting holes 132 protrude to the outer side of the covers, and the first lock pins 32 can sequentially pass through the through slots 123 and the second mounting holes 132 on the first cover 13 from the second mounting holes 132 of the second cover 13'.

The utility model discloses the locking device of this embodiment will block the piece and establish in the sliding part, can reduce locking device's occupation space, improves the structure integration degree, simplifies the structure simultaneously, can protect in order not to take place to damage blocking the piece moreover, guarantees the reliability of two lock subassemblies locking and unblock.

In addition, when the bicycle needs to be folded, external force is directly applied to enable the first lock pin to move from the locking position to the unlocking position, the blocking piece can be matched with the clamping portion on the first lock pin, the first lock pin is prevented from returning to the locking position, the unlocking process of the two lock assemblies is simplified, the bicycle folding operation is simplified, and the convenience of bicycle folding is improved. Moreover, compared with the structure arranged outside the sliding piece, the structure that the blocking piece is arranged in the sliding piece can reduce the stroke required by the first lock pin 32 to move from the locking position to the unlocking position, thereby reducing the thickness of the locking device in the area where the first lock pin 32 is arranged, improving the structure compactness, and also enabling the unlocking operation to be more sensitive and easy to operate.

as shown in fig. 17, the first lock pin 32 includes a first pin shaft section 321 and a second pin shaft section 322, the first pin shaft section 321 has a larger cross-sectional size than the second pin shaft section 322, and a stepped surface between the first pin shaft section 321 and the second pin shaft section 322 forms a snap-fit portion. The locking device further comprises a first return element 6, such as a spring or the like. As shown in fig. 5, in the locked state of the first locking pin 32, the blocking element 5 is pressed against the side wall of the first pin shaft section 321 with a certain pretension by the first restoring element 6; as shown in fig. 6, in the state where the first lock pin 32 is in the unlock position, the blocking member 5 is automatically caught at the stepped surface to prevent the first lock pin 32 from returning to the lock position.

This embodiment is designed to have the first lock pin 32 as a stepped shaft structure, so that the blocking member 5 is clamped at the stepped surface under the action of the first reset element 6 to prevent the first lock pin 32 from returning to the locking position in the process of moving the first lock pin 32 from the locking position to the unlocking position, and the structure is simple, so that the first lock pin 32 can be reliably kept at the unlocking position after the second lock assembly 3 is unlocked, and the knuckle lock assembly 1 can be further unlocked by moving the sliding member 12. Furthermore, in the state in which the first detent 32 is in the locking position, the blocking element 5 rests against the side wall of the first pin portion 321, and during the displacement of the first detent 32, the blocking element 5 can be held in position by the side wall of the first pin portion 321 in order to provide for a snap-fit at the step surface.

Alternatively, the first lock pin 32 may also be designed as a pin with a diameter equal to the diameter in the length direction, the engaging portion is a groove formed in a side wall of the first lock pin 32, and the blocking member 5 abuts against the side wall of the first lock pin 32 with a certain pre-tightening force under the action of the first resetting element 6 in a state where the first lock pin 32 is in the locked position; in the state where the first lock pin 32 is in the unlocked position, the blocking member 5 is automatically fitted into the groove to prevent the first lock pin 32 from returning to the locked position.

as shown in fig. 18, the first groove 124 is located downstream of the through groove 123 in the moving direction of the slider 12 when the joint lock assembly 1 is unlocked, and the first groove 124 is continuous with a partial depth section of the through groove 123. With reference to fig. 5, the first groove 124 is located below the through groove 123.

The structure can prevent the blocking piece 5 from interfering the first lock pin 32 to move along the length direction of the through groove 123, and the first groove 124 is communicated with a partial depth section of the through groove 123, so that the blocking piece 5 is easily contacted with the side wall of the first lock pin 32 in the state that the second lock assembly 3 is locked and unlocked, the integration level of the blocking piece 5 and the sliding piece 12 can be improved, and the working reliability of the second lock assembly 3 can be improved.

as shown in fig. 5, the blocking member 5 includes a mounting portion 51 and a blocking portion 52, and as shown in fig. 15, the blocking member 5 is embedded in the first groove 124 and is adapted to the width of the first groove 124, and the width direction of the first groove 124 is consistent with the width direction of the sliding member 12. The blocking part 52 is arranged on the surface of the mounting part 51 facing the first lock pin 32, the thickness of the blocking part 52 is smaller than that of the mounting part 51, and the blocking part 52 and the surface of the mounting part 51 facing the bottom of the first groove 124 are flush, so that the blocking part 5 forms an L-shaped structure. In the state where the first lock pin 32 is in the unlock position, the stopper portion 52 is engaged with the engaging portion on the first lock pin 32, for example, with the first lock pin 32 of the stepped structure, the stopper portion 52 abuts against the stepped surface of the first lock pin 32.

This embodiment can reduce the movement stroke required for unlocking the first lock pin 32 by reducing the thickness of the stopper 52, thereby reducing the thickness space occupied by the entire lock device; further, the stopper 52 is more sensitive to the engagement with the engaging portion. Alternatively, the blocking portion 52 may be located at any position of the mounting portion 51 in the thickness direction.

Preferably, the surface of the blocking member 5 for contact with the side wall of the first lock pin 32 is flat. In the process of moving the first lock pin 32, the blocking piece 5 can be prevented from scratching the side wall of the first lock pin 32, and the service life of the locking device is prolonged; moreover, in the process of moving the first lock pin 32, the blocking piece 5 is stably contacted with the first lock pin 32, so that the unbalanced force applied to the first lock pin 32 by the blocking piece 5 in the process of unlocking the second lock can be reduced, and the unlocking success rate is improved. Alternatively, the surface of the blocking member 5 for contact with the side wall of the first lock pin 32 may also be an arc surface or the like.

As shown in fig. 5, the locking device further comprises a first return element 6, for example a spring, the end of the blocking element 5 remote from the first detent 32 being provided with a second recess 511, the first end of the first return element 6 resting against the bottom of the second recess 511 and the second end resting against the side wall of the first recess 124.

this embodiment is provided with the first reset element 6, so that the blocking member 5 abuts against the side wall of the first pin shaft section 321 with a certain pre-load force in the state where the first lock pin 32 is in the locked position, and the blocking member 5 can automatically reset to the step surface of the first lock pin 32 to match under the action of the elastic force in the state where the first lock pin 32 is in the unlocked position, so as to prevent the first lock pin 32 from returning to the locked position again.

As shown in fig. 18, the through groove 123 is provided with a stopper 121 configured to limit the first lock pin 32 from moving in the longitudinal direction of the through groove 123 in a state where the first lock pin 32 is in the lock position, and the longitudinal direction of the through groove 123 coincides with the moving direction of the slider 12; and in the state that the first lock pin 32 is in the unlocking position, the first lock pin 32 is out of the block of the limiting part 121 so that the sliding member 12 can move.

The locking device of the embodiment only allows the sliding piece 12 to move to unlock the joint lock assembly when the second lock assembly 3 is unlocked, so that the safety of the baby carriage in the riding state can be improved.

As shown in fig. 18, the first lock pin 32 includes a first pin shaft section 321 and a second pin shaft section 322, and the first pin shaft section 321 has a larger cross-sectional size than the second pin shaft section 322; the through groove 123 includes a stepped groove including a first-stage groove 1231 and a second-stage groove 1232, the width of the first-stage groove 1231 is greater than the second-stage groove 1232, and the first lock pin 32 passes through the side of the first-stage groove 1231. To define the locked position of the first latch 32, the first latch 32 further includes a pin head 324 connected to an end of the first pin shaft segment 321 distal from the second pin shaft segment 322, as shown in fig. 17.

referring to fig. 5, in the state that the first lock pin 32 is in the locked position, the second pin shaft section 322 is located at the first end (lower end) of the second-stage groove 1232, at this time, the bottom surface of the pin shaft head 324 contacts with the bottom surface of the first groove 124, and the first pin shaft section 321 cooperates with the limiting portion 121 to block the first lock pin 32 from moving to the second end of the second-stage groove 1232, so that the sliding piece 12 cannot move to unlock the joint lock assembly 1.

Referring to fig. 6, in a state where the first latch 32 is in the unlocking position, the first latch shaft section 321 is integrally separated from the stopper portion 121 in the depth direction of the through groove 123, and the second latch shaft section 322 is movable in the length direction of the second-stage groove 1232, and during the movement, the ground of the first latch shaft section 321 may be higher than the stepped surface of the through groove 123 or may contact the stepped surface of the through groove 123.

In this embodiment, the stopper 121 is disposed on the stepped through groove 123, so that the sliding member 12 can be restricted from moving when the stepped first lock pin 32 is located at the locking position, and the sliding member 12 can be allowed to move when the stepped first lock pin is located at the unlocking position, so that the second lock assembly 3 plays a role of restricting the joint lock assembly 1 in a state where the stroller is seated, thereby preventing accidental folding and improving the safety of the stroller.

Specifically, as shown in fig. 18, the first groove 124 is located downstream of the through groove 123 along the moving direction of the sliding member 12 when the joint lock assembly 1 is unlocked, the bottom of the first groove 124 is lower than the bottom of the first-stage groove 1231, the limiting portion 121 includes limiting surfaces respectively provided on the two side walls of the second-stage groove 1232 along the width direction, and the limiting surfaces extend from the bottom of the first-stage groove 1231 to the bottom of the first groove 124. For example, the stopper surface may have an arc shape with a radius of curvature corresponding to the radius of the first pin shaft section 321, and the first lock pin 32 may be stably held in the lock position by performing stopper by surface contact. Or the stop surface may be beveled to hold the first lock pin 32 in the locked position by a wire contact.

this embodiment can hold the first lock pin 32 in the locking position by two separate retaining surfaces, which is structurally convenient to arrange the first groove 124 and the through groove 123 in a through manner so that the blocking member 5 is in contact engagement with the first lock pin 32. Such a configuration requires improvements to slide 12 for integrating barrier 5 into slide 12.

In some embodiments, as shown in fig. 5, such a locking device further comprises: an unlocking operating member 31 and a second reset element 4. Wherein the unlocking operation member 31 is provided at an end portion of the first lock pin 32, and is configured to place the first lock pin 32 in the unlocking position by being pressed; the second return element 4 is provided between the lock case and the unlocking operation member 31, and is configured to return the first lock pin 32 to the lock position in a case where the pressure applied to the unlocking operation member 31 is released and the blocking member 5 is disengaged from the bottom of the first pin shaft section 321.

Specifically, as shown in fig. 17, the first lock pin 32 further includes a third pin shaft section 323, the third pin shaft section 323 is disposed at an end of the second pin shaft section 322 remote from the first pin shaft section 321, and the third pin shaft section 323 may have a smaller cross-sectional size than the second pin shaft section 322. The unlocking operation member 31 is mounted on the third pin section 323, and may be a push button, for example. The second restoring element 4 is arranged between the intermediate mounting of the unlocking actuating element 31 and the housing and is in abutment with the lock housing, for example by means of a spring.

In some embodiments, as shown in fig. 5 and fig. 18, such a locking device further includes a third resetting member 2, such as a spring, the sliding member 12 is further provided with a slot 125, the slot 125 is located upstream of the through slot 123 along the moving direction of the sliding member 12 when the joint lock assembly 1 is unlocked, and two ends of the third resetting member 2 respectively abut against two side walls of the slot 125 along the moving direction of the sliding member 12, and are configured to return the sliding member 12 to the position where the joint lock assembly 1 locks the vehicle frame. To prevent the third restoring member 2 from being displaced in the slot 125, a positioning structure 126 may be provided on the inner top wall of the slot 125.

The embodiment can automatically reset and move the sliding piece 12 to the position that the joint lock assembly 1 locks the frame after the baby carriage is displayed, thereby simplifying the operation and improving the use safety of the baby carriage.

As shown in fig. 16, the joint lock assembly 1 further includes a second lock pin 11 provided at an upstream end of the slider 12 in the moving direction thereof, for locking the vehicle frame. Specifically, referring to fig. 1 and 2, a first joint connecting member 20 is disposed at an end of the first frame 110, a second joint connecting member 30 is disposed at an end of the second frame 120, and the first joint connecting member 20 and the second joint connecting member 30 can rotate around a rotating shaft on a lock housing to fold and unfold the frames. The bottoms of the first joint connector 20 and the second joint connector 30 are provided with concave parts, and when the sliding piece 12 moves upwards to be clamped into the concave parts, the two joint connectors are locked, and refer to fig. 12; when the glide 12 is moved down to disengage the recess, the two knuckle connectors are unlocked and rotated to effect retraction, see fig. 10.

Specifically, the main body of the sliding member 12 is a rectangular parallelepiped, and a groove 125, a through groove 123 and a first groove 124 are sequentially provided from top to bottom in the length direction of the sliding member, and the groove 125 and the through groove 123 are independent from each other. Further, the top end of the sliding member 12 is provided with a thickness reducing structure to provide the second lock pin 11 at both sides in the thickness direction, respectively.

As shown in fig. 13 and 18, the locking device further includes a positioning pin 14, wherein two side walls of the lock case are provided with first mounting holes 132, the sliding member 12 is provided with second mounting holes 127, and the positioning pin 14 is inserted into the two first mounting holes 132 and the second mounting holes 127; wherein the second mounting hole 127 is communicated with the slot 125 to allow the positioning pin 14 to enter the slot 125 when the sliding member 12 moves, for example, the second mounting hole 127 may be a half-hole. The positioning pin 14 is engaged with the second mounting hole 127 when the first lock pin 32 is in the locked position, and the positioning pin 14 enters the groove 125 when the first lock pin 32 is in the unlocked position. Thus, by providing the locating pin 14, the initial position of the slide 12 when the first locking pin 32 is in the locked position can be defined.

In some embodiments, as shown in fig. 5, such a locking device further comprises an unlocking drive assembly comprising: a pulling component and a guide member 8, wherein the first end of the guide member 8 is rotatably connected outside the lock shell, and the pulling component transmits the external force to the sliding member 12 through the swinging of the guide member 8. By providing the guide 8, it is more labor-saving to move the slider 12 by applying an external force.

Further, as shown in fig. 13 and 14, a support seat 50 is provided at one side of the third frame 140, the support seat 50 includes a hinge seat 51 provided at an outer side and a support portion 52 provided at a top of the hinge seat 51, the support portion 52 is fixed with the lock case, and a first end (upper end) of the guide member 8 is rotatably mounted on the hinge seat 51. The pulling assembly may comprise a force application section 9 and a force transmission section 7, wherein the two ends of the force application section 9 are connected to the left and right sides of the guiding member 8 of the stroller respectively, and the connection point is located at the second end (lower end) of the guiding member 8, for example, the second end of the guiding member 8 is provided with a first hole 81 for connecting the force application section 9. The support seat 50 is provided with a second hole 53 at the middle position along the length direction for the force transmission section 7 to pass through. The first end of the force transfer section 7 is connected to the guide member 8 at a position intermediate the ends, and the second end is connected to the bottom of the slide 12 after passing through the second hole 53.

in order to facilitate the force transmission, a third hole 141 may be further formed on both side walls of the third frame 140 in the width direction, and the pin 40 may be inserted through the third hole 141, and the force transmission section 7 may be connected to the bottom of the sliding member 12 after bypassing the pin 40.

In order to connect the second end of the force transmission section 7 with the bottom of the sliding member 12, as shown in fig. 16, a protrusion 122 is provided at the bottom of the sliding member 12, for example, the protrusion 122 includes a semi-cylindrical portion and a rectangular parallelepiped portion, the rectangular parallelepiped portion is connected with the bottom of the sliding member 12, and the axis of the semi-cylindrical portion is aligned with the thickness direction of the sliding member 12. The lateral wall of the semi-cylindrical part is provided with an arc-shaped groove 128 along the circumferential direction, a straight groove 124 along the radial direction, and a fourth hole 125 along the axial line, and two ends of the straight groove 124 are respectively communicated with the arc-shaped groove 128 and the fourth hole 124. The second end of the force transmission section 7 passes through the arc-shaped slot 128, the straight slot 124 and the fourth hole 124 in sequence and then is fixed. This connection improves the reliability of the fastening of the force transmission section 7 to the sliding element 12.

by designing the pulling assembly as a segmented structure, the force application section 9 and the force transmission section 7 can adopt different structures, for example, the force application section 9 can adopt a belt-shaped member with a larger width and easy operation by a user, and the force transmission section 7 can adopt a belt-shaped member with a smaller width and easy force transmission, or can also adopt a rope or chain structure.

according to the embodiment, after the second lock assembly 3 is unlocked, the sliding piece 12 is driven to move to the second lock pin 11 to be separated from the locking position by actively applying force to the pulling assembly so as to retract the vehicle.

Secondly, the utility model also provides a perambulator, in some embodiments, include: the baby carriage locking device is arranged at the joint part of the folding of the frame. The detailed structure of the frame and the connection relationship between the locking device and the frame have been received in the foregoing, and will not be described herein again.

The operation process of the baby carriage folding and unfolding and the working principle of the locking device of the present invention will be described in detail with reference to fig. 1 to 18.

Fig. 5 is a schematic view of the entire locking device in a locked state. Referring to fig. 18, the first lock pin 31 is located at the lower end of the through slot 123, the stepped surface at the bottom of the first pin shaft section 321 contacts the bottom surface of the first groove 124, a part of the length of the first pin shaft section 321 extends into the second-stage slot 1232, the first pin shaft section 321 cannot move upwards along the through slot 123 under the blocking of the limiting part 121, and the unlocking operation member 32 is in a sprung state and protrudes out of the mounting hole of the lock case under the action of the second reset element 4. The blocking element 5 is in contact with the side wall of the first pin section 321 under the action of the first restoring element 6. At this time, due to the blocking effect of the limiting part 121, the sliding part 12 cannot move downwards, so that the joint lock assembly 1 is in a state of locking the frame, and the second lock assembly 3 plays a role of a safety lock.

Fig. 6 is a schematic view of a state where the unlocking operation member 31 is depressed. When the vehicle needs to be unlocked and folded, the unlocking operation piece 31 is pressed in, so that the stepped surface of the first lock pin 31 is separated from the limiting part 121, the first pin shaft section 321 is integrally positioned on the limiting part 121 along the thickness direction of the sliding piece 12, and simultaneously, under the action of the first reset element 6, the top of the blocking part 52 of the blocking piece 5 is in contact with the side wall of the second pin shaft section 322, and the side part of the blocking piece is in contact with the stepped surface, so that the first lock pin 31 is blocked from returning to the locking position from the unlocking position.

Fig. 7 is a schematic view of the state of pulling the force applying section 9 to retract the vehicle. The force application section 9 is pulled towards the inside of the vehicle relative to the third frame 140, so that the guide member 8 rotates upwards around the hinge point of the first end to drive the force transmission section 7 to pull the sliding member 12 downwards, the second lock pin 11 is separated from the concave parts of the first joint connecting member 20 and the second joint connecting member 30, the frame is unlocked, and the frame can be folded. At this time, the first lock pin 32 is located at the top end of the through slot 123, i.e., the second pin shaft section 322 contacts the sidewall of the upper end of the second-stage slot 1232, which is the extreme position of downward movement of the slide 12.

Fig. 8 is a schematic view showing a state in which the first lock pin 32 is partially returned during the process of pulling the slider 12 downward in fig. 7. In the rear stroke of the downward pulling sliding member 12, the second shaft portion 322 of the first lock pin 32 moves upward in the second-stage groove 1232, the blocking member 5 releases the blocking of the first lock pin 32, and the first lock pin 32 together with the unlocking operation member 31 returns to the right under the action of the second return spring 4 until the stepped surface of the first lock pin 32 contacts the stepped surface of the through groove 123, but since the stepped surface of the through groove 123 is higher than the bottom surface of the first groove 124, the first lock pin 32 together with the unlocking operation member 31 cannot reach the locking position after returning.

Fig. 9 is a schematic view of the state of the locking device after the vehicle is completely collected. After the vehicle is folded, the first joint connecting piece 20 and the second joint connecting piece 30 rotate to the positions shown in fig. 10, the force application section 9 is released, the joint lock assembly 1 returns upwards for a short distance under the action of the third return spring 2, but finally cannot return to the topmost end under the action of the first joint connecting piece 20 and the second joint connecting piece 30, and the second lock assembly 3 is in an unlocked state all the time.

fig. 11 is a schematic view showing a state of the locking device when the vehicle frame is unfolded. The first frame 110 and the second frame 120 are rotated outwards from two sides to unfold the frames, the blocking effect of the first lock pin 11 by the first joint connector 20 and the second joint connector 30 is released, and the joint lock assembly 1 moves upwards under the action of the third return spring 2 to be matched with the concave part, so that locking is realized. Meanwhile, the relative position of the second lock pin 32 and the blocking member 5 is such that the blocking member 5 cannot block the second lock pin 32 from returning to the locking position, and the second lock pin 32 returns to the locking position shown in fig. 5 under the action of the second return spring 4, thereby performing a two-way safety lock function.

The above is to the utility model provides a baby carriage locking device and baby carriage introduces in detail. The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to aid in understanding the methods and their core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (15)

1. A stroller locking device, comprising:

A lock case;

The joint lock assembly (1) is arranged in the lock shell, the joint lock assembly (1) comprises a sliding piece (12), the sliding piece (12) is configured to realize locking and unlocking of the joint lock assembly (1) to a frame through relative movement with the lock shell, and a through groove (123) and a first groove (124) are formed in the same side face of the sliding piece (12); and

The second lock assembly (3) comprises a blocking piece (5) arranged in the first groove (124) and a first lock pin (32) penetrating through the through groove (123), the first lock pin (32) is provided with a locking position and an unlocking position, and a clamping part is arranged on the first lock pin (32);

wherein in a state where the first lock pin (32) is in a locked position, movement of the slider (12) is restricted; in a state where the first lock pin (32) is in an unlocked position, the slider (12) is movable, and the stopper (5) cooperates with the catch portion to prevent the first lock pin (32) from returning to the locked position.

2. The stroller locking device according to claim 1, wherein the first locking pin (32) comprises a first pin shaft section (321) and a second pin shaft section (322), and the first pin shaft section (321) has a larger cross-sectional dimension than the second pin shaft section (322), and a stepped surface between the first pin shaft section (321) and the second pin shaft section (322) forms the engaging portion;

In the state that the first lock pin (32) is in the locked position, the blocking element (5) abuts against the side wall of the first pin shaft section (321) with a certain pre-load force; in a state where the first lock pin (32) is in the unlock position, the stopper (5) is automatically caught at the stepped surface to prevent the first lock pin (32) from returning to the lock position.

3. Baby carriage locking device according to claim 1, characterized in that the first groove (124) is located downstream of the through slot (123) in the direction of movement of the glide (12) when the joint lock assembly (1) is unlocked, and the first groove (124) is through a partial depth section of the through slot (123).

4. the stroller locking device according to claim 1, wherein the blocking member (5) comprises a mounting portion (51) and a blocking portion (52), the blocking member (5) is embedded in the first groove (124) and is adapted to the width of the first groove (124), the blocking portion (52) is provided on the surface of the mounting portion (51) facing the first latch (32) and has a thickness smaller than that of the mounting portion (51), and the surfaces of the blocking portion (52) and the mounting portion (51) facing the bottom of the first groove (124) are flush; the blocking portion (52) is engaged with the engaging portion in a state where the first lock pin (32) is in an unlocked position.

5. Baby carriage locking device according to claim 1 characterized in that the surface of the blocking element (5) intended to come into contact with the side wall of the first detent (32) is plane.

6. Baby carriage locking device according to claim 1, characterized in that it further comprises a first return element (6), the end of the blocking element (5) remote from the first detent (32) being provided with a second recess (511), the first end of the first return element (6) resting against the bottom of the second recess (511) and the second end resting against the side wall of the first recess (124).

7. the stroller locking device according to claim 1, wherein the through groove (123) is provided with a limiting portion (121) configured to limit the first lock pin (32) from moving along a length direction of the through groove (123) in a state that the first lock pin (32) is in a locked position; and when the first lock pin (32) is in the unlocking position, the first lock pin (32) is separated from the blocking of the limiting part (121) so that the sliding piece (12) can move.

8. The stroller locking device of claim 7, wherein the first locking pin (32) comprises a first pin shaft segment (321) and a second pin shaft segment (322), and the first pin shaft segment (321) has a larger cross-sectional dimension than the second pin shaft segment (322); the through groove (123) comprises a stepped groove comprising a first-stage groove (1231) and a second-stage groove (1232), the first-stage groove (1231) having a greater width than the second-stage groove (1232), and the first locking pin (32) passing through the side of the first-stage groove (1231);

in a state that the first lock pin (32) is in a locked position, the second pin shaft section (322) is located at a first end of the second-stage groove (1232), and the first pin shaft section (321) cooperates with the stopper portion (121) to block the first lock pin (32) from moving to a second end of the second-stage groove (1232); when the first lock pin (32) is in the unlocked position, the first pin shaft section (321) is entirely separated from the limiting part (121), and the second pin shaft section (322) is movable in the length direction of the second-stage groove (1232).

9. the stroller locking apparatus according to claim 8, wherein the first groove (124) is located downstream of the through groove (123) in a moving direction of the slider (12) when the joint lock assembly (1) is unlocked, a bottom of the first groove (124) is lower than a bottom of the first-stage groove (1231), and the stopper portion (121) includes stopper surfaces respectively provided on both side walls of the second-stage groove (1232) in a width direction, the stopper surfaces extending from the bottom of the first-stage groove (1231) to the bottom of the first groove (124).

10. The stroller locking device of claim 1, further comprising:

an unlocking operation member (31) provided at an end of the first lock pin (32) and configured to bring the first lock pin (32) into an unlocking position by being pressed; and

And a second return element (4) provided between the lock case and the unlocking operation member (31) and configured to return the first lock pin (32) to the lock position when the pressure applied to the unlocking operation member (31) is released and the blocking member (5) is disengaged from the engaging portion.

11. the stroller locking device according to claim 1, further comprising a third reset member (2), wherein a groove (125) is further disposed on the sliding member (12), the groove (125) is located at an upstream of the through groove (123) along a moving direction of the sliding member (12) when the joint lock assembly (1) is unlocked, two ends of the third reset member (2) respectively abut against two side walls of the groove (125) along the moving direction of the sliding member (12), and the third reset member is configured to enable the sliding member (12) to return to a position where the joint lock assembly (1) locks the frame.

12. A stroller locking device according to claim 1, characterized in that said joint lock assembly (1) further comprises a second lock pin (11) provided at an upstream end of said slider (12) in the direction of movement thereof for locking the frame.

13. The stroller locking device according to claim 11, further comprising a positioning pin (14), wherein the lock housing is provided with a first mounting hole (132) on each of two side walls thereof, the sliding member (12) is provided with a second mounting hole (127), and the positioning pin (14) is inserted into the two first mounting holes (132) and the second mounting hole (127); the second mounting hole (127) is communicated with the groove body (125) so as to allow the positioning pin (14) to enter the groove body (125) when the sliding piece (12) moves.

14. the stroller locking device of claim 1, further comprising an unlocking drive assembly, the unlocking drive assembly comprising: the pulling assembly and the guide piece (8), the first end of the guide piece (8) is rotatably connected outside the lock shell, the first end of the pulling assembly passes through the second end of the guide piece (8) and then is connected with the sliding piece (12), so that the guide piece (8) is driven to swing by applying force to the second end of the pulling assembly, and the sliding piece (12) is driven to move.

15. A stroller, comprising: a frame and a stroller locking apparatus according to any one of claims 1 to 13, wherein the stroller locking apparatus is provided at a folding joint portion of the frame.