Line retracting device and children's car

Abstract

The application provides a wire body winding and pulling device and a child's vehicle. The wire body winding and pulling device comprises a winding reel for winding a wire body, a volute spring acting on the winding reel and a locking mechanism. The locking mechanism comprises a clamping gear fixed to the outer side of the winding reel and coaxially arranged with the winding reel, a clamping piece with one end clamped with the clamping gear, an elastic piece arranged at the other end of the clamping piece, a rotating piece connected with the clamping piece and an unlocking piece arranged at the side of the rotating piece away from the clamping piece. The clamping piece clamped with the clamping gear makes the winding reel unable to rotate, and then the wire body on the winding reel cannot be manually pulled out or automatically retracted under the action of the volute spring. At this time, the length of the wire body can be kept at a constant value, so that the user can pull with confidence. The arrangement of the unlocking piece and the rotating piece makes the position of the unlocking piece manually adjusted to drive the clamping piece to be separated from the clamping with the clamping gear, so that the winding reel can rotate, and then the wire body on the winding reel can be pulled out and the pulled-out length can be adjusted, or the wire body can be automatically retracted under the action of the volute spring.

Description

Technical Field

[0001] The present application relates to the technical field of children's vehicle accessories, and in particular to a wire retraction device and a children's vehicle. Background Art

[0002] A wire retractor is a device that has a relatively long wire wound inside it and can pull it out and automatically retract it. However, while existing wire retractors can pull out the wire, they are not suitable for some situations. For example, when pulling a fixed-length wire, such as on a children's stroller, the portion of the wire pulled out of the stroller cannot remain fixed, and the wire must be continuously pulled out until it is completely pulled out. This makes it impossible for users to adjust the pulling length to meet different usage requirements.

[0003] Therefore, it is necessary to provide a wire retracting device that can keep the length of the wire pulled out locked and a children's stroller using the wire retracting device. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a wire retraction device that can keep the length of the wire pulled out locked, and a children's stroller using the wire retraction device.

[0005] According to an embodiment of the present invention, a first solution is provided: a wire taking-up device, the wire taking-up device includes a reel for taking up the wire and a spiral spring acting on the reel, the wire taking-up device also includes a locking mechanism, the locking mechanism includes: a clamping gear fixed to the outside of the reel and coaxially arranged with the reel, a clamping member with one end clamped to the clamping gear, an elastic member provided at the other end of the clamping member, a rotating member connected to the clamping member, and an unlocking member provided on the side of the rotating member away from the clamping member.

[0006] Furthermore, the line pulling device also includes a deceleration mechanism, which includes: a driving gear fixed to and coaxially arranged with the reel, a driven gear transmission-connected to the driving gear, and a wind damping blade fixed to the driven gear.

[0007] Furthermore, the deceleration mechanism also includes: a swing rod located between the driving gear and the reel, a spring screw provided on the side of the driving gear away from the swing rod and pressing the driving gear against the swing rod, and a transition gear meshing with the driving gear, the swing rod including a rotating end coaxially arranged with the driving gear and a swing end away from the rotating end and swinging around the rotating end, the transition gear is provided at the swing end, the swing end is close to the driven gear so that the transition gear is meshed with the driven gear, and the swing end is away from the driven gear so that the transition gear is separated from the driven gear.

[0008] Furthermore, the deceleration mechanism also includes: a mounting plate located between the swing rod and the reel, a limiting groove provided on the side of the mounting plate facing the swing rod, and a limiting head provided on the side of the swing end away from the transition gear and extending into the limiting groove.

[0009] Furthermore, the spring screw includes a connecting screw, a washer integrally provided with the connecting screw, and supporting springs located on both sides of the washer.

[0010] Furthermore, the reel is provided with a center hole extending axially along its rotation center axis, and the wire pulling device also includes an outer shell, an installation shaft arranged in the outer shell and passing through the center hole, and the installation shaft is connected to the center part of the spiral spring.

[0011] Furthermore, the wire pulling device further comprises a wire limiting member provided with a wire passing hole, and the wire limiting member is located on a side of the unlocking member away from the clamping member.

[0012] The present invention also provides a baby carriage, which includes a wire retracting device.

[0013] Furthermore, the front of the baby carriage is provided with a storage groove, and the wire pulling device further comprises a hand-pull piece fixed to the wire end of the wire, and the hand-pull piece is partially or completely accommodated in the storage groove.

[0014] Furthermore, the hand-pull piece has an inner cavity and a socket connected to the inner cavity, and the unlocking piece partially extends into the receiving groove and into the inner cavity.

[0015] The present invention has at least the following beneficial effects:

[0016] 1. By setting a connecting piece that is engaged with the engaging gear, the reel cannot rotate, and the wire on the reel cannot be pulled out manually, or it automatically retracts under the action of the spiral spring. At this time, the length of the wire can be maintained at a constant value, so that the user can pull it with confidence.

[0017] 2. By setting an unlocking member and a rotating member connecting the clamping member and the unlocking member, the position of the unlocking member can be manually adjusted to drive the clamping member to disengage from the clamping gear, so that the reel can be rotated, and the wire on the reel can be pulled out and the pull-out length can be adjusted, or it can be automatically retracted under the action of the spiral spring.

[0018] 3. By arranging an elastic member on the side of the clamping member away from the reel, the clamping member can maintain engagement with the clamping gear under the action of elasticity. In addition, the unlocking member can automatically reset when no human force is applied, so as to facilitate next use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional diagram of a wire retracting device according to an embodiment of the present invention;

[0020] Figure 2 This is an exploded schematic diagram of a wire retracting device according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic structural diagram of a locking structure according to an embodiment of the present invention;

[0022] Figure 4 This is an enlarged view of the speed reduction mechanism according to one embodiment of the present invention;

[0023] Figure 5 A schematic diagram of a children's stroller according to an embodiment of the present invention;

[0024] Figure 6 is a cross-sectional view of a children's stroller according to an embodiment of the present invention;

[0025] Figure 7 for Figure 6 Enlarged view of point a in .

[0026] 1. Reel; 2. Center hole; 3. Scroll spring; 4. Clamping gear; 5. Elastic member; 6. Rotating member; 7. Unlocking member; 8. Driving gear; 9. Driven gear; 10. Wind damping blade; 11. Swinging rod; 12. Rotating end; 13. Swinging end; 14. Stopper; 15. Spring screw; 16. Connecting screw; 17. Gasket; 18. Support spring; 19. Transition gear; 20. Mounting plate; 21. Stopper; 22. Wire guide hole; 23. Hand pull member; 24. Inner cavity; 25. Outer cover; 26. Wire retracting device; 27. Stroller; 28. Storage slot; 29. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0028] It should be noted that when an element is referred to as being “fixed on” or “set on” another component, it can be directly on the other component or indirectly set on the other component; when a component is referred to as being “connected to” another component, it can be directly connected to the other component or indirectly connected to the other component.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "

[0030] The orientations or positional relationships indicated by "horizontal", "vertical", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the present application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0032] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0033] Please refer to Figures 1 to 7 An embodiment of the present invention provides a wire pulling device 100, which includes a reel 10 and a spiral spring 20 (also known as a clockwork spring). The reel 10 is used to wind up the wire, and includes a main body and baffles located on both sides of the main body. The wire is wound around the outer periphery of the main body and is located between the two baffles. When the wire is pulled out, the reel 10 rotates forward and drives the spiral spring 20 to deform and store energy. The spiral spring 20 after energy storage can drive the reel 10 to reverse and retract the wire.

[0034] In this embodiment, in order to keep the part of the wire body pulled out locked, the wire body pulling device 100 also includes a locking mechanism. The locking mechanism includes a clamping gear 31, a clamping member 32, an elastic member 33, a rotating member 34 and an unlocking member 35. Among them, the clamping gear 31 is fixed to the outside of the reel 10, that is, fixed to the outer side of the two baffles, and the clamping gear 31 is coaxial with the reel 10. Figure 3 One end of the clamping member 32 can be clamped between two adjacent teeth on the clamping gear 31 to limit the rotation of the reel 10. The other end of the clamping member 32 is provided with an elastic member 33. The elastic member 33 can be a spring or other suitable elastic component. The setting of the elastic member 33 enables the clamping member 32 to have a force toward the clamping gear 31, so that the clamping member 32 and the clamping gear 31 can remain clamped. One end and two ends of the rotating member 34 are respectively connected to the clamping member 32 and the unlocking member 35. The unlocking member 35 is used to realize manual control by the user, so that the user can apply force to the unlocking member 35 to adjust the position of the clamping member 32 through the rotating member 34, thereby realizing the separation of the clamping member 32 and the clamping gear 31, so as to unlock and enable the reel 10 to rotate. In addition, when the unlocking member 35 loses the force from the user, the elastic force of the elastic member 33 can make the engaging member 32 move toward the engaging gear 31 and re-engage with the engaging gear 31. At the same time, through the action of the rotating member 34, the unlocking member 35 can also be reset so that the user can touch it next time.

[0035] It can be understood that the wire mentioned in this application can be applied to all types of objects whose thickness or width is significantly different from their length and which have the property of being able to be bent and coiled. Typical examples include string, wire, rope, band, etc. Of course, the wire used in the children's car mentioned in this application is selected from objects with sufficient tensile strength and suitable for pulling.

[0036] In a more specific embodiment, referring to Figure 3 The rotating member 34 includes a rotating shaft located between the unlocking member 35 and the clamping member 32. The rotating shaft is arranged parallel to the rotation center axis of the reel 10. The rotating member 34 can rotate with the rotating shaft as the rotation center axis. One end of the rotating member 34 is a bent arm, which is hooked in the curved groove on the side wall of the clamping member 32. The other end of the rotating member 34 is movably connected to the limiting groove 471 of the unlocking member 35, so that the movement direction of the clamping member 32 and the movement direction of the unlocking member 35 are roughly parallel.

[0037] In a preferred embodiment, in order to slow down the speed of line recovery to avoid the line accidentally falling out of the hands or the speed of the reel 10 being too fast when actively recovering the line, the line retraction device 100 further includes a deceleration mechanism.

[0038] The deceleration mechanism includes a driving gear 41, a driven gear 42, and a wind damping blade 43. The driving gear 41 is fixedly connected to the reel 10 and is coaxially arranged. The driven gear 42 is in transmission connection with the driving gear 41. It is understood that the transmission connection can be direct meshing or with other gears meshing in the middle. The wind damping blade 43 is fixedly connected to the driven gear 42 to decelerate the reel 10.

[0039] In a preferred embodiment, in order to make the deceleration mechanism act only during the process of thread recovery, the deceleration mechanism further includes a swing rod 44, a spring screw 45, and a transition gear 46. Among them, the swing rod 44 is located between the driving gear 41 and the reel 10, and the swing rod 44 includes a rotating end 441 coaxially arranged with the driving gear 41, and a swing end 442 away from the rotating end 441. The rotating end 441 is an annular component, which is sleeved on the shaft of the driving gear 41 and maintains a movable connection. The swing end 442 can rotate relative to the rotating end 441. The spring screw 45 is located on the side of the driving gear 41 away from the swing rod 44, and the spring screw 45 presses the driving gear 41 against the swing rod 44, so that the driving gear 41 can apply friction to the swing rod 44 during rotation, thereby driving the swing rod 44 to rotate in the same direction. The transition gear 46 is fixed to the swing end 442 and meshes with the driving gear 41.

[0040] In this embodiment, when the reel 10 rotates forward, the swing end 442 approaches the driven gear 42 so that the transition gear 46 engages with the driven gear 42. At this time, the wind damping blade 43 can rotate to thereby play a deceleration role; when the reel 10 rotates reversely, the swing end 442 moves away from the driven gear 42 to separate the transition gear from the driven gear 42. At this time, the wind damping blade 43 does not rotate and does not play a deceleration role.

[0041] In a preferred embodiment, to limit the swing range of the swing lever 44 and prevent the swing end 442 from rotating to the other side of the driven gear 42, thereby causing the wind damping blade 43 to rotate, the reduction mechanism further includes a limit head 443 and a limit slot 471 that cooperates with the limit head 443. A mounting plate 47 is further provided between the swing lever 44 and the reel 10. The limit slot 471 is located on the side of the mounting plate 47 facing the swing lever 44. The limit head 443 is located on the side of the swing end 442 facing away from the transition gear 46. During the rotation of the driving gear 41, the limit head 443 is always within the limit slot 471.

[0042] In a specific embodiment, reference Figure 4 The spring screw 45 includes a connecting screw 451, a washer 452 and a supporting spring 453.

[0043] The washer 452 is integrally arranged with the connecting screw 451, and the support springs 453 are located on both sides of the washer 452. The elastic force on both sides enables the driving gear 41 to exert a certain pressure on the swing rod 44 without completely crushing it. Combined with the reaction force of the mounting plate 47, the swing rod 44 can swing under the limit of the limit groove 471.

[0044] In a specific embodiment, reference Figure 2 and Figure 3 The reel 10 is provided with a central hole 11, which extends axially along the central axis of rotation of the reel 10. The wire take-up device 100 further includes a housing 50 and a mounting shaft 51 disposed within the housing 50. The mounting shaft 51 passes through the central hole 11 and is connected to the central portion of the spiral spring 20.

[0045] In a preferred embodiment, reference Figure 2 The wire pulling device 100 further includes an outer cover 80, which is fixed on the mounting plate 47 and is used to cover and protect the deceleration mechanism.

[0046] In a preferred embodiment, reference Figure 7 The wire retracting device 100 further includes a wire stopper 60 having a wire hole 61 therethrough. The wire hole 61 is used to pass the wire and to position the wire passing through, so that the wire can enter and exit in an orderly manner. The wire stopper 60 is located on the side of the unlocking member 35 away from the clamping member 32.

[0047] In a preferred embodiment, by pre-tightening the spiral spring 20, the reverse rotation speed of the reel 10 can be relatively increased when the forward rotation amount of the reel 10 is not large. Specifically, the spiral spring 20 can be wound around the mounting shaft 51 several times during assembly. This prevents the reverse rotation speed of the reel 10 from being too low when the forward rotation amount of the reel 10 is not large, or in the second half of the line body recovery. In conjunction with the function of the deceleration mechanism, the line body can always maintain a relatively moderate and uniform speed during the recovery process, avoiding hitting users and children.

[0048] In a preferred embodiment, a baby stroller 200 using a wire body retracting device 100 is provided, and a user can conveniently adjust the length of the pulled-out wire body through a locking mechanism and safely pull the baby stroller 200 while maintaining the length.

[0049] In a preferred embodiment, on the stroller 200, the pre-tightened spiral spring 20 and the deceleration mechanism enable the wire to be retracted at a relatively uniform speed. In this embodiment, the wire retraction device 100 can be installed at the front or rear of the stroller.

[0050] In a preferred embodiment, the wire retracting device 100 is disposed inside the front of the vehicle. The wire retracting device 100 further includes a hand pull member 70 fixed to the end of the wire. The user can pull the hand pull member 70 to conveniently pull the wire inside the vehicle. In this embodiment, the front of the child vehicle 200 is further provided with a storage slot 201, in which the hand pull member 70 is partially or completely received. Figure 5 and Figure 7 When the storage groove 201 and the handle member 70 in the storage groove 201 are observed from the outside, they look like a whole with the vehicle body, even though the handle member 70 looks like it is hidden on the vehicle body.

[0051] In a specific embodiment, reference Figure 7 The unlocking member 35 partially extends into the receiving groove 201 without human power, so that the user can push it to unlock. In order to ensure that the hand-pull member 70 and the unlocking member 35 do not conflict with each other, the hand-pull member 70 has an inner cavity 71 and a socket connected to the inner cavity 71. When the hand-pull member 70 is accommodated in the receiving groove 201, it extends into the inner cavity 71 of the hand-pull member 70 through the socket.

[0052] In a preferred embodiment, the wire body has a certain non-tight margin between the reel 10 and the hand-pull member 70 so that the hand-pull member 70 can be smoothly pulled out, and the outside of the hand-pull member 70 is provided with soft rubber so that the hand-pull member 70 can be clamped in the storage groove 201 to prevent the hand-pull member 70 from easily falling out of the storage groove 201.

[0053] In a more specific embodiment, the child vehicle 200 is a twisting vehicle.

[0054] Thus, the present invention has at least the following beneficial effects:

[0055] 1. By providing a clamping member 32 that is engaged with the clamping gear 31, the reel 10 cannot rotate, and the wire on the reel 10 cannot be manually pulled out, or it automatically retracts under the action of the spiral spring 20. At this time, the length of the wire extended can be maintained at a constant value, so that the user can pull it with confidence.

[0056] 2. By providing an unlocking member 35 and a rotating member 34 connecting the clamping member 32 and the unlocking member 35, the position of the unlocking member 35 can be manually adjusted to drive the clamping member 32 to disengage from the clamping gear 31, so that the reel 10 can be rotated, and the wire on the reel 10 can be pulled out and the pull-out length can be adjusted, or it can be automatically retracted under the action of the spiral spring 20.

[0057] 3. By arranging an elastic member 33 on the side of the clamping member 32 away from the reel 10, the clamping member 32 can maintain the clamping engagement with the clamping gear 31 under the action of elasticity. In addition, the unlocking member 35 can automatically reset when it is no longer affected by human power, so as to facilitate the next use.

[0058] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wire reeling device, comprising a reel for reeling a wire and a spiral spring acting on the reel, characterized in that In, The wire retracting device further includes a locking mechanism, which includes: a clamping gear fixed to the outside of the reel and coaxially arranged with the reel, a clamping member with one end clamped with the clamping gear, an elastic member provided at the other end of the clamping member, a rotating member connected to the clamping member, and an unlocking member provided on a side of the rotating member away from the clamping member; The line retracting device further includes a deceleration mechanism, which includes: a driving gear fixed to and coaxially arranged with the reel, a driven gear transmission-connected to the driving gear, and a wind damping blade fixed to the driven gear; The deceleration mechanism further includes: a swing lever located between the driving gear and the reel, a spring screw provided on the side of the driving gear away from the swing lever and pressing the driving gear against the swing lever, and a transition gear meshing with the driving gear, the swing lever including a rotating end coaxially arranged with the driving gear and a swing end away from the rotating end and swinging around the rotating end, the transition gear being provided at the swing end, the swing end being close to the driven gear so that the transition gear meshes with the driven gear, and the swing end being away from the driven gear so that the transition gear is separated from the driven gear.

2. The wire pulling device according to claim 1, characterized in that: The deceleration mechanism also includes: a mounting plate located between the swing rod and the reel, a limiting groove provided on a side of the mounting plate facing the swing rod, and a limiting head provided on a side of the swing end away from the transition gear and extending into the limiting groove.

3. The wire pulling device according to claim 1, characterized in that: The spring screw includes a connecting screw, a washer integrally provided with the connecting screw, and supporting springs located on both sides of the washer.

4. The wire pulling device according to claim 1, characterized in that: The reel is provided with a center hole extending axially along its rotation center axis. The line pulling device also includes a shell, a mounting shaft arranged in the shell and passing through the center hole, and the mounting shaft is connected to the center part of the spiral spring.

5. The wire pulling device according to claim 1, characterized in that: The wire pulling device further includes a wire limiting member provided with a wire passing hole, and the wire limiting member is located on a side of the unlocking member away from the clamping member.

6. A children's vehicle, characterized in that: The baby stroller includes the wire retracting device according to any one of claims 1 to 5.

7. The children's vehicle according to claim 6, characterized in that: The front of the baby carriage is provided with a storage groove, and the wire pulling device further comprises a hand-pull piece fixed to the wire end of the wire body, and the hand-pull piece is partially or completely accommodated in the storage groove.

8. The children's vehicle according to claim 7, characterized in that: The hand-pull piece has an inner cavity and a socket connected to the inner cavity, and the unlocking piece partially extends into the receiving groove and then into the inner cavity.

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