CN111907580B - Rotatable and lockable articulation joint - Google Patents
Rotatable and lockable articulation joint Download PDFInfo
- Publication number
- CN111907580B CN111907580B CN202010962357.3A CN202010962357A CN111907580B CN 111907580 B CN111907580 B CN 111907580B CN 202010962357 A CN202010962357 A CN 202010962357A CN 111907580 B CN111907580 B CN 111907580B
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- connecting piece
- rotatable
- inner core
- shell
- articulation joint
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- 238000007789 sealing Methods 0.000 claims description 14
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000005060 rubber Substances 0.000 claims description 9
- 210000000078 claw Anatomy 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
- B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
- B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
- Prostheses (AREA)
Abstract
The invention belongs to the technical field of baby carrier accessories, and particularly relates to a rotatable and lockable movable joint which comprises a first connecting piece, a second connecting piece and a movable limiting device, wherein the movable limiting device is connected between the first connecting piece and the second connecting piece, and the movable limiting device radially displaces when rotating so as to realize the rotation and locking of the second connecting piece. According to the invention, unlocking is realized through rotation, and a button is not required to be pressed during unlocking, so that the force application of a user is facilitated, and the operation difficulty can be reduced; when the device is applied to the baby carriage, the torque force applied by an operator to the rotary button can not cause the side surface or front and back stress of the carriage, so that the side turning or front and back movement of the baby carriage in the unlocking process can be avoided.
Description
Technical Field
The invention belongs to the technical field of baby carrier accessories, and particularly relates to a rotatable and lockable movable joint.
Background
The baby carriage is a tool carriage which is designed for facilitating outdoor activities of babies. In order to save space during storage, the frame of a common baby carriage is designed to be of a rotatable and foldable structure, and the control of the rotatable and foldable structure is realized by virtue of movable joints. The existing movable joint is unlocked by pressing the button when in use, the button is pressed on one side, the button is pressed on two sides simultaneously, and after the button is pressed or pushed, the frame is unfolded or folded, so that an operator is required to apply great pressure or pushing force to the button in the operation mode, the operation difficulty is high, and the operation mode is particularly unfriendly to female users with small hand strength. Moreover, the buttons pressed at two sides need to be pressed at the same time, so that the operation difficulty is high; the push button that unilateral was pressed, pressure can indirectly transmit to the frame when pressing, makes frame both sides or fore-and-aft atress unbalanced, and push button needs very big power in addition, leads to the perambulator to turn on one's side or back and forth movement easily, has the potential safety hazard.
Disclosure of Invention
In order to solve the problems, the invention provides a rotatable and lockable movable joint, which has the following technical scheme:
The utility model provides a rotatable and movable joint of locking, includes first connecting piece and second connecting piece, still includes movable stop device, movable stop device connects first connecting piece with between the second connecting piece, movable stop device takes place radial displacement in order to realize when rotatory rotation and locking of second connecting piece.
The rotatable and lockable articulation joint described above is further preferred: the movable limiting device comprises a shell and an inner core; the shell is fixedly connected with the first connecting piece and rotatably connected with the second connecting piece; the inner core is positioned in the outer shell and protrudes out of the outer shell, and the inner core is used for radial displacement to rotate or lock the second connecting piece when rotating.
The rotatable and lockable articulation joint described above is further preferred: the housing includes a side chamber and a communication hole; the side chamber is positioned on the side wall of the shell, and the communication hole is communicated with the side chamber; the inner core comprises a mandrel and a sliding block; the sliding block is in sliding fit with the side cavity, and an accommodating cavity is formed in the sliding block; the periphery of the mandrel is provided with a protruding portion and a matching portion, the mandrel is inserted into the communication hole and the accommodating cavity, the matching portion is rotatably connected with the communication hole, the protruding portion is in contact with the inner wall of the accommodating cavity, and the outline of the accommodating cavity is larger than that of the protruding portion.
The rotatable and lockable articulation joint described above is further preferred: the sliding block is provided with a guide groove, the shell is provided with a guide bar, and the guide groove is in sliding fit with the guide bar.
The rotatable and lockable articulation joint described above is further preferred: and an elastic strip which can be elastically deformed and is always in a pressed state is arranged between the sliding block and the shell in the sliding direction of the sliding block.
The rotatable and lockable articulation joint described above is further preferred: the elastic strip is any one of a rubber strip, a compression spring and a plate spring.
The rotatable and lockable articulation joint described above is further preferred: the first connecting piece is provided with an avoidance groove and connecting arms positioned at two sides of the avoidance groove; the avoidance groove is used for providing space for the rotation of the second connecting piece; the connecting arm is used for connecting the shell, a connecting hole is formed in the connecting arm, and the connecting hole is connected with two ends of the shell in a clamping mode.
The rotatable and lockable articulation joint described above is further preferred: the anti-rotation clamping blocks are arranged on the connecting holes, clamping claws are arranged at two ends of the shell, and the anti-rotation clamping blocks are connected with the clamping claws in a clamping mode.
The rotatable and lockable articulation joint described above is further preferred: the connecting holes comprise first holes and second holes, and the number of the anti-rotation clamping blocks on the first holes is smaller than that of the anti-rotation clamping blocks on the second holes; a seal is disposed on the second bore.
The rotatable and lockable articulation joint described above is further preferred: the sealing element is connected with the second hole in a clamping way.
The rotatable and lockable articulation joint described above is further preferred: the second connecting piece is provided with a sleeving hole, and the side wall of the sleeving hole is provided with a clamping groove; the shell is located in the sleeve hole and rotatably connected with the sleeve hole, and the clamping groove is used for being connected with the inner core in a clamping mode.
The rotatable and lockable articulation joint described above is further preferred: the device also comprises a resetting device, wherein the resetting device is arranged on the inner core and connected with the shell and is used for driving the inner core to reset when the inner core is displaced.
The rotatable and lockable articulation joint described above is further preferred: the reset device is any one or combination of a torsion spring, an extension spring, a compression spring and a rubber strip.
The rotatable and lockable articulation joint described above is further preferred: the rotary knob is connected with one end of the inner core and is used for providing a position for rotating the inner core.
The rotatable and lockable articulation joint described above is further preferred: the knob comprises a connecting body and a jacket; the connecting body is fixedly connected with one end of the inner core, and the outer sleeve is positioned on the side wall of the connecting body.
The rotatable and lockable articulation joint described above is further preferred: the knob also comprises a sealing buckle, wherein the sealing buckle is positioned at one end of the connecting body away from the inner core and is connected with the connecting body in a clamping way.
The rotatable and lockable articulation joint described above is further preferred: the side wall of the outer sleeve is provided with an anti-slip protrusion and/or an anti-slip recess, and the outer sleeve is made of any one of plastic, rubber and thermoplastic elastomer materials.
The rotatable and lockable articulation joint described above is further preferred: the first connecting piece is provided with a limiting bulge, the knob is provided with a limiting notch, and the limiting bulge is matched with the limiting notch and used for limiting the rotation range of the movable limiting device.
Analysis shows that compared with the prior art, the invention has the following advantages:
The first and second connectors of the rotatable and lockable articulation joint of the present invention are rotatable relative to one another for receipt. When the movable limiting device is in a supporting state, the first connecting piece and the second connecting piece are locked by the movable limiting device; when the movable limiting device is retracted from the supporting state, unlocking can be achieved through rotating the movable limiting device. According to the invention, unlocking is realized through rotation, and a button is not required to be pressed during unlocking, so that the force application of a user is facilitated, and the operation difficulty can be reduced; when the device is applied to the baby carriage, the torque force applied by an operator to the rotary button can not cause the side surface or front and back stress of the carriage, so that the side turning or front and back movement of the baby carriage in the unlocking process can be avoided.
Drawings
Fig. 1 is a schematic view of the connection of a rotatable and lockable articulation joint of the present invention.
Fig. 2 is an exploded view of the rotatable and lockable articulation joint of the present invention.
Fig. 3 is an exploded view of the movable stop device of the present invention.
Fig. 4 is a schematic structural view of the housing of the present invention.
Fig. 5 is a schematic structural view of the mandrel of the present invention.
Fig. 6 is a schematic diagram of the fit of the inner core and outer shell of the present invention.
Fig. 7 is a schematic view of the rack and pinion mechanism of the present invention.
Fig. 8 is a schematic view of the structure of the worm and gear and ball screw mechanism of the present invention.
In the figure: 1-a first connector; 2-a second connector; 3-a movable limiting device; 4-sealing buckle; 5-coat; a 6-linker; 7-resetting means; 8-a mandrel; 9-a slider; 10-a housing; 11-snap springs; 12-communicating holes; 13-a guide bar; 14-clamping jaws; 15-a boss; 16-mating part; 17-a receiving cavity; 18-rack; 19-gear; 20-worm; 21-worm gear; 22-screw rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "coupled" and "connected" as used herein are to be construed broadly and may be, for example, fixedly coupled or detachably coupled; either directly or indirectly through intermediate components, the specific meaning of the terms being understood by those of ordinary skill in the art as the case may be.
Referring to fig. 1 to 8, fig. 1 is a schematic diagram illustrating connection of a rotatable and lockable movable joint according to the present invention; FIG. 2 is an exploded view of the rotatable and lockable articulation joint of the present invention; FIG. 3 is an exploded view of the movable stop device of the present invention; FIG. 4 is a schematic structural view of the housing of the present invention; FIG. 5 is a schematic view of the structure of the mandrel of the present invention; FIG. 6 is a schematic diagram of the fit of the inner core and outer shell of the present invention; FIG. 7 is a schematic view of the rack and pinion mechanism of the present invention; fig. 8 is a schematic view of the structure of the worm and gear and ball screw mechanism of the present invention.
As shown in fig. 1 to 3, 7 and 8, the present invention provides a rotatable and lockable movable joint, which comprises a first connector 1 and a second connector 2, and further comprises a movable limiting device 3, wherein the movable limiting device 3 is connected between the first connector 1 and the second connector 2, and can be radially displaced during rotation so as to realize rotation and locking of the second connector 2.
When the space occupation needs to be reduced, the first connecting piece 1 and the second connecting piece 2 can rotate relatively so as to be convenient to store. When in a supporting state, the first connecting piece 1 and the second connecting piece 2 are locked by the movable limiting device 3; when the invention is retracted from the supporting state, unlocking can be realized by rotating the movable limiting device 3. According to the invention, unlocking is realized through rotation, and a button is not required to be pressed during unlocking, so that the force application of a user is facilitated, and the operation difficulty can be reduced; when the device is applied to the baby carriage, the torque force applied by an operator to the rotary button can not cause the side surface or front and back stress of the carriage, so that the side turning or front and back movement of the baby carriage in the unlocking process can be avoided.
In the present invention, the movable stopper 3 includes an outer shell 10 and an inner core; the housing 10 is fixedly connected to the first connecting member 1 and rotatably connected to the second connecting member 2. The inner core is located in the outer shell 10 and protrudes out of the outer shell 10, and can radially displace when rotating, so that the second connecting piece 2 is unlocked to rotate the second connecting piece 2 or the second connecting piece 2 is locked.
In the present invention, the movement of the core can be achieved in various forms. As shown in fig. 7, in one embodiment of the invention, this may be accomplished based on a rack and pinion mechanism. Specifically, the movable limiting device 3 further comprises a gear 19, a gear shaft and a rack 18; the second connector 2 is provided with a groove. A rack 18 is mounted on the core in engagement with a gear 19. The gear shaft is mounted in the housing 10 with its axis coincident with the axis of the housing 10, rotatably connected to the housing 10, and the gear 19 is mounted on the gear shaft and is meshed with the rack 18. When the second connecting piece 2 needs to be locked, the gear shaft is rotated, the gear 19 is driven to rotate, the rack 18 meshed with the gear 19 translates, and the inner core is inserted into the groove of the second connecting piece 2, so that the relative positions of the first connecting piece 1 and the second connecting piece 2 are locked. When unlocking is required, the gear shaft is reversely rotated, and the inner core is retracted into the outer shell 10, so that unlocking is realized.
In another embodiment of the invention, this can also be achieved based on a sprocket and chain mechanism. Specifically, the rack 18 in the above embodiment is replaced with a chain; the gear 19 in the above embodiment is replaced with a sprocket. The chain wheel rotates to drive the chain to move linearly, so as to drive the inner core to lock the second connecting piece 2 or unlock the second connecting piece 2.
In yet another embodiment of the invention, as shown in fig. 8, it may also be implemented based on a worm and gear and ball screw mechanism. Specifically, the movable limiting device 3 further comprises a worm 20, a worm wheel 21 and a screw 22. The worm 20 is mounted within the housing 10 in rotatable connection with the housing 10 (e.g., by mounting bearings between the worm 20 and the housing 10 to effect rotatable connection of the worm 20 to the housing 10), the axis of the worm 20 coinciding with the axis of the housing 10. The worm wheel 21 is positioned in the shell 10 and matched with the worm 20, the axis of the worm wheel 21 is vertical to the axis of the worm 20, the worm wheel 21 is hollow, threads matched with the screw rod 22 are machined on the hollow side wall, the screw rod 22 is inserted in the worm wheel 21 and matched with the threads of the worm wheel 21, and one end of the screw rod 22 is connected with the inner core. When the second connecting piece 2 needs to be locked, the worm 20 is rotated, the worm wheel 21 matched with the worm 20 synchronously rotates, and then the screw rod 22 is driven to linearly move, and the inner core is fixedly connected with the second connecting piece 2, so that the second connecting piece 2 is locked. When the second connecting piece 2 needs to be unlocked, the worm 20 is reversely rotated, and the inner core is retracted into the outer shell 10, so that the second connecting piece 2 is unlocked.
In all three embodiments of the present invention, the movable limiting device 3 may be configured to unlock the second connecting member 2 and lock the second connecting member 2 by means of rotation unlocking. Whichever of the above embodiments has more or less structural complexity, or is prone to failure in use. As an improvement of the present invention, as shown in fig. 2 to 6, the present invention also provides the following improvement scheme:
In the present invention, the housing 10 includes a side chamber and a communication hole 12; the side chamber is located on a side wall of the housing 10, and the communication hole 12 communicates with the side chamber. The inner core comprises a mandrel 8 and a sliding block 9; the sliding block 9 is in sliding fit with the side cavity, and the sliding block 9 is provided with a containing cavity 17; the periphery of the mandrel 8 is provided with a protruding part 15 and a matching part 16, the mandrel 8 is inserted in the communication hole 12 and the accommodating cavity 17, the matching part 16 is rotatably connected with the communication hole 12, the mandrel 8 and the sliding block 9 can be arranged in a relatively rotatable manner, and the mandrel 8 can be realized through the clamping spring 11 when being axially fixed; the protruding part 15 is contacted with the inner wall of the accommodating cavity 17, and the outline of the accommodating cavity 17 is larger than the outline of the protruding part 15, so that the sliding block 9 can be shifted to slide. When the second connecting piece 2 is in a locking state, the sliding block 9 is propped against the second connecting piece 2 (grooves can be formed on the second connecting piece 2 or concave-convex lines can be formed on the second connecting piece 2) so as to lock the relative positions of the second connecting piece 2 and the first connecting piece 1. When the second connecting piece 2 needs to be unlocked, the mandrel 8 is rotated, the protruding portion 15 of the mandrel 8 presses the surface of the accommodating cavity 17, and the sliding block 9 is driven to be withdrawn into the side cavity and the communication hole 12 from the surface of the second connecting piece 2, so that the second connecting piece 2 is unlocked. When the second connecting piece 2 is unlocked or locked, the sliding block 9 can slide relatively in a mode that the protruding part 15 is matched with the inner wall of the accommodating cavity 17, precise matching is not needed, and the sliding block can adapt to various severe use environments and has long service life.
Further, in order to accurately determine the sliding posture of the sliding block 9, in the invention, the sliding block 9 is provided with the guide groove, the shell 10 is provided with the guide strip 13, and the guide groove is in sliding fit with the guide strip 13, so that the sliding of the sliding block 9 can be guided, the sliding posture of the sliding block 9 is accurately determined, and the sliding block 9 is prevented from being invalid.
Further, in order to facilitate the resetting of the slider 9 (here, the slider 9 automatically locks the second connector 2 after the second connector 2 rotates to a predetermined locking angle matched with the slider 9), in the present invention, an elastic strip which can be elastically deformed and is always in a pressed state is provided between the slider 9 and the housing 10 in the sliding direction of the slider 9, so that the resetting power can be provided for the slider 9. The elastic strip can be any one of a rubber strip, a compression spring and a plate spring, preferably the compression spring, and can have larger stroke, larger elasticity and longer service life.
Further, in order to facilitate the relative rotation of the first connecting piece 1 and the second connecting piece 2, in the invention, an avoidance groove and connecting arms positioned at two sides of the avoidance groove are arranged on the first connecting piece 1, the two connecting arms and one avoidance groove form a U shape, and the two connecting arms are connected at the outer side of the shell 10 and fixedly connected with the shell 10; the second connecting piece 2 is articulated with the shell 10 in dodging the inslot, dodges the rotation that the groove can be for the second connecting piece 2 and provide the space to, the linking arm keeps off at the both ends of shell 10, can avoid second connecting piece 2 to break away from with shell 10, and then can improve joint strength.
Preferably, the connecting arm is fixedly connected with the housing 10 by means of a snap connection, so that the housing 10 and the connecting arm can be prevented from rotating relatively. Specifically, the connecting arm is provided with a connecting hole, and the connecting hole is sleeved at two ends of the outer side of the shell 10 and is connected with two ends of the shell 10 in a clamping (interference fit) manner. Be equipped with anti-rotation fixture block on the connecting hole, the both ends of shell 10 are equipped with jack catch 14, and anti-rotation fixture block and jack catch 14 joint are connected, and jack catch 14 installs between two adjacent anti-rotation fixture blocks, can avoid shell 10 and linking arm to take place relative rotation.
Further, in order to construct a good working environment of the movable limiting device 3, in the present invention, the connection hole includes a first hole and a second hole, and the number of anti-rotation clamping blocks on the first hole is smaller than that on the second hole. The number of the anti-rotation clamping blocks on the first hole is the same as the number of the clamping claws 14 on one end of the shell 10 matched with the anti-rotation clamping blocks, the clamping claws 14 are clamped between two adjacent anti-rotation clamping blocks in a one-to-one correspondence mode, and the anti-rotation clamping blocks and the clamping claws 14 form approximately meshed distribution. Be equipped with the sealing member on the second hole, the anti-rotation fixture block that the second hole is more than first hole can be connected with sealing member joint, prevents that the sealing member from droing.
Further, in order to improve the locking strength of the second connecting piece 2 in the locking state, in the invention, a socket hole is arranged on the second connecting piece 2, and a clamping groove is arranged on the side wall of the socket hole; the shell 10 is located the bell and spigot joint hole, with the rotatable connection of bell and spigot joint hole, the draw-in groove can be connected with the slider 9 joint of inner core to strengthen the joint intensity of second connecting piece 2 and slider 9.
Further, in order to improve the convenience of the present invention in use, the present invention further includes a reset device 7, where the reset device 7 is mounted on the mandrel 8 of the inner core and connected to the outer shell 10, and is capable of driving the inner core to reset when the inner core is displaced (here, when the second connecting piece 2 rotates to a predetermined locking angle matched with the sliding piece 9, the sliding piece 9 automatically locks the second connecting piece 2), so that the present invention is convenient for a user to use. In particular, the resetting device 7 may be any one or a combination of torsion springs, tension springs, compression springs and rubber strips, preferably torsion springs, which occupy a small space and can provide torsion moment.
Further, for convenience of operation, the invention further comprises a knob, wherein the knob is connected with one end of the inner core (one end of the inner core is provided with the reset device 7), so that the position of the inner core can be provided for a user to rotate, and manual operation is facilitated.
Further, in the present invention, the knob includes a connector 6 and a jacket 5; the connecting body 6 is fixedly connected with one end of the inner core, the connecting body 6 can be in the shape of a cylinder, a cuboid, a polygon and the like, and the outer sleeve 5 is coated on the side wall of the connecting body 6. The outer sleeve 5 can be made of any one of plastic, rubber and thermoplastic elastomer materials, has certain elasticity and prevents hands from being pressed during use. To prevent the user from slipping when twisting the knob, the side walls of the sleeve 5 are provided with cleats and/or anti-slip recesses.
Furthermore, in the invention, the knob also comprises a sealing buckle 4, wherein the sealing buckle 4 is positioned at one end of the connecting body 6 far away from the inner core and is connected with the connecting body 6 in a clamping way, so that the two ends of the movable limiting device 3 can be protected by matching with a sealing piece.
Further, as a protection measure, in the invention, the first connecting piece 1 is provided with the limiting bulge, the knob is provided with the limiting notch, and the limiting bulge is matched with the limiting notch, so that the rotation range of the movable limiting device 3 can be limited, and further the movable limiting device 3 is prevented from being damaged due to overlarge torsion angle.
As shown in fig. 1 to 6, the working process of the present invention will be described in detail as follows:
When the rotatable and lockable movable joint is applied to a baby carriage, the rotatable and lockable movable joint is arranged at the movable joint of the carriage frame, can realize the rotary folding of the carriage frame, and can play a role in locking when the carriage frame is unfolded. When the baby carriage needs to be stored, the knob is rotated, the mandrel 8 toggles the sliding block 9 to slide out of the clamping groove of the second connecting piece 2, and at the moment, the second connecting piece 2 is slightly rotated by a certain angle (such as 5 degrees) under the action of gravity or manually toggled, so that the knob can be loosened, and the second connecting piece 2 can be freely rotated to store the baby carriage.
At the moment when the user releases the knob, the knob returns to the initial position (state when not rotated) by the return means 7 (torsion spring).
When the second connecting piece 2 is not in the open state, the elastic strip connected with the sliding block 9 is always in the pressed state. When the second connecting piece 2 moves to the opening position (the sliding block 9 is opposite to the clamping groove), the sliding block 9 is stressed to automatically enter the clamping groove, so that the second connecting piece 2 is locked.
When the knob is rotated, as the knob is provided with the limiting notch and the first connecting piece 1 is provided with the limiting bulge, the limiting bulge can only swing in the range of the limiting notch, and then the maximum angle when the knob is rotated can be limited, and the movable limiting device 3 is protected.
It will be appreciated by those skilled in the art that the present invention can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the invention or equivalents thereto are intended to be embraced therein.
Claims (10)
1. A rotatable and lockable articulation joint for use with a stroller comprising a first connector and a second connector, wherein:
The movable limiting device is connected between the first connecting piece and the second connecting piece, and the movable limiting device generates radial displacement when rotating so as to realize the rotation and locking of the second connecting piece;
the movable limiting device comprises a shell and an inner core; the shell is fixedly connected with the first connecting piece and rotatably connected with the second connecting piece; the inner core is positioned in the outer shell and protrudes out of the outer shell, and the inner core is used for radial displacement to rotate or lock the second connecting piece when rotating;
The housing includes a side chamber and a communication hole; the side chamber is positioned on the side wall of the shell, and the communication hole is communicated with the side chamber;
The inner core comprises a mandrel and a sliding block; the sliding block is in sliding fit with the side cavity, and an accommodating cavity is formed in the sliding block; the periphery of the mandrel is provided with a protruding portion and a matching portion, the mandrel is inserted into the communication hole and the accommodating cavity, the matching portion is rotatably connected with the communication hole, the protruding portion is in contact with the inner wall of the accommodating cavity, and the outline of the accommodating cavity is larger than that of the protruding portion.
2. The rotatable and lockable articulation joint of claim 1, wherein:
the sliding block is provided with a guide groove, the shell is provided with a guide bar, and the guide groove is in sliding fit with the guide bar;
An elastic strip which can be elastically deformed and is always in a pressed state is arranged between the sliding block and the shell in the sliding direction of the sliding block;
the elastic strip is any one of a rubber strip, a compression spring and a plate spring.
3. The rotatable and lockable articulation joint of claim 1, wherein:
the first connecting piece is provided with an avoidance groove and connecting arms positioned at two sides of the avoidance groove;
the avoidance groove is used for providing space for the rotation of the second connecting piece;
The connecting arm is used for connecting the shell, a connecting hole is formed in the connecting arm, and the connecting hole is connected with two ends of the shell in a clamping mode.
4. A rotatable and lockable articulation joint according to claim 3, characterized in that:
The anti-rotation clamping blocks are arranged on the connecting holes, clamping claws are arranged at two ends of the shell, and the anti-rotation clamping blocks are connected with the clamping claws in a clamping mode.
5. The rotatable and lockable articulation joint of claim 4, wherein:
The connecting holes comprise first holes and second holes, and the number of the anti-rotation clamping blocks on the first holes is smaller than that of the anti-rotation clamping blocks on the second holes;
A sealing element is arranged on the second hole;
The sealing element is connected with the second hole in a clamping way.
6. The rotatable and lockable articulation joint of claim 1, wherein:
The second connecting piece is provided with a sleeving hole, and the side wall of the sleeving hole is provided with a clamping groove;
The shell is located in the sleeve hole and rotatably connected with the sleeve hole, and the clamping groove is used for being connected with the inner core in a clamping mode.
7. The rotatable and lockable articulation joint of claim 1, wherein:
the reset device is arranged on the inner core, connected with the shell and used for driving the inner core to reset when the inner core is displaced;
the reset device is any one or combination of a torsion spring, an extension spring, a compression spring and a rubber strip.
8. The rotatable and lockable articulation joint of claim 7, wherein:
The rotary knob is connected with one end of the inner core and is used for providing a position for rotating the inner core;
The knob comprises a connecting body and a jacket; the connecting body is fixedly connected with one end of the inner core, and the outer sleeve is positioned on the side wall of the connecting body.
9. The rotatable and lockable articulation joint of claim 8, wherein:
The knob also comprises a sealing buckle, and the sealing buckle is positioned at one end of the connecting body, which is far away from the inner core, and is connected with the connecting body in a clamping way;
The side wall of the outer sleeve is provided with an anti-slip protrusion and/or an anti-slip recess, and the outer sleeve is made of any one of plastic, rubber and thermoplastic elastomer materials.
10. The rotatable and lockable articulation joint of claim 9, wherein:
The first connecting piece is provided with a limiting bulge, the knob is provided with a limiting notch, and the limiting bulge is matched with the limiting notch and used for limiting the rotation range of the movable limiting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010962357.3A CN111907580B (en) | 2020-09-14 | 2020-09-14 | Rotatable and lockable articulation joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010962357.3A CN111907580B (en) | 2020-09-14 | 2020-09-14 | Rotatable and lockable articulation joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111907580A CN111907580A (en) | 2020-11-10 |
| CN111907580B true CN111907580B (en) | 2024-08-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202010962357.3A Active CN111907580B (en) | 2020-09-14 | 2020-09-14 | Rotatable and lockable articulation joint |
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| CN116038599A (en) * | 2023-02-07 | 2023-05-02 | 上海导向医疗系统有限公司 | Rotary device |
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| CN212267608U (en) * | 2020-09-14 | 2021-01-01 | 北京宝贝的旅程科技有限公司 | Rotatable and lockable movable joint |
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| FR2267467B1 (en) * | 1974-04-11 | 1976-12-17 | Telemecanique Electrique | |
| FR2924474A1 (en) * | 2007-11-29 | 2009-06-05 | Promiles Snc | FOLDING / LOCKING SYSTEM FOR TROTTINETTE |
| CN202187617U (en) * | 2011-08-09 | 2012-04-11 | 温州市派克箱包有限公司 | Luggage combination lock |
| CN107284507B (en) * | 2016-04-13 | 2022-05-31 | 明门香港股份有限公司 | Frame folding joint and baby carriage with same |
| DE102017100974B4 (en) * | 2017-01-19 | 2020-12-31 | Emmaljunga Barnvagnsfabrik Ab | Frame of a stroller |
| CN206900454U (en) * | 2017-04-13 | 2018-01-19 | 昆山爱特宝儿童用品科技有限公司 | The automobile-used rotary handle locking joint of folding children's |
| CN209183948U (en) * | 2018-11-20 | 2019-07-30 | 珠海优特电力科技股份有限公司 | Pressing plate blocking device |
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