CN206202393U - A kind of locking mechanism and children trolley - Google Patents

Abstract

The utility model discloses a locking mechanism and a stroller for children, wherein the locking mechanism comprises a first part and a second part which are rotatably connected, a main locking mechanism which locks the positions of the first part and the second part, and drives the main The first unlocking mechanism for unlocking the locking mechanism, the secondary lock locking mechanism that locks the position of the first unlocking mechanism so that the main locking mechanism cannot be unlocked, and the second unlocking mechanism that drives the secondary lock locking mechanism to unlock; the primary locking mechanism includes a primary locking member , the first unlocking mechanism includes a fixed seat, an unlocking handle movably arranged on the fixing seat, and a drive assembly that cooperates with the unlocking handle and the main locking piece respectively. The secondary lock locking mechanism includes a secondary lock locking piece. When the cooperation between the piece and the unlocking handle is disengaged, operating the unlocking handle can drive the main locking mechanism to unlock. The locking mechanism can lock the two parts that rotate relatively. Since the locking mechanism has a secondary locking function, the locking mechanism is safe and reliable in the locked state.

Description

A locking mechanism and a stroller for children

technical field

The utility model relates to the technical field of children's products, in particular to a locking mechanism and a children's stroller.

Background technique

The children's stroller includes a stroller frame with unfolded and folded states, and a locking mechanism for locking the stroller frame in the unfolded state. The locking mechanism in the prior art generally has only one lock. The locking mechanism of this structure is During the use of the stroller, it is easy to misoperate to unlock the locking mechanism, so that the frame of the stroller is folded, causing a safety accident.

Contents of the invention

The purpose of the utility model is to provide a locking mechanism with a secondary locking function for the deficiencies of the prior art.

For achieving the above object, the technical scheme that the utility model adopts is:

A locking mechanism, comprising a first component and a second component whose ends are rotatably connected, the locking mechanism further comprising a main locking mechanism for locking the relative positions of the first component and the second component, A first unlocking mechanism for driving the main locking mechanism to unlock, a secondary lock mechanism for locking the position of the first unlocking mechanism so that the main locking mechanism cannot be unlocked, and a secondary lock mechanism for driving the secondary lock a second unlocking mechanism for unlocking;

The main locking mechanism includes a main locking piece slidably arranged between the first part and the second part. When the main locking mechanism is in a locked state, the main locking piece is respectively connected to the second A part cooperates with the second part so that the first part and the second part cannot rotate relative to each other, and when the main locking mechanism is in an unlocked state, the main locking part is in contact with the first part Cooperate, disengage from the second part, the second part can rotate relative to the first part;

The first unlocking mechanism includes a fixed seat arranged on the second part, an unlocking handle movably arranged on the fixed seat, and a driving assembly respectively matched with the unlocking handle and the main locking member. When the unlocking handle is operated, the driving assembly is used to drive the main locking member to slide between the first part and the second part until it is disengaged from the second part;

The secondary lock mechanism includes a secondary lock piece that can be slidably arranged on the fixed seat. When the secondary lock mechanism is in the locked state, the secondary lock piece and the unlocking handle Cooperate so that the unlocking handle is fixed on the fixed seat, and the main locking mechanism cannot be unlocked. When the secondary lock locking mechanism is in the unlocked state, there is a gap between the locking part of the secondary lock and the unlocking handle. When disengaged, the unlocking handle can move relative to the fixed seat to drive the main locking mechanism to unlock.

Preferably, the driving assembly includes a pull rod that is rotatably connected with the unlocking handle and slidably arranged on the fixing seat, a first driving member that cooperates with the pull rod, and that is connected with the first driving member respectively. A second driving part that cooperates with the main locking part, the first driving part is rotatably arranged on the second part, and the second driving part is slidably arranged on the second part , when the unlocking handle is pulled, the pull rod is driven to slide on the fixed seat, and the cooperation between the pull rod and the first drive part is used to drive the first drive part to rotate relative to the second part. The cooperation between the first driving part and the second driving part drives the second driving part to slide on the second part, and the cooperation between the second driving part and the main locking part drives the main locking part. The lock slides until disengaged from said second part.

Further, the first drive part is rotatably connected to the second part through a first shaft, and the first drive part is respectively provided with a first matching part matching with the pull rod and a first fitting part matching with the second part. The second matching portion of the driving member is matched, and the first matching portion and the second matching portion are respectively located on two sides of the first shaft.

Further, the sliding directions of the main locking part and the secondary locking part are both perpendicular to the sliding direction of the pull rod.

Further, the locking mechanism also includes a first reset element for driving the pull rod to reset, a second reset element for driving the second drive member to reset, the first reset element is arranged between the pull rod and the Between the fixing seats, the second reset element is arranged between the second component and the second driving member.

Preferably, the second unlocking mechanism includes an unlocking button slidably arranged on the fixing seat, and the unlocking button cooperates with the locking part of the secondary lock. When the unlocking button is pushed, the The locking part of the secondary lock slides until it is disengaged from the unlocking handle.

Preferably, the main locking member is provided with a ratchet, and both the first part and the second part are provided with tooth grooves that cooperate with the ratchet. When the main locking mechanism is in the locked state , the ratchets on the main locking part cooperate with the tooth grooves on the first part and the second part respectively, when the main locking mechanism is in the unlocked state, the ratchets on the main locking part It is disengaged from the cogging on the second part and cooperates with the cogging on the first part.

Preferably, the main locking mechanism further includes a third reset element arranged between the main locking member and the first component for driving the main locking member to reset from the unlocked state to the locked state.

Preferably, the dual lock mechanism further includes a fourth reset element disposed between the dual lock member and the fixing seat for driving the dual lock member to reset from the unlocked state to the locked state .

The utility model also discloses a stroller for children, which has the locking mechanism described in any one of the above items.

Due to the application of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art: the locking mechanism of the utility model has a simple structure, and can lock the two parts that rotate relatively. Since the locking mechanism has a secondary locking function, The locking mechanism is safe and reliable in the locked state.

Description of drawings

Accompanying drawing 1 is the three-dimensional view of the children's stroller of the present invention in the unfolded state (the part of the shell of the crossbeam is removed from the locking mechanism, and the main locking mechanism is in the locked state);

Accompanying drawing 2 is the enlarged view of place A in accompanying drawing 1;

Accompanying drawing 3 is a schematic diagram of the structure at A in the accompanying drawing 1 (enlarged front view);

Accompanying drawing 4 is the side view of the children's stroller of the utility model in the unfolded state (remove the upper structure of the children's stroller, the locking mechanism is a schematic diagram of the internal structure, and the secondary lock locking mechanism is in the locked state);

Accompanying drawing 5 is the enlarged view of place A in accompanying drawing 4;

Accompanying drawing 6 is the structural schematic view before the second unlocking mechanism of the present invention unlocks the secondary lock locking mechanism;

Accompanying drawing 7 is the structure schematic diagram after the second unlocking button of the utility model unlocks the locking mechanism of the secondary lock;

Accompanying drawing 8 is the structural diagram when the first unlocking mechanism of the present invention unlocks the main locking mechanism;

Accompanying drawing 9 is the three-dimensional view of the children's stroller of the present invention in a folded state.

Among them: 1. The first part; 2. The second part; 31. The main locking part; 32. The third reset element; 41. The unlocking handle; 42. The pull rod; 43. The first driving part; 44. The second driving part; 45. The first shaft; 46. The second shaft; 47. The first reset element; 48. The second reset element; .

detailed description

The technical solution of the present utility model will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 5 and 9, the locking mechanism of the present invention includes a first part 1 and a second part 2 that are rotatably connected, and are used to lock the relative positions of the first part 1 and the second part 2. The main locking mechanism, the first unlocking mechanism for driving the main locking mechanism to unlock, the secondary lock locking mechanism that locks the position of the first unlocking mechanism so that the main locking mechanism cannot be unlocked, and the secondary lock locking mechanism for driving the secondary lock mechanism to unlock Second unlocking mechanism.

The main locking mechanism is arranged between the first part 1 and the second part 2. When the main locking mechanism is in the locked state, the first part 1 and the second part 2 are relatively fixed and cannot rotate. When the main locking mechanism is in the unlocked state , relative rotation between the first part 1 and the second part 2 is possible. Specifically, as shown in Figures 1 to 3, the main locking mechanism includes a main locking member 31 slidably arranged between the first part 1 and the second part 2. When the main locking mechanism is in the locked state, the main locking part 31 Cooperate with the first part 1 and the second part 2 respectively. When the main locking mechanism is in the unlocked state, the main locking part 31 cooperates with the first part 1 and disengages with the second part 2 .

The main locking part 31 cooperates with the first part 1 and the second part 2 in the following manner: the main locking part 31 is provided with a ratchet, and the first part 1 and the second part 2 are respectively provided with ratchets to cooperate with the ratchet. When the main locking mechanism is in the locked state, the ratchet teeth on the main locking member 31 are respectively matched with the tooth grooves on the first part 1 and the second part 2. When the main locking mechanism is in the unlocked state, the main locking member 31 The ratchet on the upper part cooperates with the tooth groove on the first part 1 and disengages from the tooth groove on the second part 2.

The main locking mechanism further includes a third reset element 32 for driving the main locking member 31 to reset from the unlocked state to the locked state, and the third reset element 32 is disposed between the main locking member 31 and the first component 1 . In this embodiment, the third reset element 32 adopts a compression spring, and the two ends of the compression spring are fixedly connected to the main locking member 31 and the first component 1 respectively. During the unlocking process of the main locking mechanism, the compression spring is compressed. When the second When the active force on the unlocking mechanism disappears, the main locking member 31 gradually slides in the direction of matching with the second part 2 under the action of the elastic force of the compression spring until it is in the same position as the first part 1 and the second part 2 respectively. The state of cooperation.

As shown in Figures 1 to 8, the first unlocking mechanism includes an unlocking handle 41, a driving assembly that cooperates with the unlocking handle 41 and the main locking member 31, and a fixing seat 5 is provided on the second part 2, and the fixing seat 5 and The second part 2 can be fixedly connected together, and can also be connected by rotation. The unlocking handle 41 is movably arranged on the fixed seat 5. When the unlocking handle 41 is operated, the main locking part 31 is driven to slide through the driving assembly until it is disengaged from the second part 2. Cooperate, the main locking mechanism is just in unlocked state. Specifically, the drive assembly includes a pull rod 42, a first drive member 43 and a second drive member 44, the pull rod 42 is slidably arranged on the fixed base 5, and the unlocking handle 41 is rotationally connected with one end of the pull rod 42 through a second shaft 46. , the first driving member 43 is rotationally connected with the second component 2 through the first shaft 45, and the first driving member 43 is provided with a first matching portion matched with the other end of the pull rod 42 and a second driving member 44. The second matching part with one end matched, the first matching part is against the other end of the pull rod 42, the second matching part is against one end of the second driving member 44, the first matching part and the second matching part are respectively located at the second On both sides of the first shaft 45 , the second driving member 44 is slidably disposed on the second component 2 , and the other end of the second driving member 44 cooperates with the main locking member 31 . When the unlocking handle 41 rotates around the second axis 46 until its center plane coincides with the center plane of the pull rod 42, the unlock handle 41 is pulled to drive the pull rod 42 to slide on the fixing seat 5, and the cooperation between the pull rod 42 and the first matching part drives the second A drive member 43 rotates around the first shaft 45. When the first drive member 43 rotates, the second drive member 44 is driven to slide on the second component 2 through the cooperation of the second matching part and the second drive member 44. 44 cooperates with the main locking part 31 to drive the main locking part 31 to follow the second driving part 44 to slide on the second part 2 until the main locking part 31 disengages from the second part 2 and completely enters the first part 1 , the main locking mechanism is unlocked.

The locking mechanism of the present utility model also includes a first reset element 47 for driving the pull rod 42 to reset, a second reset element 48 for driving the second driver 44 to reset, and the first reset element 47 is arranged on the pull rod 42 and the fixing seat 5 Among them, the second reset element 48 is arranged between the second component 2 and the second driving member 44, the first reset element 47 adopts a compression spring, and its two ends are fixedly connected to the pull rod 42 and the fixing seat 5 respectively, and the second The reset element 48 also adopts a compression spring, and its two ends are fixedly connected to the second part 2 and the second driver 44 respectively. In the process of operating the unlocking handle 41 to unlock the main locking mechanism, the first reset element 47 and the second The reset elements 48 are all compressed, and when the unlocking handle 41 is released, the pull rod 42 and the second drive member 44 are driven to reset under the action of the elastic force of the first reset member 47 and the second reset member 48, thereby driving the first drive member 43 reset.

When the secondary lock locking mechanism is in the locked state, the unlocking handle 41 is fixed in position on the fixed seat 5 and cannot be moved, so that the main locking mechanism cannot be unlocked. When the secondary lock locking mechanism is in the unlocked state, the unlocking handle 41 can be fixed on the Turn and slide on seat 5 to unlock the main locking mechanism.

Specifically, as shown in Fig. 4 and Fig. 5, the secondary lock locking mechanism includes a secondary lock locking member 61 that can be slidably arranged on the fixed seat 5. When the secondary lock locking mechanism is in the locked state, the secondary lock locks Part 61 cooperates with unlocking handle 41, so that unlocking handle 41 is fixedly arranged on the fixed seat 5. When the secondary lock locking mechanism is in the unlocked state, the secondary lock locking part 61 is disengaged from the unlocking handle 41, and the unlocking handle 41 is just It can be rotated and slid relative to the fixed seat 5 to unlock the main locking mechanism.

The locking mechanism of the double lock also includes a fourth reset element 62 for driving the locking piece 61 of the double lock to reset from the unlocked state to the locked state. The fourth reset element 62 is arranged between the locking piece 61 of the double lock and the fixing seat 5 . In this embodiment, the fourth resetting element 62 adopts a compression spring, and the two ends of the compression spring are respectively fixedly connected to the main locking part 61 of the secondary lock and the fixing seat 5 . During the unlocking process of the secondary lock locking mechanism, the stage clip is compressed, and when the force of the second unlocking mechanism acting on the secondary lock locking member 61 disappears, the secondary lock locking member 61 gradually moves toward the secondary lock under the elastic force of the secondary lock. Sliding in the direction matching with the unlocking handle 41 until it is in a state of matching with the unlocking handle 41 again.

The second unlocking mechanism includes an unlocking button 7 that can be slidably arranged on the fixed seat 5, and the unlocking button 7 cooperates with the secondary lock lock member 61. From the state shown in Figure 6 to the state shown in Figure 7, drive the secondary lock locking part 61 to slide synchronously on the fixed seat 5 until the secondary lock locking part 61 is disengaged from the unlocking handle 41, and the secondary lock locking mechanism is in the unlocked state up.

In this embodiment, the sliding directions of the main locking member 31 and the secondary locking member 61 are both perpendicular to the sliding direction of the pull rod 42 .

The locking mechanism of the present utility model can be arranged between the two parts that are rotatably connected on the cart frame of the children's stroller, and can also be arranged between the two parts that are rotatably connected on other products. For example, the stroller frame of a children's stroller generally includes a front bracket for installing the front wheel assembly and a rear bracket for installing the rear wheel assembly, and the upper ends of the front bracket and the rear bracket are rotatably connected. The mechanism can be arranged between the front bracket and the rear bracket. At this time, the front bracket is the first part 1 of the locking mechanism, and the rear bracket is the second part 2 of the locking mechanism.

The front brackets in this embodiment are respectively arranged on the left and right sides of the stroller, and the rear brackets include rear struts 21 respectively located on the left and right sides of the stroller and horizontal connections between the rear struts 21 connected to the left and right sides. Rod 22, the fixed seat 5 is arranged on the horizontal connecting rod 22, the first driving member 43 is rotationally connected with the horizontal connecting rod 22 through the first shaft 45, the second driving member 44 is slidably arranged on the horizontal connecting rod 22, the main The locking mechanisms are respectively arranged between the front bracket and the rear pole 21 on the left and right sides, and the first driving member 43 and the second driving member 44 are symmetrically arranged on the left and right sides of the stroller.

The stroller has unfolded and folded states. When the stroller is in the unfolded state, both the main locking mechanism and the secondary lock mechanism are in the locked state, so that the stroller is in a stable unfolded state, which prevents the stroller from being During use, the main locking mechanism is unlocked due to misoperation, resulting in a safety accident.

When the stroller needs to be unlocked, first unlock the secondary lock locking mechanism. When the secondary lock locking mechanism is unlocked, toggle the unlock button 7 to slide from the state shown in FIG. 6 to the state shown in FIG. 7 on the fixed seat 5, Drive the secondary lock locking part 61 to slide on the fixed seat 5 and disengage the cooperation with the unlocking handle, and now the secondary lock locking mechanism is unlocked; then pull the unlocking handle 41 to rotate around the second axis 46 to the state of Figure 8, Lift the unlocking handle 41 upwards, drive the pull rod 42 to slide upwards, drive the first driving parts 43 on both sides to rotate around the first axis 45 respectively, drive the second driving parts 44 on both sides to slide along the K direction, and drive the main locks on both sides The parts 31 also slide along the K direction respectively until they are disengaged from the second part 2 and fully enter the first part 1, the main locking mechanism is unlocked. After the main locking mechanism is unlocked, the front bracket and the rear bracket can be relatively rotated and moved closer together. The baby stroller is foldable, as shown in FIG. 9 .

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it accordingly, and not to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (10)

1. A locking mechanism, comprising a first part and a second part whose ends are rotatably connected, characterized in that: the locking mechanism also includes a function for matching the relative positions of the first part and the second part A locked main locking mechanism, a first unlocking mechanism for driving the main locking mechanism to unlock, a secondary lock locking mechanism for locking the position of the first unlocking mechanism so that the main locking mechanism cannot be unlocked, and a second lock mechanism for driving all The second unlocking mechanism for unlocking the secondary lock locking mechanism; The main locking mechanism includes a main locking piece slidably arranged between the first part and the second part. When the main locking mechanism is in a locked state, the main locking piece is respectively connected to the second A part cooperates with the second part so that the first part and the second part cannot rotate relative to each other, and when the main locking mechanism is in an unlocked state, the main locking part is in contact with the first part Cooperate, disengage from the second part, the second part can rotate relative to the first part; The first unlocking mechanism includes a fixed seat arranged on the second part, an unlocking handle movably arranged on the fixed seat, and a driving assembly respectively matched with the unlocking handle and the main locking member. When the unlocking handle is operated, the driving assembly is used to drive the main locking member to slide between the first part and the second part until it is disengaged from the second part; The secondary lock mechanism includes a secondary lock piece that can be slidably arranged on the fixed seat. When the secondary lock mechanism is in the locked state, the secondary lock piece and the unlocking handle Cooperate so that the unlocking handle is fixed on the fixed seat, and the main locking mechanism cannot be unlocked. When the secondary lock locking mechanism is in the unlocked state, there is a gap between the locking part of the secondary lock and the unlocking handle. When disengaged, the unlocking handle can move relative to the fixed seat to drive the main locking mechanism to unlock. 2. The locking mechanism according to claim 1, characterized in that: the driving assembly includes a pull rod that is rotatably connected with the unlocking handle and slidably arranged on the fixing seat, and is matched with the pull rod The first driving part, the second driving part matched with the first driving part and the main locking part respectively, the first driving part is rotatably arranged on the second part, the second The driving part is slidably arranged on the second part, and when the unlocking handle is pulled, the pull rod is driven to slide on the fixed seat, and the cooperation between the pull rod and the first driving part drives the The first driving part rotates relative to the second part, the cooperation between the first driving part and the second driving part drives the second driving part to slide on the second part, and the second driving part The engagement of the main locking member with the primary locking member drives the primary locking member to slide until disengaged from the second part. 3. The locking mechanism according to claim 2, characterized in that: the first driving member is rotatably connected to the second member through a first shaft, and the first driving member is respectively provided with a A first matching portion that matches and a second matching portion that cooperates with the second driving member, the first matching portion and the second matching portion are respectively located on two sides of the first shaft. 4. The locking mechanism according to claim 2, wherein the sliding directions of the main locking member and the secondary locking member are both perpendicular to the sliding direction of the pull rod. 5. The locking mechanism according to claim 2, characterized in that: the locking mechanism further comprises a first reset element for driving the pull rod to reset, and a second reset element for driving the second driving member to reset , the first reset element is arranged between the pull rod and the fixing seat, and the second reset element is arranged between the second component and the second driving member. 6. The locking mechanism according to claim 1, characterized in that: the second unlocking mechanism includes an unlocking button slidably arranged on the fixing seat, the unlocking button is connected to the locking member of the secondary lock When the unlocking button is pushed, the locking part of the secondary lock is driven to slide until it is disengaged from the unlocking handle. 7. The locking mechanism according to claim 1, wherein a ratchet is provided on the main locking member, and ratchets that cooperate with the ratchet are provided on the first part and the second part. Tooth slots, when the main locking mechanism is in the locked state, the ratchet teeth on the main locking piece are matched with the tooth slots on the first part and the second part respectively, when the main locking mechanism is in the In the unlocked state, the ratchet teeth on the main locking part are disengaged from the tooth grooves on the second component, and cooperate with the tooth grooves on the first component. 8. The locking mechanism according to claim 1, characterized in that: the main locking mechanism further includes a locking mechanism arranged between the main locking member and the first component for driving the main locking member from the unlocked state to the The third reset element for the reset of the locked state. 9. The locking mechanism according to claim 1, characterized in that: the secondary lock mechanism further includes a locking element arranged between the secondary lock member and the fixing seat for driving the secondary lock to lock. A fourth reset element for resetting the component from the unlocked state to the locked state. 10. A stroller for children, characterized in that it has the locking mechanism according to any one of claims 1-9.