Child carrier reliable in folding and unfolding locking

Abstract

The utility model discloses a child carrier reliable in folding and unfolding locking, which is characterized in that an unfolding locking mechanism and a folding locking mechanism are independently arranged, and an unfolding unlocking mechanism and a folding unlocking mechanism are independently arranged; the locking and unlocking actions in the unfolded state and the locking and unlocking actions in the folded state do not interfere with each other, so that the supporting assembly is better correspondingly locked in the unfolded state or the folded state, and it is ensured that locking is safe and reliable.

Description

[Technical field]

[0001] The utility model relates to the field of children's safety travel products, in particular to a children's carrier which can be reliably folded and unfolded and locked. [Background technology]

[0002] The present applicant submitted an application number of 202222908888.1 on November 2, 2022 for a children's carrier, in which the first locking mechanism and the second locking mechanism are both unlocked by a first unlocking member, that is, the folding unlocking and the unfolding unlocking are achieved by a handle unlocking action, and the locking mechanisms are both between the sliding groove and the sliding joint; in actual operation, the present applicant found that the unfolding unlocking action has a continuous holding characteristic, and this holding action characteristic makes it impossible for the unfolded frame to complete the locked state, resulting in poor reliability and safety hazards.

[0003] For this reason, the present invention is studied and proposed in view of the above-mentioned problems. [Contents of the utility model]

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a child carrier with reliable locking when folded and unfolded. By independently arranging the unfolding locking mechanism and the folding locking mechanism, and independently arranging the unfolding unlocking mechanism and the folding unlocking mechanism, the locking and unlocking actions in the unfolded state and the locking and unlocking actions in the folded state can be made not to interfere with each other, so as to better lock the support assembly in the unfolded state or the folded state accordingly, and ensure safe and reliable locking.

[0005] The utility model is realized by the following technical solutions:

[0006] A child carrier that can be reliably locked when folded and unfolded, comprising:

[0007] Vehicle body 1;

[0008] A support assembly 2, the support assembly 2 is connected to the carrier body 1 and has an unfolded state and a folded state. The support assembly 2 switches between the unfolded state and the folded state so that the child carrier switches between a stroller use state and a car seat use state respectively. The child carrier is used as an infant stroller in the stroller use state, and the child carrier is used in connection with a car seat in the car seat use state;

[0009] An unfolding locking mechanism 3, the unfolding locking mechanism 3 is used to lock the support assembly 2 in the unfolded state;

[0010] An unfolding unlocking mechanism 4, the unfolding unlocking mechanism 4 is used to link the unfolding locking mechanism 3 with an unlocking action;

[0011] A folding locking mechanism 5, wherein the folding locking mechanism 5 is used to lock the support assembly 2 in the folded state, and the folding locking mechanism 5 and the unfolding locking mechanism 3 are independently arranged;

[0012] The folding and unlocking mechanism 6 is used to link the unlocking action of the folding and locking mechanism 5, and the folding and unlocking mechanism 6 and the unfolding and unlocking mechanism 4 are independently arranged.

[0013] As described above, the child carrier with reliable folding and unfolding locking, the unfolding locking mechanism 3 is used to lock the support assembly 2 in the unfolded state relative to the carrier body 1; the folding locking mechanism 5 is used to lock the support assembly 2 in the folded state relative to the carrier body 1.

[0014] As described above, the child carrier that can be reliably folded and unfolded and locked, the support assembly 2 comprises:

[0015] A front foot assembly 21, the upper end of which is rotatably connected to the front portion of the vehicle body 1;

[0016] A rear foot assembly 22, the upper end of which is movably connected to the rear portion of the vehicle body 1;

[0017] A connecting rod assembly 23, wherein the front end of the connecting rod assembly 23 is rotatably connected to the front foot assembly 21, and the rear end of the connecting rod assembly 23 is rotatably connected to the rear foot assembly 22;

[0018] The deployment locking mechanism 3 is located between the rear leg assembly 22 and the vehicle body 1 to lock the rear leg assembly 22 in the deployed state relative to the vehicle body 1;

[0019] The folding and locking mechanism 5 is located between the rear leg assembly 22 and the vehicle body 1 to lock the rear leg assembly 22 in a folded state relative to the vehicle body 1 .

[0020] As described above, for a child carrier that can be reliably folded and unfolded and locked, a slide slot assembly 11 is provided at the rear of the carrier body 1 , and the upper end of the rear leg assembly 22 is slidably connected to the slide slot assembly 11 .

[0021] As described above, in a child carrier that can be reliably locked when folded and unfolded, the front foot assembly 21 is configured such that during the switching process from the unfolded state to the folded state, the rear foot assembly 22 is driven to slide on the slide groove assembly 11 through the connecting rod assembly 23; or the rear foot assembly 22 is configured such that during the switching process from the unfolded state to the folded state, the front foot assembly 21 is driven to rotate accordingly relative to the carrier body 1 through the connecting rod assembly 23 so that the front foot assembly 21 is folded toward one side of the carrier body 1.

[0022] As described above, in a child carrier that can be reliably locked when folded and unfolded, the slide groove assembly 11 has a first slide groove 111 and a second slide groove 112, and the length direction of the first slide groove 111 is cross-arranged with the length direction of the second slide groove 112; the rear foot assembly 22 includes a rear joint seat 221 and a rear joint slider 222 arranged on the rear joint seat 221, and the rear joint seat 221 and the rear joint slider 222 are slidably connected to the first slide groove 111 and the second slide groove 112 respectively.

[0023] As described above, for a child carrier that can be reliably locked when folded and unfolded, the distance between the first slide groove 111 and the second slide groove 112 gradually increases in the direction away from the ground, so that the rear leg assembly 22 moves upward along the slide groove assembly 11 and swings forward at the same time.

[0024] As described above, a child carrier with reliable folding and unfolding locking, the unfolding locking mechanism 3 includes an unfolding locking portion 31 provided on the carrier body 1 and an unfolding locking member 32 axially slidably provided on the rear joint seat 221 of the rear leg assembly 22 and used for locking and cooperating with the unfolding locking portion 31 to lock the rear joint seat 221 relative to the carrier body 1, and an unfolding reset elastic member 33 for driving the unfolding locking member 32 to elastically reset is provided between the unfolding locking member 32 and the rear joint seat 221; the unfolding unlocking mechanism 4 is used for linking the unlocking action of the unfolding locking member 32.

[0025] As described above, the child carrier with reliable folding and unfolding locking, the unfolding and unlocking mechanism 4 comprises:

[0026] An unfolding unlocking member 41, wherein the unfolding unlocking member 41 is movably disposed on the carrier body 1;

[0027] An unfolding top block 43, which is axially slidably disposed on the carrier body 1 and has an unfolding inclined groove 431, and the unfolding top block 43 is in abutment with the unfolding locking member 32;

[0028] An unfolding pull block 42 , which is movably disposed on the carrier body 1 and connected to the unfolding unlocking member 41 via an unfolding unlocking pull rope, and is slidably connected to the unfolding top block 43 along the unfolding inclined slot 431 ;

[0029] The pulling block restoring member is located between the unfolding pulling block 42 and the carrier body 1 to drive the unfolding pulling block 42 to move and restore.

[0030] As described above, a child carrier with reliable folding and unfolding locking, the folding and locking mechanism 5 comprises a folding and locking block 51 provided on the rear leg assembly 22 and having a folding and locking hole 511, and a folding and locking socket 52 provided on the rear part of the carrier body 1 and used for inserting the folding and locking block 51, and the carrier body 1 is movably provided with a folding and locking pin 53 for inserting into the folding and locking hole 511 to prevent the folding and locking block 51 from separating from the folding and locking socket 52 when the folding and locking block 51 is inserted into the folding and locking socket 52, and a lock pin resetting elastic member for driving the folding and locking pin 53 to resiliently return to its original position is provided between the folding and locking pin 53 and the carrier body 1;

[0031] The folding and unlocking mechanism 6 includes a folding and unlocking button movably disposed on the carrier body 1 , and the folding and unlocking button directly or indirectly links the unlocking action of the folding and locking pin 53 .

[0032] Compared with the prior art, the utility model has the following advantages:

[0033] 1. The utility model sets the unfolding locking mechanism and the folding locking mechanism independently, and sets the unfolding unlocking mechanism and the folding unlocking mechanism independently, so that the locking and unlocking actions in the unfolded state and the locking and unlocking actions in the folded state do not interfere with each other, so as to better lock the support assembly in the unfolded state or the folded state accordingly, and ensure safe and reliable locking.

[0034] 2. The distance between the first slide groove and the second slide groove gradually increases in the direction away from the ground, so that the rear foot assembly moves upward along the slide groove assembly and swings forward at the same time, which makes it convenient for the joint seat of the rear foot assembly to move upward on the slide groove assembly and rotate and fold toward the backrest of the carrier body at the same time, which is beneficial to improving the operability of the child carrier and making the process of users switching the use status easier.

Brief Description of the Drawings

[0035] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0036] Figure 1 It is a structural schematic diagram of the utility model when it is in a cart use state.

[0037] Figure 2 It is a structural schematic diagram of the utility model when the car seat is in use.

[0038] Figure 3 This is one of the exploded views of the present utility model.

[0039] Figure 4 This is the second exploded view of the utility model.

[0040] Figure 5This is the third exploded view of the present utility model.

[0041] Figure 6 It is a cross-sectional view of the folding and locking mechanism of the utility model when it is in a locked state.

[0042] Figure 7 It is a cross-sectional view of the folding and locking mechanism of the present invention when it is in an unlocked state.

[0043] Figure 8 It is a cross-sectional view of the locking mechanism of the present invention when it is in a locked state.

[0044] Fig. 9 It is a cross-sectional view of the locking mechanism of the present invention when it is in an unlocked state. [Specific implementation method]

[0045] The implementation modes of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0046] like Figure 1-9 As shown, the utility model is a child carrier that can be reliably folded and unfolded and locked, comprising: a carrier body 1 having a seat portion and a backrest portion; a support assembly 2, the support assembly 2 being connected to the carrier body 1 and having an unfolded state and a folded state, the support assembly 2 being switched between the unfolded state and the folded state so that the child carrier can be switched between a stroller use state and a car seat use state respectively, the child carrier being used as an infant stroller in the stroller use state, and the child carrier being used to be connected to a car seat in the car seat use state. Use: an unfolding locking mechanism 3, the unfolding locking mechanism 3 is used to lock the support assembly 2 in the unfolded state; an unfolding unlocking mechanism 4, the unfolding unlocking mechanism 4 is used to link the unlocking action of the unfolding locking mechanism 3; a folding locking mechanism 5, the folding locking mechanism 5 is used to lock the support assembly 2 in the folded state, and the folding locking mechanism 5 and the unfolding locking mechanism 3 are independently arranged; a folding unlocking mechanism 6, the folding unlocking mechanism 6 is used to link the unlocking action of the folding locking mechanism 5, and the folding unlocking mechanism 6 and the unfolding unlocking mechanism 4 are independently arranged. The utility model can make the locking and unlocking actions in the unfolded state and the locking and unlocking actions in the folded state not interfere with each other by independently arranging the unfolding locking mechanism and the folding locking mechanism, so as to better lock the support assembly in the unfolded state or the folded state, and ensure safe and reliable locking.

[0047] like Figure 2 As shown, when the child carrier is in the car seat use state, the front leg assembly 21, the rear leg assembly 22 and the connecting rod assembly 23 are stored in the carrier body 1, which is convenient for combination with the car seat, thereby improving the space utilization rate in the car and enhancing the safety of riding in the car. Figure 1As shown, when the child carrier is in the pushchair use state, the front leg assembly 21 and the rear leg assembly 22 are unfolded and supported on the ground, which is convenient for pushing, and the state switching process of the child carrier is convenient and easy to operate.

[0048] like Figure 1-3 As shown, the carrier body may also be provided with a handle, so that the child carrier can be used as a basket when the car seat is in use, and the user can carry it. The handle includes but is not limited to a retractable handle, and when the stroller is in use, the user can extend the handle to use it as a handlebar when pushing, so as to facilitate the application of force.

[0049] Furthermore, in order to better lock the support assembly, the deployment locking mechanism 3 is used to lock the support assembly 2 in the deployed state relative to the carrier body 1; the folding locking mechanism 5 is used to lock the support assembly 2 in the folded state relative to the carrier body 1.

[0050] like Figure 1-3 As shown, the support assembly 2 includes: a front foot assembly 21, the upper end of the front foot assembly 21 is rotatably connected to the front part of the vehicle body 1; a rear foot assembly 22, the upper end of the rear foot assembly 22 is movably connected to the rear part of the vehicle body 1; a connecting rod assembly 23, the front end of the connecting rod assembly 23 is rotatably connected to the front foot assembly 21, and the rear end of the connecting rod assembly 23 is rotatably connected to the rear foot assembly 22, which is convenient for folding and unfolding; the unfolding locking mechanism 3 is located between the rear foot assembly 22 and the vehicle body 1 to lock the rear foot assembly 22 in the unfolded state relative to the vehicle body 1; the folding locking mechanism 5 is located between the rear foot assembly 22 and the vehicle body 1 to lock the rear foot assembly 22 in the folded state relative to the vehicle body 1.

[0051] like Figure 1 , 2 As shown, the rotation axis B between the rear end of the connecting rod assembly 23 and the rear joint seat 221 of the rear foot assembly 22 is eccentric to the rotation axis A between the rear joint seat 221 and the vehicle body 1. When the support assembly is folded, the rear foot assembly can be folded closer to the rear of the vehicle body, so that the folding locking block 51 is inserted into the preset locking position of the folding locking socket 52, ensuring that the folding locking pin 53 is accurately inserted into the folding locking hole 511.

[0052] like Figure 1-4As shown, in order to make the support assembly fold or unfold smoothly and stably, the rear part of the carrier body 1 is provided with a slideway assembly 11, and the upper end of the rear foot assembly 22 is slidably connected to the slideway assembly 11. The front foot assembly 21 is configured to drive the rear foot assembly 22 to slide on the slideway assembly 11 through the connecting rod assembly 23 during the switching process from the unfolded state to the folded state; or the rear foot assembly 22 is configured to drive the front foot assembly 21 to rotate correspondingly relative to the carrier body 1 through the connecting rod assembly 23 during the switching process from the unfolded state to the folded state so that the front foot assembly 21 is folded close to one side of the carrier body 1.

[0053] like Figure 1-4 As shown, the slide assembly 11 has a first slide 111 and a second slide 112, and the length direction of the first slide 111 is arranged crosswise with the length direction of the second slide 112; the rear foot assembly 22 includes a rear joint seat 221 and a rear joint slider 222 arranged on the rear joint seat 221, and the rear joint seat 221 and the rear joint slider 222 are respectively slidably connected with the first slide 111 and the second slide 112. In one embodiment, a first protrusion may be provided on the rear joint seat 221 to cooperate with the first slide 111, and a second protrusion may be provided on the rear joint slider 222 to cooperate with the second slide, so that the rear joint seat 221 and the rear joint slider 222 can rotate and slide relative to each other, thereby driving the rear foot assembly 22 to expand or collapse.

[0054] like Figure 1-4 As shown, the distance between the first slide groove 111 and the second slide groove 112 gradually increases in the direction away from the ground, so that the rear foot assembly 22 moves upward along the slide groove assembly 11 and swings forward at the same time, which can facilitate the joint seat of the rear foot assembly to move upward on the slide groove assembly and rotate and fold toward the backrest of the carrier body at the same time, which is beneficial to improve the operability of the child carrier and makes the process of users switching the use status simpler and easier.

[0055] like Figure 8 , 9As shown, in order to more stably lock the support assembly in the unfolded state and facilitate unlocking, the unfolding locking mechanism 3 includes an unfolding locking portion 31 provided on the carrier body 1 and an unfolding locking member 32 which is axially slidably provided on the rear joint seat 221 of the rear leg assembly 22 and is used to lock and cooperate with the unfolding locking portion 31 to lock the rear joint seat 221 relative to the carrier body 1, and an unfolding reset elastic member 33 for driving the unfolding locking member 32 to elastically reset is provided between the unfolding locking member 32 and the rear joint seat 221; the unfolding unlocking mechanism 4 is used to link the unlocking action of the unfolding locking member 32. The deployment unlocking mechanism 4 includes: a deployment unlocking member 41, which is movably arranged on the carrier body 1; a deployment top block 43, which is axially slidably arranged on the carrier body 1 and has a deployment inclined groove 431, and the deployment top block 43 is abutted and matched with the deployment locking member 32; a deployment pulling block 42 having a deployment unlocking protrusion 421 used in conjunction with the deployment inclined groove 431, the deployment pulling block 42 is movably arranged on the carrier body 1 and is connected to the deployment unlocking member 41 through a deployment unlocking pull rope, and is slidably connected to the deployment top block 43 along the deployment inclined groove 431; a pulling block reset member, which is located between the deployment pulling block 42 and the carrier body 1 to drive the deployment pulling block 42 to move and reset. When unlocking, the unlocking member 41 is pressed to move relative to the carrier body 1, and the unlocking member 41 drives the pulling block 42 to move accordingly through the unlocking pull rope, so that the unlocking projection 421 and the inclined groove 431 cooperate with each other to drive the top block 43 to slide accordingly, and at the same time, the top block 43 pushes the locking member 32 to slide toward the side of the rear joint seat 221 until the locking member 32 is separated from the locking portion 31, thereby releasing the locking state of the rear joint seat 221 relative to the carrier body 1. In this embodiment, the locking member 32 is a locking gear, and the locking portion 31 is a locking tooth groove meshing with the locking gear.

[0056] like Figure 6 , 7As shown, in order to more stably lock the support assembly in the folded state and facilitate unlocking, the folding locking mechanism 5 includes a folding locking block 51 which is arranged on the rear foot assembly 22 and has a folding locking hole 511, and a folding locking socket 52 which is arranged on the rear part of the carrier body 1 and is used for the folding locking block 51 to be inserted into. The carrier body 1 is movably provided with a folding locking pin 53 which is used to insert into the folding locking hole 511 to prevent the folding locking block 51 from separating from the folding locking socket 52 when the folding locking block 51 is inserted into the folding locking socket 52. A lock pin reset elastic member for driving the folding locking pin 53 to elastically reset is provided between the folding locking pin 53 and the carrier body 1. The folding unlocking mechanism 6 includes a folding unlocking button which is movably provided on the carrier body 1, and the folding unlocking button directly or indirectly links the unlocking action of the folding locking pin 53. When unlocking, the folding unlocking button is lifted to slide the folding locking pin 53 upward relative to the vehicle body until the folding locking pin 53 exits the folding locking hole 511 , thereby releasing the locking state of the rear leg assembly 22 relative to the vehicle body 1 .

Claims

1. A child carrier that can be reliably locked when folded and unfolded, characterized in that include: Vehicle body (1); A support assembly (2), the support assembly (2) being connected to the carrier body (1) and having an unfolded state and a folded state, the support assembly (2) switching between the unfolded state and the folded state so that the child carrier switches between a stroller use state and a car seat use state respectively, the child carrier being used as an infant stroller in the stroller use state, and the child carrier being used in connection with a car seat in the car seat use state; An unfolding locking mechanism (3), wherein the unfolding locking mechanism (3) is used to lock the support assembly (2) in an unfolded state; An unfolding unlocking mechanism (4), the unfolding unlocking mechanism (4) being used to link the unfolding locking mechanism (3) with an unlocking action; A folding locking mechanism (5), wherein the folding locking mechanism (5) is used to lock the support assembly (2) in a folded state, and the folding locking mechanism (5) and the unfolding locking mechanism (3) are independently arranged; A folding and unlocking mechanism (6), wherein the folding and unlocking mechanism (6) is used to link the unlocking action of the folding and locking mechanism (5), and the folding and unlocking mechanism (6) and the unfolding and unlocking mechanism (4) are independently arranged.

2. A child carrier that can be reliably locked when folded and unfolded according to claim 1, characterized in that The unfolding locking mechanism (3) is used to lock the support assembly (2) in an unfolded state relative to the carrier body (1); and the folding locking mechanism (5) is used to lock the support assembly (2) in a folded state relative to the carrier body (1).

3. A child carrier that can be reliably locked when folded and unfolded according to claim 2, characterized in that The support assembly (2) comprises: A front foot assembly (21), the upper end of the front foot assembly (21) being rotatably connected to the front part of the vehicle body (1); A rear foot assembly (22), the upper end of which is movably connected to the rear portion of the vehicle body (1); A connecting rod assembly (23), wherein the front end of the connecting rod assembly (23) is rotatably connected to the front foot assembly (21), and the rear end of the connecting rod assembly (23) is rotatably connected to the rear foot assembly (22); The unfolding locking mechanism (3) is located between the rear leg assembly (22) and the vehicle body (1) and is used to lock the rear leg assembly (22) in an unfolded state relative to the vehicle body (1); The folding and locking mechanism (5) is located between the rear leg assembly (22) and the vehicle body (1) and is used to lock the rear leg assembly (22) in a folded state relative to the vehicle body (1).

4. A child carrier that can be reliably locked when folded and unfolded according to claim 3, characterized in that A slide slot assembly (11) is provided at the rear of the carrier body (1), and the upper end of the rear foot assembly (22) is slidably connected to the slide slot assembly (11).

5. A child carrier that can be reliably locked when folded and unfolded according to claim 4, characterized in that The front foot assembly (21) is configured such that during the switching process from the deployed state to the folded state, the rear foot assembly (22) is driven to slide on the slide groove assembly (11) through the connecting rod assembly (23); or the rear foot assembly (22) is configured such that during the switching process from the deployed state to the folded state, the front foot assembly (21) is driven to rotate correspondingly relative to the carrier body (1) through the connecting rod assembly (23) so that the front foot assembly (21) is folded toward one side of the carrier body (1).

6. A child carrier that can be reliably locked when folded and unfolded according to claim 4, characterized in that The slide groove assembly (11) comprises a first slide groove (111) and a second slide groove (112), and the length direction of the first slide groove (111) is arranged crosswise with the length direction of the second slide groove (112); the rear foot assembly (22) comprises a rear joint seat (221) and a rear joint slider (222) arranged on the rear joint seat (221), and the rear joint seat (221) and the rear joint slider (222) are slidably connected to the first slide groove (111) and the second slide groove (112) respectively.

7. A child carrier that can be reliably locked when folded and unfolded according to claim 6, characterized in that The distance between the first slide groove (111) and the second slide groove (112) gradually increases in a direction away from the ground, so that the rear foot assembly (22) moves upward along the slide groove assembly (11) and swings forward at the same time.

8. A child carrier that can be reliably folded and unfolded and locked according to any one of claims 3 to 7, characterized in that The deployment locking mechanism (3) comprises a deployment locking portion (31) provided on the vehicle body (1) and a deployment locking member (32) axially slidably provided on a rear joint seat (221) of a rear foot assembly (22) and used for locking and cooperating with the deployment locking portion (31) to lock the rear joint seat (221) relative to the vehicle body (1); a deployment resetting elastic member (33) for driving the deployment locking member (32) to resiliently reposition is provided between the deployment locking member (32) and the rear joint seat (221); and the deployment unlocking mechanism (4) is used for linking the unlocking action of the deployment locking member (32).

9. A child carrier that can be reliably locked when folded and unfolded according to claim 8, characterized in that The unfolding and unlocking mechanism (4) comprises: An unfolding unlocking member (41), wherein the unfolding unlocking member (41) is movably arranged on the carrier body (1); An unfolding top block (43), the unfolding top block (43) is axially slidably disposed on the carrier body (1) and has an unfolding inclined groove (431), the unfolding top block (43) abuts against and cooperates with the unfolding locking member (32); An unfolding pull block (42), the unfolding pull block (42) being movably arranged on the carrier body (1) and connected to the unfolding unlocking member (41) via an unfolding unlocking pull rope, and being slidably connected to the unfolding top block (43) along the unfolding inclined groove (431); A pulling block reset member is located between the unfolded pulling block (42) and the carrier body (1) and is used to drive the unfolded pulling block (42) to reset.

10. A child carrier that can be reliably folded and unfolded and locked according to any one of claims 3 to 7, characterized in that The folding and locking mechanism (5) comprises a folding and locking block (51) provided on the rear foot assembly (22) and having a folding and locking hole (511), and a folding and locking socket (52) provided on the rear part of the carrier body (1) and used for inserting the folding and locking block (51). The carrier body (1) is movably provided with a folding and locking pin (53) used for inserting into the folding and locking hole (511) to prevent the folding and locking block (51) from separating from the folding and locking socket (52) when the folding and locking block (51) is inserted into the folding and locking socket (52). A lock pin reset elastic member used for driving the folding and locking pin (53) to reset elastically is provided between the folding and locking pin (53) and the carrier body (1); The folding and unlocking mechanism (6) comprises a folding and unlocking button movably arranged on the carrier body (1), and the folding and unlocking button directly or indirectly links the unlocking action of the folding and locking pin (53).

Images