CN111000386A - Safety seat capable of being unlocked manually - Google Patents

Abstract

The invention discloses a safety seat capable of being unlocked manually, which comprises a seat and a blocking rod frame positioned on the front side of the seat, wherein two ends of the blocking rod frame are respectively and rotatably connected with two sides of the seat; the seat is provided with a driver, an adapter, an elastic piece and a limiting shaft which are connected in sequence; the driver drives the adaptor to move towards or away from the direction of the stop lever frame; when the adapter moves to the maximum stroke towards the stop lever frame, the limiting shaft is positioned on the rotating path of the stop lever frame; when the elastic piece is compressed, the limiting shaft can be separated from the rotating path of the stop lever frame. In the invention, no matter the driver is electrified or de-electrified, the limit shaft is manually pressed towards the elastic part to compress the elastic part, so that the limit shaft is separated from the rotating path of the stop lever frame, the interference of the limit shaft on the rotation of the stop lever frame can be avoided, and the stop lever frame is lifted, thereby realizing manual unlocking.

Description

Safety seat capable of being unlocked manually

Technical Field

The invention relates to the technical field of seats, in particular to a safety seat capable of being unlocked manually.

Background

The safety seat in the existing amusement industry enables the safety catch lever to catch the body of a passenger by rotating the safety catch lever, so that the passenger is limited on the seat; the unlocking and locking of the stop lever are driven by the electric components, and once the electric components are powered off or damaged, particularly in the accident of power-off rescue, the passengers are greatly troubled due to the fact that the safety stop lever cannot be unlocked or is difficult to unlock.

Accordingly, the prior art is yet to be improved and developed.

Disclosure of Invention

The invention provides a safety seat capable of being unlocked manually, aiming at solving the technical problem that the safety seat cannot be unlocked manually in the power failure in the prior art.

The technical scheme adopted by the invention for solving the technical problem is as follows:

a safety seat capable of being unlocked manually comprises a seat and a blocking rod frame positioned on the front side of the seat, wherein two ends of the blocking rod frame are respectively and rotatably connected with two sides of the seat; the seat is provided with a driver, an adapter, an elastic piece and a limiting shaft which are connected in sequence; the driver drives the adaptor to move towards or away from the direction of the stop lever frame; when the adapter moves to the maximum stroke towards the stop lever frame, the limiting shaft is positioned on the rotating path of the stop lever frame; when the elastic piece is compressed, the limiting shaft can be separated from the rotating path of the stop lever frame.

The safety seat capable of being unlocked manually is characterized in that one end, far away from the elastic piece, of the limiting shaft is provided with a guide inclined plane, and the guide inclined plane inclines towards the elastic piece from top to bottom.

The safety seat capable of being unlocked manually comprises a stop lever and connecting rod assemblies, wherein the connecting rod assemblies are arranged at two ends of the stop lever respectively, and the connecting rod assemblies are connected with the seat in a rotating mode.

The safety seat capable of being unlocked manually is characterized in that when the limiting shaft is located on the front side of a connecting point of the connecting rod assembly and the seat and the stop lever frame is in a locked state, the lower surface of the limiting shaft is in contact with the connecting rod assembly.

The safety seat capable of being unlocked manually is characterized in that when the limiting shaft is located on the rear side of a connecting point of the connecting rod assembly and the seat and the stop lever frame is in a locked state, the upper surface of the limiting shaft is in contact with the connecting rod assembly.

The safety seat capable of being unlocked manually is characterized in that the elastic piece extends and retracts in a direction parallel to the stop lever.

But safety seat of manual unblock, wherein, be provided with the mounting groove on the spacing axle, the elastic component and the adaptor is kept away from the one end of driver and all is located in the mounting groove.

The safety seat capable of being unlocked manually is characterized in that the driver comprises a linear motor and a driving shaft, and the driving shaft is connected with the linear motor and the elastic piece respectively; the linear motor drives the driving shaft to reciprocate along a straight line.

The safety seat capable of being unlocked manually is characterized in that a first induction baffle is arranged on the driving shaft, and a first microswitch is connected to the seat; when the driving shaft moves to the maximum stroke towards the stop lever frame, the first induction baffle triggers the first microswitch.

The safety seat capable of being unlocked manually is characterized in that a second induction baffle is arranged on the driving shaft, and a second microswitch is connected to the seat; when the driving shaft moves to the maximum stroke in the direction away from the stop lever frame, the second induction baffle triggers the second microswitch.

Has the advantages that: in the invention, no matter the driver is electrified or de-electrified, the limit shaft is manually pressed towards the elastic part to compress the elastic part, so that the limit shaft is separated from the rotation path of the stop lever frame, the interference of the limit shaft on the rotation of the stop lever frame can be avoided, the stop lever frame is lifted, and the manual unlocking of the safety seat capable of being manually unlocked is realized.

Drawings

FIG. 1 is a schematic view of a manually unlockable safety seat according to the present invention;

FIG. 2 is a reference view of the manually unlockable safety seat in an unlocked state when the limiting shaft is located at the front side of the connecting point of the connecting rod assembly and the seat in the present invention;

FIG. 3 is a reference view of the manually unlocked safety seat in a locked position when the limiting shaft is located at the front side of the connecting point of the connecting rod assembly and the seat in the present invention;

FIG. 4 is a reference view of the manually unlocked safety seat in an unlocked position when the limiting shaft is located at the rear side of the connecting point of the connecting rod assembly and the seat in the present invention;

FIG. 5 is a reference view of the manually unlocked safety seat in a locked position when the limiting shaft is located behind the connecting point of the connecting rod assembly and the seat in the present invention;

FIG. 6 is a schematic view of the structure of the stopper rod holder according to the present invention;

FIG. 7 is a schematic view of the assembly of the driver, the adaptor, the resilient member and the limiting shaft according to the present invention;

FIG. 8 is a schematic view of the assembly of the adapter, the guide cylinder and the stop shaft according to the present invention;

FIG. 9 is a state diagram of the first sensing barrier cooperating with the first microswitch when the manually unlockable safety seat of the present invention is in a locked state;

fig. 10 is a state diagram of the second sensing barrier cooperating with the second microswitch when the safety seat capable of being unlocked manually according to the present invention is in an unlocked state.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The invention will be further explained by the description of the embodiments with reference to the drawings.

The invention provides a safety seat capable of being unlocked manually, which comprises a seat 1, wherein the seat 1 comprises a seat framework 101 and a plurality of seat bodies 102 arranged on the seat framework 101; the plurality of seat bodies 102 are arranged in series along a straight line. But safety seat of manual unblock still includes fender rod frame 6, fender rod frame 6 erects the front side of seat skeleton 101, and the both ends of fender rod frame 6 respectively with the left and right sides of seat skeleton 101 is rotated and is connected.

As shown in fig. 7, the seat frame 101 is provided with a driver 2, an adaptor 3, an elastic member 4 and a limit shaft 5 which are connected in sequence; the limiting shaft 5 is close to the stop lever frame 6; the driver 2 drives the adaptor 3 to move back and forth along a straight line in a direction close to the stop rod frame 6 or in a direction far away from the stop rod frame 6, so that the limiting shaft 5 is driven to be close to the stop rod frame 6 or far away from the stop rod frame 6 through the conduction of the adaptor 3 and the elastic piece 4. When the driver 2 drives the adaptor 3 to move to the maximum stroke towards the direction of the stop lever frame 6, the limiting shaft 5 is located on the rotation path of the stop lever frame 6, and then the limiting shaft 5 interferes with the rotation of the stop lever frame 6. When the elastic piece 4 is compressed, the limiting shaft 5 can be separated from the rotating path of the blocking rod frame 6, and then the limiting shaft 5 can not interfere with the rotation of the blocking rod frame 6 any more, so that the unlocking of the safety seat capable of being manually unlocked is realized.

When unlocking is needed, the limiting shaft 5 is pushed towards the elastic part 4 to compress the elastic part 4, and the limiting shaft 5 is separated from the rotating path of the stop lever frame 6; at this time, the blocking rod frame 6 can rotate freely, and the blocking rod frame 6 can be lifted up, so that the unlocking of the blocking rod frame 6 is realized.

In the invention, no matter the driver 2 is electrified or de-electrified, the limit shaft 5 is manually pressed towards the elastic part 4 to compress the elastic part 4, so that the limit shaft 5 is separated from the rotating path of the stop lever frame 6, the interference of the limit shaft 5 on the rotation of the stop lever frame 6 can be avoided, and the stop lever frame 6 is lifted, thereby realizing the manual unlocking of the safety seat capable of being manually unlocked.

As shown in fig. 6, the blocking bar frame 6 includes a blocking bar 61 and link assemblies 62 respectively disposed at both ends of the blocking bar 61, and the link assemblies 62 are rotatably connected to the seat 1. The stopper 61 is parallel to the arrangement direction of the plurality of seat bodies 102; the stop lever 61 is positioned at the front side of the seat bodies 102, and both ends of the stop lever 61 exceed the two outermost seat bodies 102; the stop lever 61 of the present invention can limit and protect all the passengers seated on the seat body 102. The link assembly 62 is rotatably coupled to a side surface of the seat frame 101, thereby rotatably coupling the blocking lever 61 to the seat frame 101.

In one embodiment, as shown in fig. 3, when the limiting shaft 5 is located at the front side of the connection point a between the connecting rod assembly 62 and the seat 1 and the blocking rod frame 6 is in the locked state, the lower surface of the limiting shaft 5 contacts the connecting rod assembly 62, that is, the limiting shaft 5 is located above the connecting rod assembly 62, so that the blocking rod 61 cannot rotate upward. As shown in fig. 2, when the limiting shaft 5 is located at the front side of the connection point a of the link assembly 62 and the seat 1, and the blocking lever frame 6 is in the unlocked state, the limiting shaft 5 is located below the link assembly 62.

In another embodiment, as shown in fig. 5, when the limiting shaft 5 is located at the rear side of the connection point a between the connecting rod assembly 62 and the seat 1 and the blocking rod frame 6 is in the locked state, the upper surface of the limiting shaft 5 contacts the connecting rod assembly 62, that is, the limiting shaft 5 is located below the connecting rod assembly 62, so that the blocking rod 61 cannot rotate upward. As shown in fig. 4, when the limiting shaft 5 is located at the rear side of the connection point a of the link assembly 62 and the seat 1 and the blocking lever bracket 6 is in the unlocked state, the limiting shaft 5 is located above the link assembly 62.

One end of the connecting rod assembly 62 is connected with the stop lever 61, and the other end of the connecting rod assembly is suspended; in order to avoid that the installation of the driver 2, the adaptor 3, the elastic element 4 and the limiting shaft 5 on the seat frame 101 affects the passenger's ride, in the invention, the connection point a of the connecting rod assembly 62 and the seat frame 101 is located between the free end 100 of the connecting rod assembly 62 and the stop lever 61, and the limiting shaft 5 and the free end 100 cooperate to realize the locking of the stop lever frame 6.

When the stop lever 61 moves upward, the free end 100 moves downward; when the stopper 61 is moved downward, the free end 100 is moved upward. The seat 1 is provided with a driver 2, an adapter 3, an elastic part 4 and a limiting shaft 5 which are connected in sequence; the limiting shaft 5 is close to the suspension end 100 of the connecting rod assembly 62; the driver 2 drives the adaptor 3 to move back and forth along a straight line in a direction close to the hanging end 100 or in a direction far away from the hanging end 100, so that the limiting shaft 5 is driven to be close to the hanging end 100 or far away from the hanging end 100 through the conduction of the adaptor 3 and the elastic piece 4; the direction of movement of the adapter 3 is parallel to the stop lever 61. When the driver 2 drives the connecting rod assembly 62 to move toward the direction of the hanging end 100 to the maximum stroke, the limiting shaft 5 is located on the rotation path of the hanging end 100, and then the limiting shaft 5 interferes with the rotation of the hanging end 100. When the elastic member 4 is compressed, the limit shaft 5 may be separated from the rotation path of the hanging end 100, and the limit shaft 5 cannot interfere with the rotation of the hanging end 100 any more, so as to unlock the stop lever 61 from the hanging end 100.

In a specific application, as shown in fig. 5, when the stop lever 61 is in a locked state, the connecting rod assembly 62 is in an inclined state, the stop lever 61 is lower than the hanging end 100, the hanging end 100 is located above the limiting shaft 5, the connecting rod assembly 62 moves towards the hanging end 100 to a maximum stroke, the limiting shaft 5 is located on a rotation path of the hanging end 100, and the limiting shaft 5 interferes with the hanging end 100, so that the hanging end 100 cannot move downward, that is, the stop lever 61 cannot move upward.

When the stop lever 61 needs to be unlocked, the limiting shaft 5 is pushed towards the elastic part 4 only, so that the elastic part 4 is compressed, and the limiting shaft 5 is separated from the rotating path of the suspended end 100; at this time, the free end 100 can rotate freely, and the stop lever 61 can be lifted up, so that the stop lever 61 is unlocked.

In the invention, no matter the driver 2 is electrified or de-electrified, the limit shaft 5 is manually pressed towards the elastic part 4 to compress the elastic part 4, so that the limit shaft 5 is separated from the rotating path of the suspension end 100, the interference of the limit shaft 5 on the rotation of the suspension end 100 can be avoided, the stop lever 61 is lifted, the unlocking between the stop lever 61 and the suspension end 100 is realized, and the manual unlocking of the safety seat capable of being manually unlocked is realized.

As shown in fig. 7 and 8, a guide inclined surface 7 is provided at one end of the limiting shaft 5 facing away from the elastic member 4, and the guide inclined surface 7 is inclined from top to bottom toward the elastic member 4. According to the invention, the elastic part 4 is arranged between the limiting shaft 5 and the adapter part 3, and the guide inclined plane 7 is arranged on the limiting shaft 5, so that the locking of the safety seat capable of being manually unlocked can be manually realized even if the limiting shaft 5 is positioned on the rotation path of the suspension end 100.

Specifically, initially, the link assembly 62 is in an inclined state, and the stop lever 61 is higher than the suspension end 100, at this time, the stop lever 61 cannot block and protect the passenger on the seat body 102; when the adaptor 3 moves to the maximum stroke in the direction of the hanging end 100, the limiting shaft 5 is in an extending state, and the limiting shaft 5 is located above the hanging end 100 and on the rotation path of the hanging end 100. When it is required to lock the blocking lever 61 to protect the passenger, the blocking lever 61 is pulled downward, and the free end 100 is rotated upward and contacts the guide slope 7; under the guiding action of the guide inclined plane 7, the hanging end 100 continues to move upwards along the guide inclined plane 7 and pushes the limit shaft 5 to compress the elastic part 4, so that the hanging end 100 can continue to move upwards; when free end 100 rotates to breaking away from when spacing axle 5, elastic component 4 resumes elastic deformation, spacing axle 5 is in stretch out under elastic component 4's the elastic force effect, and be in on the rotation path of free end 100, thereby will free end 100 locks the top of spacing axle 5, pin 61 is in the position that leans on down before the passenger's body, blocks the protection to the passenger.

Therefore, when the driver 2 drives the limit shaft 5 to extend out through the adapter 3 and interfere with the rotation of the suspension end 100, the driver 2 does not need to be started to withdraw the limit shaft 5, and the unlocking and locking of the safety seat capable of being manually unlocked can be manually realized.

In a specific embodiment, when the limiting shaft 5 is located on the rotation path of the hanging end 100 and the limiting shaft 5 is located below the hanging end 100, the hanging end 100 contacts with the lower end of the guiding inclined surface 7, so that when the hanging end 100 rotates upwards, the guiding inclined surface 7 plays a good guiding role in the rotation of the hanging end 100.

The flexible direction of elastic component 4 is on a parallel with pin 61 for elastic deformation takes place for elastic component 4 and drives when spacing axle 5 removes, spacing axle 5 can be along on a parallel with pin 61's direction is linear motion, spacing axle 5 for adaptor 3's moving direction with adaptor 3 is parallel for driver 2's moving direction, thereby reaches driver 2 drive adaptor 3 to when elastic component 4 direction removes, can guarantee spacing axle 5 to free end 100 direction can move to on free end 100's the rotation route, spacing axle 5 with free end 100's rotation route can not produce the skew.

The elastic part 4 is a spring; the elastic piece 4 is located on an extension line of a moving path of the adapter piece 3, namely, the adapter piece 3 and the elastic piece 4 are coaxially arranged, so that when the driver 2 drives the adapter piece 3 to move, the adapter piece 3 can accurately drive the elastic piece 4 to move along the adapter piece 3, and the limiting shaft 5 is driven to extend out or retract along a straight line.

The connecting rod assembly 62 comprises a first connecting rod 621, a second connecting rod 622 and a clamping lug 623 which are connected in sequence; the first link 621 is connected to the blocking lever 61; one end of the second link 622 is connected to the first link 621, and the other end passes through the seat frame 101 and is connected to the clamping lug 623; the first link 621 is located on one side of the seat frame 101 close to the seat body 102; one end of the clamping lug 623, which is far away from the second link 622, is suspended to form the suspended end 100. The second link 622 can rotate relative to the seat frame 101, and drives the engaging lug 623 and the stop lever 61 to rotate relative to the seat frame 101.

The driver 2, the adaptor 3 and the elastic piece 4 are located on the same side of the seat frame 101 as the first connecting rod 621, and one end of the limiting shaft 5, which is far away from the elastic piece 4, penetrates through the seat frame 101 and extends out of the seat frame 101. In the invention, one end of the limiting shaft 5, which is far away from the elastic part 4, extends to the other side of the seat frame 101, so that the limiting shaft 5 is supported by the seat frame 101, and therefore, when the safety seat capable of being unlocked manually is in a locked state, a passenger can lift the stop lever 61 upwards, and the limiting shaft 5 can stably support the free end 100; the stability of the manually-unlockable safety seat in the locked state is ensured.

As shown in fig. 7, a universal joint 8 is provided between the adaptor 3 and the driver 2. In the invention, the universal joint 8 is arranged between the driver 2 and the adapter 3, so that the requirement on the coaxiality between the driver 2 and the adapter 3 is reduced, and the driver 2 can drive the adapter 3 to approach or depart from the suspension end 100 along a straight line parallel to the stop rod 61 even if slight dislocation is generated between the driver 2 and the adapter 3.

As shown in fig. 7 and 8, a mounting groove 51 is provided on the limiting shaft 5, and the mounting groove 51 has an opening facing the driver 2; one end of the adaptor 3, which is far away from the driver 2, is inserted into the mounting groove 51; the elastic element 4 is positioned in the mounting groove 51 and connects the adaptor 3 with the inner wall of the mounting groove 51. According to the invention, the mounting groove 51 is arranged on the limiting shaft 5, and the elastic part 4 is limited through the mounting groove 51, so that the force transmission direction of the elastic part 4 between the adapter part 3 and the limiting shaft 5 is ensured to be a straight line, and when the adapter part 3 moves to the maximum stroke towards the suspension end 100, the limiting shaft 5 can be in contact with the suspension end 100, and deflection is avoided. Meanwhile, the installation groove 51 limits the elastic element 4, so that the elastic element 4 can stretch and retract along a straight line when elastically deformed, and the coaxiality of the limiting shaft 5 and the adaptor 3 relative to the movement of the driver 2 is ensured.

As shown in fig. 7, 9 and 10, the driver 2 includes a linear motor 21 and a driving shaft 22, and the driving shaft 22 is connected to the linear motor 21 and the elastic member 4, respectively; the linear motor 21 drives the driving shaft 22 to move linearly; the direction of movement of the drive shaft 22 is parallel to the stop lever 61.

As shown in fig. 7, 9 and 10, a first sensing baffle 9 is arranged on the driving shaft 22, and a first microswitch 11 is connected to the seat 1; when the driving shaft 22 moves to the maximum stroke toward the hanging end 100, the first inductive baffle 9 triggers the first microswitch 11. A second induction baffle 10 is arranged on the driving shaft 22, and a second microswitch is connected to the seat 1; when the driving shaft 22 moves to the maximum stroke in the direction away from the hanging end 100, the second inductive baffle 10 triggers the second microswitch 12.

The first induction baffle 9 and the second induction baffle 10 are parallel and symmetrically arranged; the arrangement direction of the first sensing baffle 9 and the second sensing baffle 10 is parallel to the stop lever 61. The first sensing baffle 9 is matched with the first microswitch 11 so as to indicate the state that the limit shaft 5 is positioned on the rotation path of the hanging end 100; the second sensing baffle 10 is matched with the second microswitch 12, so that the state that the limiting shaft 5 is in a rotating path separated from the hanging end 100 is indicated.

In a specific embodiment, as shown in fig. 9 and 10, the first microswitch 11 and the second microswitch 12 are both located between the first sensing baffle 9 and the second sensing baffle 10; the first induction baffle 9 is far away from the adaptor 3, and the second induction baffle 10 is close to the adaptor 3.

In another specific embodiment, the first sensing baffle 9 and the second sensing baffle 10 are both located between the first microswitch 11 and the second microswitch 12; the first induction baffle 9 is close to the adaptor 3, and the second induction baffle 10 is far from the adaptor 3.

As shown in fig. 7 and 8, the safety seat capable of being unlocked manually further includes a guide cylinder 13 sleeved on the adaptor 3 and the limiting shaft 5; one end of the adapter 3, which is far away from the limiting shaft 5, penetrates through the guide cylinder 13 to be connected with the universal joint 8, and the guide cylinder 13 is fixedly connected with the adapter 3 to move linearly along with the adapter 3; the limiting shaft 5 can move in the guide cylinder 13; the adaptor 3 and the limiting shaft 5 are both limited by the guide cylinder 13, so that the coaxiality between the adaptor 3 and the limiting shaft 5 is improved; meanwhile, the limiting shaft 5 is pressed and released, so that when the limiting shaft 5 moves relative to the guide cylinder 13, the limiting shaft 5 can move along a straight line under the limiting action of the guide cylinder 13.

The seat framework 101 is provided with a mounting hole; when the limiting shaft 5 is located on the rotation path of the suspension end 100, one end of the guide cylinder 13, which is far away from the driver 2, is located in the mounting hole, so that when the limiting shaft 5 blocks and limits the clamping lug 623, the pressure of the clamping lug 623 on the limiting shaft 5 can be transmitted to the seat framework 101 through the guide cylinder 13, and the strength and stability of the limiting shaft 5 on the support of the clamping lug 623 are improved.

As shown in fig. 8, at least one limiting groove 52 is disposed on an outer side wall of the limiting shaft 5, a length direction of the limiting groove 52 is disposed along an axial direction of the limiting shaft 5, and a depth direction of the limiting groove 52 is disposed along a radial direction of the limiting shaft 5; a limiting pin 131 is arranged on the guide cylinder 13, and the limiting pin 131 penetrates through the guide cylinder 13 and extends into the limiting groove 52; when the safety seat capable of being unlocked manually is in a locked state, the limit pin 131 is in contact with a side wall of the limit groove 52 on a side close to the driver 2; when the limit pin 131 contacts with the side wall of the limit groove 52 on the side away from the driver 2, the limit shaft 5 moves to the rotation path away from the hanging end 100 in the direction away from the hanging end 100.

The limiting pin 131 is matched with the limiting groove 52, so that the limiting shaft 5 is limited, and the elastic deformation generated when the elastic part 4 is compressed and released is prevented from being too large and exceeding the deformation capacity of the elastic part 4.

As shown in fig. 8, an annular protrusion 31 is disposed on an outer wall of the adaptor 3, and the annular protrusion 31 is located in the mounting groove 51 and contacts with an inner wall of the mounting groove 51; a stop block 14 is arranged at one end of the limiting shaft 5 facing the driver 2, and the stop block 14 is in contact with the outer side wall of the adaptor 3; when the manually unlockable safety seat is in the locked state, the stopper 14 is in contact with the annular projection 31; the annular boss portion 31 limits the stopper 14, thereby limiting the limiting shaft 5. The annular convex part 31 is matched with the stop block 14, and the limit pin 131 is matched with the limit groove 52, so that the guide cylinder 13 and the adaptor 3 perform double limit on the limit shaft 5 along the axial direction of the limit shaft 5.

As shown in fig. 5 and 6, at least one air cylinder 15 is further disposed on the seat frame 101, and a piston rod of the air cylinder 15 is connected to the first link 621; as shown in fig. 5, when the manually unlockable safety seat is in a locked state, the piston rod of the air cylinder 15 is at a minimum stroke; as shown in fig. 6, when the manually unlockable safety seat is in a locked state, the piston rod of the air cylinder 15 is at a maximum stroke. When the adaptor 3 moves to the maximum stroke in the direction of the free end 100 and needs to lock the stop lever 61, the stop lever 61 can be pulled downwards by retracting the piston rod of the cylinder 15, and the free end 100 moves upwards and extrudes the limit shaft 5 under the guiding action of the guide inclined plane 7 until the free end 100 moves to the upper part of the limit shaft 5 and contacts with the limit shaft 5, so that the stop lever 61 is locked in a limit protection state for passengers.

When the adaptor 3 moves to the direction of the suspension end 100 to the maximum stroke and needs to unlock the stop lever 61, the driver 2 can be manually pressed to the limit shaft 5, so that the limit shaft 5 is separated from the rotation path of the suspension end 100 and extends out of the piston rod of the cylinder 15 to prop the stop lever 61 to move upwards until the suspension end 100 moves to the lower part of the limit shaft 5, the limit shaft 5 is released, and the stop lever 61 is unlocked for limiting passengers.

In summary, the safety seat capable of being unlocked manually provided by the invention comprises a seat and a blocking rod frame positioned at the front side of the seat, wherein two ends of the blocking rod frame are respectively rotatably connected with two sides of the seat; the seat is provided with a driver, an adapter, an elastic piece and a limiting shaft which are connected in sequence; the driver drives the adaptor to move towards or away from the direction of the stop lever frame; when the adapter moves to the maximum stroke towards the stop lever frame, the limiting shaft is positioned on the rotating path of the stop lever frame; when the elastic piece is compressed, the limiting shaft can be separated from the rotating path of the stop lever frame. In the invention, no matter the driver is electrified or de-electrified, the limit shaft is manually pressed towards the elastic part to compress the elastic part, so that the limit shaft is separated from the rotation path of the stop lever frame, the interference of the limit shaft on the rotation of the stop lever frame can be avoided, the stop lever frame is lifted, and the manual unlocking of the safety seat capable of being manually unlocked is realized.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.

Claims (10)

1. A safety seat capable of being unlocked manually comprises a seat and is characterized by further comprising a blocking rod frame positioned on the front side of the seat, wherein two ends of the blocking rod frame are respectively and rotatably connected with two sides of the seat; the seat is provided with a driver, an adapter, an elastic piece and a limiting shaft which are connected in sequence; the driver drives the adaptor to move towards or away from the direction of the stop lever frame; when the adapter moves to the maximum stroke towards the stop lever frame, the limiting shaft is positioned on the rotating path of the stop lever frame; when the elastic piece is compressed, the limiting shaft can be separated from the rotating path of the stop lever frame.

2. The manually unlockable safety seat according to claim 1, wherein one end of the stopper shaft, which is away from the elastic member, is provided with a guide slope, which is inclined from top to bottom toward the elastic member.

3. The manually unlockable safety seat according to claim 1, wherein the bar frame includes a bar and link assemblies respectively disposed at both ends of the bar, the link assemblies being rotatably connected to the seat.

4. The manually unlockable safety seat according to claim 3, wherein when the restraining shaft is located on a front side of a connection point of the link assembly and the seat and the bar frame is in the locked state, a lower surface of the restraining shaft contacts the link assembly.

5. The manually unlockable safety seat according to claim 3, wherein when the restraining shaft is located at a rear side of a connection point of the link assembly and the seat and the bar frame is in the locked state, an upper surface of the restraining shaft is in contact with the link assembly.

6. A manually unlockable safety seat according to claim 3, wherein the direction of extension of the resilient member is parallel to the bar.

7. The manually unlockable safety seat according to claim 1, wherein an installation groove is formed in the limiting shaft, and the elastic member and the adaptor are located at one end of the driver away from the driver and in the installation groove.

8. The manually unlockable safety seat according to claim 1, wherein the driver includes a linear motor and a drive shaft connected to the linear motor and the elastic member, respectively; the linear motor drives the driving shaft to reciprocate along a straight line.

9. The manually unlockable safety seat according to claim 8, wherein a first inductive baffle is provided on the drive shaft, and a first microswitch is connected to the seat; when the driving shaft moves to the maximum stroke towards the stop lever frame, the first induction baffle triggers the first microswitch.

10. The manually unlockable safety seat according to claim 8, wherein a second inductive baffle is provided on the drive shaft, and a second microswitch is connected to the seat; when the driving shaft moves to the maximum stroke in the direction away from the stop lever frame, the second induction baffle triggers the second microswitch.

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