CN218121335U - Passenger head protection test device - Google Patents

Abstract

The application discloses passenger head protection test device for be connected with the impact member that awaits measuring, passenger head protection test device includes: the device comprises a driving assembly, an air curtain assembly and a speed reduction assembly. The driving assembly comprises a driving piece and a transmission piece, the driving piece is in transmission connection with the transmission piece, the impact piece to be tested is installed on the transmission piece, and the transmission piece is provided with a deceleration impact part; the air curtain assembly comprises an air curtain and a first fixing plate, and the air curtain is arranged on one side, facing the impact piece to be tested, of the first fixing plate; the speed reduction assembly comprises a speed reduction part suitable for deformation, the speed reduction part is positioned at the front end of the speed reduction impact part in the moving direction of the transmission part, and before the impact part to be tested is contacted with the air curtain, the speed reduction impact part is contacted with the speed reduction part firstly. According to the utility model discloses a be used for passenger head protection test device carries out the side head subsystem through using test device experimental, can improve experimental precision, simplifies test equipment, saves experimental cost, shortens experimental cycle, improves experimental controllability.

Description

Passenger head protection test device

Technical Field

The utility model belongs to the technical field of the automotive technology and specifically relates to a passenger head protection test device is related to.

Background

In the prior art, when a vehicle has a side collision, such as a wall collision, a column collision and the like, the side air curtain is used for protecting the head of a passenger, and the head is prevented from colliding hard objects to cause fatal damage. In the research and development design stage of the side air curtain, the vehicle enterprises generally adopt the design of checking, simulation, subsystem dynamic sliding table, whole vehicle test and the like and verify the protection performance of the side air curtain. But the dynamic sliding table of the subsystem has the defects of high cost, limited precision, long period, low adjustability and the like.

Disclosure of Invention

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a passenger head protection test device can simplify test equipment, reduces test cost, improves experimental precision, shortens test cycle, and the holistic controllability of device is strong.

According to the utility model discloses passenger's head protection test device for be connected with the impact member that awaits measuring, include: drive assembly, air curtain assembly and speed reduction assembly. The driving assembly comprises a driving piece and a transmission piece, the driving piece is in transmission connection with the transmission piece, the impact piece to be tested is installed on the transmission piece, and the transmission piece is provided with a deceleration impact part; the air curtain assembly comprises an air curtain and a first fixing plate, and the air curtain is arranged on one side, facing the impact piece to be tested, of the first fixing plate; the speed reduction assembly comprises a speed reduction part suitable for deformation, and the speed reduction part is positioned at the front end of the speed reduction impact part in the moving direction of the transmission part, wherein the speed reduction impact part is firstly contacted with the speed reduction part before the impact part to be tested is contacted with the air curtain.

According to the passenger head protection test device provided by the embodiment of the utility model, the passenger head protection test device provided by the embodiment is formed by arranging the impact piece to be tested, the driving assembly, the air curtain assembly, the speed reduction assembly and other components; by using the passenger head protection test device to perform the side head subsystem test, the test precision can be improved, the complex equipment required by the conventional side head subsystem test is simplified, the test efficiency is improved, the test equipment cost is saved, the test period is shortened, and the test adjustability is improved; the testing result obtained by testing the passenger head protection testing device of the embodiment has better guiding effect on the design, development and improvement perfection of the later propulsion side air curtain and the improvement of the protection performance of the side air curtain on the head of a passenger.

In addition, according to the utility model discloses a passenger's head protection test device can also have following additional technical characterstic:

in some embodiments, the transmission member is a transmission rod, one end of the transmission rod is in transmission connection with the driving member, and the other end of the transmission rod is provided with the impact member to be tested.

In some embodiments, a fixing seat is installed at the end of the transmission rod, the impact piece to be tested is installed on the fixing seat, and the impact piece to be tested comprises a dummy neck and a dummy head connected above the dummy neck.

In some embodiments, the deceleration assembly further includes a second fixing plate located between the driving member and the first fixing plate, the second fixing plate has a through hole, and the transmission rod is matched with the through hole, so that the deceleration impact portion and the impact member to be tested are located on two sides of the second fixing plate respectively.

In some embodiments, the speed reducer is mounted on a side of the second fixing plate facing the driving member.

In some embodiments, the decelerating element has a plurality of decelerating elements spaced apart from each other in a circumferential direction of the through hole, and the decelerating impact portion is a retainer ring extending in a radial direction of the transmission rod.

In some embodiments, the speed reduction is constructed from honeycomb aluminum.

In some embodiments, the air curtain assembly further comprises a side wall assembly, the side wall assembly comprises a side wall panel, a door trim panel and a B-pillar trim panel, the door trim panel and the B-pillar trim panel are mounted on the first fixing plate side by side, the side wall panel is located on one side of the door trim panel and the B-pillar trim panel away from the first fixing plate, the side wall panel, the door trim panel and the B-pillar trim panel form a mounting space, and the air curtain is located in the mounting space.

In some embodiments, the first fixing plate has a plurality of adapter interfaces thereon, and the adapter interfaces are adapted to be adapted to side wall assemblies of different models.

In some embodiments, the drive assembly further comprises: the transmission piece is arranged on the mounting seat; the guide assembly comprises a sliding rail and a sliding groove, the sliding rail is arranged on one of the mounting seat and the transmission piece, and the sliding groove is arranged on the other one of the mounting seat and the transmission piece.

Drawings

Fig. 1 is a front view of an occupant head protection test apparatus according to an embodiment of the present invention;

fig. 2 is a plan view of an occupant head protection test device according to an embodiment of the present invention.

Reference numerals are as follows:

100. an occupant head protection test device;

1. an impact piece to be tested; 11. a dummy head; 12. a dummy neck;

2. a drive assembly; 21. a drive member; 22. a transmission member; 201. a deceleration impact section; 202. a fixed seat;

3. an air curtain assembly; 31. an air curtain; 32. a first fixing plate; 33. a side wall assembly; 301. side coaming plates; 302. a door trim panel; 303. b column decorative plate;

4. a speed reduction assembly; 41. a speed reducer; 42. a second fixing plate; 401. and a through hole.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

First, an occupant head protection test device 100 according to an embodiment of the present invention is described with reference to fig. 1 to 2.

As shown in fig. 1 to 2, an occupant head protection test device 100 according to an embodiment of the present invention is used for being connected to an impact member 1 to be tested, and includes: the device comprises a driving assembly 2, an air curtain assembly 3 and a speed reducing assembly 4; the impact piece 1 to be tested is a head simulation piece of a passenger and is used for simulating the head of a passenger; the drive assembly 2 includes: the driving part 21 is in transmission connection with the transmission part 22, the impact part 1 to be tested is installed on the transmission part 22, and the transmission part 22 is provided with a deceleration impact part 201; the driving part 21 is used for providing driving force, the driving transmission part 22 is driven to move, the driving part 21 simulates an automobile engine and is used for providing acceleration, the transmission part 22 simulates a vehicle, the impact piece 1 to be tested is positioned in the vehicle, and when the driving part 21 provides power, the transmission part 22 drives the impact piece 1 to be tested to move, so that a scene that the vehicle drives passengers to move is simulated; the deceleration impact part 201 is used for simulating a part of the vehicle impacted by collision so as to realize a scene simulating the collision and deceleration of the vehicle. The air curtain assembly 3 includes: the air curtain 31 and the first fixing plate 32, wherein the air curtain 31 is installed on one side, facing the impact piece 1 to be measured, of the first fixing plate 32; the air curtain 31 is used for simulating a side air curtain on a vehicle and absorbing the impact of the impact piece 1 to be tested so as to protect the impact piece 1 to be tested.

Further, the reduction assembly 4 includes: the speed reducing part 41 is suitable for deformation, and in the moving direction of the transmission part 22, the speed reducing part 41 is positioned at the front end of the speed reducing impact part 201, wherein the speed reducing impact part 201 is firstly contacted with the speed reducing part 41 before the impact part 1 to be tested is contacted with the air curtain 31; the speed reducer 41 is used for simulating an object collided by the vehicle so as to realize a scene of simulating the speed reduction of the vehicle after collision;

in some embodiments, for example as shown in fig. 1, firstly the driving member 21 provides a driving force to drive the driving member 22 to move, and secondly the decelerating impact member on the driving member 22 impacts the decelerating member 41 to realize the overall deceleration of the driving member 22, so as to simulate the deceleration scene of a vehicle collision, the impact member 1 to be tested, which is arranged on the driving member 22, will continue to move forward due to the sudden deceleration of the impact member, so as to disengage from the driving member 22, contact with the air curtain 31, impact the air curtain 31, and complete the simulation test of impacting the side air curtain on the head of the passenger, so as to test the protection degree and protection capability of the side air curtain on the head of the passenger and the damage degree of the impact member 1 to be tested, and the design development and improvement of the propulsion side air curtain are perfected.

In the prior art, a subsystem dynamic sliding table is mostly used for carrying out a side head subsystem test, but the subsystem dynamic sliding table needs to be provided with a series of devices such as an integral dummy, a vehicle body environment part and the like, and the sliding table accelerating and decelerating device has huge cost and high cost; meanwhile, the system of the subsystem dynamic sliding table is complex, the number of devices is large, the calibration and prediction of high-precision head damage cannot be achieved, whether the protection of the tested side air curtain on the head reaches the safety standard cannot be accurately detected, the opposite side air curtain cannot be designed in an optimized mode, and the protection performance of the side air curtain on the head is improved; in addition, the time period for testing by using the subsystem dynamic sliding table is long, and the adjustability for setting the positions of the side air curtain, the dummy and the interior trim part in the test is low, so that the positions of the side air curtain, the dummy and the interior trim part cannot be adjusted correspondingly according to needs, therefore, the adjustability of the whole test system is reduced, and the obtained test result is not beneficial to the optimization design of the side air curtain in the later period.

According to the passenger head protection test device 100 of the embodiment of the present invention, the passenger head protection test device 100 of the present embodiment is formed by arranging the components such as the impact member 1 to be tested, the driving assembly 2, the air curtain assembly 3, and the deceleration assembly 4; by using the passenger head protection testing device 100 of the embodiment to perform the side head subsystem test, the testing precision can be improved, the complex equipment required by the conventional side head subsystem test is simplified, the testing efficiency is improved, the testing equipment cost is saved, the testing period is shortened, and the testing adjustability is improved; through the test result obtained by using the passenger head protection test device 100 of the embodiment, better guidance is provided for the design development and improvement perfection of the later propulsion side air curtain and the improvement of the protection performance of the side air curtain on the head of a passenger.

In an embodiment of the present invention, as shown in fig. 1 to fig. 2, the transmission member 22 is a transmission rod, one end of the transmission rod is in transmission connection with the driving member 21, and the other end is mounted with the impact member 1 to be tested. In this embodiment, the driving member 21 transmits the driving force to the transmission rod through the connection portion with the transmission rod, so that the transmission rod moves towards one end of the air curtain assembly 3, and the impact member 1 to be tested is disposed at the other end of the transmission connection end of the transmission rod and the driving member 21, so that when the transmission rod moves, the impact member 1 to be tested is driven to move towards one side of the air curtain assembly 3; the design simulates the process of automobile movement, simplifies the devices such as the whole automobile and the whole dummy required in the traditional test, reduces the test cost and improves the test efficiency.

In a specific embodiment of the present invention, as shown in fig. 1 to fig. 2, the fixing seat 202 can be installed at the end of the transmission rod, the impact piece 1 to be tested can be installed on the fixing seat 202, and the impact piece 1 to be tested can include: a dummy neck 12 and a dummy head 11 attached over the dummy neck 12. In the embodiment, the fixing seat 202 is arranged to simulate the trunk of a human body and is used for being connected with the impact piece 1 to be tested for simulating the head and the neck of the human body so as to simulate the effect of the whole dummy, and meanwhile, the fixing seat 202 is matched with the impact piece 1 to be tested so as to realize the test effect of the whole dummy, so that the test cost can be saved by adopting the fixing seat 202 and the impact piece 1 to be tested for testing; in addition, the fixing seat 202 and the impact piece 1 to be detected can be adjusted in position according to requirements, so that the device is suitable for detection tests of side air curtains and vehicle body structures of different styles.

In a specific embodiment of the present invention, as shown in fig. 1 to fig. 2, the deceleration assembly 4 may further include: and the second fixing plate 42, the second fixing plate 42 is positioned between the driving part 21 and the first fixing plate 32, the second fixing plate 42 is provided with a through hole 401, and the transmission rod is matched with the through hole 401, so that the deceleration impact part 201 and the impact piece 1 to be tested are respectively positioned at two sides of the second fixing plate 42. In some embodiments, such as shown in fig. 1, the second fixing plate 42 may be a rigid wall for mounting the speed reducer 41, providing support for the speed reducer 41, and bearing the impact of the speed reducing impact member on the transmission member 22; the through hole 401 of the second fixing plate 42 facilitates the transmission rod to pass through.

Further, the speed reducer 41 is mounted on the side of the second fixing plate 42 facing the driver 21. This arrangement facilitates the impact of the deceleration impact member on transmission member 22 with reduction member 41 to effect deceleration of transmission member 22.

In addition, the speed reducer 41 may have a plurality of speed reducers 41 arranged at intervals in the circumferential direction of the through hole 401, and the speed reduction striking portion 201 is a retainer ring extending in the radial direction of the drive rod. Set up reduction parts 41 along through-hole 401's circumference interval can be better slow down speed reduction impact portion 201, also can be better when receiving the impact of speed reduction impact portion 201 the energy that the impact produced, prevent that the speed reduction is uneven to lead to the transfer line to take place the skew, or with through-hole 401 edge on the second fixed plate 42 to take place the friction, cause the influence to the experiment, lead to experimental failure.

In one embodiment of the present invention, as shown in fig. 1 to 2, the speed reducer 41 is made of honeycomb aluminum. The honeycomb aluminum has low cost and good deceleration effect, and the deceleration performance of the honeycomb aluminum can well meet the test requirement.

In an embodiment of the present invention, as shown in fig. 1 to fig. 2, the air curtain assembly 3 may further include: side wall assembly 33, side wall assembly 33 includes: the side coaming 301, the door trim 302 and the B-pillar trim 303 are mounted on the first fixing plate 32 side by side, the side coaming 301 is located on the side of the door trim 302 and the B-pillar trim 303 far away from the first fixing plate 32, the installation space is constructed by the side coaming 301, the door trim 302 and the B-pillar trim 303, and the air curtain 31 is located in the installation space. In this embodiment, the air curtain assembly 3 is used for simulating the installation position of the side air curtain inside the vehicle and installing the surrounding vehicle accessories, so that the scene of the side air curtain after being impacted can be simulated as truly as possible in the test, and the protection degree of the side air curtain on the head of the passenger can be detected, and the air curtain assembly 3 can be adjusted according to the actual requirement due to the few components of the air curtain assembly 3, so as to test the required data result.

In a specific embodiment of the present invention, as shown in fig. 1 to fig. 2, the first fixing plate 32 may have a plurality of adapter interfaces thereon, and the plurality of adapter interfaces are adapted to be adapted to the side wall assemblies 33 of different models. Such design can be used for testing the side air curtain of the motorcycle type of different whole car structures, and this has increased experimental variety, and the convenience has reduced experimental cost.

In an embodiment of the present invention, as shown in fig. 1 to 2, the driving assembly 2 may further include: a mounting seat and a guide assembly; the transmission piece 22 is arranged on the mounting seat; the guide assembly includes: a slide rail on one of the mounting base and the transmission member 22 and a slide groove on the other of the mounting base and the transmission member 22. That is, there may be a slide rail on the mounting seat and a sliding groove on the transmission member 22, or there may be a sliding groove on the mounting seat and a slide rail on the transmission member 22; through the cooperation of slide rail and spout, driving medium 22 can move along the direction of slide rail or spout, can not take place the skew, is favorable to experimental stability to go on.

An occupant head protection test apparatus 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 2.

Specifically, as shown in fig. 1 to 2, an occupant head protection test apparatus 100 for connection with an impact member 1 to be tested includes: the device comprises a driving assembly 2, an air curtain assembly 3 and a speed reducing assembly 4; in this embodiment, the driving assembly 2 includes a driving member 21 and a transmission member 22, the driving member 21 is connected to the transmission member 22 in a driving manner, the impact member 1 to be tested is mounted on the transmission member 22, and the transmission member 22 has a deceleration impact portion 201; the air curtain assembly 3 comprises an air curtain 31 and a first fixing plate 32, wherein the air curtain 31 is installed on one side, facing the impact piece 1 to be tested, of the first fixing plate 32; the deceleration assembly 4 comprises a deceleration part 41 suitable for deformation, and the deceleration part 41 is positioned at the front end of the deceleration impact part 201 in the moving direction of the transmission part 22, wherein the deceleration impact part 201 contacts with the deceleration part 41 before the impact part 1 to be tested contacts with the air curtain 31.

Furthermore, the transmission part 22 is a transmission rod, one end of the transmission rod is in transmission connection with the driving part 21, and the other end of the transmission rod is provided with the impact piece 1 to be tested; the end part of the transmission rod is provided with a fixed seat 202, the impact piece 1 to be tested is arranged on the fixed seat 202, and the impact piece 1 to be tested comprises a dummy neck part 12 and a dummy head part 11 connected above the dummy neck part 12; the deceleration assembly 4 further comprises a second fixing plate 42, the second fixing plate 42 is located between the driving member 21 and the first fixing plate 32, the second fixing plate 42 is provided with a through hole 401, and the transmission rod is matched with the through hole 401, so that the deceleration impact part 201 and the impact member 1 to be tested are respectively located on two sides of the second fixing plate 42; the speed reducer 41 is arranged on the side surface of the second fixing plate 42 facing the driving part 21; the speed reducing member 41 has a plurality of speed reducing members 41 arranged at intervals in the circumferential direction of the through hole 401, and the speed reducing impact portion 201 is a retainer ring extending in the radial direction of the transmission rod.

In addition, the speed reducer 41 is made of honeycomb aluminum; the air curtain assembly 3 further comprises a side wall assembly 33, the side wall assembly 33 comprises a side wall board 301, a door trim board 302 and a B-pillar trim board 303, the door trim board 302 and the B-pillar trim board 303 are mounted on the first fixing plate 32 side by side, the side wall board 301 is located on one side, away from the first fixing plate 32, of the door trim board 302 and the B-pillar trim board 303, a mounting space is formed by the side wall board 301, the door trim board 302 and the B-pillar trim board 303, and the air curtain 31 is located in the mounting space; the first fixing plate 32 is provided with a plurality of adapting interfaces which are suitable for adapting to side wall assemblies 33 of different types; the drive assembly 2 further comprises: a mounting seat and a guide assembly; the transmission piece 22 is arranged on the mounting seat; the guide assembly comprises a slide track and a slide slot, the slide track being located on one of the mounting seat and the drive member 22 and the slide slot being located on the other of the mounting seat and the drive member 22.

According to the passenger head protection testing device 100 of the embodiment of the present invention, the passenger head protection testing device 100 of the embodiment is formed by arranging the components such as the impact piece 1 to be tested, the driving assembly 2, the air curtain assembly 3 and the deceleration assembly 4; by using the passenger head protection testing device 100 of the embodiment to perform the side head subsystem test, the testing precision can be improved, the complex equipment required by the conventional side head subsystem test is simplified, the testing efficiency is improved, the testing equipment cost is saved, the testing period is shortened, and the testing adjustability is improved; through the test result obtained by using the passenger head protection test device 100 of the embodiment, the design development and improvement of the later-stage propelling side air curtain are perfected, and the protection performance of the side air curtain on the head of a passenger is improved.

Other configurations and operations of the occupant head protection test device 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A passenger head protection test device is used for being connected with an impact piece to be tested and is characterized by comprising:

the driving assembly comprises a driving part and a transmission part, the driving part is in transmission connection with the transmission part, the impact part to be tested is arranged on the transmission part, and the transmission part is provided with a deceleration impact part;

the air curtain assembly comprises an air curtain and a first fixing plate, and the air curtain is arranged on one side, facing the impact piece to be tested, of the first fixing plate;

the speed reduction assembly comprises a speed reduction part suitable for deformation, wherein the speed reduction part is located at the front end of the speed reduction impact part in the moving direction of the transmission part, the impact part to be tested is in contact with the air curtain before the speed reduction impact part is in contact with the speed reduction part.

2. The occupant head protection test device according to claim 1, wherein said transmission member is a transmission rod, one end of said transmission rod is in transmission connection with said driving member, and the other end is mounted with said impact member to be tested.

3. The occupant head protection test device according to claim 2, wherein a fixing seat is installed at an end of the transmission rod, and the impact member to be tested is installed on the fixing seat, and the impact member to be tested includes a dummy neck and a dummy head connected above the dummy neck.

4. The occupant head protection test device according to claim 2, wherein the deceleration assembly further comprises a second fixing plate located between the driving member and the first fixing plate, the second fixing plate having a through hole, and the transmission rod is engaged with the through hole so that the deceleration impact portion and the impact member to be tested are located on both sides of the second fixing plate, respectively.

5. The occupant head protection test device according to claim 4, wherein said speed reducer is mounted on a side of said second fixing plate facing said driving member.

6. The occupant head protection test device according to claim 4, wherein said speed reducer has a plurality of speed reducers arranged at intervals in a circumferential direction of said through hole, and said deceleration impact portion is a retainer ring extending in a radial direction of said transmission rod.

7. The occupant head protection test device according to any one of claims 1 to 6, wherein said decelerating member is composed of honeycomb aluminum.

8. The occupant head protection test device according to claim 1, wherein said air curtain assembly further comprises a side wall assembly, said side wall assembly comprises a side wall panel, a door trim panel and a B-pillar trim panel, said door trim panel and said B-pillar trim panel are mounted side by side on said first fixing plate, said side wall panel is located on a side of said door trim panel and said B-pillar trim panel away from said first fixing plate, and said side wall panel, said door trim panel and said B-pillar trim panel form an installation space, said air curtain is located in said installation space.

9. The occupant head protection test device according to claim 8, wherein the first fixing plate has a plurality of adapter interfaces thereon, and the plurality of adapter interfaces are adapted to be adapted to side wall assemblies of different models.

10. The occupant head protection test device of claim 1, wherein said drive assembly further comprises:

the transmission piece is arranged on the mounting seat;

the guide assembly comprises a sliding rail and a sliding groove, the sliding rail is arranged on one of the mounting seat and the transmission piece, and the sliding groove is arranged on the other of the mounting seat and the transmission piece.

Images