CN220465361U - Vehicle-mounted baby observation mirror - Google Patents

Abstract

The utility model discloses a vehicle-mounted baby observation mirror which comprises a vehicle-mounted rear pillow support and a mirror main body, wherein two clamping elements used for clamping a rear pillow support rod of an automobile are arranged at one end of the vehicle-mounted rear pillow support, the distance between the two clamping elements is adjustable, a connecting element used for connecting the mirror main body is arranged at the other end of the vehicle-mounted rear pillow support, the mirror main body comprises a mirror frame and a convex mirror, a butt joint element matched with the connecting element is arranged at one end, close to the connecting element, of the mirror frame, the butt joint element is connected with the connecting element, and the convex mirror is arranged at the other end, far away from the connecting element, of the mirror frame. The mirror main body is installed on the vehicle-mounted rear pillow support through the matching of the butt joint element and the connecting element, so that the mirror main body is more stable in the running process of a vehicle, is not easy to shake, is further beneficial to the observation of a driver, is not easy to damage a rear pillow, and is convenient to use.

Description

Vehicle-mounted baby observation mirror

Technical Field

The utility model relates to the technical field of mirrors, in particular to a vehicle-mounted baby observation mirror.

Background

The child safety seat is installed, and the child safety seat is a restraining device for the child, which is equivalent to the function of fastening a safety belt for an adult; the four stages of the child restraint system are as follows: 1. the first stage: (reverse child safety seat) infant 1 year old and under (weight 0-13 kg), use the child car safety seat installed in reverse; 2. and a second stage: (Forward child safety seat) a child 1-4 years old (weight 9-18 kg) should be replaced with a Forward child seat; 3. and a third stage: (with or without a back booster seat) a child aged 4-12 years (weight 15-36 kg, height 145 cm or less) needs to use the booster seat; 4. fourth stage: (adult safety belt) adult safety belts are used by children over 12 years old (weight 36 kg or more, height 145 cm or more).

In the second, third and fourth stages, the driver can observe the riding condition of the child through the rearview mirror in the vehicle, and in the first stage, the driver can observe the riding condition of the infant because the child safety seat is reversely installed, the driver has to return frequently, the driver can easily be distracted, and the potential traffic hazard is extremely large.

Among the prior art, there is on-vehicle baby's mirror, and it is including the bandage and set up the convex mirror structure on the bandage, and the design driver of this kind of structure can observe infant's riding condition through the interior rear-view mirror reflection convex mirror structure, but the setting of bandage can lead to the vehicle to frequently shake in the in-process convex mirror structure of going, is unfavorable for observing, and binds easily to cause the back pillow to warp sunkenly for a long time.

Therefore, a new solution is needed to solve the above problems.

Disclosure of Invention

In view of the above, the present utility model aims at overcoming the drawbacks of the prior art, and its main objective is to provide a vehicle-mounted baby observation mirror, which is provided with two clamping elements with adjustable intervals, and is adaptable to automobile rear pillow struts with different width dimensions, and the vehicle-mounted rear pillow support can be stably mounted on the automobile rear pillow struts through the two clamping elements, and the mirror main body is mounted on the vehicle-mounted rear pillow support through the cooperation of the docking element and the connecting element, so that the mirror main body is more stable in the driving process of the vehicle, is not easy to shake, is further beneficial to the observation of a driver, is not easy to damage the rear pillow, and is convenient to use.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a on-vehicle baby's sight glass, includes on-vehicle back pillow support and mirror main part, the one end of on-vehicle back pillow support is equipped with two clamping elements that are used for centre gripping car back pillow branch, and the interval between two clamping elements is adjustable to be set up, the other end of on-vehicle back pillow support is equipped with the connecting element that supplies the mirror main part to be connected, the mirror main part includes picture frame and convex mirror, the one end that is close to connecting element of picture frame is equipped with connecting element assorted docking element, docking element connect in connecting element, convex mirror locates the picture frame keep away from connecting element's the other end, can be with the firm installation of on-vehicle back pillow branch of on-vehicle back pillow support through two clamping elements for the vehicle is more stable in the in-process of traveling mirror main part, and is difficult for the observation of driver, and is difficult for causing harm to the back pillow, convenient to use.

As a preferred scheme, the picture frame includes framework and cavity frame lid, the framework is equipped with the cavity, the cavity keep away from connecting element's one end is uncovered to be set up, the convex mirror covers the uncovered of cavity, the butt joint component set up in the framework be close to connecting element's one end, the cavity frame lid is fixed in the other end of framework, and will the convex mirror is fixed in the framework with between the cavity frame lid, the convex mirror exposes in the middle window of cavity frame lid.

As a preferable mode, the abutting element is located at the middle part of the mirror frame in the length direction and is arranged close to the bottom of the mirror frame in the width direction, and the abutting element is eccentrically arranged, so that the adjustment amplitude of the mirror frame in the width direction can be increased.

As a preferable scheme, one end of the mirror frame, which is close to the connecting element, is convexly provided with a boss, the butt joint element is arranged on the boss, the butt joint element is a ball head mounting seat, and the connecting element is a universal ball head.

As a preferable scheme, one end of the mirror frame, which is close to the connecting element, is convexly provided with a rotation installation position, one end of the abutting element, which is close to the mirror frame, is rotationally connected with the rotation installation position, the other end of the abutting element is rotationally connected with the connecting element, and the rotation axis of the abutting element and the rotation installation position is perpendicular to the rotation axis of the abutting element and the connecting element.

As a preferred scheme, on-vehicle back pillow support includes first support arm and second support arm, first support arm, second support arm all have grafting end and backstop end, the grafting end articulated in connecting element, backstop end integrated into one piece is on corresponding first support arm, second support arm, clamping element is from the grafting end slidable install on corresponding first support arm and second support arm, so that clamping element can make a round trip movement between backstop end and connecting element.

As a preferable scheme, the vehicle-mounted rear pillow support comprises a fixed seat, two clamping elements are arranged on one side of the fixed seat, a sliding groove is formed in the other side of the fixed seat, a first hinging seat and a second hinging seat are arranged in the sliding groove, and at least one of the first hinging seat and the second hinging seat is movably arranged in the sliding groove so as to adjust the interval between the first hinging seat and the second hinging seat;

the connecting element is hinged with a first connecting arm and a second connecting arm respectively, a limiting part for preventing the first connecting arm and the second connecting arm from being parallel is arranged between the first connecting arm and the second connecting arm, and the other ends of the first connecting arm and the second connecting arm are hinged with a first hinging seat and a second hinging seat respectively.

As a preferable scheme, the vehicle-mounted rear pillow bracket comprises a cross rod, wherein the cross rod comprises a first supporting rod and a second supporting rod which is arranged on the first supporting rod in an elastically telescopic manner, and the two clamping elements are respectively arranged at one end, away from each other, of the first supporting rod and the second supporting rod;

the connecting element is fixedly arranged on the first supporting rod;

or, one end of the connecting element far away from the butt joint element is rotatably connected with a folding rod, a containing cavity for containing the connecting element is concavely arranged on the inner side of the folding rod, the connecting element is rotatably and detachably matched with the containing cavity, and one end of the folding rod far away from the connecting element is rotatably connected with the clamping element of the first supporting rod.

As a preferable scheme, the vehicle-mounted rear pillow support comprises an elastic sheet body, two clamping elements are arranged at two ends of the elastic sheet body, and one end, far away from the butt joint element, of the connecting element is fixedly arranged in the middle of the elastic sheet body.

As a preferable scheme, the vehicle-mounted rear pillow bracket comprises a fixed rod and a third connecting arm, the clamping element comprises a first sleeving part and a clamping part connected with the first sleeving part, the first sleeving part is sleeved on the periphery of the fixed rod, and at least one first sleeving part can slide along the extending direction of the fixed rod;

one end of the third connecting arm is rotationally connected with a mounting seat, one end of the mounting seat, which is far away from the third connecting arm, is provided with a second sleeving part, the second sleeving part is sleeved on the periphery of the fixed rod, and the clamping element is rotationally connected with the other end of the third connecting arm;

the one end in dead lever extending direction is equipped with the backstop portion, the second cover is established the portion and is fixed in the other end in dead lever extending direction, first cover is established the portion activity and is limited by between the backstop portion with the second cover is established the portion.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, and in particular, the technical scheme can be as follows:

the automobile rear pillow support is mainly characterized in that two clamping elements with adjustable intervals are arranged, the automobile rear pillow support can be adapted to automobile rear pillow supports with different width sizes, the automobile rear pillow supports can be stably arranged on the automobile rear pillow supports through the two clamping elements, the mirror main body is arranged on the automobile rear pillow supports through the matching of the butt joint elements and the connecting elements, the mirror main body is more stable in the running process of a vehicle, the mirror main body is not easy to shake, the observation of a driver is facilitated, damage to the rear pillow is not easy to cause, and the automobile rear pillow support is convenient to use.

In order to more clearly illustrate the structural features and efficacy of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic perspective view of a first preferred embodiment of the present utility model;

FIG. 2 is an exploded view of a first preferred embodiment of the present utility model;

FIG. 3 is a perspective view of another view of the preferred embodiment of the present utility model;

FIG. 4 is a schematic perspective view of a second preferred embodiment of the present utility model;

FIG. 5 is a perspective view of a third preferred embodiment of the present utility model;

FIG. 6 is a perspective view of a third preferred embodiment of the present utility model from another perspective;

FIG. 7 is a schematic diagram of the use of a third preferred embodiment of the present utility model;

FIG. 8 is a perspective view of a fourth preferred embodiment of the present utility model;

FIG. 9 is a schematic perspective view of a fifth preferred embodiment of the present utility model;

FIG. 10 is a perspective view of a sixth preferred embodiment of the present utility model;

FIG. 11 is a schematic perspective view of a seventh preferred embodiment of the present utility model.

The attached drawings are used for identifying and describing:

10. vehicle-mounted rear pillow bracket 11 and first support arm

12. Second supporting arm 13 and fixing seat

131. Sliding groove 14, first hinge seat

15. Second hinge base 16, cross bar

161. First strut 162, second strut

17. Elastic sheet 18, fixing rod

181. Stop 19, third connecting arm

191. Mounting seat 192, second fitting portion

101. Plug end 102, stop end

20. Mirror body 21 and mirror frame

211. Frame 212 and hollow frame cover

213. Cavity 214, boss

215. Rotation mounting position 22, convex mirror

23. Docking element 30, clamping element

31. First fitting portion 32, clamping portion

301. Clamping space 302, bayonet

40. Connecting element 41, first connecting arm

42. Second connecting arm 43 and limiting part

44. Folding bar 50, car rear pillow strut.

Detailed Description

First, it should be noted that, in the description of the present utility model, the azimuth or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

Embodiment one:

referring to fig. 1 to 3, a specific structure of a first preferred embodiment of the present utility model is shown, which includes a vehicle-mounted rear pillow bracket 10 and a mirror main body 20.

The on-vehicle back pillow support 10's one end is equipped with two clamping elements 30 that are used for centre gripping car back pillow branch 50, and the interval between two clamping elements 30 is adjustable to be set up, on-vehicle back pillow support 10's the other end is equipped with the connecting element 40 that supplies mirror main part 20 to connect, mirror main part 20 includes picture frame 21 and convex mirror 22, the one end that is close to connecting element 40 of picture frame 21 is equipped with connecting element 40 assorted docking element 23, docking element 23 connect in connecting element 40, convex mirror 22 locates the picture frame 21 keep away from the other end of connecting element 40, can be with on-vehicle back pillow branch 50 of firm installation of back pillow support 10 through two clamping elements 30 for the vehicle is more stable in the in-process of traveling mirror main part 20, and difficult shake, and then does benefit to the observation of driver, and is difficult for causing harm to the back pillow, convenient to use.

Referring to fig. 2 and 3, the mirror frame 21 includes a frame 211 and a hollow frame cover 212, the frame 211 is provided with a cavity 213, one end of the cavity 213 away from the connecting element 40 is opened, the convex mirror 22 covers the opening of the cavity 213, the docking element 23 is disposed at one end of the frame 211 near the connecting element 40, the hollow frame cover 212 is fixed at the other end of the frame 211, the convex mirror 22 is fixed between the frame 211 and the hollow frame cover 212, the convex mirror 22 is exposed at the middle window of the hollow frame cover 212, and the hollow frame cover 212 is fastened to the frame 211 by a screw, so that the convex mirror 22 is sandwiched between the frame 211 and the hollow frame cover 212; the clamping element 30 is an elastic clamp, and the elastic clamp is provided with a clamping space 301 and a bayonet 302 for allowing the automobile rear pillow strut 50 to enter the clamping space 301, when the automobile rear pillow strut 50 passes through the bayonet 302, the bayonet 302 is enlarged and then enters the clamping space 301, and after the automobile rear pillow strut 50 enters the clamping space 301, the bayonet 302 is restored so as to prevent the automobile rear pillow strut 50 from falling out of the clamping space 301 from the bayonet 302;

preferably, the abutting element 23 is located at the middle part of the frame 21 in the length direction and is disposed near the bottom of the frame 21 in the width direction, and the abutting element 23 is disposed eccentrically, so that the width-adjustable width of the frame 21 is larger than that of the center.

Referring to fig. 3, in the first embodiment, the vehicle-mounted rear pillow bracket 10 includes a first support arm 11 and a second support arm 12, the first support arm 11 and the second support arm 12 each have a plugging end 101 and a stopping end 102, the plugging ends 101 are hinged to the connecting element 40, the stopping ends 102 are integrally formed on the corresponding first support arm 11 and second support arm 12, and the clamping element 30 is slidably mounted on the corresponding first support arm 11 and second support arm 12 from the plugging ends 101, so that the clamping element 30 can move back and forth between the stopping ends 102 and the connecting element 40;

the convex boss 214 that is equipped with of one end that is close to connecting element 40 of picture frame 21, docking element 23 sets up on boss 214, docking element 23 is the bulb mount pad, connecting element 40 is the universal bulb, boss 214, docking element 23 and framework 211 integrated into one piece setting.

Embodiment two:

referring to fig. 4, a specific structure of a second preferred embodiment of the present utility model is shown, which is substantially the same as the first preferred embodiment, except that:

in the second embodiment, a rotation mounting position 215 is protruding from one end of the mirror frame 21 near the connecting element 40, one end of the docking element 23 near the mirror frame 21 is rotatably connected to the rotation mounting position 215, the other end of the docking element 23 is rotatably connected to the connecting element 40, and the rotation axis of the docking element 23 and the rotation mounting position 215 is perpendicular to the rotation axis of the docking element 23 and the connecting element 40.

Embodiment III:

referring to fig. 5-7, a third preferred embodiment of the present utility model is shown, which is substantially the same as the first embodiment except that:

in the third embodiment, the vehicle-mounted rear pillow bracket 10 includes a fixed seat 13, two clamping elements 30 are disposed on one side of the fixed seat 13, a sliding groove 131 is disposed on the other side of the fixed seat 13, a first hinge seat 14 and a second hinge seat 15 are disposed in the sliding groove 131, and at least one of the first hinge seat 14 and the second hinge seat 15 is movably disposed in the sliding groove 131 to adjust a distance between the first hinge seat 14 and the second hinge seat 15;

the connecting element 40 is respectively hinged with a first connecting arm 41 and a second connecting arm 42, a limiting part 43 for preventing the first connecting arm 41 and the second connecting arm 42 from being parallel is arranged between the first connecting arm 41 and the second connecting arm 42 of the connecting element 40, and the other ends of the first connecting arm 41 and the second connecting arm 42 are respectively hinged with the first hinging seat 14 and the second hinging seat 15;

in the third embodiment, the clamping element 30 is only provided with a bayonet 302, the two bayonets 302 deviate from each other, a driving spring for driving the two bayonets 302 to deviate from each other is disposed between the two bayonets 302, the two bayonets 302 clamp the rear headrest strut 50 of the automobile through the elastic force of the driving spring, in some embodiments, the clamping element 30 is also the clamping element 30 shown in the first embodiment, and the two clamping elements 30 are slidably disposed on one side of the fixing seat 13 through a sliding seat.

Embodiment four:

referring to fig. 8, a fourth embodiment of the present utility model is shown, which is substantially the same as the first embodiment except that:

in the fourth embodiment, the vehicle-mounted rear pillow bracket 10 includes a cross bar 16, the cross bar 16 includes a first support bar 161 and a second support bar 162 that is elastically and telescopically mounted on the first support bar 161, and the two clamping elements 30 are respectively disposed at one ends of the first support bar 161 and the second support bar 162 that are away from each other;

the connecting element 40 is fixedly arranged on the first supporting rod 161;

in the fourth embodiment, the clamping element 30 is only provided with the bayonets 302, the two bayonets 302 are away from each other, and the two bayonets 302 clamp the rear headrest strut 50 of the automobile through the elastic force of the elastically telescopic second strut 162.

Fifth embodiment:

referring to fig. 9, a fifth embodiment of the present utility model is shown, which is substantially the same as the fourth embodiment except that:

in the fifth embodiment, a folding rod 44 is rotatably connected to an end of the connecting element 40 away from the docking element 23, a receiving cavity (not shown in the drawing) for receiving the connecting element 40 is concavely formed inside the folding rod 44, the connecting element 40 is rotatably and detachably matched with the receiving cavity, and an end of the folding rod 44 away from the connecting element 40 is rotatably connected to the clamping element 30 of the first strut 161.

Example six:

referring to fig. 10, a sixth embodiment of the present utility model is shown, which is substantially the same as the first embodiment except that:

in the sixth embodiment, the vehicle-mounted rear pillow bracket 10 includes an elastic sheet 17, two clamping elements 30 are disposed at two ends of the elastic sheet 17, one end of the connecting element 40, which is far away from the docking element 23, is fixedly disposed in the middle of the elastic sheet 17, and the clamping elements 30 and the elastic sheet 17 are integrally formed, so that the distance between the two clamping elements 30 can be adjusted by bending the elastic sheet 17 when in use.

Embodiment seven:

referring to fig. 11, a seventh embodiment of the present utility model is shown, which is substantially the same as the first embodiment except that:

in the seventh embodiment, the vehicle-mounted rear pillow bracket 10 includes a fixing rod 18 and a third connecting arm 19, the clamping element 30 includes a first sleeved portion 31 and a clamping portion 32 connected to the first sleeved portion 31, the clamping portion 32 has the clamping space 301 and a bayonet 302, the first sleeved portion 31 is sleeved on the periphery of the fixing rod 18, and at least one first sleeved portion 31 can slide along the extending direction of the fixing rod 18;

one end of the third connecting arm 19 is rotatably connected with a mounting seat 191, one end of the mounting seat 191 away from the third connecting arm 19 is provided with a second sleeving part 192, the second sleeving part 192 is sleeved on the periphery of the fixed rod 18, and the clamping element 30 is rotatably connected with the other end of the third connecting arm 19;

the fixing rod 18 has a stop portion 181 at one end in the extending direction, the second sleeving portion 192 is fixed at the other end in the extending direction of the fixing rod 18, and the first sleeving portion 31 is limited between the stop portion 181 and the second sleeving portion 192.

The design focus of the utility model is that:

the automobile rear pillow support is mainly characterized in that two clamping elements with adjustable intervals are arranged, the automobile rear pillow support can be adapted to automobile rear pillow supports with different width sizes, the automobile rear pillow supports can be stably arranged on the automobile rear pillow supports through the two clamping elements, the mirror main body is arranged on the automobile rear pillow supports through the matching of the butt joint elements and the connecting elements, the mirror main body is more stable in the running process of a vehicle, the mirror main body is not easy to shake, the observation of a driver is facilitated, damage to the rear pillow is not easy to cause, and the automobile rear pillow support is convenient to use.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model are still within the scope of the technical solutions of the present utility model.

Claims (10)

1. The utility model provides a on-vehicle baby viewer which characterized in that: including on-vehicle back pillow support and mirror main part, on-vehicle back pillow support's one end is equipped with two clamping elements that are used for centre gripping car back pillow branch, and the interval between two clamping elements is adjustable to be set up, on-vehicle back pillow support's the other end is equipped with the connecting element that supplies the mirror main part to connect, the mirror main part includes picture frame and convex mirror, the one end that is close to connecting element of picture frame is equipped with connecting element assorted docking element, docking element connect in connecting element, convex mirror locates the picture frame keep away from connecting element's the other end.

2. The vehicle-mounted baby viewer as claimed in claim 1, wherein: the glasses frame comprises a frame body and a hollow frame cover, wherein the frame body is provided with a cavity, one end, far away from the connecting element, of the cavity is opened, the convex mirror covers the opening of the cavity, the butt joint element is arranged at one end, close to the connecting element, of the frame body, the hollow frame cover is fixed at the other end of the frame body, and the convex mirror is fixed between the frame body and the hollow frame cover, and the convex mirror is exposed out of a middle window of the hollow frame cover.

3. The vehicle-mounted baby viewer as claimed in claim 1, wherein: the butt joint element is located in the middle of the mirror frame in the length direction and is arranged close to the bottom of the mirror frame in the width direction.

4. The vehicle-mounted baby viewer as claimed in claim 1, wherein: the convex boss that is equipped with of one end that is close to connecting element of picture frame, the butt joint component sets up on the boss, the butt joint component is the bulb mount pad, connecting element is universal bulb.

5. The vehicle-mounted baby viewer as claimed in claim 1, wherein: the one end that is close to connecting element of picture frame protruding be equipped with and rotate the installation position, the butt joint component be close to the one end of picture frame rotate connect in rotate the installation position, the other end of butt joint component rotate connect in connecting element, the butt joint component with the rotation axis at rotation installation position place is perpendicular to the butt joint component with the rotation axis at connecting element place.

6. The vehicle-mounted baby viewer as claimed in claim 1, wherein: the vehicle-mounted rear pillow support comprises a first support arm and a second support arm, wherein the first support arm and the second support arm are respectively provided with a plug end and a stop end, the plug ends are hinged to the connecting element, the stop ends are integrally formed on the corresponding first support arm and the second support arm, and the clamping element is slidably arranged on the corresponding first support arm and the second support arm from the plug ends, so that the clamping element can move back and forth between the stop ends and the connecting element.

7. The vehicle-mounted baby viewer as claimed in claim 1, wherein: the vehicle-mounted rear pillow support comprises a fixed seat, two clamping elements are arranged on one side of the fixed seat, a sliding groove is formed in the other side of the fixed seat, a first hinging seat and a second hinging seat are arranged in the sliding groove, and at least one of the first hinging seat and the second hinging seat is movably arranged in the sliding groove so as to adjust the distance between the first hinging seat and the second hinging seat;

the connecting element is hinged with a first connecting arm and a second connecting arm respectively, a limiting part for preventing the first connecting arm and the second connecting arm from being parallel is arranged between the first connecting arm and the second connecting arm, and the other ends of the first connecting arm and the second connecting arm are hinged with a first hinging seat and a second hinging seat respectively.

8. The vehicle-mounted baby viewer as claimed in claim 1, wherein: the vehicle-mounted rear pillow support comprises a cross rod, wherein the cross rod comprises a first supporting rod and a second supporting rod which is arranged on the first supporting rod in an elastically telescopic mode, and the two clamping elements are respectively arranged at one end, away from each other, of the first supporting rod and one end, away from each other, of the second supporting rod;

the connecting element is fixedly arranged on the first supporting rod;

or, one end of the connecting element far away from the butt joint element is rotatably connected with a folding rod, a containing cavity for containing the connecting element is concavely arranged on the inner side of the folding rod, the connecting element is rotatably and detachably matched with the containing cavity, and one end of the folding rod far away from the connecting element is rotatably connected with the clamping element of the first supporting rod.

9. The vehicle-mounted baby viewer as claimed in claim 1, wherein: the vehicle-mounted rear pillow support comprises an elastic sheet body, two clamping elements are arranged at two ends of the elastic sheet body, and one end, far away from the butt joint element, of the connecting element is fixedly arranged in the middle of the elastic sheet body.

10. The vehicle-mounted baby viewer as claimed in claim 1, wherein: the vehicle-mounted rear pillow support comprises a fixed rod and a third connecting arm, the clamping element comprises a first sleeving part and a clamping part connected with the first sleeving part, the first sleeving part is sleeved on the periphery of the fixed rod, and at least one first sleeving part can slide along the extending direction of the fixed rod;

one end of the third connecting arm is rotationally connected with a mounting seat, one end of the mounting seat, which is far away from the third connecting arm, is provided with a second sleeving part, the second sleeving part is sleeved on the periphery of the fixed rod, and the clamping element is rotationally connected with the other end of the third connecting arm;

the one end in dead lever extending direction is equipped with the backstop portion, the second cover is established the portion and is fixed in the other end in dead lever extending direction, first cover is established the portion activity and is limited by between the backstop portion with the second cover is established the portion.