CN216649740U

CN216649740U - Strengthen on-vehicle cell phone stand of clamping performance

Info

Publication number: CN216649740U
Application number: CN202220309165.7U
Authority: CN
Inventors: 夏芳针
Original assignee: Shenzhen Baitong Times Technology Co ltd
Current assignee: Shenzhen Baitong Times Technology Co ltd
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-05-31
Anticipated expiration: 2032-02-16

Abstract

The utility model discloses a vehicle-mounted mobile phone support for enhancing clamping performance, which comprises a shell; the mobile phone clamping device comprises a first clamping arm, a second clamping arm and a transmission device, wherein the first clamping arm and the second clamping arm are used for clamping a mobile phone, the transmission device is used for driving the first clamping arm and the second clamping arm to simultaneously open or retract; the part, accommodated in the shell, of the first clamping arm and the part, accommodated in the shell, of the second clamping arm are movably connected to the joint piece to form an engagement part, the transmission device is far away from the engagement part and is provided with a gear unit, and the transmission arm extends towards the gear unit and is in engagement connection with the gear unit; the transmission device is far away from the meshing part and is arranged, the transmission arm extends to the transmission device through the meshing part and is meshed and connected, the transmission arm can be regarded as a force arm and acts on the meshing part, so that acting force received by the meshing part is strengthened, and the clamping performance is strengthened.

Description

Strengthen on-vehicle cell phone stand of clamping performance

Technical Field

The utility model discloses the cell phone stand field specifically is a strengthen on-vehicle cell phone stand of clamping performance.

Background

With the popularization of domestic automobiles in China, only the rapid development of mobile phones can be realized, and the vehicle-mounted mobile phone support comes into play; the vehicle-mounted mobile phone support is compliant with the wave of rapid development of science and technology, and the expanded functionality is gradually increased, for example, clamping and clamping by adding motor transmission in the vehicle-mounted mobile phone support or adding a wireless charging module to support wireless charging of a mobile phone.

The existing mobile phone support comprises a shell and clamping arms extending from the inside of the shell to the two sides of the outside, wherein gear tooth structures are respectively arranged on the parts, located in the shell, of the clamping arms, the gear tooth structures are jointly meshed with a transmission gear of a motor device, and are driven by a motor, and the gear tooth structures drive the gear tooth structures to reduce the relative distance between the clamping arms so as to clamp a mobile phone; consumer presents the growing trend to the cell-phone performance, the jumbo size hand is because of carrying on more functional hardware equipment deeply receiving consumer's favor, it is corresponding, the volume increase of cell-phone, holistic rising also can appear in weight, can't guarantee the road surface planarization and then can't avoid appearing the automobile body shake at the in-process of traveling of car, the higher challenge is proposed to the clamping performance of on-vehicle cell phone stand, present under the bulky state at the smart mobile phone, traditional on-vehicle cell phone stand is difficult to effectively carry out firm centre gripping with the cell-phone, therefore, need a neotype on-vehicle cell phone stand carry out stable clamp to the cell-phone of current trend urgently, with the problem that appears in solving now.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a vehicle-mounted mobile phone support with enhanced clamping performance, which comprises a shell, a first clamping arm and a second clamping arm, wherein the first clamping arm and the second clamping arm are accommodated in the shell, the first clamping arm and the second clamping arm are connected together and connected with a connecting piece, a transmission arm is added in the second clamping arm and extends to a transmission device for meshing, when the transmission device is electrified for driving, the transmission arm can be regarded as torque and acts on a meshing part formed by the first clamping arm and the second clamping arm, so that the clamping performance is enhanced, and the problems in the prior art are solved.

In order to achieve the above object, the present invention provides a vehicle-mounted mobile phone holder with enhanced clamping performance, comprising a housing; the mobile phone clamping device comprises a first clamping arm, a second clamping arm and a transmission device, wherein the first clamping arm and the second clamping arm are used for clamping a mobile phone, the transmission device is used for driving the first clamping arm and the second clamping arm to simultaneously open or retract; the clamping device also comprises a connecting piece, wherein the connecting piece is accommodated in the shell, and the parts of the first clamping arm and the second clamping arm accommodated in the shell are respectively movably connected to the connecting piece; a first connecting arm is arranged at one end of the first clamping arm connected with the connecting piece, the first connecting arm is provided with first fan-shaped teeth, a second connecting arm and a transmission arm are arranged at one end of the second clamping arm connected with the connecting piece, and the second connecting arm is connected with the first connecting arm in a meshing manner through the first fan-shaped teeth to form a meshing part; the transmission device is far away from the meshing part and is provided with a gear unit, and the transmission arm extends towards the gear unit and is in meshing connection with the gear unit;

preferably, the transmission device further comprises a driving motor, and the gear unit is sleeved on a rotating shaft of the driving motor; the connecting piece is also provided with a motor hole and a swinging groove, and the gear unit extends to one surface of the meshing part through the motor hole; the driving arm reciprocates through the swing groove.

Preferably, the tail end of the transmission arm is provided with a second sector-shaped tooth, the second sector-shaped tooth is meshed with the gear unit, and the second gear unit extends into the swing groove and is attached and slid.

Preferably, the connecting piece is provided with a first rotating column and a second rotating column; the first connecting sleeve is sleeved on the first rotating column to realize rotation on the connecting plate; the second link engages a second pivot post to effect pivoting on the connector tiles.

Preferably, the first rotating column is provided with a first limiting bulge adjacent to the first rotating column, the first connecting arm is provided with a first limiting through hole, and the first limiting bulge is in adaptive connection with the first limiting through hole; the second rotating column is provided with a second limiting protrusion adjacent to the second rotating column, the second connecting arm is provided with a second limiting through hole, and the second limiting protrusion is in adaptive connection with the second limiting through hole.

Preferably, the shell comprises a bottom shell, an encapsulation shell and a cover shell; the bottom shell and the packaging shell form an accommodating cavity, the accommodating cavity is used for accommodating a control assembly, a transmission device and a connecting piece, and the cover shell is buckled on the packaging shell.

Preferably, the packaging structure further comprises an infrared detection device, and the packaging shell is provided with a detection opening for detecting by the infrared detection device in a matching manner; the cover shell is made of infrared-transmitting materials.

Preferably, the charging device further comprises a wireless charging device, and the wireless charging device is electrically connected with the control assembly; the encapsulation shell is provided with the position that holds that is used for the wireless charging device who holds.

Preferably, the shoe further comprises a shoe bottom, the shoe bottom is divided into a sliding part and a bearing part, and the sliding part is accommodated in the accommodating cavity and is in sliding connection with the joining part; the bearing part is vertically connected with one end of the accommodating cavity far away from the sliding part.

Preferably, the sliding part is provided with a pin unit, the joint piece is provided with a pin channel and a hook unit, and the pin unit slides in the pin channel and is locked by the hook unit.

The utility model has the beneficial effects that: compared with the prior art, the vehicle-mounted mobile phone support with the enhanced clamping performance comprises a shell; the mobile phone clamping device comprises a first clamping arm, a second clamping arm and a transmission device, wherein the first clamping arm and the second clamping arm are used for clamping a mobile phone, the transmission device is used for driving the first clamping arm and the second clamping arm to simultaneously open or retract, the transmission device is contained in a shell, and a control assembly is arranged in the shell and is electrically connected with the transmission device; the clamping device also comprises a connecting piece, wherein the connecting piece is accommodated in the shell, and the parts of the first clamping arm and the second clamping arm accommodated in the shell are respectively movably connected to the connecting piece; a first connecting arm is arranged at one end of the first clamping arm connected with the connecting piece, the first connecting arm is provided with first fan-shaped teeth, a second connecting arm and a transmission arm are arranged at one end of the second clamping arm connected with the connecting piece, and the second connecting arm is connected with the first connecting arm in a meshing manner through the first fan-shaped teeth to form a meshing part; the transmission device is far away from the meshing part and is provided with a gear unit, and the transmission arm extends towards the gear unit and is in meshing connection with the gear unit; the transmission keeps away from the meshing portion and sets up, and the transmission arm extends to transmission and meshes the connection by the meshing portion, and the transmission arm can be regarded as the arm of force, acts on the meshing portion that first centre gripping arm and second centre gripping arm formed at the transmission in-process for the effort that meshing portion received is strengthened, and then has strengthened the clamping performance, solves the problem that appears in the current.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a drawing showing the assembly of the present invention in the accommodation chamber

Fig. 4 is a view of the engagement member of the present invention with a second grasping arm.

The main element symbols are as follows:

1. a housing; 11. a bottom case; 12. packaging the shell; 13. a cover shell; 121. detecting the opening;

122. a containing position; 2. a first clamp arm; 21. a first connecting arm; 22. a first sector tooth;

23. a first limiting through hole; 3. a second clamp arm; 31. a second connecting arm; 32. a drive arm;

33. a second limiting through hole; 321. a second sector-shaped tooth; 4. a joining member; 41. a first rotating column;

42. a first limit protrusion; 43. a second rotating cylinder; 44. a second limit bulge; 45. a swing groove;

46. a motor hole; 47. a hook unit; 48. a pin channel; 5. a bracket; 51. a sliding part;

511. a pin unit; 52. a bearing part; 6. a control component; 7. a transmission device; 71. a drive motor;

72. a gear unit; 8. a flexible pad; 81 avoidance positions; 9. an infrared detection device.

Detailed Description

In order to more clearly describe the present invention, the present invention will be further described with reference to the accompanying drawings.

In the following description, details of general examples are given to provide a more thorough understanding of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. It should be understood that the specific embodiments are illustrative of the utility model and are not to be construed as limiting the utility model.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.

The increase in volume of cell-phone, under holistic rising trend also can appear in weight, can't guarantee the road surface planarization and then can't avoid appearing the automobile body shake at the in-process of traveling of car, the clamping performance to vehicle mobile phone support presents higher challenge, traditional vehicle mobile phone support is difficult to effectually carry out firm centre gripping with the cell-phone, consequently, need a neotype vehicle mobile phone support carry out stable clamp to the cell-phone of current trend urgently, with the problem that appears in solving now.

In order to solve the above problems, the present invention provides a vehicle-mounted mobile phone support with enhanced clamping performance, please refer to fig. 1 to 4, including a housing 1; the mobile phone clamping device comprises a first clamping arm 2 and a second clamping arm 3 for clamping a mobile phone, and a transmission device 7 for driving the first clamping arm 2 and the second clamping arm 3 to open or retract simultaneously, wherein the first clamping arm 2 and the second clamping arm 3 are provided with a flexible pad 8 specially through a mobile phone clamping part, the flexible pad 8 is provided with a avoiding hole 81, when the mobile phone is clamped, the flexible pad 8 provides buffer capacity to avoid abrasion when the mobile phone is clamped, and is also provided with the avoiding hole 81 to prevent the flexible pad 8 from touching a key on the side edge of the mobile phone in the clamping process; the transmission device 7 is accommodated in the shell, and a control assembly 6 is arranged in the shell 1 and is electrically connected with the transmission device 7; the clamping device also comprises a connecting piece 4, wherein the connecting piece 4 is accommodated in the shell 1, and the parts of the first clamping arm 2 and the second clamping arm 3 accommodated in the shell 1 are respectively movably connected to the connecting piece 4; a first connecting arm 21 is arranged at one end of the first clamping arm 2 connected with the connecting piece 4, a first fan-shaped tooth 22 is arranged on the first connecting arm 21, a second connecting arm 31 and a transmission arm 32 are arranged at one end of the second clamping arm 3 connected with the connecting piece 4, and the second connecting arm 31 is meshed with the first fan-shaped tooth 22 to form a meshing part; the transmission device 7 is far away from the meshing part, the transmission device 7 is provided with a gear unit 71, and the transmission arm 32 extends towards the gear unit 71 and is meshed with the gear unit 71; the transmission device 7 is driven by power to enable the first connecting arm 2 and the second connecting arm 3 of the meshing part to be meshed and rotated, the first clamping arm 2 and the second clamping arm 3 are controlled in the rotating process to further clamp the mobile phone, the transmission arm 32 is further arranged in the second connecting arm 3, the meshing part far away from the transmission device 7 is arranged, the transmission arm 32 extends to the transmission device 7 from the meshing part and is meshed with the gear unit 71 in the transmission device 7, the actual working process is that the transmission device 7 carries out power transmission to drive the gear unit 72 to rotate, the gear unit 72 is meshed and connected with the transmission arm 32 to further drive the transmission arm 32 to move, as the transmission arm 32 extends from the meshing part, it can be understood that the distance extending from the meshing part to the transmission device 7 of the transmission arm 32 can be formed, the transmission arm 32 drives the second connecting arm 31 to rotate, and the first connecting arm 31 is strengthened to rotate, so that the force applied to the meshing part is strengthened, the clamping performance of the first clamping arm 2 and the second clamping arm 3 is strengthened, and the clamping of the mobile phone is more stable.

Specifically, the transmission device 7 further comprises a driving motor 71, and a gear unit 72 is sleeved on a rotating shaft of the driving motor 71; the joint 4 is further provided with a motor hole 46 and a swing groove 45, and the gear unit 72 extends to one side of the engaging portion through the motor hole 46; the driving arm 32 performs a reciprocating motion through the swing groove 45; the end of the transmission arm 32 is provided with a second sector-shaped tooth 321, the second sector-shaped tooth 321 is engaged with the gear unit 72, and the second sector-shaped tooth 721 extends into the swing groove 45 and is attached to slide; the connecting piece 4 is provided with a motor hole 46, a rotating shaft of the driving motor 71 is connected with a gear unit 72, and a single eye of the gear extends to the same plane of the meshing part through the motor hole 4, so that the connection with the transmission arm 32 is realized; more specifically, the swing groove 45 that is provided with on the linking piece 4, driving arm 32 are equipped with the fan-shaped tooth of second 321, and the teeth of a cogwheel and the meshing of gear unit 72 of the fan-shaped tooth of second 321, and simultaneously, the fan-shaped tooth of second 321 extends to in the swing groove 45, and can understand, driving arm 32 carries out reciprocating swing according to the arc wall, and then drives the motion of meshing portion, and then control first centre gripping arm 2 and the development and drawing in of second centre gripping arm 3.

In this embodiment, the joint 4 is provided with a first rotating column 41 and a second rotating column 43; the first connecting arm 21 is engaged on the first rotation column 43 to rotate on the joint plate 4; the second connecting arm 31 is sleeved on the second rotating column 41 to realize rotation on the connecting joint plate 4; a first limiting protrusion 42 is arranged adjacent to the first rotating column 41, the first connecting arm 21 is provided with a first limiting through hole 23, and the first limiting protrusion 42 is in adaptive connection with the first limiting through hole 23; a second limiting protrusion 44 is arranged adjacent to the second rotating column 43, a second limiting through hole 44 is arranged on the second connecting arm 31, and the second limiting protrusion 44 is in adaptive connection with the second limiting through hole 33; the connecting piece 4 is provided with a first rotating column 41, the first connecting arm 31 is sleeved in the first rotating column 43, the first rotating column 43 of the first connecting arm 31 rotates around the center, the first connecting arm 31 and the first rotating column 43 can be firmly connected in the connecting direction through a buckling structure, the first connecting arm 21 is further provided with a first limiting through hole 23, the connecting piece 4 is provided with a first limiting bulge 42 in a matching manner, and the first limiting bulge 42 slides in the first limiting through hole 23 to limit the rotation of the first connecting arm 21; the second rotating column 43, the second connecting arm 31, the second limiting protrusion 44 and the second limiting through hole 33 are connected in a matching manner, and redundant description is omitted.

In the present embodiment, the housing 1 includes a bottom case 11, an enclosure case 12, and a cover case 13; the bottom shell 11 and the packaging shell 12 form an accommodating cavity, the control assembly 6, the transmission device 7 and the connecting piece 4 are accommodated in the accommodating cavity, and the cover shell 13 is buckled on the packaging shell 12; the packaging structure also comprises an infrared detection device 9, and a detection opening 121 for detecting by the infrared detection device 9 is arranged on the packaging shell 12 in a matching way; the cover shell 13 is made of an infrared transmitting material; the shell 1 is divided into a bottom shell 11, an encapsulation shell 12 and a cover shell 13, the bottom shell 11 and the encapsulation shell 23 form a main containing cavity, the control assembly 6, the transmission device 7, the connecting piece 4 and the infrared detection device 9 are orderly contained, the infrared detection device 9 matched with the encapsulation shell 12 is provided with a detection opening 121, and the cover shell 13 is made of an infrared-transmitting material, preferably toughened glass, so that the functionality of the infrared detection device 9 is not influenced; through introducing infrared detection device 9, when detecting that the cell-phone is close to, infrared detection device 9 sends the signal to control assembly 6, and control assembly 6 carries out power drive at control transmission 7, and then makes first centre gripping arm 2 and second centre gripping arm 3 carry out the centre gripping to the cell-phone, realizes automatic centre gripping. In order to bring convenience to a user to take out the mobile phone in a clamping state, a rear touch button can be arranged on one surface of the bottom shell, which is far away from the cavity, and is electrically connected with the control assembly 6, the user touches the rear touch button, and when the vehicle-mounted mobile phone support is in the clamping state, the rear touch button can be in a loosening state; or when the vehicle-mounted mobile phone support is in a loose state, the vehicle-mounted mobile phone support clamps the mobile phone.

Furthermore, a wireless charging device can be added, and the wireless charging device is electrically connected with the control component 6; the packaging shell 12 is provided with a containing position 122 for containing the wireless charging device; wireless charging device mainly divide into charging coil and connecting wire, and the charging coil holds on holding the position, and the adaptation, the bottom that holds position 122 is provided with the hole site that is used for walking the line, and the connecting wire passes through the hole site to be connected with control assembly 6 at the holding intracavity to cover through lid shell 13 and close, kept on-vehicle cell phone stand's pleasing to the eye function that still provides the wireless charging of provider.

In this embodiment, the device further comprises a support bottom 5, the support bottom 5 is divided into a sliding portion 51 and a support portion 52, and the sliding portion 51 is accommodated in the housing and is slidably connected with the connecting piece 4; the bearing part 52 is vertically connected with one end of the accommodating cavity far away from the sliding part 51, and the bearing part 52 is mainly used for bearing the mobile phone; the sliding part 51 is provided with a pin unit 511, the joint piece 4 is provided with a pin channel 48 and a hook unit 47, and the pin unit 511 slides in the pin channel 48 and is locked by being pressed with the hook unit 47; the prong channels 48, which are used to mount the prong units, may be provided with a stop mechanism in the sliding direction of the prong units 511, the pin unit 511 is made of soft material, the hook unit 47 has a plurality of pressing points pressed by the pin unit 511, so that the sliding part can slide out with different lengths, in practice, the positions of wireless charging induction devices carried by mobile phones of different brands and models are different, and the wireless charging induction devices are adjusted through the sliding-out depth of the supportable bottom, further, the positions of the wireless charging coils carried by the mobile phone charger are matched, so that when a user uses the vehicle-mounted mobile phone support to carry out wireless charging, the charging efficiency of the mobile phone is prevented from being influenced by the mismatching of wireless charging, and a charging interface can be added in the bearing part 52 according to the charging requirement of a user, so that the wired charging of the user in a driving process is facilitated; the tail end of the supporting part can be additionally provided with a touch key for controlling the first clamping arm and the second clamping arm to open and close or contract, and when a user uses the mobile phone, the user can clamp and release the mobile phone by touching the touch key.

The utility model has the advantages that:

1) the distance extending from the meshing part to the transmission device by the transmission arm can be regarded as forming a force arm mechanism, the transmission arm drives the second connecting arm to rotate, so that the rotation of the first connecting arm is enhanced, the force applied to the meshing part is enhanced, the clamping performance of the first clamping arm and the second clamping arm is enhanced, and the clamping of the mobile phone is more stable;

2) by introducing the infrared detection device, when the mobile phone is detected to be close to the mobile phone, the infrared detection device sends a signal to the control assembly, and the control assembly controls the transmission device to carry out power driving, so that the first clamping arm and the second clamping arm clamp the mobile phone, and automatic clamping is realized;

3) the flexible pad that the part that first centre gripping arm and second centre gripping arm and cell-phone were laminated still was provided with specially, and flexible pad is provided with dodges the hole, and when carrying out the centre gripping to the cell-phone, flexible pad provides certain compliance, is unlikely to scrape colored cell-phone, and still disposes and dodges the hole, prevents to touch the button of cell-phone side at the flexible pad of in-process of centre gripping.

The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. A vehicle-mounted mobile phone support with enhanced clamping performance comprises a shell; the mobile phone clamping device comprises a first clamping arm, a second clamping arm and a transmission device, wherein the first clamping arm and the second clamping arm are used for clamping a mobile phone, the transmission device is used for driving the first clamping arm and the second clamping arm to simultaneously open or retract; the clamping device is characterized by further comprising a connecting piece, wherein the connecting piece is contained in the shell, and the parts, contained in the shell, of the first clamping arm and the second clamping arm are movably connected to the connecting piece respectively; a first connecting arm is arranged at one end of the first clamping arm connected with the connecting piece, the first connecting arm is provided with first sector-shaped teeth, a second connecting arm and a transmission arm are arranged at one end of the second clamping arm connected with the connecting piece, and the second connecting arm is connected with the first connecting arm in a meshing mode through the first sector-shaped teeth to form a meshing part; the transmission device is far away from the meshing part and is provided with a gear unit, and the transmission arm extends towards the gear unit and is meshed and connected with the gear unit.

2. The vehicle-mounted mobile phone support for enhancing the clamping performance as claimed in claim 1, wherein the transmission device further comprises a driving motor, and the gear unit is sleeved on a rotating shaft of the driving motor; the connecting piece is also provided with a motor hole and a swinging groove, and the gear unit extends to one surface of the meshing part through the motor hole; the driving arm reciprocates through the swing groove.

3. The vehicle-mounted mobile phone support with the enhanced clamping performance as claimed in claim 2, wherein the end of the transmission arm is provided with a second sector-shaped tooth, the second sector-shaped tooth is meshed with the gear unit, and the second gear unit extends into the swing groove and is attached to slide.

4. The vehicle-mounted mobile phone support with the enhanced clamping performance as claimed in claim 1, wherein the linking member is provided with a first rotating column and a second rotating column; the first connecting sleeve is sleeved on the first rotating column to realize rotation on the connecting plate; the second link engages a second pivot post to effect pivoting on the connector tiles.

5. The vehicle-mounted mobile phone support with the enhanced clamping performance as claimed in claim 4, wherein a first limiting protrusion is arranged adjacent to the first rotating column, the first connecting arm is provided with a first limiting through hole, and the first limiting protrusion is in adaptive connection with the first limiting through hole; the second rotating column is provided with a second limiting protrusion adjacent to the second rotating column, the second connecting arm is provided with a second limiting through hole, and the second limiting protrusion is in adaptive connection with the second limiting through hole.

6. The vehicle-mounted mobile phone support with the enhanced clamping performance as claimed in claim 1, wherein the housing comprises a bottom shell, an encapsulation shell and a cover shell; the bottom shell and the packaging shell form an accommodating cavity, the accommodating cavity is used for accommodating a control assembly, a transmission device and a connecting piece, and the cover shell is buckled on the packaging shell.

7. The vehicle-mounted mobile phone support with the reinforced clamping performance as claimed in claim 6, further comprising an infrared detection device, wherein the packaging shell is provided with a detection opening for detecting by the infrared detection device; the cover shell is made of infrared-transmitting materials.

8. The vehicle-mounted mobile phone support for reinforcing the clamping performance as claimed in claim 6, further comprising a wireless charging device, wherein the wireless charging device is electrically connected with the control assembly; the encapsulation shell is provided with the position that holds that is used for the wireless charging device who holds.

9. The vehicle-mounted mobile phone support with the enhanced clamping performance as claimed in claim 6, further comprising a bottom support, wherein the bottom support is divided into a sliding portion and a supporting portion, the sliding portion is accommodated in the accommodating cavity and is in sliding connection with the connecting portion; the bearing part is vertically connected with one end of the accommodating cavity far away from the sliding part.

10. The vehicle-mounted handset support with enhanced clamping performance as claimed in claim 9, wherein the sliding part is provided with a pin unit, the linking member is provided with a pin passage and a hook unit, and the pin unit slides in the pin passage and is locked by being clamped by the hook unit.