Vehicle-mounted mobile phone fixing device

Abstract

The invention belongs to the technical field of vehicle-mounted equipment, and discloses a vehicle-mounted mobile phone fixing device. The vehicle-mounted mobile phone fixing device comprises a base, a telescopic piece and a connecting piece, the base is fixedly arranged in the instrument assembly, the first end of the telescopic piece is connected with the base, the connecting piece is connected with the second end of the telescopic piece, a magnetic attraction piece used for attracting a mobile phone is arranged on the connecting piece, a penetrating hole is formed in a shell of the instrument assembly, and the telescopic piece can stretch out and draw back relative to the base. And the connector extends out of or retracts into the through hole. According to the vehicle-mounted mobile phone fixing device, when the vehicle-mounted mobile phone fixing device is used, the connector extends out of the instrument assembly through the telescopic piece, after a mobile phone is fixed to the mobile phone fixing piece, the mobile phone fixing piece is fixed to the connector through the magnetic attraction piece, and therefore the mobile phone is fixed to the instrument assembly, a mobile phone support does not need to be purchased, and reliable fixing of the mobile phone can be achieved; the structure is simple, use is convenient, and practicability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted equipment, and in particular to a vehicle-mounted mobile phone fixing device. Background Art

[0002] At present, many drivers use mobile phones to perform navigation operations while driving their vehicles. In order to facilitate observation of the navigation map, it is necessary to fix the mobile phone on the instrument assembly of the vehicle.

[0003] In the prior art, some vehicles, especially commercial vehicles, are not equipped with dedicated mobile phone fixing devices such as brackets. Therefore, it is necessary to purchase brackets from outside for assembly to fix the mobile phone. However, due to objective factors such as the space inside the vehicle and the structure of the instrument, some mobile phone brackets are not suitable for different models, which brings limitations to assembly and use. In addition, the purchase and assembly of mobile phone brackets from outside also increases the time, manpower and financial costs to a certain extent. Summary of the invention

[0004] The object of the present invention is to provide a vehicle-mounted mobile phone fixing device, which can be arranged on an instrument assembly of a vehicle, is convenient for fixing a mobile phone, does not need to purchase a bracket externally, is easy to use, and has strong practicality.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A vehicle-mounted mobile phone fixing device is provided on the instrument assembly, and the vehicle-mounted mobile phone fixing device comprises:

[0007] A base, the base being fixedly disposed in the instrument assembly;

[0008] A telescopic member, a first end of which is connected to the base;

[0009] The connecting piece includes a connecting head and a mobile phone fixing piece, wherein the connecting head is connected to the second end of the telescopic piece, and a magnetic suction piece is provided on the connecting head, and the magnetic suction piece can absorb the mobile phone fixing piece, and the mobile phone fixing piece is used to fix the mobile phone;

[0010] The shell of the instrument assembly is provided with a through hole, and the telescopic member can be telescoped relative to the base so that the connecting head can be extended out of or retracted into the through hole.

[0011] Preferably, the base is provided with a first fixing hole, the instrument assembly is provided with a second fixing hole, and the fixing piece passes through the first fixing hole and is fixedly connected with the second fixing hole.

[0012] Preferably, the fixing member comprises a bolt, the second fixing hole is configured as a threaded hole, and the bolt passes through the first fixing hole and is threadedly connected with the second fixing hole.

[0013] Preferably, the telescopic member includes a first telescopic part and a second telescopic part, the first telescopic part is fixedly connected to the base, the second telescopic part is fixedly connected to the connecting head, and the second telescopic part is slidably mounted on the first telescopic part.

[0014] Preferably, the invention further comprises a telescopic driving member, wherein the telescopic driving member can drive the second telescopic part to telescope relative to the first telescopic part.

[0015] Preferably, the telescopic driving member comprises a gas strut, one end of the gas strut is connected to the first telescopic part, and the other end of the gas strut is connected to the second telescopic part.

[0016] Preferably, the telescopic driving member comprises a driving cylinder, one of a cylinder body and a cylinder rod of the driving cylinder is connected to the first telescopic part, and the other is connected to the second telescopic part.

[0017] Preferably, the telescopic driving member includes a linear servo module, and the linear servo module includes a slide rail and a sliding part, one of the slide rail and the sliding part is connected to the first telescopic part, and the other is connected to the second telescopic part.

[0018] Preferably, the second telescopic portion is provided with a bearing, and the connecting head can rotate around the axial direction of the second telescopic portion through the bearing.

[0019] Preferably, the connector is further provided with a decorative cap, the decorative cap is spherical, and the projection of the decorative cap in the telescopic direction of the telescopic member is set as the outer contour of the perforation.

[0020] Beneficial effects:

[0021] The mobile phone fixing assembly provided by the present invention can fix the mobile phone on the mobile phone fixing part when it is needed to fix the mobile phone, extend the connector out of the instrument assembly through the telescopic part, and fix the mobile phone fixing part on the connector through the magnetic part, so that the mobile phone can be fixed on the instrument assembly, and no external mobile phone holder is needed, and the mobile phone can be reliably fixed, and the structure is simple and easy to use. In addition, when it is not needed to fix the mobile phone, the mobile phone fixing part is removed, and the telescopic part controls the connector to retract into the instrument assembly, and other space of the instrument assembly is not occupied, and the practicality is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the vehicle-mounted mobile phone fixing device provided by the present invention;

[0023] Figure 2 It is a structural schematic diagram of the vehicle-mounted mobile phone fixing device provided by the present invention retracting the instrument assembly;

[0024] Figure 3It is a structural schematic diagram of the vehicle-mounted mobile phone fixing device provided by the present invention extending out of the instrument assembly;

[0025] Figure 4 It is a structural schematic diagram of a mobile phone fixing member provided by the present invention;

[0026] Figure 5 is a schematic diagram of the connection between the telescopic driving member and the telescopic member provided by one embodiment of the present invention;

[0027] Figure 6 is a schematic diagram of the connection between the telescopic driving member and the telescopic member provided by another embodiment of the present invention;

[0028] Figure 7 It is a schematic diagram of the connection between the telescopic driving member and the telescopic member provided by another embodiment of the present invention.

[0029] In the figure:

[0030] 1. Base; 11. Fixing parts;

[0031] 2. telescopic member; 21. first telescopic portion; 22. second telescopic portion;

[0032] 3. Connector; 31. Connector; 32. Mobile phone fixing part; 321. Support plate; 322. Bottom plate; 323. Clamping part; 33. Magnetic part; 311. Decorative cap;

[0033] 41. gas strut; 42. drive cylinder; 43. linear servo module; 431. slide rail; 432. sliding part;

[0034] 5. Instrument assembly; 51. Perforation. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0039] This embodiment provides a vehicle-mounted mobile phone fixing device. Figures 1 to 7 As shown, the vehicle-mounted mobile phone fixing device is arranged on the instrument assembly 5, and the vehicle-mounted mobile phone fixing device includes a base 1, a telescopic member 2 and a connecting member 3. Among them, the base 1 is fixedly arranged in the instrument assembly 5, the first end of the telescopic member 2 is connected to the base 1, the connecting member 3 includes a connector 31 and a mobile phone fixing member 32, the connector 31 is connected to the second end of the telescopic member 2, and a magnetic member 33 is provided on the connector 31, the magnetic member 33 can absorb the mobile phone fixing member 32, and the mobile phone fixing member 32 is used to fix the mobile phone, and the outer shell of the instrument assembly 5 is provided with a through hole 51, and the telescopic member 2 can be extended relative to the base 1, so that the connecting member 3 extends or retracts into the through hole 51.

[0040] In this embodiment, the vehicle's instrument assembly 5 is provided with the vehicle-mounted mobile phone fixing device. When the mobile phone needs to be fixed, the mobile phone is fixed on the mobile phone fixing part 32, the connector 31 is extended out of the instrument assembly 5 through the telescopic part 2, and the mobile phone fixing part 32 is fixed to the connector 31 through the magnetic part 33, so that the mobile phone can be fixed on the instrument assembly 5, and there is no need to purchase a mobile phone holder, and the mobile phone can be reliably fixed. The structure is simple and easy to use. In addition, when the mobile phone does not need to be fixed, the mobile phone fixing part 32 is removed, and the telescopic part 2 controls the connector 31 to retract into the instrument assembly 5, and it does not occupy other space of the instrument assembly 5, and it is highly practical.

[0041] As an optional embodiment, the mobile phone fixing member 32 includes a support plate 321, a bottom plate 322 and a clamping member 323. The bottom plate 322 is fixed below the support plate 321. The support plate 321 is used to support the back of the mobile phone, the bottom plate 322 is used to support the bottom surface of the mobile phone, and the clamping member 323 is arranged on two opposite sides of the middle of the support plate 321, and is used to clamp the mobile phone to fix the mobile phone on the support plate 321. Specifically, a magnetic attraction portion (not shown) that can be attracted to the magnetic attraction member 33 is arranged on the support plate 321, and the support plate 321 can be effectively attracted by the magnetic attraction between the magnetic attraction member 33 and the magnetic attraction portion.

[0042] Optionally, the magnetic attraction portion is arranged on the side of the support plate 321 facing away from the bottom plate 322, and a shielding plate (not shown) is arranged on the side of the support plate 321 facing the bottom plate 322. The shielding plate is made of magnetic shielding material and is used to shield the magnetic field generated by the magnetic attraction member 33, thereby avoiding interference with the fixed mobile phone signal. Optionally, the shielding plate can be made of copper, aluminum, ferrite, etc.

[0043] Optionally, the magnetic member 33 can be set as an electromagnet. When powered on, the magnetic member 33 generates a strong magnetic force, which can be closely attached to the support plate 321 to prevent the support plate 321 from being displaced when the vehicle passes through a pothole. When the mobile phone fixture 32 needs to be removed, the electromagnet is powered off to release the magnetic attraction on the support plate 321, and the mobile phone fixture 32 and the mobile phone are removed smoothly.

[0044] In some other optional embodiments, the clamping member 323 on the support plate 321 can be replaced with an elastic binding band, which can securely bind the mobile phone to the support plate 321 and also fix the mobile phone.

[0045] Optionally, an elastic buffer layer is provided on one side of the support plate 321 facing the bottom plate 322 . The elastic buffer layer can provide effective and reliable collision buffering for the fixed mobile phone, thereby preventing damage to the mobile phone caused by hard contact.

[0046] In this embodiment, the base 1 is provided with a first fixing hole, the instrument assembly 5 is provided with a second fixing hole, and the fixing member 11 penetrates the first fixing hole and is fixedly connected with the second fixing hole. Specifically, the instrument assembly 5 is provided with a receiving cavity (not shown), the receiving cavity is connected to the through hole 51, and the second fixing hole is provided in the receiving cavity. The fixing member 11 penetrates the first fixing hole and is fixedly connected with the second fixing hole, so that the base 1 is reliably fixed in the receiving cavity, and the fixed connection of the vehicle-mounted mobile phone fixing device as a whole is realized.

[0047] Optionally, the fixing member 11 includes a bolt, the second fixing hole is configured as a threaded hole, and the bolt passes through the first fixing hole and is threadedly connected with the second fixing hole.

[0048] In some other optional implementations, the fixing member 11 may also be configured as a screw, a fixing pin, a plug connector or other structural members, which can also achieve a fixed connection of the base plate 322 .

[0049] Taking the fixing member 11 as a plug as an example, the plug is fixedly connected to the lower end surface of the base plate 322, and the fitting relationship between the plug and the second fixing hole is an interference fit. After the plug passes through the first fixing hole, it is fixedly inserted into the second fixing hole, which can also achieve a fixed connection of the base plate 322.

[0050] In this embodiment, a plurality of first fixing holes and second fixing holes are provided in a one-to-one correspondence, and such a configuration can further ensure the reliability and stability of the base 1 being fixed.

[0051] As a preferred embodiment, the bottom plate 322 is configured as a rectangular plate, and four first fixing holes are provided, and the four fixing holes are distributed at four corners of the rectangular bottom plate 322 .

[0052] In this embodiment, the telescopic member 2 includes a first telescopic portion 21 and a second telescopic portion 22, the first telescopic portion 21 is fixedly connected to the base 1, the second telescopic portion 22 is fixedly connected to the connector 31, and the second telescopic portion 22 is slidably sleeved on the first telescopic portion 21. Specifically, the second telescopic portion 22 is telescoped relative to the first telescopic portion 21, so that the connector 31 can be telescoped relative to the base 1, thereby extending or retracting the connector 31 into the through hole 51.

[0053] In some other optional embodiments, the telescopic member 2 can also be configured as more than two telescopic parts, and the more than two telescopic parts are nested in sequence, which can also achieve reliable telescopic extension of the connecting head 31.

[0054] In this embodiment, the first telescopic portion 21 is fixedly connected to the base 1 via a first fixing rod, and the second telescopic portion 22 is fixedly connected to the connector 31 via a second fixing rod.

[0055] In this embodiment, the vehicle-mounted mobile phone fixing device further includes a telescopic driving member, which can drive the second telescopic portion 22 to telescope relative to the first telescopic portion 21. By providing the telescopic driving member, the telescopic movement of the second telescopic portion 22 relative to the first telescopic portion 21 can be effectively controlled, and the operation is convenient and reliable.

[0056] As an optional implementation, refer to Figure 5As shown, the telescopic driving member includes a gas strut 41, one end of the gas strut 41 is connected to the first telescopic part 21, and the other end of the gas strut 41 is connected to the second telescopic part 22. Specifically, the telescopic driving member is set as the gas strut 41. According to the characteristics of the gas strut 41 itself, by pressing the connecting head 31, the gas strut 41 can automatically drive the second telescopic part 22 to extend out of the first telescopic part 21, so that the connecting head 31 extends out of the through hole 51. And here, the connecting head 31 is pressed downward, the gas strut 41 retracts, and the connecting head 31 retracts into the through hole 51, and finally can be maintained in the retracted state. Optionally, the gas strut 41 is arranged between the second telescopic part 22 and the first telescopic part 21.

[0057] As an optional implementation, refer to Figure 6 As shown, the telescopic drive member includes a drive cylinder 42, one of the cylinder body and the cylinder rod of the drive cylinder 42 is connected to the first telescopic part 21, and the other is connected to the second telescopic part 22. Specifically, the cylinder body of the drive cylinder 42 is connected to the second telescopic part 22, and the cylinder rod of the drive cylinder 42 is connected to the first telescopic part 21. The drive cylinder 42 can be set to be electrically driven, pneumatically driven or hydraulic oil driven. The control button can be integrated on the instrument assembly 5 through the control element communication. The telescopic control of the cylinder rod of the drive cylinder 42 can be achieved through the control button. The cylinder rod of the drive cylinder 42 is telescopic relative to the cylinder body, which can drive the second telescopic part 22 to telescopic relative to the first telescopic part 21, thereby realizing the telescopic control of the connecting head 31 relative to the through hole 51. Optionally, the telescopic cylinder is arranged between the second telescopic part 22 and the first telescopic part 21.

[0058] As an optional implementation, refer to Figure 7 As shown, the telescopic drive member includes a linear servo module 43, and the linear servo module 43 includes a slide rail 431 and a sliding part 432, one of which is connected to the first telescopic part 21, and the other is connected to the second telescopic part 22. Specifically, the slide rail 431 of the linear servo module 43 is connected to the inner wall of the second telescopic part 22, and the sliding part 432 of the linear servo module 43 is connected to the outer wall of the first telescopic part 21. The instrument assembly 5 can be integrated with a control button through control element communication. The sliding control of the sliding part 432 can be achieved through the control button. The sliding part 432 slides relative to the slide rail 431, which can drive the second telescopic part 22 to telescope relative to the first telescopic part 21, thereby achieving telescopic control of the connector 31 relative to the perforation 51. Optionally, the linear servo module 43 is arranged between the second telescopic part 22 and the first telescopic part 21.

[0059] As an optional embodiment, when the telescopic drive member is set as a drive cylinder 42 and a linear servo module 43 and other components that can automatically control the telescopic movement, a sensor can also be correspondingly set on the connector 31, and the sensor can sense whether a mobile phone fixture 32 is installed on the connector 31. Specifically, when a mobile phone fixture 32 is installed on the connector 31, the sensor sends a signal to the control element inside the instrument assembly 5, and the control element will not receive the retraction control of the control button at this time. Taking the telescopic drive member as an example, when a mobile phone fixture 32 is installed on the connector 31, if the control button is pressed to control the connector 31 to retract, the control element will not receive the control of the control button at this time, that is, the control button is temporarily invalid. The purpose of such a setting is to prevent the driver from negligence or accidental touch, etc., and the connector 31 is controlled to retract when the mobile phone fixture 32 is not removed from the connector 31, so as to avoid damage to the mobile phone fixture 32 and the mobile phone.

[0060] In this embodiment, continue to refer to Figures 1 to 3 As shown, the second telescopic portion 22 is provided with a bearing (not shown), and the connector 31 can rotate around the axial direction of the second telescopic portion 22 through the bearing. By providing the bearing, the swing angle of the connector 31 relative to the second telescopic portion 22 can be adjusted, thereby adjusting the position of the fixed mobile phone.

[0061] In this embodiment, the connecting head 31 is adapted to remain fixed after being rotated into place relative to the second telescopic portion 22 .

[0062] Optionally, a driving motor is provided between the second telescopic portion 22 and the connecting head 31, the housing of the driving motor is fixedly connected to the second telescopic portion 22, and the output shaft of the driving motor is fixedly connected to the connecting head 31. The output shaft of the driving motor rotates to drive the connecting head 31 to rotate relative to the second telescopic portion 22, thereby adjusting the swing angle of the connecting head 31 relative to the second telescopic portion 22. After the angle is adjusted to the desired position, the output shaft of the driving motor stops rotating, so that the connecting head 31 can be kept at the current angle position.

[0063] Optionally, a control button can be integrated on the instrument assembly 5 through control element communication. The control button can be used to control the rotation angle of the output shaft of the drive motor.

[0064] In this embodiment, continue to refer to Figures 1 to 3 As shown, the connector 31 is also provided with a decorative cap 311, which is spherical. The decorative cap 311 is spherical in shape, which is convenient for processing, reduces the corners and avoids damage when contacting with human hands, and also has a certain aesthetic effect.

[0065] In this embodiment, the projection of the decorative cap 311 in the extension direction of the telescopic member 2 is set to the outer contour of the through hole 51. That is, the projection shape of the decorative cap 311 in the extension direction of the telescopic member 2 is the same as the outer contour of the through hole 51 in this direction. This arrangement can reduce the gap between the through hole 51 and the decorative cap 311 when the connector 31 is retracted.

[0066] Optionally, a flexible sealing ring may be provided on the outer edge of the through hole 51, so as to effectively seal the gap between the connector 31 and the through hole 51 and prevent external dust and impurities from entering the accommodating cavity.

[0067] In summary, the vehicle-mounted mobile phone fixing device provided in this embodiment is integrated with the instrument assembly 5, and can fix the mobile phone on the instrument assembly 5, without the need to purchase a mobile phone holder, and can achieve reliable fixing of the mobile phone, with a simple structure and convenient use. In addition, when the mobile phone does not need to be fixed, the mobile phone fixing part 32 is removed, and the telescopic part 2 controls the connector 31 to retract into the instrument assembly 5, and other space of the instrument assembly 5 is not occupied, and the practicality is strong.

[0068] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A vehicle-mounted mobile phone fixing device, arranged on an instrument assembly (5), characterized in that: The vehicle-mounted mobile phone fixing device comprises: A base (1), wherein the base (1) is fixedly disposed in the instrument assembly (5); A telescopic member (2), wherein a first end of the telescopic member (2) is connected to the base (1); The connecting member (3) comprises a connecting head (31) and a mobile phone fixing member (32), wherein the connecting head (31) is connected to the second end of the telescopic member (2), and a magnetic attraction member (33) is provided on the connecting head (31), wherein the magnetic attraction member (33) can adsorb the mobile phone fixing member (32), and the mobile phone fixing member (32) is used to fix the mobile phone; The outer shell of the instrument assembly (5) is provided with a through hole (51), and the telescopic member (2) can be telescoped relative to the base (1) so that the connecting head (31) can be extended or retracted into the through hole (51).

2. The vehicle-mounted mobile phone fixing device according to claim 1, characterized in that: The base (1) is provided with a first fixing hole, the instrument assembly (5) is provided with a second fixing hole, and the fixing member (11) passes through the first fixing hole and is fixedly connected with the second fixing hole.

3. The vehicle-mounted mobile phone fixing device according to claim 2, characterized in that: The fixing member (11) comprises a bolt, the second fixing hole is configured as a threaded hole, and the bolt passes through the first fixing hole and is threadedly connected with the second fixing hole.

4. The vehicle-mounted mobile phone fixing device according to claim 1, characterized in that: The telescopic member (2) comprises a first telescopic portion (21) and a second telescopic portion (22); the first telescopic portion (21) is fixedly connected to the base (1); the second telescopic portion (22) is fixedly connected to the connecting head (31); and the second telescopic portion (22) is slidably sleeved on the first telescopic portion (21).

5. The vehicle-mounted mobile phone fixing device according to claim 4, characterized in that: It also comprises a telescopic driving member, wherein the telescopic driving member is capable of driving the second telescopic portion (22) to telescope relative to the first telescopic portion (21).

6. The vehicle-mounted mobile phone fixing device according to claim 5, characterized in that: The telescopic driving member comprises a gas strut (41), one end of the gas strut (41) is connected to the first telescopic part (21), and the other end of the gas strut (41) is connected to the second telescopic part (22).

7. The vehicle-mounted mobile phone fixing device according to claim 5, characterized in that: The telescopic driving member comprises a driving cylinder (42), one of a cylinder body and a cylinder rod of the driving cylinder (42) being connected to the first telescopic part (21), and the other being connected to the second telescopic part (22).

8. The vehicle-mounted mobile phone fixing device according to claim 5, characterized in that: The telescopic drive component comprises a linear servo module (43), and the linear servo module comprises a slide rail (431) and a sliding part (432), one of the slide rail (431) and the sliding part (432) is connected to the first telescopic part (21), and the other is connected to the second telescopic part (22).

9. The vehicle-mounted mobile phone fixing device according to claim 4, characterized in that: The second telescopic portion is provided with a bearing, and the connecting head (31) can rotate around the axial direction of the second telescopic portion (22) via the bearing.

10. The vehicle-mounted mobile phone fixing device according to claim 1, characterized in that: The connecting head (3) is also provided with a decorative cap (311), the decorative cap (311) is configured to be spherical, and the projection formed by the decorative cap (311) in the telescopic direction of the telescopic member (2) is configured to be the outer contour of the through hole (51).

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