Mobile terminal support

By setting rotatable locking parts and elastic parts on the mobile phone holder, the problem of unstable clamping of the mobile phone holder under bumpy road conditions is solved, and the effect of stable clamping and angle adjustment is achieved.

CN223237524UActive Publication Date: 2025-08-19SHENZHEN ANNAIJIA ELECTRONICS CO LTD
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Patent Information

Application Number
CN202422662999.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-31
Publication Date
2025-08-19
Estimated Expiration
2034-10-31

AI Technical Summary

Technical Problem

The existing mobile phone holder is unstable under bumpy road conditions, which can easily cause the phone to fall off.

Method used

The clamp is locked or unlocked by rotatable locking member. Combined with the elastic force of the elastic member, it ensures that the clamping member firmly clamps the phone and adjusts the angle through the rotatable base to meet the needs of use.

Benefits of technology

Effectively prevent the phone from falling, improve clamping stability, and adjust the angle of the phone to meet different usage needs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a mobile terminal support which comprises a base and a clamping piece which can move relative to the base and is used for fixing a mobile terminal on the base, and the clamping piece is arranged on the base. A locking piece used for locking the clamping piece is rotatably mounted on the base; along with the rotation of the locking piece relative to the base, the locking piece locks the clamping piece or unlocks the clamping piece; therefore, the clamping piece can be locked, the clamping piece is prevented from loosening, the clamping piece can stably clamp the mobile phone, and the phenomenon that the mobile phone falls off is not prone to occurring.
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Description

Technical Field

[0001] The utility model relates to the field of mobile phone bracket technology, in particular to a mobile terminal bracket. Background Art

[0002] As mobile phones have become a must-have for people when traveling, there is an increasing demand for mobile phone holders that can fix mobile phones on the center console of the car in order to use the mobile phones while driving.

[0003] Currently, most center console phone holders on the market use elastic, telescopic, or gravity-driven structures to drive the clamping arms to clamp the phone. For example, some elastic-type phone clamping holders typically include a base and a clamping member that can move relative to the base to secure the phone to the base. The clamping member is connected to a spring, and the clamping member clamps the phone under the elastic force of the spring. In other words, the clamping member is pushed to clamp the phone by the spring's restoring force. This clamping method is not strong enough, and is limited by the elastic expansion and contraction of the spring. When encountering bumpy roads, vibrations can easily cause the clamping member to loosen with the elastic expansion and contraction of the spring, resulting in an unstable clamping of the phone, which can easily cause the phone to fall.

[0004] Therefore, it is necessary to develop a new technology to solve the above problems. Utility Model Content

[0005] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a mobile terminal holder that can lock the clamping member to prevent it from loosening, so that the clamping member can firmly clamp the mobile phone and prevent the mobile phone from falling.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A mobile terminal holder comprises a base and a clamping member movable relative to the base for fixing a mobile terminal to the base, wherein the clamping member is arranged on the base; a locking member for locking the clamping member is rotatably mounted on the base; as the locking member rotates relative to the base, the locking member locks or unlocks the clamping member.

[0008] As a preferred solution, the locking member has a first locking portion, and the clamping member has a second locking portion; as the locking member rotates relative to the base, the first locking portion locks or unlocks the second locking portion.

[0009] As a preferred solution, an elastic member connected to the clamping member is installed on the base, and the clamping member fixes the mobile terminal on the base under the elastic force of the elastic member.

[0010] As a preferred solution, the clamping member includes a sliding plate portion and a clamping arm connected to the upper end of the sliding plate portion, the sliding plate portion can be slidably arranged in the base, one end of the elastic member abuts the base, and the other end of the elastic member abuts the sliding plate portion, the clamping arm extends out of the base, and the base is provided with a backrest member, a clamping space for clamping the mobile terminal is formed between the clamping arm and the backrest member, and the second locking portion is arranged on the sliding plate portion.

[0011] As a preferred solution, the clamping arm is provided with an elastic abutment member for pressing the mobile terminal on the side facing the backrest member, the first locking portion is a first latching tooth provided on one end of the locking portion, and the second locking portion is a plurality of second latching teeth extending along the sliding direction of the sliding plate portion, and rotates with the locking portion relative to the base; the first latching tooth and the second latching tooth are engaged and transmitted to push the sliding plate portion to move.

[0012] As a preferred solution, a first limiting portion is provided on the locking member, and a second limiting portion for engaging with the first limiting portion is provided on the base; when the first limiting portion is engaged with the second limiting portion, the locking member locks the clamping member; when the first limiting portion is disengaged from the second limiting portion, the locking member releases the lock on the clamping member.

[0013] As a preferred solution, a clearance groove adapted to the locking member is provided on the front side of the upper end of the base, a first through-hole for the first limiting portion to pass through is provided at the bottom of the clearance groove, and the second limiting portion is provided at the edge of the first through-hole;

[0014] When the locking member is rotated into the clearance groove, the first limiting portion passes through the first through hole and is engaged with the second limiting portion.

[0015] As a preferred solution, a rotating seat is installed at the lower end of the base, and the base is rotatably connected to the rotating seat around a first axis.

[0016] As a preferred solution, a base is installed at the lower end of the rotating seat, and the rotating seat is rotatably connected to the base around a second axis, and the first axis and the second axis are perpendicular to each other.

[0017] As a preferred solution, the relative rotation between the rotating seat and the base is limited by an elastic positioning assembly, and the elastic positioning assembly includes a spring and a positioning member. The rotating seat or the base is provided with a plurality of positioning parts arranged in sequence along the rotation direction of the rotating seat, and the positioning member is positioned in the positioning part under the elastic force of the spring; when the rotating seat rotates relative to the base, the positioning member can overcome the elastic force of the spring and disengage from the positioning part.

[0018] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that it is mainly achieved by rotatably mounting a locking member on the base. As the locking member rotates relative to the base, the locking member locks or unlocks the clamping member. In this way, the clamping member can be locked by the locking member to prevent the clamping member from loosening, so that the clamping member firmly clamps the mobile phone and is not likely to fall off.

[0019] Furthermore, by rotatably connecting the base to a rotating base around a first axis, and rotatably connecting the rotating base to a base around a second axis, with the first axis being perpendicular to the second axis, after the base is fixed, the base can be driven to rotate in a first direction by rotating the rotating base, and the angle of the base in a second direction can be adjusted by rotating the base, thereby facilitating adjustment of the angle of the base, and enabling adjustment of the angle of the mobile terminal (such as a mobile phone) to meet the user's usage needs.

[0020] In order to more clearly illustrate the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the mobile terminal bracket provided by an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the mobile terminal bracket provided by an embodiment of the present utility model from another angle;

[0023] Figure 3 This is a right side view of the mobile terminal bracket provided by an embodiment of the present utility model;

[0024] Figure 4 It is a cross-sectional schematic diagram of a mobile terminal bracket provided by an embodiment of the present utility model;

[0025] Figure 5 This is a partial structural perspective diagram of a mobile terminal bracket provided by an embodiment of the present utility model;

[0026] Figure 6This is an exploded schematic diagram of a mobile terminal bracket provided in an embodiment of the present utility model;

[0027] Figure 7 This is another exploded schematic diagram of the mobile terminal bracket provided by an embodiment of the present utility model;

[0028] Figure 8 This is another exploded schematic diagram of the mobile terminal bracket provided by an embodiment of the present utility model;

[0029] Figure 9 This is another exploded schematic diagram of the mobile terminal bracket provided by an embodiment of the present utility model;

[0030] Figure 10 This is a partial structural exploded schematic diagram of a mobile terminal stand provided by an embodiment of the present utility model;

[0031] Figure 11 This is a schematic diagram of another partial structural decomposition of the mobile terminal bracket provided in an embodiment of the present utility model.

[0032] Description of the accompanying drawings:

[0033] 10. Base 11. Limiting wall

[0034] 12. Make way slot 13. First perforation

[0035] 14. Support plate 141, rotation hole

[0036] 142, third perforation 15, second perforation

[0037] 16. Accommodating cavity 17. Substrate

[0038] 171, second rotation connection portion 172, second rotation connection hole

[0039] 18. Sliding groove

[0040] 20. Clamping member 21. Second latching tooth

[0041] 22. Sliding plate 23. Clamping arm

[0042] 24. Elastic abutment 25. Linkage plate

[0043] 30. Locking member 31. First latching tooth

[0044] 32. Clamping convexity 33. Rotating shaft

[0045] 34. Positioning protrusion 35. Wire trough

[0046] 40. Backrest 50. Elastic member

[0047] 60. Rotating seat 61. Rotating groove

[0048] 62. Rotating portion 63. Stop plate portion

[0049] 64, mounting hole 65, first rotating connection part

[0050] 651, first rotating connection hole 70, base

[0051] 71, through hole 72, annular limiting portion

[0052] 73, slot 80, contact strip

[0053] 90. Adhesive portion 101. Rotating shaft. DETAILED DESCRIPTION

[0054] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0055] Please refer to Figures 1 to 11 As shown, it shows the specific structure of the mobile terminal bracket provided by the embodiment of the present utility model.

[0056] The mobile terminal holder includes a base 10 and a clamping member 20 that can move relative to the base 10 and is used to fix the mobile terminal on the base 10. The clamping member 20 is arranged on the base 10; a locking member 30 for locking the clamping member 20 is rotatably mounted on the base 10; as the locking member 30 rotates relative to the base 10, the locking member 30 locks or unlocks the clamping member 20. In this way, the clamping member 20 can be locked by the locking member 30 to prevent the clamping member 20 from loosening, so that the clamping member can firmly clamp the mobile phone and is less likely to fall.

[0057] The locking member 30 has a first locking portion, and the clamping member 20 has a second locking portion. As the locking member 30 rotates relative to the base 10, the first locking portion locks or unlocks the second locking portion.

[0058] A first limiting portion is provided on the locking member 30, and a second limiting portion for engaging with the first limiting portion is provided on the base 10; when the first limiting portion is engaged with the second limiting portion, the locking member 30 locks the clamping member 20; when the first limiting portion is disengaged from the second limiting portion, the locking member 30 releases the lock on the clamping member 20. In this way, through the cooperation of the first limiting portion and the second limiting portion, the locking member 30 can be restricted after rotating to a certain angle, thereby preventing the locking member 30 from rotating when the mobile phone is stably clamped, thereby preventing the clamping member 20 from loosening due to the rotation of the locking member 30.

[0059] The upper front side of the base 10 is provided with a clearance groove 12 for receiving the locking member 30. The locking member 30 fits within the clearance groove 12. The bottom of the clearance groove 12 is provided with a first through-hole 13 for the first limiting portion to pass through. The second limiting portion is provided at the edge of the first through-hole 13. When the locking member 30 rotates into the clearance groove 12, the first limiting portion passes through the first through-hole 13 and engages with the second limiting portion. In this embodiment, the first limiting portion is a latching protrusion 32, and the second limiting portion is a limiting wall 11.

[0060] A rotating shaft 33 is provided on both sides of the left and right sides of one end of the locking member 30 close to the clamping member 20, a support plate 14 is provided in the base 10, and a rotating hole 141 is provided on both sides of the upper end of the support plate 14, and the rotating shaft 33 can be rotatably positioned in the corresponding rotating hole 141, and a second through-hole 15 is provided at the bottom of the groove 12, and the second through-hole 15 is arranged at a distance from the first through-hole 13, and the second through-hole 15 is located on the rear side of the first through-hole 13, and a positioning protrusion 34 is provided forward of the end of the locking member 30 away from the clamping member 20, and the positioning protrusion 34 is provided with a wire groove 35 concave from top to bottom, and the left and right ends of the wire groove 35 pass through the left and right ends of the positioning protrusion 34, and the wire groove 35 can be used to clamp the charging cable or other items.

[0061] An elastic member 50 connected to the clamping member 20 is installed on the base 10, and the clamping member 20 fixes the mobile terminal on the base 10 under the elastic force of the elastic member 50; the clamping member 20 includes a sliding plate portion 22 and a clamping arm 23 connected to the upper end of the sliding plate portion 22, the sliding plate portion 22 can be slidably arranged in the base 10 back and forth, one end of the elastic member 50 abuts against the base 10, and the other end of the elastic member 50 abuts against the sliding plate portion 22, the clamping arm 23 extends out of the base 10, and the base 10 has a backrest member 40, and a clamping space for clamping the mobile terminal is formed between the clamping arm 23 and the backrest member 40, and the second locking portion is arranged on the sliding plate portion 22. Preferably, the elastic member 50 is a spring, so that the elastic force of the elastic member 50 can be overcome by pushing the clamping arm 23, so that the sliding plate portion 22 and the clamping arm 23 move together on the base 10 in a direction away from the backrest member 40. After the mobile terminal (such as a mobile phone) is placed in the clamping space, the elastic force of the elastic member 50 pushes the clamping arm 23 to press the mobile terminal (such as a mobile phone) against the backrest member 40, and then the locking member 30 is used to lock the clamping member 20 to prevent the clamping member 20 from moving.

[0062] The first locking portion 31 is provided on one end of the locking member 30, and the second locking portion is a plurality of second locking teeth 21 extending along the sliding direction of the sliding plate portion 22. As the locking member 30 rotates relative to the base 10, the first locking teeth 31 engage with the second locking teeth 21 to push the sliding plate portion 22 to move, so that after the elastic force of the elastic member 50 pushes the clamping arm 23 to press the mobile terminal (such as a mobile phone) against the backrest member 40, before the clamping member 20 is locked by rotating the locking member, the clamping arm 23 can move a certain distance toward the backrest member 14 and then lock the clamping arm 23, so as to utilize the elastically deformed elastic abutting member 24 to press the mobile terminal (such as a mobile phone) on the backrest member 40, thereby further enhancing the stability of clamping the mobile terminal (such as a mobile phone).

[0063] Specifically, the first latch tooth 31 is located on the lower side of the end of the locking member 30 close to the clamping member 20, and the latch protrusion 32 is located on the lower side of the end of the locking member 30 away from the clamping member 20, and the locking member 30 is arched; the middle part of the sliding plate portion 22 is protruded forward and extended with a linkage plate portion 25, the second latch tooth 21 is provided on the upper surface of the linkage plate portion 25, the support plate 14 is located above the linkage plate portion 25, and the support plate 14 is provided with a third through-hole 142 for the first latch tooth 31 to pass through.

[0064] The base 10 has a accommodating cavity 16 with an opening at the lower end, and a substrate 17 fixedly connected to the inner top wall of the accommodating cavity 16 is provided in the accommodating cavity 16. An installation space is formed between the substrate 17 and the inner top wall of the accommodating cavity 16. The support plate 14 and the sliding plate portion 22 are both installed in the installation space. The sliding plate portion 22 can slide above the substrate 17. The give way groove 12, the first through-hole 13, and the second through-hole 15 are all connected to the installation space. The upper surface of the base 10 is provided with a sliding groove 18 connected to the installation space. The sliding groove 18 extends along the front and rear directions. The clamping arm 23 can be slidably positioned in the sliding groove 18 back and forth. The lower end of the clamping arm 23 passes through the sliding groove 18 and extends into the installation space. The upper end of the clamping arm 23 extends upward out of the sliding groove 18. The lower end of the backrest 40 extends into the installation space, and the backrest 40 is tilted backward.

[0065] In order to facilitate adjustment of the angle at which the mobile terminal is mounted on the mobile terminal bracket, a rotating base 60 is installed at the lower end of the base 10, and the base 10 is rotatably connected to the rotating base 60 around a first axis, and a base 70 is installed at the lower end of the rotating base 60, and the rotating base 60 is rotatably connected to the base 70 around a second axis, the first axis and the second axis are perpendicular to each other, and the upper end of the rotating base 60 extends into the accommodating cavity 16, the rotating base 60 rotates in the horizontal direction, and the base 10 rotates in the vertical direction. After fixing the base 70 on a horizontal plane, the base 10 can be driven to rotate in the horizontal direction by rotating the rotating base 60, and the elevation angle of the base 10 can be adjusted by rotating the base 10 in the vertical direction, thereby facilitating adjustment of the angle of the base 10, so that the horizontal angle and elevation angle of the mobile terminal (such as a mobile phone) can be adjusted to meet the user's usage requirements.

[0066] The cam 62 is fixed to the locking cam 62 so that the locking cam 62 is locked and the locking cam 62 is locked.

[0067] The relative rotation between the rotating seat 60 and the base 70 is limited by an elastic positioning assembly. Specifically, the elastic positioning assembly is installed on the rotating seat 60. The elastic positioning assembly includes a spring (not shown in the figure) and a positioning member. The base 70 is provided with a plurality of positioning parts arranged in sequence along the rotation direction of the rotating seat 60 (in other embodiments, the elastic positioning assembly can be installed on the base 70, and the rotating seat 60 is provided with a plurality of positioning parts arranged in sequence along the rotation direction of the rotating seat 60). The positioning member is positioned in the positioning member under the action of the elastic force of the spring; when the rotating seat 60 rotates relative to the base 70, the positioning member can overcome the elastic force of the spring and disengage from the positioning member.

[0068] The rotating base 60 is provided with a mounting hole 64 with an opening at the lower end. The mounting hole 64 is connected to the rotating groove 61 and is located outside the rotating portion 62. A spring is installed in the mounting hole 64. One end of the positioning member extends into the mounting hole 64 and abuts the spring, while the other end of the positioning member extends outside the mounting hole 64. The positioning portion is a slot 73. A plurality of interconnected slots 73 are arranged in a circular pattern on the upper surface of the base 70 in a circumferential direction around the base 70. The positioning member is a ball (not shown in the figure). The ball is retained in the slot 73 by the elastic force of the spring to limit the rotation of the rotating base 60 relative to the base 70. When the rotating base 60 rotates relative to the base 70, the ball overcomes the elastic force of the spring and disengages from the slot 73. After the ball exits the slot 73, it can rotate relative to the base 70. This allows the mobile terminal to be fixed to the base 10 and the rotating base 60 to rotate horizontally together for angle adjustment.

[0069] In some embodiments, the lower end of the base 70 extends beyond the lower end of the rotating base 60. An adhesive portion 90 is provided at the lower end of the base 70 for attachment, and the adhesive portion 90 covers the stop plate portion 63. The adhesive portion 90 is preferably adhesive. For example, a mobile phone is clamped and fixed to the base 10 using the clamping member 20. The base 70 is attached to the center console of a car using the adhesive portion 90. The rotating base 60 is adjusted to rotate horizontally relative to the base 70, and the base 10 rotates with the rotating base 60. The elevation angle of the base 10 relative to the rotating base 60 is adjusted, thereby facilitating adjustment of the horizontal and elevation angles of the mobile phone on the center console.

[0070] The upper surface of the rotating seat 60 is provided with a first rotating connection part 65 extending in the left and right directions, and the lower end of the base plate 17 is provided with a second rotating connection part 171 extending in the left and right directions. The first rotating connection part 65 and the second rotating connection part 171 are connected by a rotating shaft 101. The first rotating connection part 65 has a first rotating connection hole 651 extending in the left and right directions, and the second rotating connection part 171 has a second rotating connection hole 172 extending in the left and right directions. The rotating shaft 101 is passed through the first rotating connection hole 651 and the second rotating connection hole 172. The cross-section of the middle part of the rotating shaft 101 is a regular hexagon. Correspondingly, the cross-section of the first rotating connection hole 651 is a regular hexagon. In this way, it can play a damping role in the rotation between the base 10 and the rotating seat 60, so that the base 10 can maintain the angle after rotating a certain angle relative to the rotating seat 60.

[0071] To sum up, the design focus of the present invention is that it mainly installs a locking part rotatably on the base, and as the locking part rotates relative to the base, the locking part locks or unlocks the clamping part, so that the clamping part can be locked by the locking part to prevent the clamping part from loosening, so that the clamping part firmly clamps the mobile phone, and the mobile phone is not easy to fall; and, the base is rotatably connected to a rotating base around a first axis, and the rotating base is rotatably connected to a base around a second axis, and the first axis is perpendicular to the second axis. In this way, after the base is fixed, the base can be driven to rotate in the first direction by rotating the rotating base, and the angle of the base in the second direction can be adjusted by rotating the base, thereby facilitating the adjustment of the angle of the base, so that the angle of the mobile terminal (such as a mobile phone) can be adjusted to meet the user's usage needs.

[0072] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A mobile terminal holder, comprising a base and a clamping member movable relative to the base for fixing the mobile terminal to the base, wherein the clamping member is disposed on the base; characterized in that: A locking member for locking the clamping member is rotatably mounted on the base; As the locking member rotates relative to the base, the locking member locks or unlocks the clamping member.

2. The mobile terminal holder according to claim 1, characterized in that: The locking member has a first locking portion, and the clamping member has a second locking portion; as the locking member rotates relative to the base, the first locking portion locks or unlocks the second locking portion.

3. The mobile terminal holder according to claim 2, wherein: An elastic member connected to the clamping member is mounted on the base, and the clamping member fixes the mobile terminal on the base under the elastic force of the elastic member.

4. The mobile terminal holder according to claim 3, characterized in that: The clamping member includes a sliding plate portion and a clamping arm connected to the upper end of the sliding plate portion, the sliding plate portion can be slidably arranged in the base, one end of the elastic member abuts the base, and the other end of the elastic member abuts the sliding plate portion, the clamping arm extends out of the base, and the base is provided with a backrest member, a clamping space for clamping the mobile terminal is formed between the clamping arm and the backrest member, and the second locking portion is provided on the sliding plate portion.

5. The mobile terminal holder according to claim 4, characterized in that: The clamping arm is provided with an elastic abutment member for pressing the mobile terminal on the side facing the backrest member, the first locking portion is a first latching tooth provided on one end of the locking portion, and the second locking portion is a plurality of second latching teeth extending along the sliding direction of the sliding plate portion, which rotate with the locking portion relative to the base; the first latching tooth and the second latching tooth are engaged and transmitted to push the sliding plate portion to move.

6. The mobile terminal holder according to claim 1, characterized in that: A first limiting portion is provided on the locking member, and a second limiting portion for engaging with the first limiting portion is provided on the base; when the first limiting portion is engaged with the second limiting portion, the locking member locks the clamping member; when the first limiting portion is disengaged from the second limiting portion, the locking member releases the lock on the clamping member.

7. The mobile terminal holder according to claim 6, characterized in that: The front side of the upper end of the base is provided with a clearance groove adapted to the locking member, the bottom of the clearance groove is provided with a first through-hole for the first limiting portion to pass through, and the second limiting portion is provided at the edge of the first through-hole; When the locking member is rotated into the clearance groove, the first limiting portion passes through the first through hole and is engaged with the second limiting portion.

8. The mobile terminal holder according to claim 1, characterized in that: A rotating seat is installed at the lower end of the base, and the base is rotatably connected to the rotating seat around a first axis.

9. The mobile terminal holder according to claim 8, characterized in that: A base is installed at the lower end of the rotating seat. The rotating seat is rotatably connected to the base around a second axis. The first axis and the second axis are perpendicular to each other.

10. The mobile terminal holder according to claim 9, characterized in that: The relative rotation between the rotating seat and the base is limited by an elastic positioning assembly, and the elastic positioning assembly includes a spring and a positioning member. The rotating seat or the base is provided with a plurality of positioning parts arranged in sequence along the rotation direction of the rotating seat, and the positioning member is positioned in the positioning part under the elastic force of the spring; when the rotating seat rotates relative to the base, the positioning member can overcome the elastic force of the spring and disengage from the positioning part.