Interlock mechanism and telescopic rod

Abstract

The utility model discloses a kind of inner locking mechanism and telescopic rod with it, the inner locking mechanism is used for telescopic rod, the inner locking mechanism includes: connecting seat, tensioner and locking member, the tensioner is thread transmission connection with the connecting seat;The locking member connects the connecting seat, and is set around the tensioner, wherein, the tensioner is movably cooperated with the tensioner along the axis of the connecting seat, and the locking member can be driven elastic deformation and expand outside.According to the inner locking mechanism of the utility model embodiment, by setting the tensioner of thread transmission connection with connecting seat, when operating inner locking mechanism, tensioner moves in locking mechanism to realize locking and unlocking, after locking, the predetermined length of telescopic rod is not changed, so as to facilitate user to install telescopic rod.

Description

Technical Field

[0001] This utility model relates to the field of household goods technology, and in particular to an internal locking mechanism and a telescopic rod having the internal locking mechanism. Background Technology

[0002] No-drill telescopic rods typically consist of an inner rod, an outer rod, and bases at both ends. Length adjustment and locking are achieved through an internal locking structure between the inner and outer rods. However, in related technologies, the internal locking structure generally has two design orientations, but both suffer from stroke control issues during the locking process. This results in unreliable wall-clamping during actual use, requiring repeated adjustments by the user and causing inconvenience in practical applications. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide an internal locking mechanism in which a tensioning member moves within the locking mechanism to achieve locking and unlocking. After locking, the predetermined length of the telescopic rod will not be changed, thus facilitating user installation of the telescopic rod.

[0004] Another objective of this invention is to provide a telescopic rod that includes the aforementioned internal locking mechanism.

[0005] An internal locking mechanism according to an embodiment of the present utility model is used for a telescopic rod. The internal locking mechanism includes: a connecting seat, a tensioning member, and a locking member. The tensioning member is threadedly connected to the connecting seat. The locking member is connected to the connecting seat and is arranged around the tensioning member. The tensioning member is movably engaged with the tensioning member along the axis of the connecting seat and can drive the locking member to elastically deform and expand outward.

[0006] According to the internal locking mechanism of this utility model embodiment, by setting a tensioning member that is threadedly connected to the connecting seat, when the internal locking mechanism is operated, the tensioning member moves within the locking mechanism to achieve locking and unlocking. After locking, the predetermined length of the telescopic rod will not be changed, thereby facilitating the user to install the telescopic rod.

[0007] In addition, the internal locking mechanism according to the above embodiments of the present invention may also have the following additional technical features:

[0008] In some examples of this utility model, the locking member is provided with a guide groove extending along the axis, and the tensioning member is provided with a slider, which is slidably disposed in the guide groove along the axis.

[0009] In some examples of this utility model, the locking member is provided with at least one ductile opening extending along the axis, the ductile opening being disposed around the guide groove.

[0010] In some examples of this utility model, the locking member is provided with at least two spaced guide grooves, and the tensioning member is provided with at least two spaced sliders.

[0011] In some examples of this utility model, the locking member has at least two of the variable openings, and the variable openings and the guide groove are arranged circumferentially spaced along the locking member.

[0012] In some examples of this utility model, the accommodative openings are provided in multiple circumferential intervals along the locking member.

[0013] In some examples of this utility model, the outer periphery of the connecting seat is provided with a first thread, the tensioning member is provided with a through groove, the through groove is provided with a second thread, the connecting seat passes through the through groove, and the second thread cooperates with the first thread to convert the rotational movement of the connecting seat into the movement of the tensioning member along the axis of the connecting seat.

[0014] In some examples of this invention, the tensioner is configured as a tapered shape that gradually expands outward in a direction away from the locking member along the axis.

[0015] In some examples of this invention, the locking element is configured as a tapered shape that gradually expands outward in a direction away from the locking element.

[0016] In some examples of this utility model, the outer periphery of the locking member is provided with a plurality of protrusions arranged at intervals along the circumference of the locking member, and the plurality of protrusions extend along the axis of the locking member.

[0017] In some examples of this utility model, the connecting seat includes a connecting segment and a driving segment, the connecting segment is connected to the driving segment, the diameter of the driving segment is smaller than that of the connecting segment, and a limiting surface is formed between the driving segment and the connecting segment to support the tensioning member along the axis.

[0018] In some examples of this utility model, the connecting seat includes a driving section and a fixed section, the fixed section is connected to the driving section, and the inner locking mechanism further includes a limiting member, the limiting member is disposed on the fixed section, and the limiting member restricts the locking member and / or the tensioning member along the axis of the connecting seat.

[0019] In some examples of this utility model, the outer periphery of the fixed section is provided with a third thread, the limiting member is a nut, and the nut is engaged with the third thread.

[0020] In some examples of this utility model, the diameter of the fixed segment is smaller than that of the driving segment, and an abutment surface is formed between the driving segment and the fixed segment to limit the limiting member along the axis.

[0021] The telescopic rod according to an embodiment of the present utility model includes: a first rod body, a second rod body, and the aforementioned internal locking mechanism. At least a portion of the first rod body is telescopically disposed within the second rod body. The internal locking mechanism is connected to the first rod body and located within the second rod body. The locking member can be driven to expand outward by the tensioning member to lock the first rod body and the second rod body. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the internal locking mechanism in some embodiments of this utility model;

[0023] Figure 2 This is a structural assembly drawing of the internal locking mechanism in some embodiments of this utility model;

[0024] Figure 3 This is a partial structural schematic diagram of the telescopic rod in some embodiments of the present invention (showing that the inner locking mechanism is connected to the first rod body, and the tensioning member is in a relaxed state).

[0025] Figure 4 This is a partial structural schematic diagram of the telescopic rod in some embodiments of the present invention (showing that the inner locking mechanism is connected to the first rod body, and the tensioning member is in the locked state).

[0026] Figure 5 This is a partial cross-sectional view of the telescopic rod in some embodiments of this utility model (showing that the inner locking mechanism is connected to the first rod body and located in the second rod body, and the tensioning member is in a relaxed state).

[0027] Figure 6 This is a partial cross-sectional view of the telescopic rod in some embodiments of the present invention (showing that the inner locking mechanism is connected to the first rod body and located in the second rod body, and the tensioning member is in the locked state).

[0028] Figure 7 This is a structural schematic diagram of the internal locking mechanism in some other embodiments of this utility model;

[0029] Figure 8 This is a structural assembly diagram of the internal locking mechanism in some other embodiments of this utility model;

[0030] Figure 9 This is a partial cross-sectional view of the telescopic rod in some other embodiments of the present invention (showing that the inner locking mechanism is connected to the first rod body and located in the second rod body, and the tensioning member is in a relaxed state).

[0031] Figure 10 This is a partial cross-sectional view of the telescopic rod in some other embodiments of the present invention (showing that the inner locking mechanism is connected to the first rod body and located in the second rod body, and the tensioning member is in the locked state).

[0032] Figure 11This is a schematic diagram of the telescopic rod in some embodiments of this utility model;

[0033] Figure 12 This is a cross-sectional view of the telescopic rod in some embodiments of the present invention (showing the internal locking mechanism and the fine-tuning mechanism);

[0034] Figure 13 This is a schematic diagram of the telescopic rod in some embodiments of the present invention (showing the internal locking mechanism);

[0035] Figure 14 yes Figure 13 A magnified view of circle A in the middle.

[0036] Figure label:

[0037] 100. Internal locking mechanism; 10. Connecting seat; 11. Connecting section; 12. Driving section; 13. Fixing section; 110. Limiting surface; 120. Abutting surface; 20. Locking element; 201. Guide groove; 202. Capacitive opening; 21. Protrusion; 30. Tensioning element; 31. Slider; 301. Through groove; 40. Limiting element; 1000. Telescopic rod; 200. First rod body; 300. Second rod body; 400. Fine-tuning mechanism; 410. Fine-tuning tube; 420. Connecting element; 500. Seat body. Detailed Implementation

[0038] In related technologies, drill-free telescopic rods typically include an inner rod, an outer rod, and bases at both ends. Length adjustment and locking are achieved through an internal locking structure between the inner and outer rods. However, in these technologies, the internal locking structure generally has two design orientations, but both suffer from stroke control issues during the locking process. This results in unreliable wall-clamping during actual use, requiring repeated adjustments by the user and causing inconvenience in practical applications.

[0039] Specifically, one design approach involves the inner locking taper of the inner locking structure facing the outer rod: when the inner rod is tightened, it retracts inward, forcing a shortening of the preset rod length. If the fine-tuning stroke is insufficient, the telescopic rod cannot fully engage with the wall. Another design approach involves the inner locking taper of the inner locking structure facing the inner rod: when the inner rod is tightened, it pushes outward, consuming the reserved fine-tuning stroke. This results in the rod engaging with the wall before being fully locked, and the inner rod, due to the force, cannot rotate, leading to locking failure.

[0040] The aforementioned defects result in significant deficiencies in the length adjustment and locking reliability of existing telescopic poles. There is an urgent need for an internal locking mechanism that, once the predetermined length of the telescopic pole is determined, will not change the predetermined length after locking, thereby facilitating user installation of the telescopic pole and improving the structural stability of the telescopic pole after installation.

[0041] Therefore, this utility model proposes an internal locking mechanism 100 for a telescopic rod 1000.

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0043] Combination Figures 1 to 14 According to the embodiment of the present utility model, the inner locking mechanism 100 is used for the telescopic rod 1000. After the telescopic rod 1000 is adjusted to extend or retract, it can be locked inside the telescopic rod 1000 so that the telescopic rod 1000 is kept at the adjusted length, which is convenient for the user.

[0044] Specifically, the inner locking mechanism 100 includes: a connecting seat 10, a tensioning member 30, and a locking member 20. The tensioning member 30 is threadedly connected to the connecting seat 10, and the locking member 20 is connected to the connecting seat 10 and arranged around the tensioning member 30. The tensioning member 30 is movably engaged with the tensioning member 30 along the axis of the connecting seat 10 and can drive the locking member 20 to elastically deform and expand outward.

[0045] Specifically, the tensioning member 30 is connected to the connecting seat 10 via a transmission connection. The connecting seat 10 can both connect the tensioning member 30 and drive the locking member 20 to move. When the connecting seat 10 rotates, it can drive the tensioning member 30 to move along the axis of the connecting seat 10, thereby adjusting the inner locking mechanism 100. When the tensioning member 30 moves, it can drive the locking member 20 to elastically deform and expand outward. The expanded locking member 20 can abut against the inner side of the telescopic rod 1000, thereby fixing the relative position between the two rods of the telescopic rod 1000 that adjust the telescopic length, achieving locking after the length of the telescopic rod 1000 is adjusted. When it is necessary to adjust the length of the telescopic rod 1000, the connecting seat 10 can be rotated in the opposite direction, driving the tensioning member 30 to move in the opposite direction, thereby causing the locking member 20 to lose its elastic deformation and outward expansion force, allowing the two rods of the telescopic rod 1000 to move relative to each other, thus achieving telescopic length adjustment.

[0046] When the connecting seat 10 rotates to lock, the inner locking mechanism 100 can be locked by driving the tensioning member 30 to move on the axis of the connecting seat 10. The connecting seat 10 itself does not move along the axis, that is, the inner locking mechanism 100 moves internally to lock or unlock. Therefore, when the inner locking mechanism 100 is driven to lock, the relative distance or relative position between the two rods of the telescopic rod 1000 does not change.

[0047] For example, in practical applications, the connecting seat 10 can be fixedly connected to one of the rods of the telescopic rod 1000. Rotating this rod provides a driving force to the connecting seat 10, which in turn drives the tensioning member 30 to move along its axis. During this movement, the tensioning member 30 can move inwards towards the locking member 20, causing it to elastically deform and expand outwards. The expanded locking member 20 then abuts against the inner side of the other rod of the telescopic rod 1000, preventing relative movement between the two rods and thus locking the telescopic rod 1000. When the tensioning member 30 moves away from the locking member 20, the force driving the locking member 20 to expand outwards decreases or disappears. Consequently, the locking member 20 cannot abut against the inner side of the other rod, or the abutting force decreases, allowing for unlocking.

[0048] According to the embodiment of the present utility model, the inner locking mechanism 100 is provided with a tensioning member 30 that is threadedly connected to the connecting seat 10. When the inner locking mechanism 100 is operated, the tensioning member 30 moves within the locking mechanism to achieve locking and unlocking. After locking, the predetermined length of the telescopic rod 1000 will not be changed, thereby facilitating the user to install the telescopic rod 1000.

[0049] It should be noted that when the inner locking mechanism 100 is applied to the telescopic rod 1000, the inner locking mechanism 100 can be connected to one rod body, and the other rod body has a receiving cavity. The inner locking mechanism 100 extends into the receiving cavity, and static friction is formed between the locking member 20 and the inner wall of the receiving cavity. In this way, when the tensioning member 30 moves along the axis and drives the locking member 20 to elastically deform and expand outward, the locking member 20 can only expand outward and is not easy to move with the movement of the tensioning member 30, which is beneficial to improving the locking effect and operational stability.

[0050] In practical applications, the inner locking mechanism 100 has a locked state and an unlocked state. In the locked state, the inner locking mechanism 100 is interference-fitted with the telescopic rod 1000. In the unlocked state, static friction is generated between the inner locking mechanism 100 and the telescopic rod 1000.

[0051] Combination Figure 1 and Figure 3 In some embodiments of this utility model, the locking member 20 is provided with a guide groove 201 extending along the axis, and the tensioning member 30 is provided with a slider 31, which is slidably disposed in the guide groove 201 along the axis. Specifically, the guide groove 201 can limit the movement path of the tensioning member 30, which helps to improve the stability of the movement of the tensioning member 30 and improve the locking or unlocking effect. In addition, the guide groove 201 can also restrict the slider 31 circumferentially. When the tensioning member 30 is threadedly driven with the connecting seat 10, it can restrict the rotation of the slider 31, thereby ensuring the movement of the tensioning member along the axis and improving the stability of operation.

[0052] More specifically, one end of the guide groove 201 is open, and the slider 31 can enter the guide groove 201 from the open end of the guide groove 201. Thus, the locking member 20 and the tensioning member 30 can be separate structures, which can be transported and manufactured separately, making assembly and manufacturing easier.

[0053] Combination Figure 2 In some embodiments of this utility model, the locking member 20 is provided with at least one axially extending accommodative opening 202, which is used to allow the locking member 20 to be deformed by the lateral movement and compression of the tensioning member 30. The accommodative opening 202 can provide deformation space for the elastic deformation of the locking member 20 when it elastically deforms outward, which is conducive to realizing the deformation of the locking member 20, making the locking member 20 easy to deform, thereby facilitating user operation.

[0054] Furthermore, the variable opening 202 is located around the guide groove 201. In this way, during the sliding process of the slider 31 in the guide groove 201, the variable opening 202 is close to the guide groove 201 and is easily affected by the driving force when the slider 31 moves in the guide groove 201, thus providing deformation space for the deformation of the locking member 20, which is beneficial to improving the locking effect.

[0055] Furthermore, in some embodiments of this utility model, the locking member 20 is provided with at least two spaced guide grooves 201, and the tensioning member 30 is provided with at least two spaced sliders 31. Each slider 31 can cooperate with the corresponding guide groove 201. Each slider 31 can be arranged spaced along the circumference of the tensioning member 30, which is beneficial to evenly distribute the driving force on the body or circumference of the tensioning member 30, thereby improving the driving effect and running stability of the tensioning member 30.

[0056] Optionally, at least two accommodative openings 202 are provided, which are arranged circumferentially with the guide groove 201. By increasing the accommodative openings 202, the deformation space of the locking member 20 can be increased, thereby improving the outward expansion effect of the locking member 20 and facilitating locking. The two accommodative openings 202 are respectively located around the guide groove 201. When the slider 31 drives the locking member 20 to deform, both accommodative openings 202 around the guide groove 201 can provide deformation space. Therefore, when the tensioning member 30 drives the locking member 20 to deform and expand outward, the locking member 20 can respond quickly, which helps to improve the locking effect.

[0057] Alternatively, multiple variable openings 202 can be provided at intervals along the circumference of the locking member 20, so that the outer periphery of the locking member 20 can expand outward evenly, which is beneficial to improving the cooperation effect with the telescopic rod 1000 and improving the locking effect.

[0058] It should be noted that at least two can be two or more, such as two, three, or four. In practical applications, the arrangement can be reasonably made according to parameters such as the size of the inner locking mechanism 100, and this utility model is not limited thereto.

[0059] Combination Figure 2 In some embodiments of this utility model, the outer periphery of the connecting seat 10 is provided with a first thread, the tensioning member 30 is provided with a through groove 301, and the through groove 301 is provided with a second thread. The connecting seat 10 passes through the through groove 301, and the second thread cooperates with the first thread to convert the rotational movement of the connecting seat 10 into the movement of the tensioning member 30 along the axis of the connecting seat 10. Thus, by rotating the connecting seat 10, the movement of the tensioning member 30 along the axis of the connecting seat 10 can be realized, converting the rotational movement of the connecting seat 10 into the linear movement of the tensioning member 30, thereby enabling locking and unlocking operations to be completed within the inner locking mechanism 100.

[0060] Specifically, by providing threads on the outer side of the connecting seat 10 and the inner side of the tensioner 30, a threaded transmission connection between the connecting seat 10 and the tensioner 30 can be achieved. The tensioner 30 is sleeved on the connecting seat 10, which facilitates assembly and improves structural compactness. In practical applications, when locking, rotating the connecting seat 10 causes the tensioner 30 to move along the axis and extend into the locking member 20, driving the locking member 20 to deform and expand outward. When unlocking, rotating the connecting seat 10 in the opposite direction causes the tensioner 30 to move in the opposite axial direction, gradually moving away from the locking member 20, thereby restoring the elastically deformable locking member 20 from its expanded state to its normal state.

[0061] Optionally, when locking, the connector 10 can be rotated clockwise, and when unlocking, the connector 10 can be rotated counterclockwise; or when locking, the connector 10 can be rotated counterclockwise, and when unlocking, the connector 10 can be rotated clockwise.

[0062] In some embodiments of this utility model, the tensioning member 30 is configured as a tapered shape that gradually expands outward in the direction away from the locking member 20. In this way, as the moving distance of the tensioning member 30 along the axis gradually increases, the outward driving force provided by the tensioning member 30 to the locking member 20 also gradually increases, so that the locking member can gradually improve the stability of the locking and facilitate user adjustment.

[0063] Optionally, the locking member 20 is configured as a tapered shape that gradually expands outward in the direction away from the locking member 20, so that the locking member 20 can cooperate with the tensioning member 30 to achieve a gradually tightening effect when locking and a gradually loosening effect when unlocking.

[0064] Combination Figure 2In some embodiments of this utility model, the outer periphery of the locking member 20 is provided with a plurality of protrusions 21 arranged at intervals along the circumference of the locking member 20. The plurality of protrusions 21 extend along the axis of the locking member 20. The protrusions 21 can cooperate with the telescopic rod body to increase the friction when the locking member 20 contacts the rod body, thereby improving the stability of the locking member 20 cooperating with the telescopic rod 1000 or the telescopic rod 1000 body.

[0065] Alternatively, other structures to increase friction can be provided on the outer peripheral surface of the locking member 20, such as making the outer peripheral surface of the locking member 20 a rough surface, or making a rough surface on the outside of the protrusion 21. In the unlocked state, static friction can be achieved between the locking member 20 and the telescopic rod 1000; after locking, the stability of the locked state can be improved.

[0066] Combination Figure 2 and Figure 5 In some embodiments of this utility model, the connecting seat 10 includes a connecting section 11 and a driving section 12, with the connecting section 11 connected to the driving section 12. Specifically, the connecting section 11 can be used for external connection to facilitate assembly and application of driving force; for example, the connecting section 11 can be easily fixedly connected to the rod body of the telescopic rod 1000. The driving section 12 can cooperate with the tensioning member 30, which can move on the driving section 12.

[0067] In addition, combined Figure 3 The diameter of the drive section 12 is smaller than that of the connecting section 11. A limiting surface 110 is constructed between the drive section 12 and the connecting section 11 to support the tensioner 30 along the axis. The limiting surface 110 can be opposite to the tensioner 30 along the axis of the connecting seat 10, which can limit and support the tensioner 30, and define the end position of the tensioner 30 moving along the axis, which is beneficial to improving the structural stability.

[0068] Combination Figure 2 and Figure 5 In some embodiments of this utility model, the connecting seat 10 includes a driving section 12 and a fixed section 13, the fixed section 13 being connected to the driving section 12. The inner locking mechanism 100 also includes a limiting member 40, which is disposed on the fixed section 13. The limiting member 40 restricts the locking member 20 and / or the tensioning member 30 along the axis of the connecting seat 10, thereby preventing the locking member 20 or the tensioning member 30 from coming out. That is, the fixed section 13 is used to assemble the limiting member 40, and the limiting member 40 can limit the position of the other end of the tensioning member 30 that moves along the axis, which is beneficial to improving the stability during operation.

[0069] Furthermore, in some embodiments of this utility model, the outer periphery of the fixed section 13 is provided with a third thread, and the limiting member 40 is a nut. The nut engages with the third thread, which facilitates the assembly of the limiting member 40 onto the fixed section 13 and achieves a fixed connection of the limiting member 40 on the fixed section 13. In addition, by constructing the fixed section 13 and the limiting member 40 in a threaded transmission engagement form, it is also convenient to adjust the position of the limiting member 40 on the fixed section 13. Thus, the position of the limiting member 40 can be adjusted according to the actual application, thereby improving the flexibility of the inner locking mechanism 100 in use.

[0070] Specifically, the locking member 20 has a first end and a second end along the axial direction, and the tensioning member 30 has a first end and a second end along the axial direction, wherein the first end is a small conical end and the second end is a large conical end. In actual arrangement, the first end and the second end of the locking member 20 and the tensioning member 30 are arranged in the same direction along the axial direction to facilitate mutual cooperation.

[0071] Combination Figure 1 and Figure 6 In one embodiment of this utility model, the first ends of the locking member 20 and the tensioning member 30 can both face to the left; the limiting member 40 stops the locking member 20, or in other words, the first end or small end of the locking member 20 is opposite to the limiting member 40, and the limiting surface 110 is opposite to the tensioning member 30 or the second end or large end of the tensioning member 30.

[0072] Combination Figure 7 and Figure 9 In another embodiment of this utility model, the first ends of the locking member 20 and the tensioning member 30 can both face to the right. The limiting member 40 stops the tensioning member 30, or in other words, the second end or the large end of the tensioning member 30 is opposite to the limiting member 40, and the limiting surface 110 is opposite to the locking member 20 or the first end or the small end of the locking member 20.

[0073] Both arrangement methods can achieve locking and unlocking effects, but when using the above two embodiments, the rotation adjustment direction of the connecting seat may be opposite when locking and unlocking.

[0074] For example, in the first embodiment, locking can be achieved by rotating the connector 10 clockwise, and unlocking can be achieved by rotating the connector 10 counterclockwise. In the second embodiment, locking can be achieved by rotating the connector 10 counterclockwise, and unlocking can be achieved by rotating the connector 10 clockwise.

[0075] Combination Figure 2 In some embodiments of this utility model, the diameter of the fixed section 13 is smaller than that of the driving section 12. An abutment surface 120 is formed between the driving section 12 and the fixed section 13 along the axis to limit the limiting member 40. The abutment surface 120 can limit the limiting member 40 and provide support for the limiting member 40, thereby improving the stability of the limiting member 40 after installation.

[0076] Specifically, in combination Figure 2 The connecting seat 10 includes a connecting section 11, a driving section 12, and a fixing section 13 connected sequentially along the axial direction. From the connecting section 11 to the fixing section 13, the outer diameters of the connecting section 11, the driving section 12, and the fixing section 13 decrease sequentially, forming a gradually inwardly recessed step structure on the connecting seat 10. This facilitates assembly and helps improve the structural stability of the assembled components.

[0077] Combination Figures 11 to 14 The telescopic rod 1000 according to an embodiment of the present invention includes: a first rod body 200, a second rod body 300, and the aforementioned inner locking mechanism 100. At least a portion of the first rod body 200 is telescopically disposed within the second rod body 300. The inner locking mechanism 100 is connected to the first rod body 200 and located within the second rod body 300. The locking member 20 can be driven to expand outward by the tensioning member 30 to lock the first rod body 200 and the second rod body 300. The first rod body 200 can extend and retract relative to the second rod body 300 to achieve length adjustment of the telescopic rod 1000, or the first rod body 200 can be extended further into the second rod body 300 to achieve storage of the telescopic rod 1000.

[0078] At least a portion of the first rod 200 is retractably disposed within the second rod 300, which can extend the length of the telescopic rod 1000, and the length is adjustable, making it convenient for users to apply the telescopic rod 1000 to various scenarios. Specifically, users can adjust the length of the telescopic rod 1000 by adjusting the telescopic position of the first rod 200 within the second rod 300 according to the actual application. After the length of the telescopic rod 1000 is determined, the user can lock the relative position between the first rod 200 and the second rod 300 through the inner locking mechanism 100, so that the first rod 200 and the second rod 300 are relatively fixed, allowing the telescopic rod 1000 to stably maintain the adjusted predetermined length, facilitating user assembly and use.

[0079] Specifically, the telescopic rod 1000 also includes the aforementioned inner locking mechanism 100. The inner locking mechanism 100 is connected to the first rod body 200 and can move with the first rod body 200. The inner locking mechanism 100 is opposite to the inner side of the second rod body 300 along the radial direction of the telescopic rod 1000. When locking is required, the inner locking mechanism 100 can cooperate with the inner side of the second rod body 300, so that after the first rod body 200 is adjusted, the first rod body 200 and the second rod body 300 can be fixed in a predetermined position or the locking between the first rod body 200 and the second rod body 300 can be achieved.

[0080] Optionally, the first rod 200 can be detachably connected to the second rod 300, meaning the first rod 200 can extend into or exit from the second rod 300, for example, when the first rod 200 moves away from the second rod 300. Alternatively, it can be non-detachably connected to the second rod 300, for example, the first rod 200 may have a limiting structure at one end, or the second rod 300 may have a limiting member 40 at one end to restrict the first rod 200 from exiting.

[0081] Combination Figure 11 The telescopic rod 1000 also includes a base 500, which is connected to one end of the first rod 200 and the second rod 300 respectively. After the telescopic length of the first rod 200 and the second rod 300 is adjusted, the base 500 located at opposite ends of the telescopic rod 1000 can be supported between the two walls.

[0082] Furthermore, combined Figure 12 In some embodiments of the utility model, the telescopic rod 1000 further includes a fine-tuning mechanism 400. The fine-tuning mechanism 400 can tighten the adjusted telescopic rod 1000 against the wall. Specifically, the fine-tuning mechanism 400 includes a fine-tuning tube 410 and a connector 420. The fine-tuning tube 410 is sleeved on the outside of the first rod body 200. The first end of the connector 420 is connected to the first rod body 200, and the other end extends out of the first rod body 200 and is threadedly engaged with the fine-tuning tube 410. A portion of the fine-tuning tube 410 is rotatably disposed between the seat 500 and the connector 420. The connector 420 has an external thread, and the fine-tuning tube 410 has an internal thread. The internal thread engages with the external thread. When the fine-tuning tube 410 is rotated, it can move along the axis of the telescopic rod 1000 to appropriately increase or decrease the distance between the two seats 500 of the telescopic rod 1000, thereby achieving fine-tuning and facilitating stable support of the telescopic rod 1000 between the two walls.

[0083] The following describes two specific embodiments of the present invention with reference to the accompanying drawings: an inner locking mechanism 100 and a telescopic rod 1000 using the inner locking mechanism 100.

[0084] According to a specific embodiment of the present invention, the locking member 20 may be an elastic cone sleeve, and the tensioning member 30 may be a tensioning cone.

[0085] An internal locking mechanism 100 according to some embodiments of the present invention.

[0086] Example 1: Combination Figures 1 to 6The telescopic rod 1000 includes: a first rod body 200 and a second rod body 300. The first rod body 200 is sleeved in the second rod body 300. One end of the first rod body 200 is provided with an inner locking mechanism 100, which allows the first rod body 200 to be locked after it extends a certain length relative to the second rod body 300.

[0087] The inner locking mechanism 100 includes an elastic cone sleeve (i.e., locking element 20), a tensioning cone (i.e., tensioning element 30), and a connecting seat 10. The elastic cone sleeve forms friction with the inner wall of the second rod 300, and can only move axially and will not rotate arbitrarily in the radial / circumferential direction, so that the locking element 20 can be driven by the tensioning element 30 to achieve outward expansion.

[0088] The first rod 200 includes an extension end that extends into the second rod 300. The connecting seat 10 includes a connecting section 11, a driving section 12, and a fixing section 13. The connecting section 11 cooperates with the extension end of the first rod 200 to achieve a fixed connection between the connecting seat 10 and the first rod 200.

[0089] Specifically, the outer surface of the tensioning cone has a tapered shape that gradually increases in size. Guide sliders 31 are provided on the tapered surface, preferably two or more, and evenly distributed across the tapered surface. A threaded through-hole is located at the center of the tensioning cone, which is fitted onto the driving section 12 of the connecting seat 10 and can move spirally on the driving section 12. The interior of the elastic cone sleeve has a tapered surface that matches the tapered surface of the tensioning cone. A capacity opening 202 is provided on the axial surface of the elastic cone sleeve's shell, allowing the elastic cone sleeve to elastically deform and expand outwards under external force.

[0090] In addition, the outer peripheral wall of the elastic cone sleeve is provided with a guide groove 201 in the axial direction. The guide groove 201 cooperates with the slider 31 to restrict the radial or circumferential rotation of the tensioning cone.

[0091] When the first rod 200 is rotated, the tensioning cone, driven by the connecting seat 10 and limited by the slider 31 and the guide groove 201, converts the rotational motion of the connecting seat 10 into axial displacement on the connecting seat 10 or the driving section 12. The tensioning cone is axially displaced into the interior of the elastic cone sleeve, thereby opening the elastic cone sleeve and realizing elastic deformation expansion. This strengthens the contact force between the elastic cone sleeve and the inner wall of the second rod 300, thereby locking it in place.

[0092] Because the axial movement of the tensioning cone expands the elastic cone sleeve, the first rod 200 will not shrink inward or push outward in the axial direction, thus solving the technical problems existing in the above-mentioned related technologies.

[0093] Furthermore, in addition to the above structure, the inner locking mechanism 100 also includes a limiting member 40, which is disposed on the fixed section 13 to prevent the elastic cone sleeve from falling off. The outer edge of the large end of the elastic cone sleeve contacts the inner wall of the second rod 300 and maintains a certain amount of deformation. The elastic cone sleeve is also provided with a friction strip (i.e., a protrusion 21), which can increase the friction between the elastic cone sleeve and the inner wall of the second rod 300.

[0094] An inner locking mechanism 100 according to other embodiments of the present invention.

[0095] Example 2: Combination Figures 7 to 10 The tensioning member 30 and the locking member 20 of the inner locking mechanism 100 can also be configured in the opposite form to that of Embodiment 1 above, that is, the tensioning cone and the elastic cone sleeve gradually expand outward from the end away from the insertion end of the first rod 200 or the connecting section 11 of the connecting seat 10. In other words, the small end of the tensioning cone and the elastic cone sleeve faces the insertion end of the first rod 200 or the connecting section 11 of the connecting seat 10.

[0096] In other words, the taper direction of the tensioning cone and the elastic cone sleeve in Embodiment 2 is opposite to that in Embodiment 1. In application, the tensioning cone is still connected to the connecting seat 10 by a threaded drive, and the guide groove 201 of the elastic cone sleeve cooperates with the slider 31 on the tensioning cone to realize the elastic deformation and outward expansion of the tensioning cone sleeve.

[0097] In summary, the working principle of the inner locking mechanism 100 according to the embodiment of this utility model is as follows: Since the elastic cone sleeve is always in contact with the inner wall of the second rod 300 of the telescopic rod 1000 at the initial moment, when the connecting seat 10, which is fixedly connected to the first rod 200, rotates inward, the tensioning cone is threadedly connected to the connecting seat 10, so as to convert the rotation of the first rod 200 of the telescopic rod 1000 into the axial movement of the tensioning cone.

[0098] Combination Figure 6 The tensioning cone moves to the left, compressing the interior of the elastic cone sleeve, causing the outer edge of the large end to expand outward, thus strengthening the preload between the elastic cone sleeve and the inner wall of the second rod 300. Due to the action of the external slider 31 of the tensioning cone, the elastic cone sleeve can only deform at its large end and cannot rotate. Therefore, when the first rod 200 and the second rod 300 are locked, the phenomenon of the inner rod "extending outward" or "retracting inward" in the overall length direction, as seen in related technologies, will not occur.

[0099] The inner locking mechanism 100, under the guidance structure constructed by the guide groove 201 and the slider 31, ensures that the first rod 200 of the telescopic rod 1000 will not move forward or backward due to "spiral motion".

[0100] In the description of this utility model, it should be understood that the terms "center", "lateral", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0101] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0102] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0103] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0104] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0105] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An internal locking mechanism (100) for a telescopic rod (1000), characterized in that, The inner locking mechanism (100) includes: Connector (10); Tensioner (30), wherein the tensioner (30) is threadedly connected to the connecting seat (10); A locking element (20) is connected to the connecting seat (10) and is disposed around the tensioning element (30). The tensioning member (30) is movably engaged with the tensioning member (30) along the axis of the connecting seat (10), and can drive the locking member (20) to elastically deform and expand outward.

2. The internal locking mechanism (100) according to claim 1, characterized in that, The locking member (20) is provided with a guide groove (201) extending along the axis, and the tensioning member (30) is provided with a slider (31), which is slidably disposed in the guide groove (201) along the axis.

3. The internal locking mechanism (100) according to claim 2, characterized in that, The locking member (20) is provided with at least one ductile opening (202) extending along the axis, the ductile opening (202) being disposed around the guide groove (201).

4. The internal locking mechanism (100) according to claim 3, characterized in that, The locking member (20) is provided with at least two spaced-apart guide grooves (201), and the tensioning member (30) is provided with at least two spaced-apart sliders (31); and / or The locking member (20) has at least two of the said variable openings (202), the variable openings (202) and the guide groove (201) being arranged circumferentially spaced from each other along the locking member (20); and / or The variable opening (202) is provided in multiple circumferential intervals along the locking member (20).

5. The internal locking mechanism (100) according to claim 1, characterized in that, The outer periphery of the connecting seat (10) is provided with a first thread, the tensioning member (30) is provided with a through groove (301), the through groove (301) is provided with a second thread, the connecting seat (10) passes through the through groove (301), and the second thread cooperates with the first thread to convert the rotational movement of the connecting seat (10) into the movement of the tensioning member (30) along the axis of the connecting seat (10).

6. The internal locking mechanism (100) according to claim 1, characterized in that, On the axis, the tensioning member (30) is configured as a tapered shape that gradually expands outward in a direction away from the locking member (20); and / or the locking member (20) is configured as a tapered shape that gradually expands outward in a direction away from the locking member (20); and / or the outer periphery of the locking member (20) is provided with a plurality of protrusions (21) arranged circumferentially spaced along the locking member (20), the plurality of protrusions (21) extending along the axis of the locking member (20).

7. The internal locking mechanism (100) according to any one of claims 1-6, characterized in that, The connecting seat (10) includes a connecting section (11) and a driving section (12). The connecting section (11) is connected to the driving section (12). The diameter of the driving section (12) is smaller than that of the connecting section (11). A limiting surface (110) supporting the tensioner (30) along the axis is formed between the driving section (12) and the connecting section (11).

8. The internal locking mechanism (100) according to any one of claims 1-6, characterized in that, The connecting seat (10) includes a driving section (12) and a fixed section (13), the fixed section (13) being connected to the driving section (12). The inner locking mechanism (100) further includes a limiting member (40), the limiting member (40) being disposed on the fixed section (13), and the limiting member (40) restricting the locking member (20) and / or the tensioning member (30) along the axis of the connecting seat (10).

9. The internal locking mechanism (100) according to claim 8, characterized in that, The fixed section (13) has a third thread on its outer periphery, and the limiting member (40) is a nut that mates with the third thread; and / or The diameter of the fixed segment (13) is smaller than that of the driving segment (12), and the driving segment (12) and the fixed segment (13) form an abutment surface (120) that limits the positioning member (40) along the axis.

10. A telescopic rod (1000), characterized in that, include: A first rod (200) and a second rod (300), wherein at least a portion of the first rod (200) is telescopically disposed within the second rod (300); The inner locking mechanism (100) according to any one of claims 1-9 is connected to the first rod (200) and located inside the second rod (300), wherein the locking member (20) can be driven to expand outward by the tensioning member (30) to lock the first rod (200) and the second rod (300).

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