Telescopic supporting leg and multifunctional supporting device

Abstract

The utility model discloses a telescopic supporting leg and a multifunctional supporting device. The telescopic supporting foot comprises an outer rod, an inner rod, a friction assembly and an adjusting piece. The inner rod is telescopically arranged in the outer rod; the friction assembly is arranged at the end, inserted into the outer rod, of the inner rod and abuts against the inner wall of the outer rod so as to be used for reducing the shaking amplitude when the inner rod stretches out and draws back. The adjusting part is connected with the friction assembly and used for adjusting the contact area between the friction assembly and the inner wall of the outer rod. According to the utility model, the supporting leg structure of the tripod is improved, the telescopic shaking is obviously reduced, and the supporting stability of the tripod is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting devices, in particular to a telescopic supporting leg and a multifunctional supporting device. Background Art

[0002] The legs of an existing tripod usually include an outer rod and an inner rod, one end of the inner rod is slidably inserted into the outer rod to telescopically adjust the overall length of the legs, thereby meeting support requirements in different application scenarios.

[0003] However, the inner rod and the outer rod of the existing support leg adopt a sliding friction structure, and the contact area is fixed. If the size of the contact area is not set reasonably or it is worn after long-term use, one end of the inner rod will shake due to insufficient friction, thereby reducing the support stability of the tripod. Utility Model Content

[0004] The main purpose of the utility model is to provide a telescopic support leg and a multifunctional supporting device, aiming to reduce the shaking of the inner rod and improve the supporting stability of the tripod.

[0005] In order to achieve the above object, the utility model provides a telescopic support leg, comprising:

[0006] outside rod;

[0007] An inner rod, telescopically arranged inside the outer rod;

[0008] a friction assembly, provided on one end of the inner rod inserted into the outer rod and abutting against the inner wall of the outer rod, so as to reduce the shaking amplitude of the inner rod when it is extended or retracted; and

[0009] An adjusting member is connected to the friction assembly to adjust a contact area between the friction assembly and the inner wall of the outer rod.

[0010] Optionally, the friction assembly comprises a friction seat and a plurality of balls, wherein the friction seat is disposed on the end of the inner rod and is provided with a plurality of receiving holes, and the plurality of balls are received in the plurality of receiving holes one by one and abut against the inner wall of the outer rod; or

[0011] The friction assembly comprises an extrusion block, which is arranged on the end of the inner rod and is provided with a plurality of sliding protrusions with different heights. The inner wall of the outer rod is provided with a sliding groove which is slidably matched with the sliding protrusions.

[0012] Optionally, a friction block is fixed on one end of the inner rod inserted into the outer rod and is in sliding contact with the inner wall of the outer rod. The friction block is provided with a groove, and the bottom of the groove is provided with an inclined surface. The friction seat is arranged in the groove, and an adjusting inclined block is provided between the friction seat and the inclined surface of the friction block. A contact surface that fits the inclined surface is provided at a position of the adjusting inclined block that contacts the inclined surface. The adjusting member connects the friction seat and the friction block and is used to adjust the relative position of the inclined surface and the abutment surface to adjust the contact area between the ball and the inner wall of the outer rod.

[0013] Optionally, a friction block is fixed on one end of the inner rod inserted into the outer rod and is in sliding contact with the inner wall of the outer rod. The friction block is provided with a groove, and the bottom of the groove is provided with an inclined surface. The friction seat is arranged in the groove; a mating surface that matches the inclined surface is provided at a position on the friction seat that contacts the inclined surface, and the adjusting member connects the friction seat and the friction block and is used to adjust the relative position of the inclined surface and the mating surface to adjust the contact area between the ball and the inner wall of the outer rod.

[0014] Optionally, the friction block has two opposite friction surfaces, both of which are provided with the grooves, and the friction seat includes a connecting arm connected to the friction block through the adjusting member and two mounting arms respectively connected to the two sides of the connecting arm, and the two mounting arms are respectively arranged in the two grooves and are both provided with the accommodating holes.

[0015] Optionally, the adjusting member is an adjusting bolt or an adjusting screw.

[0016] Optionally, the telescopic support leg further comprises a caster, and the caster is arranged on the outer end of the inner rod.

[0017] Optionally, a wheel sleeve is provided on the outer peripheral sleeve of the caster, and the wheel sleeve is rotatably set on the inner rod and can be rotatably switched between a first position and a second position; when in the first position, the wheel sleeve covers the caster so that the wheel sleeve can be used as a foot pad; when in the second position, the caster is exposed outside the wheel sleeve so that the caster can work normally.

[0018] To achieve the above object, the utility model further proposes a multifunctional support device, comprising a main rod body and at least three telescopic legs arranged at the bottom of the main rod body, wherein the telescopic legs include:

[0019] outside rod;

[0020] An inner rod, telescopically arranged inside the outer rod;

[0021] a friction assembly, provided on one end of the inner rod inserted into the outer rod and abutting against the inner wall of the outer rod, so as to reduce the shaking amplitude of the inner rod when it is extended or retracted; and

[0022] an adjusting member connected to the friction assembly to adjust the friction force between the friction assembly and the inner wall of the outer rod;

[0023] At least three of the telescopic legs are switchably arranged on the main rod body between an extended position and a stored position; in the extended position, the other ends of at least three of the telescopic legs are far away from each other; in the stored position, at least three of the telescopic legs are close to each other.

[0024] Optionally, the multifunctional supporting device further comprises a supporting platform for connecting an object to be supported, and the supporting platform is arranged on the main rod body.

[0025] In the technical solution of the utility model, the telescopic support leg includes an outer rod, an inner rod, a friction assembly and an adjusting member; the inner rod is telescopically arranged inside the outer rod; the friction assembly is arranged on one end of the inner rod inserted into the outer rod and abuts against the inner wall of the outer rod, so as to reduce the shaking amplitude when the inner rod is telescoped; the adjusting member is connected to the friction assembly, so as to adjust the contact area between the friction assembly and the inner wall of the outer rod. It can be understood that the utility model helps to make the relative sliding friction resistance between the inner rod and the outer rod at an appropriate size by setting the friction assembly, which can reduce the shaking amplitude when the inner rod is telescoped, and the friction resistance can be adjusted by the adjusting member during early assembly or later maintenance, or the user can also adjust the friction resistance by himself, so as to improve the support stability of the tripod while meeting the needs of different users for the telescopic feel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 This is a structural schematic diagram of an embodiment of the telescopic support leg of the utility model;

[0028] Figure 2 It is a cross-sectional view of an embodiment of the telescopic support leg of the utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the inner rod in one embodiment of the telescopic support leg of the utility model;

[0030] Figure 4 This is an exploded view of the inner rod in one embodiment of the telescopic support leg of the utility model;

[0031] Figure 5It is a cross-sectional view of the outer end of the inner rod in one embodiment of the telescopic support leg of the utility model;

[0032] Figure 6 The operation diagram of the wheel sleeve in one embodiment of the telescopic support leg of the utility model is shown in FIG. Figure 1 ;

[0033] Figure 7 The operation diagram of the wheel sleeve in one embodiment of the telescopic support leg of the utility model is shown in FIG. Figure 2 ;

[0034] Figure 8 It is a structural schematic diagram of an embodiment of the multifunctional supporting device of the utility model (the telescopic legs are in the unfolded state).

[0035] Description of Figure Numbers:

[0036] 10. Outer rod; 20. Inner rod; 30. Friction assembly; 40. Adjustment member; 31. Friction seat; 32. Ball; 31a. Accommodation hole; 21. Friction block; 21a. Groove; 41. Adjustment bevel block; 50. Caster; 60. Wheel sleeve; 100. Telescopic support leg; 200. Support leg seat; 300. Main rod body; 400. Support platform.

[0037] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0042] The utility model provides a telescopic support leg which can be used as a support leg of a support device such as a tripod, but is not limited here.

[0043] Reference Figures 1 to 4 In one embodiment of the utility model, the telescopic support leg 100 includes an outer rod 10, an inner rod 20, a friction assembly 30 and an adjusting member 40; the inner rod 20 is telescopically arranged in the outer rod 10; the friction assembly 30 is arranged on one end of the inner rod 20 inserted into the outer rod 10 and abuts against the inner wall of the outer rod 10 to reduce the shaking amplitude of the inner rod 20 when it is telescoped; the adjusting member 40 is connected to the friction assembly 30 to adjust the contact area between the friction assembly 30 and the inner wall of the outer rod 10.

[0044] In this embodiment, the outer rod 10 and the inner rod 20 can be in the shape of a round tube, a square tube, etc., which is not limited here.

[0045] The friction assembly 30 is a structure such as a friction block or sleeve whose position can be adjusted by the adjusting member 40. That is, the contact area and the extrusion force between the friction assembly 30 and the inner wall of the outer rod 10 are changed by changing the position, thereby adjusting the friction force between the friction assembly 30 and the inner wall of the outer rod 10. The specific structure of the friction assembly 30 and the adjusting member 40 is not limited here.

[0046] It can be understood that the utility model, by providing the friction assembly 30, helps to make the relative sliding friction resistance between the inner rod 20 and the outer rod 10 at an appropriate size, which can reduce the shaking amplitude of the inner rod 20 when it is extended and retracted, and the friction resistance can be adjusted by the adjustment member 40 during early assembly or later maintenance. In some application scenarios, the user can also adjust the friction resistance by himself, so as to improve the supporting stability of the tripod while meeting the requirements of different users for the telescopic feel.

[0047] Main reference Figures 2 to 4 In one embodiment, the friction assembly 30 may include a friction seat 31 and a plurality of balls 32. The friction seat 31 is disposed on the end of the inner rod 20 and is provided with a plurality of accommodating holes 31a. The plurality of balls 32 are accommodated in the plurality of accommodating holes 31a one by one and abut against the inner wall of the outer rod 10. In this way, the smoothness of the inner rod 20 during extension and retraction can be improved, and the inner rod 20 can be kept to slide stably, extend and retract without shaking, and the support is more reliable.

[0048] Of course, in some other embodiments, the friction assembly 30 may also include an extrusion block, which is disposed on the end of the inner rod 20 and is provided with a plurality of sliding protrusions of different heights, and the inner wall of the outer rod 10 is provided with a slide groove that is slidably adapted to the sliding protrusions. In this embodiment, the adjustment member 40 can change the number of contacts between the sliding protrusions and the inner rod 20 by pushing the friction assembly 30 to move along the length direction of the inner rod 20, thereby adjusting the contact area between the two. Preferably, the sliding protrusion can be set as a spherical convex point with a certain elasticity, which is not limited here.

[0049] In order to achieve the movement of the friction assembly 30 in the direction close to or away from the inner wall of the outer rod 10 to adjust the contact area between the ball 32 and the inner wall of the outer rod 10, further, referring to Figures 2 to 4 A friction block 21 that is in sliding contact with the inner wall of the outer rod 10 can be fixed on one end of the inner rod 20 inserted into the outer rod 10. The friction block 21 is provided with a groove 21a, and the bottom of the groove 21a is provided with an inclined surface. The friction seat 31 is arranged in the groove 21a; a matching surface that matches the inclined surface is provided at the position of the friction seat 31 that contacts the inclined surface, or an adjusting inclined block 41 is provided between the friction seat 31 and the inclined surface of the friction block 21, and a contact surface that matches the inclined surface is provided at the position of the adjusting inclined block 41 that contacts the inclined surface; the adjusting member 40 connects the friction seat 31 and the friction block 21 and is used to adjust the relative position of the inclined surface and the matching surface or the contact surface to adjust the contact area between the ball 32 and the inner wall of the outer rod 10.

[0050] In this embodiment, the friction block 21 has two opposite friction surfaces, both of which are provided with grooves 21a. The friction seat 31 includes a connecting arm connected to the friction block 21 through an adjusting member 40 and two mounting arms respectively connected to the two sides of the connecting arm. The two mounting arms are respectively arranged in the two grooves 21a and are both provided with accommodating holes 31a.

[0051] The adjusting member 40 may be a manual adjusting member such as an adjusting bolt or an adjusting screw. Of course, an automatic adjusting mechanism may also be used to drive the friction seat 31 to move through a driving member such as a motor, which is not limited here.

[0052] To improve the flexibility of tripods and other supporting devices and facilitate moving positions, refer to Figures 4 to 7 In one embodiment, the telescopic support leg 100 may further include a caster 50, which is disposed on the outer end of the inner rod 20, and the caster 50 may be a universal wheel.

[0053] In this embodiment, the outer periphery of the caster 50 is provided with a wheel sleeve 60, and the wheel sleeve 60 is rotatably disposed on the inner rod 20 and can be rotatably switched between a first position and a second position; Figure 7 As shown, in the first position, the wheel cover 60 covers the caster 50 so that the wheel cover 60 can be used as a foot pad; Figure 6 As shown, in the second position, the caster 50 is exposed outside the wheel sleeve 60 to enable the caster 50 to work normally. Such an arrangement ensures the stability of the object supported by the supporting device while also achieving the function of the supporting device being able to move quickly.

[0054] When in use, when it is necessary to move the supporting device with the telescopic support leg 100, the caster 50 can be exposed by rotating the wheel cover 60; when it is necessary to put the supporting device in a stable supporting state, the caster 50 can be covered by the wheel cover 60 by rotating the wheel cover 60 in the opposite direction. At this time, the bottom end of the wheel cover 60 serves as a foot pad to maintain the stability of the entire supporting device and the object thereon.

[0055] Reference Figure 8 The utility model also proposes a multifunctional supporting device, which includes a telescopic support leg 100. The specific structure of the telescopic support leg 100 refers to the above embodiment. Since the multifunctional supporting device proposed by the utility model includes all schemes of all embodiments of the telescopic support leg 100, it has at least the same technical effect as the telescopic support leg 100, which will not be elaborated here one by one.

[0056] In one embodiment, if Figure 8 As shown, the multifunctional support device may further include a support foot seat 200 and a main rod body 300, one end of at least three telescopic support feet 100 is arranged at the bottom of the main rod body 300 through the support foot seat 200, and can be rotated and switched between an extended position and a stored position; in the extended position, the other ends of at least three telescopic support feet 100 are away from each other; in the stored position, at least three telescopic support feet 100 are close to each other. This arrangement can facilitate storage and arrangement, and is also more convenient to carry.

[0057] In addition, in one embodiment, the multifunctional supporting device may also include a supporting platform 400 arranged on the main rod body 300, and the supporting platform 400 is used to connect a mobile phone or a camera to wait for a supported object. The end of the main rod body 300 away from the supporting platform 400 is fixed on the support base 200, and the main rod body 300 can adopt a length-adjustable pull rod assembly, which is not limited here.

[0058] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A telescopic support leg, characterized in that: include: outside rod; An inner rod, telescopically arranged inside the outer rod; A friction assembly is provided on one end of the inner rod inserted into the outer rod and abuts against the inner wall of the outer rod to reduce the shaking amplitude of the inner rod when it is extended or retracted; as well as An adjusting member is connected to the friction assembly to adjust a contact area between the friction assembly and the inner wall of the outer rod.

2. The telescopic foot according to claim 1, characterized in that: The friction assembly comprises a friction seat and a plurality of balls, wherein the friction seat is arranged on the end of the inner rod and is provided with a plurality of accommodating holes, and the plurality of balls are accommodated in the plurality of accommodating holes one by one and abut against the inner wall of the outer rod; or The friction assembly comprises an extrusion block, which is arranged on the end of the inner rod and is provided with a plurality of sliding protrusions with different heights. The inner wall of the outer rod is provided with a sliding groove which is slidably matched with the sliding protrusions.

3. The telescopic foot according to claim 2, characterized in that: A friction block is fixed on one end of the inner rod inserted into the outer rod and is in sliding contact with the inner wall of the outer rod. A groove is concavely provided on the friction block, and a slope is provided at the bottom of the groove. The friction seat is arranged in the groove, and an adjusting slope is provided between the friction seat and the slope of the friction block. A contact surface that matches the slope is provided at a position of the adjusting slope that contacts the slope. The adjusting member connects the friction seat and the friction block and is used to adjust the relative position of the slope and the contact surface to adjust the contact area between the ball and the inner wall of the outer rod.

4. The telescopic support leg according to claim 2, characterized in that: A friction block is fixed on one end of the inner rod inserted into the outer rod and is in sliding contact with the inner wall of the outer rod. A groove is concavely provided on the friction block, and a slope is provided at the bottom of the groove. The friction seat is arranged in the groove, and a mating surface that matches the slope is provided at a position of the friction seat in contact with the slope. The adjusting member connects the friction seat and the friction block and is used to adjust the relative position of the slope and the mating surface to adjust the contact area between the ball and the inner wall of the outer rod.

5. The telescopic foot according to claim 3, characterized in that: The friction block has two opposite friction surfaces, and the grooves are provided on the two friction surfaces. The friction seat includes a connecting arm connected to the friction block through the adjusting member and two mounting arms respectively connected to the two sides of the connecting arm. The two mounting arms are respectively arranged in the two grooves and are both provided with the accommodating holes.

6. The telescopic support leg according to claim 2, characterized in that: The adjusting member is an adjusting bolt or an adjusting screw.

7. The telescopic foot according to claim 1, characterized in that: The telescopic support leg also includes a caster, and the caster is arranged on the outer end of the inner rod.

8. The telescopic foot according to claim 7, characterized in that: The outer peripheral sleeve of the caster is provided with a wheel sleeve, which is rotatably set on the inner rod and can be rotatably switched between a first position and a second position; when in the first position, the wheel sleeve covers the caster so that the wheel sleeve can be used as a foot pad; when in the second position, the caster is exposed outside the wheel sleeve so that the caster can work normally.

9. A multifunctional supporting device, characterized in that: It comprises a main rod body and at least three telescopic legs according to any one of claims 1 to 8, which are arranged at the bottom of the main rod body, wherein the at least three telescopic legs are switchably arranged on the main rod body between an extended position and a retracted position; in the extended position, the other ends of the at least three telescopic legs are far away from each other; in the retracted position, the at least three telescopic legs are close to each other.

10. The multifunctional supporting device according to claim 9, characterized in that: The multifunctional supporting device also includes a supporting platform for connecting the object to be supported, and the supporting platform is arranged on the main rod body.

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