Power line built-in wiring structure and lifting stand column

Abstract

The invention discloses a power line built-in wiring structure and a lifting stand column, and the structure comprises a cable which comprises at least one spiral segment. The at least one cable storage assembly is provided with at least one cable storage bin used for storing cables, the spiral section is stored in the cable storage bin and telescopically moves along the cable storage bin, and self-adaptive arrangement of the cables in the dynamic telescopic process is achieved. According to the invention, sectional layout and modular storage of cables can be realized, the problem of stress concentration caused by rigid guidance in a traditional scheme is solved, the mechanical damage risk of exposed cables can be eliminated through full built-in wiring, the appearance integrity of equipment is maintained, a greater degree of freedom is provided for the design of a lifting table / chair, and the design of the lifting table / chair is facilitated. And meanwhile, the cable is allowed to be quickly replaced through the modular design.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric lifting, in particular to a power line built-in wiring structure and a lifting column. BACKGROUND

[0002] In the field of linear driving devices applied in electric lifting tables, electric lifting chairs and the like, electric lifting columns have become a common technical solution as core driving components. In the prior art of this field, the power line layout of the lifting column mainly exists in the following three representative structures:

[0003] 1. Power line exposed layout: This is the most common implementation scheme at present. The power supply line of the electric lifting column is completely exposed outside the device. Its fixing method is limited to using a wire slot arranged along the outer wall of the device or a simple cable tie for binding and restraint.

[0004] 2. Power line built-in layout (without guide): The power line is placed in the hollow cavity of the electric lifting column. The existing such scheme is usually limited to directly placing (or simply restraining) a flexible spring power line in the internal space of the column, and in some products, a plastic isolation cover is placed around the flexible spring power line.

[0005] 3. Power line built-in layout (with guide): This scheme is similar to scheme 2, the main difference being that a cylindrical guide column is added in the center of the flexible spring power line. The function of this guide column is to provide linear guidance and restraint for the spring power line during its contraction or expansion.

[0006] The above three representative structures have the following defects:

[0007] 1. Power line exposed layout: This scheme has obvious shortcomings: first, the exposed cables on the surface of the device destroy the visual aesthetics of the overall design; second, these exposed cables are extremely vulnerable to accidental pulling, kicking, wear and tear, or being scratched by sharp objects during daily use. Such damage can cause damage to the cable insulation layer, which may lead to short circuits, electrical leakage, and even electric shock safety hazards.

[0008] 2. Power line built-in layout (without guide): This scheme does not fully solve the problems of long-term and repeated mechanical friction, bending stress concentration, and local overheating of the cable under dynamic stretching and contraction conditions, and there is a risk of accelerated aging and damage to the cable sheath and insulation layer, which may affect the service life and electrical safety. The plastic isolation cover does not fundamentally solve the above problems.

[0009] 3. Power line built-in routing (with guide): This scheme intends to improve the cable stretchability and guideability, but introduces inevitable rigid friction pairs. Its essence is to constrain the path by physical means, sacrificing the compliance and freedom of the wire movement, causing the key reliability risk to shift from the cable outer wall to the guide column system and its contact points with the wire. Compared with scheme 2, it may accelerate the physical damage of the wire and bring additional failure modes (guide column failure / jamming), and fails to fundamentally solve the wear, stress and life problems of dynamic cables. SUMMARY

[0010] The present application aims to provide a power line built-in routing structure and a lifting column to solve the problems existing in the prior art. The power line built-in routing structure can not only realize segmented layout and modular storage of the cable, solve the stress concentration problem caused by rigid guide in the traditional scheme, but also eliminate the mechanical damage risk of exposed cables through fully built-in wiring, maintain the integrity of the appearance of the equipment, provide greater freedom for the design of the lifting table / chair, and allow quick replacement of the cable through modular design.

[0011] To solve the above technical problems, the present application adopts the following technical scheme:

[0012] The power line built-in routing structure is characterized by comprising

[0013] The cable comprises at least one spiral segment.

[0014] The cable storage assembly is provided with at least one cable storage bin for storing the cable, and the spiral segment is stored in the cable storage bin and moves in and out along the cable storage bin to realize adaptive arrangement of the cable during dynamic stretching and contraction. Through the design of the above structure, the cable can be segmented and laid out and modularly stored, the stress concentration problem caused by rigid guide in the traditional scheme can be solved, the mechanical damage risk of exposed cables can be eliminated through fully built-in wiring, the integrity of the appearance of the equipment can be maintained, greater freedom can be provided for the design of the lifting table / chair, and the cable can be quickly replaced through modular design.

[0015] Further, the cable storage bin is provided with a flared mouth at one end close to the stretching and contraction direction of the cable for guiding the storage of the cable. Through the design of the flared mouth, not only the storage guide can be provided, but also the problem of wire and metal friction can be avoided.

[0016] Further, at least one end of the cable storage bin is provided with a limiting gap, and the first straight segment connected with the spiral segment penetrates through the limiting gap to inhibit the longitudinal or transverse movement of the cable. Through the design of the limiting gap, the bending fatigue caused by non-axial force can be eliminated.

[0017] Further, the tail end fixing member is further included, the cable storage assembly is provided with a through hole, and the locking pin is connected to the tail end fixing member by penetrating the through hole, so that the cable storage assembly and the tail end fixing member are fixedly connected, and the stability and reliability of the overall installation of the storage assembly are improved.

[0018] Further, the cable storage assembly includes a first cable storage assembly and a second cable storage assembly, and the first cable storage assembly is detachably connected to the second storage assembly, so that the installation requirements of the lifting column with different lengths and sizes can be met.

[0019] Further, the first cable storage assembly is provided with a first matching block with a matching hole, the second cable assembly is provided with a second matching block, the second matching block is inserted into the matching hole of the first matching block, the detachable connection of the first cable storage assembly and the second storage assembly is realized, and the assembly between the first cable storage assembly and the second cable storage assembly is facilitated.

[0020] A lifting column includes an outer pipe and at least one telescopic pipe, and the telescopic pipe is embedded in the outer pipe, characterized in that the power line built-in wiring structure is further included, and the power line built-in wiring structure is detachably connected to the telescopic pipe or the outer pipe, so that the installation stability between the built-in wiring structure and the lifting column is improved.

[0021] Further, the motor installation box connected to the end of the telescopic pipe or the outer pipe and the screw rod assembly shell detachably connected to the power line built-in wiring structure are further included, the driving motor is arranged in the motor installation box, and the driving motor is connected to the screw rod assembly shell through the screw rod.

[0022] Further, the outer pipe or the telescopic pipe is provided with a fixing plate, the cable further includes a second straight section connected to the spiral section, the second straight section is connected to the motor installation box and the fixing plate through the first locking member and the second locking member respectively, and the physical and electrical double protection can be formed through the double-end locking mechanism and the coupler with overload protection.

[0023] Further, the cable further includes a connecting end connected to the second straight section, and the connecting end is connected to the coupler and the power socket arranged in the motor installation box respectively.

[0024] The application has the following beneficial effects due to the adoption of the above technical scheme:

[0025] 1. The application can not only realize the segmented layout and modular storage of the cable, solve the stress concentration problem caused by the rigid guide in the traditional scheme, but also prevent the mechanical damage risk of the exposed cable through the full built-in wiring, maintain the integrity of the appearance of the equipment, provide greater freedom for the design of the lifting table / chair, and allow the cable to be quickly replaced through the modular design.

[0026] 2. Through the design of the trumpet mouth, the storage guide can be provided, and the problem of the friction between the wire and the metal can be avoided.

[0027] 3、The present application is used for inhibiting the longitudinal or transverse movement of the cable, and the bending fatigue caused by the non-axial force can be eliminated. BRIEF DESCRIPTION OF DRAWINGS

[0028] The present application will be further described below in combination with the drawings:

[0029] Figure 1 The effect diagram of the power line built-in wiring structure and the power line built-in wiring structure in the lifting column of the present application;

[0030] Figure 2 The effect diagram of the power line built-in wiring structure following the expansion of the lifting column in the present application;

[0031] Figure 3 The connection schematic diagram between the power line built-in wiring structure and the motor mounting box after the contraction of the present application;

[0032] Figure 4 The partial enlarged view of the I place in the present application; Figure 3

[0033] The partial enlarged view of the II place in the present application; Figure 5 Figure 3 The partial enlarged view of the III place in the present application;

[0034] Figure 6 The structure schematic diagram of the cable in the present application; Figure 3

[0035] The structure schematic diagram of the lifting column after the contraction in the present application. Figure 7 In the drawings: 1-motor mounting box; 10-outer tube; 11-middle tube; 12-inner tube;

[0036] Figure 8 100-cable; 101-spiral section; 102-first straight section; 103-second straight section; 104-connection end;

[0037] 20-power socket; 21-coupler; 2-driving motor; 23-screw rod;

[0038] 200-cable storage assembly; 210-first cable storage assembly; 211-first matching block; 212-first cable storage bin; 213-first limiting gap; 220-second cable storage assembly; 221-second matching block; 222-second cable storage bin; 223-second limiting gap; 224-via hole; 230-flared mouth;

[0039] 20-power socket; 21-coupler; 2-driving motor; 23-screw rod;

[0040] 200-cable storage assembly; 210-first cable storage assembly; 211-first matching block; 212-first cable storage bin; 213-first limiting gap; 220-second cable storage assembly; 221-second matching block; 222-second cable storage bin; 223-second limiting gap; 224-via hole; 230-flared mouth;

[0041] ​3 - first locking element; 4 - second locking element; 5 - housing of screw rod assembly; 6 - tail end fixing element; 7 - locking pin; 8 - fixing plate. DETAILED DESCRIPTION

[0042] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0043] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0044] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0045] As shown in Figure 1 The power line built-in wiring structure of the present application includes a cable 100 and at least one cable storage assembly 200.

[0046] The cable storage assembly 200 can adopt an integrated structure or a multi-segment combined structure. The present application takes an example of the cable storage assembly 200 including a first cable storage assembly 210 and a second cable storage assembly 220 for description.

[0047] The first cable storage assembly 210 is detachably connected to the second storage assembly, which can meet the installation requirements of lifting columns of different lengths and sizes.

[0048] The first cable storage assembly 210 is provided with a first matching block 211 with a matching hole, and the second cable 100 assembly is provided with a second matching block 221, which is inserted into the matching hole of the first matching block 211, so as to realize the detachable connection of the first cable storage assembly 210 and the second storage assembly, and facilitate the assembly between the first cable storage assembly 210 and the second cable storage assembly 220.

[0049] Meanwhile, the first matching block 211 and the second matching block 221 are both provided with threaded holes, and a screw is passed through the threaded holes, which can improve the connection strength and stability between the first cable storage assembly 210 and the second cable storage assembly 220.

[0050] The cable 100 includes at least one spiral segment 101. This application takes two spiral segments 101 as an example for description.

[0051] The cable storage assembly 200 is provided with at least one cable storage compartment for storing cables 100. This application uses the example of one cable storage assembly 200 corresponding to one cable storage compartment. The first cable storage assembly 210 is provided with a first cable storage compartment 212, and the second cable storage assembly 220 is provided with a second cable storage compartment 222. When the first and second cable storage assemblies 210 and 220 are spliced, the first and second cable storage compartments 212 and 222 are located on opposite sides.

[0052] The spiral section 101 is stored in the cable storage compartment and moves telescopically along the cable storage compartment, thereby realizing adaptive arrangement of the cable 100 during dynamic telescopic movement.

[0053] A bell mouth 230 is provided at one end of the cable storage bin close to the direction of telescopic movement of the cable 100, which is used to guide the cable 100 for storage. The design of the bell mouth 230 can not only provide storage guidance, but also avoid the problem of friction between the wire and the metal.

[0054] At least one end of the cable storage bin is provided with a limiting notch, and the first straight section 102 connected to the spiral section 101 passes through the limiting notch to suppress the longitudinal or lateral movement of the cable 100. The design of the limiting notch can eliminate bending fatigue caused by non-axial forces. The limiting notch and the bell mouth 230 in this application are located at both ends of the cable storage bin. The bottom of the first cable storage bin 212 of the first cable storage assembly 210 is provided with a first limiting notch 213, and the top of the second cable storage bin 222 of the second cable storage assembly 220 is provided with a second limiting notch 223. The first limiting notch 213 and the second limiting notch 223 are close to each other.

[0055] The built-in routing structure of the power cord also includes a tail end fixing part 6. The second cable storage component 220 is provided with a through hole 224. The locking pin 7 passes through the through hole 224 and is connected to the tail end fixing part 6, thereby realizing a fixed connection between the cable storage component 200 and the tail end fixing part 6, thereby improving the stability and reliability of the overall installation of the storage component.

[0056] Through the design of the above structure, not only can the segmented layout and modular storage of the cables 100 be achieved, solving the stress concentration problem caused by rigid guidance in traditional solutions, but also the risk of mechanical damage to the exposed cables 100 can be eliminated through fully built-in wiring, maintaining the integrity of the equipment appearance, providing greater freedom in the design of lifting tables / chairs, and allowing for quick replacement of cables 100 through modular design.

[0057] like Figures 2 to 8As shown, the lifting column of the present application comprises an outer tube 10 and at least one telescopic tube, the telescopic tube is embedded in the outer tube 10, and further comprises a power cable built-in wiring structure as described above, which is detachably connected to the telescopic tube or the outer tube 10, thereby improving the installation stability between the built-in wiring structure and the lifting column.

[0058] The telescopic tube of the present application can be a single inner tube 12 or a plurality of telescopic spliced inner tubes 12; the outer tube 10 can be fixedly connected to the base, the telescopic tube is connected to the tabletop or the seat cushion of the chair, or the top end of the outer tube 10 is fixed to the tabletop or the seat cushion of the chair, and the telescopic tube is connected to the base, which can be selected according to actual use requirements. The lifting column of the present application is described by taking one outer tube 10, one middle tube 11 and one inner tube 12 as an example. The inner tube 12 is nested on the inner side of the outer tube 10 through the middle tube 11.

[0059] The lifting column further comprises a motor mounting box 1 connected to the end of the telescopic tube or the outer tube 10, and a lead screw assembly shell 5 detachably connected to the power cable built-in wiring structure, the motor mounting box 1 is provided with a driving motor 2, the driving motor 2 is connected to the lead screw assembly shell 5 through a lead screw 23, the driving motor 2 drives the lead screw 23 to rotate, thereby driving the lead screw assembly shell and the built-in wiring structure to move up and down synchronously.

[0060] The outer tube 10 or the telescopic tube is provided with a fixed plate 8, the cable 100 further comprises a second straight section 103 connected to the spiral section 101, the second straight section 103 is connected to the motor mounting box 1 and the fixed plate 8 through the first locking member 3 and the second locking member 4 respectively, and through the double-end locking mechanism cooperating with the coupler 21 with overload protection, a physical-electrical double protection can be formed.

[0061] The cable 100 further comprises a connecting end 104 connected to the second straight section 103, the connecting end 104 is connected to the coupler 21 and the power socket 20 provided in the motor mounting box 1 respectively.

[0062] When the lifting column adopts a three-section type, if the cable storage assembly 200 adopts a multi-section combined structure, the above scheme can be realized. If the cable storage assembly 200 adopts an integral structure, and the wiring structure is installed in the middle tube, the first matching block 211, the second matching block 221 and the threaded hole are not needed, the first cable storage bin and the second cable storage bin are installed on both sides of the cable storage assembly respectively, and the length of the first cable storage bin and the second cable storage bin is less than the length of the cable storage assembly.

[0063] When the lifting column is two-section, if the cable storage assembly 200 adopts a multi-section combined structure, the above scheme can be realized. If the cable storage assembly 200 adopts an integrated structure, and the wiring structure is installed at the bottom of the outer tube, the first matching block 211, the second matching block 221 and the threaded hole are not needed, and one cable storage bin is arranged on one side of the cable storage assembly. At the same time, the outer tube can be connected to the base or the desktop, and the inner tube is connected to the desktop or the base, so that the single-side telescopic function is realized.

[0064] In actual installation, the present application takes the lifting table as an example,

[0065] 1. A lifting column is installed at the bottom of the lifting table, and the lifting column is composed of an outer tube 10, a middle tube 11 and an inner tube 12, and further comprises a motor mounting box 1 pre-installed above the lifting column;

[0066] 2. First, a cable storage assembly 200 is installed in the lifting column, the cable storage assembly 200 is assembled by a first cable storage assembly 210 and a second cable storage assembly 220, the first matching block 211 is placed above the second matching block 221, and the connection is completed after pressing, the connection mode is mutual embedding, and the connection can be reinforced by screws;

[0067] 3. The cable storage assembly 200 is fixed on the screw rod assembly shell 5 by the locking pin 7 passing through the through hole 224 and the tail end fixing part 6, and the tail end fixing part 6 is installed at the bottom of the middle tube 11;

[0068] 4. The cable 100 is arranged in the cable storage assembly 200, the cable 100 has two spiral sections 101, three straight sections and two connection ends 104, the spiral sections 101 are respectively stored in the first cable storage bin 212 and the second cable storage bin 222, and the first straight section 102 is just capable of being properly placed in the first limiting gap 213 and the second limiting gap 223;

[0069] 5. The second straight section 103 of the first end is locked on the motor bottom box by the first locking part 3 after passing through the motor mounting box 1, and then the connection end 104 is connected with the power socket 20;

[0070] 5. The second straight section 103 of the tail end is fixed on the fixing plate 8 at the bottom of the outer tube 10 by the second locking part 4, and then the connection end 104 of the tail end is connected with the coupler 21;

[0071] 6. Since the second straight section 103 is fixed by the first locking part 3 and the second locking part 4, when the lifting column is lifted, the spiral section 101 will synchronously appear the extension action. The first straight end is placed in the first limiting gap 213 and the second limiting gap 223, and the two limiting gaps which are symmetrical left and right make the cable 100 be restrained and cannot appear the problem of large displacement;

[0072] 7. When the lifting column retracts, the spiral section 101 will retract synchronously due to its own elastic force. Due to the presence of the bell mouth 230, the cable 100 can enter the first cable storage compartment 212 and the second cable storage compartment 222 more accurately when retracting.

[0073] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements, or modifications based on the present invention to achieve substantially the same technical effects are all within the scope of protection of the present invention.

Claims

1. The power cord has a built-in routing structure, which is characterized by: include a cable having at least one helical segment; At least one cable storage assembly is provided with at least one cable storage bin for storing the cables, the spiral segment is stored in the cable storage bin and telescopically moves along the cable storage bin, thereby realizing adaptive arrangement of the cables during dynamic telescopic process.

2. The internal wiring structure for power cables according to claim 1, wherein: The cable storage bin is provided with a bell mouth at one end close to the direction of telescopic movement of the cable, for guiding the cable to be stored.

3. The internal wiring structure for power cables according to claim 1, wherein: At least one end of the cable storage bin is provided with a limiting notch, and a first straight line segment connected to the spiral segment passes through the limiting notch to inhibit longitudinal or lateral movement of the cable.

4. The internal wiring structure for power cables according to claim 1, wherein: It also includes a tail end fixing piece. The cable storage assembly is provided with a through hole. A locking pin passes through the through hole and is connected to the tail end fixing piece to achieve a fixed connection between the cable storage assembly and the tail end fixing piece.

5. The internal wiring structure for power cables according to claim 1, wherein: The cable storage assembly includes a first cable storage assembly and a second cable storage assembly, and the first cable storage assembly is detachably connected to the second storage assembly.

6. The internal wiring structure for power lines according to claim 5, characterized in that: The first cable storage assembly is provided with a first mating block with a mating hole, and the second cable assembly is provided with a second mating block. The second mating block is inserted into the mating hole of the first mating block to achieve a detachable connection between the first cable storage assembly and the second storage assembly.

7. A lifting column comprising an outer tube and at least one telescopic tube, wherein the telescopic tube is embedded in the outer tube, characterized in that: It also includes a power cord built-in wiring structure according to any one of claims 1 to 6, wherein the power cord built-in wiring structure is detachably connected to the telescopic tube or the outer tube.

8. The lifting column according to claim 7, characterized in that: It also includes a motor mounting box connected to the telescopic tube or the end of the outer tube and a screw assembly housing detachably connected to the built-in wiring structure of the power cord. A drive motor is provided in the motor mounting box, and the drive motor is connected to the screw assembly housing through a screw.

9. The lifting column according to claim 8, characterized in that: The outer tube or the telescopic tube is provided with a fixing plate, and the cable further comprises a second straight segment connected to the spiral segment, and the second straight segment is respectively connected to the motor mounting box and the fixing plate through a first locking member and a second locking member.

10. The lifting column according to claim 9, characterized in that: The cable further includes connection ends connected to the second straight segment, and the connection ends are respectively connected to a coupler and a power socket provided on the motor mounting box.

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