CN213810161U - Rotation module, desk lamp accessory and desk lamp - Google Patents

Abstract

The embodiment of the application provides a rotation module, desk lamp accessory and desk lamp. The rotating module is provided with an axis and comprises a shaft core, a shaft sleeve assembly, a threading hole and a torsion assembly; the shaft sleeve assembly is sleeved on the shaft core, the torsion assembly is sleeved on the shaft core, the shaft sleeve assembly is clamped with the shaft core by the torsion assembly, and the threading hole penetrates through the shaft core and the shaft sleeve assembly along the axis. The desk lamp accessory comprises a rotating module, electric wires and lamp posts, wherein the lamp posts are of hollow structures, one of the two adjacent lamp posts is fixedly connected with the shaft core, the other lamp post is fixedly connected with the shaft sleeve assembly, and the electric wires enter the inside of the other adjacent lamp post through the threading holes from the inside of one lamp post. The desk lamp comprises a lamp holder, a lamp holder and desk lamp accessories, the lamp holder and the lamp holder are respectively connected with two lamp posts at the outermost ends of the desk lamp accessories, and the lamp holder are electrically connected through wires. The rotation module, desk lamp accessory and desk lamp that this application embodiment provided can pass and can adjust and keep turned angle more nimble by the power supply line.

Description

Rotation module, desk lamp accessory and desk lamp

Technical Field

The application relates to the technical field of lighting, especially, relate to a rotate module, desk lamp accessory and desk lamp.

Background

The desk lamp is an indispensable lighting device in daily study and work. The key function of the desk lamp is rotation and folding, so that the position of the lamp holder can be adjusted.

The rod type desk lamp in the related art comprises two or more lamp rods, two adjacent lamp rods are connected through a rotating shaft, and the position of a lamp holder is adjusted by adjusting the folding angle between the lamp rods. However, the rotating shaft in the related art generally functions only in rotation and a certain degree of posture maintaining function, and the common wire cannot pass through. Although a part of rotating shafts can pass through the common wire, the posture maintaining function of the rotating shafts is greatly reduced, and even the lamp holder can only overcome the gravity to maintain the posture of the lamp holder under a limited number of postures, so that the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a rotation module, a desk lamp accessory and a desk lamp, so that the problems are solved.

The embodiment of the application adopts the following technical scheme:

in a first aspect, an embodiment of the present application provides a rotation module, which includes an axis, and includes a shaft core, a shaft sleeve assembly, a threading hole, and a torsion assembly;

the shaft sleeve assembly is sleeved on the shaft core and can rotate relative to the shaft core around the axis, the torque assembly is sleeved on the shaft core, at least one part of the shaft sleeve assembly is clamped by the torque assembly and the shaft core, so that friction force is formed between the shaft sleeve assembly and the torque assembly, and the threading hole is penetrated through the shaft core and the shaft sleeve assembly along the axis.

Optionally, in the above-mentioned rotating module, a first axial blocking portion is disposed on the shaft core, the shaft sleeve assembly includes a first shaft sleeve, the first shaft sleeve is sleeved on the shaft core and forms an annular assembly cavity with the shaft core, the annular assembly cavity has an installation end and a limit end, the torque assembly is assembled in the annular assembly cavity and is relatively fixed with the shaft core in the direction along the axis, a second axial blocking portion is disposed on the first shaft sleeve and is located in the annular assembly cavity and blocks the torque assembly to be separated from the annular assembly cavity by the limit end, and the second axial blocking portion is clamped by the torque assembly and the first axial blocking portion.

Optionally, in the aforesaid rotation module, the axle sleeve subassembly still includes the second axle sleeve, the second axle sleeve with first axle sleeve fixed connection and seal the loading end, the through wires hole includes first through wires hole and second through wires hole, first through wires hole runs through the axle core, the second through wires hole run through the second axle sleeve and with first through wires hole communicates with each other.

Optionally, in the foregoing rotating module, the rotating module further includes a rotation limiting member and a rotation limiting fitting member, the rotation limiting member and the shaft core are relatively fixed in the circumferential direction of the axis, the rotation limiting fitting member and the shaft sleeve assembly are relatively fixed in the circumferential direction of the axis, and the rotation limiting member and the rotation limiting fitting member cooperate to limit the rotation angle of the shaft sleeve assembly around the axis relative to the shaft core.

Optionally, in the foregoing rotation module, the rotation limiting fitting is fixedly disposed on the second bushing, a fixing notch is disposed at an end of the shaft core extending into the first bushing, a part of the rotation limiting member is embedded in the fixing notch, and another part of the rotation limiting member is located on a moving track of the rotation limiting fitting when the shaft bushing assembly rotates around the axis relative to the shaft core.

Optionally, in the foregoing rotation module, a central angle range corresponding to the rotation limiting member is 90 degrees, and a central angle range corresponding to the rotation limiting fitting member is 90 degrees.

Optionally, in foretell rotation module, still include axle center connecting piece and axle sleeve connecting piece, the axle center is deviating from one side of axle sleeve subassembly is provided with axle center locking end, the second axle sleeve is provided with axle sleeve locking end in the one side that deviates from first axle sleeve, axle center connecting piece with axle center locking end can be dismantled and be connected, the axle sleeve connecting piece with axle sleeve locking end can be dismantled and be connected.

Optionally, in the above-mentioned rotating module, the second shaft sleeve is fixed to the first shaft sleeve in an interference fit manner.

Optionally, in the above-mentioned rotating module, the torque assembly includes a washer set and a clamping nut, the spindle is provided with a threaded connection portion, the washer set and the clamping nut are sequentially assembled in the annular assembly cavity, and the clamping nut is fixedly connected with the threaded connection portion through a thread and presses the washer set to clamp the second axial blocking portion between the first axial blocking portion and the washer set.

In a second aspect, the embodiment of the application provides a desk lamp accessory, include rotation module, electric wire and two piece at least lamp poles, the lamp pole is hollow structure, adjacent two one of them in the lamp pole with axle core fixed connection, another with axle sleeve subassembly fixed connection, the electric wire is by one the inside process of lamp pole the through wires hole gets into another adjacent inside of lamp pole.

Optionally, in the above-mentioned desk lamp accessory, the desk lamp accessory further includes an end cover, the number of the end cover is the same as the number of the lamp poles, the lamp pole has a connection end, the axle core is penetrated into the inside of the lamp pole by one side wall of the connection end of the lamp pole, the axle sleeve assembly is penetrated into the inside of the adjacent lamp pole by the adjacent side wall of the connection end of the lamp pole, and each port of the connection end is sealed by the end cover.

In a third aspect, the embodiment of the application provides a desk lamp, including lamp holder, lamp stand and desk lamp accessory, the lamp holder and the lamp stand respectively with be in two of desk lamp accessory outermost end the lamp pole is connected, the electric wire electricity is connected the lamp holder and the lamp stand.

The technical scheme adopted by the application can achieve the following beneficial effects:

the rotation module, desk lamp accessory and desk lamp that this application embodiment provided can pass and can adjust and keep turned angle more nimble by the power supply line.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is an overall structural view of a desk lamp provided in an embodiment of the present application;

fig. 2 is an exploded view of a desk lamp according to an embodiment of the present disclosure;

fig. 3 is a cross-sectional structural view of a rotary connection module for connecting a lamp socket and a lamp post according to an embodiment of the present disclosure;

fig. 4 is an exploded view of a rotary connection module for connecting a lamp socket and a lamp post according to an embodiment of the present disclosure;

fig. 5 is a view of an assembly structure of a rotary connection module for connecting a lamp socket and a lamp post according to an embodiment of the present disclosure;

fig. 6 is a structural view of the desk lamp provided by the embodiment of the present application in a folded state;

fig. 7 is an overall structural view of a rotation module according to an embodiment of the present disclosure;

fig. 8 is an exploded view of a rotating module according to an embodiment of the present disclosure;

fig. 9 is an exploded view of the rotation module according to the embodiment of the present disclosure, as viewed from one side when the torsion assembly and the rotation limiting member are mounted on the shaft core;

FIG. 10 is a view of the exploded structure of FIG. 9 from the other side;

fig. 11 is a cross-sectional structural view of a rotating module according to an embodiment of the present application;

fig. 12 is an exploded view of a rotating module connecting light pole according to an embodiment of the present disclosure;

fig. 13 is an assembly structure view of the rotating module connecting rod according to the embodiment of the present application.

Reference numerals:

1-lamp holder, 10-lamp holder upper cover, 100-limit bulge, 11-lamp holder lower cover, 12-control panel, 13-balancing weight, 14-silica gel pad, 2-lamp pole, 20-connecting end, 21-connecting hole, 22-end cover, 3-lamp holder, 30-lamp holder upper cover, 31-lamp holder lower cover, 32-light source panel, 33-optical panel, 4-rotary connecting module, 40-rotary folding piece, 400-rotary connecting end, 401-external connecting end, 41-rotary base, 410-rotary shaft, 42-elastic clamping component, 43-torsion component, 44-pressing component, 440-circumferential bulge, 45-screw, 46-gasket, 460-limit matching groove, 47-clamping part, 5-rotary module, 50-shaft core, 500-first axial blocking part, 501-fixed notch, 502-shaft core locking end, 51-shaft sleeve component, 510-first shaft sleeve, 511-second axial blocking part, 512-second shaft sleeve, 513-shaft sleeve locking end, 52-threading hole, 520-first threading hole, 521-second threading hole, 53-torsion component, 530-gasket group, 531-clamping nut, 54-annular assembly cavity, 540-assembly end, 55-rotation limiting part, 56-rotation limiting matching piece, 57-shaft core connecting piece and 58-shaft sleeve connecting piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a desk lamp, as shown in fig. 1, the desk lamp comprises three basic parts, namely a lamp holder 1, a lamp post 2 and a lamp holder 3. As shown in fig. 2, the lamp socket 1 generally includes a socket housing composed of a socket upper cover 10 and a socket lower cover 11, and a control board 12 disposed in the socket housing. In addition, in order to make the desk lamp stand on the desktop stably, auxiliary structures such as a balancing weight 13 and a silica gel pad 14 at the bottom can be further arranged. The base 3 may generally comprise a base housing composed of a base upper cover 30 and a base lower cover 31, and optical components such as a light source board 32 and an optical board 33 may be disposed inside the base housing.

The lamp holder 1 and the lamp cap 3 can be connected through the lamp post 2. In the related art, in order to adjust the position and orientation of the lamp holder 3, the lamp posts 2 are usually designed to be bendable or foldable in angle to adjust the lamp holder, for example, in this embodiment, at least two lamp posts 2 may be provided, two adjacent lamp posts 2 are basically arranged end to end and connected through the rotation module 5 to realize relative rotation, and the lamp holder 1 and the lamp holder 3 are respectively connected with the two outermost lamp posts 2. However, the angle between the lamp post 2 and the lamp holder 1 and the lamp head 3 cannot be adjusted basically, so that the degree of folding the whole desk lamp is limited. Therefore, in the present embodiment, in order to make it possible to fold the base 1 and the base 3 more largely, the rotary connection module 4 is provided as a connection member for connecting the stem 2 and the base 1 and the base 3.

The rotating connection module 4 in this embodiment includes a mounting base, and the mounting base is used for fixedly connecting the rotating connection module 4 with the lamp holder 1 or the lamp cap 3. As shown in fig. 1 and fig. 2, the lamp holder 1 and the lamp post 2, and the lamp cap 3 and the lamp post 2 are respectively connected and fixed by a rotary connection module 4. In some embodiments, the mounting base may be fixedly connected to the socket housing of the socket 1 or the cap housing of the cap 3, and in some more preferred embodiments, the mounting base may also be integrated into the socket housing of the socket 1 or the cap housing of the cap 3. In the embodiment shown in fig. 2, the mounting base of the rotary connection module 4 for connecting the socket 1 and the lamp post 2 is integrated on the socket cover 10, and the mounting base of the rotary connection module 4 for connecting the lamp cap 3 and the lamp post 2 is integrated on the cap cover 30.

The following description will take the rotary connection module 4 for connecting the socket 1 and the lamp post 2 as an example. As shown in fig. 3 to 5, the rotary connection module 4 further includes a rotary folding member 40, a rotary base 41 and an elastic locking member 42, wherein the rotary base 41 is rotatably connected to the mounting base (i.e., the socket cover 10) and enables the rotary base 41 to rotate relative to the socket cover 10 about the first axis Z.

In the present embodiment, in order to make the rotary base 41 to be held at any position during the rotation process as desired by the operator, a torsion member 43 and a pressing member 44 may be provided in the rotary connection module. The pressing member 44 and the rotating base 41 may be fixedly connected by a screw 45, and the torsion member 43 and the base upper cover 10 are located between the rotating base 41 and the pressing member 44 and pressed by the two. During rotation, since the torsion member 43 is always in a compressed state, the torsion member 43 generates a resistance force against the rotation, and the operator must apply a torsion force to the rotary base 41 enough to overcome the resistance force to rotate the rotary base. When the torque is removed, the rotation of the rotary seat 41 is inhibited by the resistance, so that the rotary seat is kept at the current position. The torsion member 43 may comprise a plurality of bowl-shaped discs, which can be elastically deformed when pressed, thereby further increasing the resistance.

The torsion member 43 may be disposed between the base cover 10 of the rotary base 41, but this may expose to the outside, which affects the appearance, so it is preferable to dispose the torsion member 43 between the base cover 10 and the pressing member 44. Since the base top cover 10 is usually a plastic member, in order to prevent the torsion member 43 from being damaged by direct contact and friction with the base top cover 10, the rotating connection module 4 in this embodiment may further include a gasket 46, which is disposed on a side of the socket top cover 10 away from the rotating base 41 and is relatively fixed with the socket top cover 10 in the circumferential direction of the first axis Z, and the torsion member 43 is compressed between the gasket 46 and the compressing member 44.

Since the desk lamp is generally used to illuminate the front, the lamp head 3 is rarely adjusted to the back, and therefore, the lamp socket 1 is generally flat and the weight 13 is disposed in the front for cost reduction. Thus, if the lamp head 3 is rotated to the rear, the desk lamp is likely to topple. Therefore, in order to avoid this, the rotation range of the rotary base 41 needs to be limited. Therefore, in the present embodiment, a rotation limiting member and a rotation limiting fitting member may be disposed in the rotation connection module 4, wherein the rotation limiting member is fixedly connected to the rotation base 41, the rotation limiting fitting member is fixedly connected to the lamp socket upper cover 10, and the rotation limiting member and the rotation limiting fitting member cooperate to limit the rotation angle of the rotation base 41.

The rotation limiting element may be directly disposed on the rotating base 41, or may also be disposed on another component fixedly connected to the rotating base 41, for example, as shown in fig. 4 and 5, the rotation limiting element in this embodiment is a circumferential protrusion 440 disposed on the pressing element 44. Similarly, the rotation limiting fitting may also be fixed at different positions of the lamp socket upper cover 10 according to different setting positions of the rotation limiting member, as shown in fig. 4 and 5, the rotation limiting member is a limiting protrusion 100 provided at a side of the lamp socket upper cover 10 away from the rotating base 41. The limiting protrusion 100 is located on the moving track of the circumferential protrusion 440 rotating with the rotating base 41. In this embodiment, the limiting protrusion 100 may also serve as a structure for keeping the spacer 46 and the socket upper cover 10 circumferentially fixed relatively, that is, a limiting engaging groove 460 matching with the limiting protrusion 100 may be formed on the spacer 46, and the limiting protrusion 100 is clamped in the limiting engaging groove 460 to prevent the spacer 46 and the socket upper cover 10 from circumferentially rotating relatively.

In this embodiment, the central angle range corresponding to the circumferential protrusion 440 may be 90 degrees, and the central angle range corresponding to the limiting protrusion 100 is also 90 degrees. Thus, the actual circle center angle that the circumferential protrusion 440 can rotate is 180 degrees, that is, the rotation of the rotary base 41 within the range of 180 degrees can be realized.

The above described configuration enables the rotation of the swivelling connection module 4 about the first axis Z, and it will be described how the swivelling connection module 4 enables the adjustment in the other dimension.

Referring to fig. 3 and 4, the rotating folding member 40 of the rotating connection module 4 extends along a straight line and has a rotating connection end 400 and an external connection end 401, the rotating connection end 400 and the rotating base 41 can be rotatably connected through a rotating shaft 410 hidden inside the rotating base 41 or other structures, and the rotating folding member 40 can rotate relative to the rotating base 41 around a second axis X perpendicular to the first axis Z.

The rotation connecting end 400 is provided with a plurality of clamping parts 47 along the circumferential direction of the second axis X, the elastic clamping component 42 is arranged on the rotating seat 41, and the elastic clamping component 42 can be matched and clamped with the clamping parts 47 under the condition that the external force applied to the elastic clamping component 42 is smaller than the elastic force, so that the rotation folding piece 40 is fixed relative to the rotating seat 41.

When the lamp holder is used, the external end 401 is connected with one end of the lamp post 2, an operator applies a rotating torque to the lamp post 2, and when the torque is enough to overcome the elastic force of the elastic clamping component 42, the lamp post 2 can drive the rotating folding component 40 to rotate around the second axis X together, and the elastic clamping component 42 is pushed away from the clamping part 47, so that the posture adjustment of the lamp post 2 relative to the lamp holder 1 is realized. When a new position 47 is rotated to align with the position 42, the position 42 can be locked with the position 47 again, and if the torque is removed, the angle between the rotating folding member 40 and the rotating base 41 can be limited by the position 47 and the position 42, so that the lamp post 2 and the lamp socket 1 can be fixed.

Since the lamp base 1 is located at the bottom, the rotation of the lamp post 2 relative to the lamp base 1 is usually limited to the area above the lamp base 1. For this purpose, the rotation connecting end 400 may be provided with the catching portions 47 within 90 degrees in the circumferential direction along the second axis X, and the density of the catching portions 43 may be determined according to the size of the rotation connecting end 400, the size of the catching portions 43, and a desired relative fixed angle, for example, one catching portion 43 may be provided at intervals of 30 degrees. When the elastic catch assembly 42 is snap-fitted with the catch portion 47 in the outermost position, the rotating folder 40 is in a posture extending along the first axis Z. In this way, the rotating folder 40 can be rotated by 90 degrees from a posture extending along the first axis Z to a posture perpendicular to the first axis Z.

The locking portion 47 in this embodiment may be a locking hole, and the elastic locking assembly 42 may include a thimble 420 and an elastic member 421 for providing an elastic force to the thimble 420 to make the thimble 420 extend into the locking portion 43. The elastic member 421 may be a spring, a resilient plate, or the like. In order to facilitate the pushing of the thimble 420 out by the positioning portion 47 along with the rotation of the rotating folding member 40, a guide surface may be provided on the thimble 420 or the positioning portion 47.

In order to enable the resilient detent assembly 42 to be better engaged with each detent 47, the resilient detent assembly 42 is preferably arranged along the first axis Z. Thus, the spring direction of the elastic locking component 42 will point to the second axis X, thereby exerting a stronger locking effect.

The lamp holder 1 and the lamp post 2 in this embodiment can be arbitrarily adjusted in the 180-degree hemispherical range by the connection of the rotary connection module 4. When the lamp pole 2 and the lamp holder 1 need to be folded for storage or packaging, the lamp pole and the lamp holder can be folded to be attached together (see fig. 6), so that the volume is greatly reduced, and the packaging cost and the logistics cost are saved.

Certainly, the rotary connecting module 4 for connecting the lamp holder 3 and the lamp post 2 can enable the lamp holder and the lamp post 2 to achieve the same folding effect, and the lamp holder 1 and the lamp holder 3 can be folded to the same side of the lamp post 2 even under the combined action of the two rotary connecting modules 4, so that the size of the desk lamp is greatly reduced.

When the product is assembled or sold to the outside, the structure that the rotary connecting module 4 and the lamp holder 1 or the lamp holder 3 are assembled into a whole can be used as a table lamp accessory, and the effect of reducing the volume is also achieved.

As shown in fig. 1 and fig. 2, in the present embodiment, two adjacent lamp posts 2 are rotatably connected by a rotating module 5. Specifically, referring to fig. 7 to 11, the rotation module 5 provided in this embodiment may include a shaft core 50 and a shaft sleeve assembly 51, the shaft sleeve assembly 51 is sleeved on the shaft core 50 and can rotate around its own axis a relative to the shaft core 50, and the rotation module 5 further has a threading hole 52 penetrating through the shaft core 50 and the shaft sleeve assembly 51 along the axis a. Depending on the configuration of the shaft 50 and the sleeve assembly 51, the threading hole 52 may be located entirely on the shaft 50, or may be partially located on the shaft 50 and partially located on the sleeve assembly 51. In addition, the rotating module 5 further includes a torsion member 53, the torsion member 53 is also sleeved on the shaft core 50, and at least a portion of the sleeve member 51 is clamped by the torsion member 53 and the shaft core 50, so that a friction force is formed between the sleeve member 51 and the torsion member 53.

The shaft core 50 in this embodiment may be provided with a first axial stopping portion 500, the shaft sleeve assembly 51 includes a first shaft sleeve 510, the first shaft sleeve 510 is sleeved on the shaft core 50 and forms an annular assembling cavity 54 with the shaft core 50, the annular assembling cavity 54 has an assembling end 540 and a limiting end (not numbered in the figure), and the torsion assembly 53 is assembled in the annular assembling cavity 54 and is relatively fixed with the shaft core 50 along the direction of the axis a. The first sleeve 510 is provided with a second axial blocking portion 511 which is located in the annular assembling cavity 54 and blocks the torsion component 53 from separating from the annular assembling cavity 54 from the limiting end, and the second axial blocking portion 511 is clamped by the torsion component 53 and the first axial blocking portion 500, so that friction force is formed between the sleeve component 51 and the torsion component 53.

The torsion assembly 53 in this embodiment may include a washer set 530 and a clamping nut 531, wherein the washer set 530 may include a plurality of flat washers and a plurality of elastic washers spaced apart from each other to provide a larger friction force. A threaded connection portion (not shown) may be provided on the shaft core 50, the washer group 530 and the clamping nut 531 are sequentially fitted in the annular fitting cavity 54, and the clamping nut 531 is fixedly threaded with the threaded connection portion and presses the washer group 530 to clamp the second axial stopper 511 between the first axial stopper 500 and the washer group 530.

In addition, a second shaft sleeve 512 can be arranged in the shaft sleeve assembly, the second shaft sleeve 512 and the first shaft sleeve 511 are fixedly connected through interference fit or other methods and seal the installation end 540, at this time, the threading hole 52 comprises a first threading hole 520 and a second threading hole 521, the first threading hole 520 penetrates through the shaft core 50, and the second threading hole 521 penetrates through the second shaft sleeve 512 and is communicated with the first threading hole 520.

When the lamp posts are connected, one of the two adjacent lamp posts 2 is fixedly connected with the shaft core 50, and the other one is fixedly connected with the shaft sleeve assembly 51. When an operator needs to adjust the angle between two adjacent lamp poles 2, a force can be applied to one of the lamp poles 2, and the force is transmitted to the shaft core 50 or the shaft sleeve assembly 51. When the applied force is larger than the friction force between the sleeve assembly 51 and the torsion assembly 53, the two lamp posts 2 can rotate relative to each other around the rotating shaft a. When the applied force disappears or is smaller than the friction force between the shaft sleeve component 51 and the torsion component 53, the shaft sleeve component 51 and the shaft core 50 stop rotating, so that the angle between the two lamp posts 2 is fixed, the rotation is convenient, firm and reliable, and the angle can be adjusted at will.

The power supply of the desk lamp is usually connected to the lamp base 1, and then the power is transmitted from the lamp base 1 to the lamp cap 3 by an internal wire (not shown). For aesthetic reasons and to prevent electric shock, the electrical wires are usually routed through the lamp stem 2 to the base 3 in a concealed manner. When entering the adjacent lamp post 2 from the inside of one lamp post 2, the wire can pass through the rotating module 5 through the threading hole 52, so that the wire is completely hidden.

In this embodiment, if two adjacent lamp posts 2 can rotate freely without limit, the wires inside are likely to be stranded, which causes a safety hazard. Therefore, the rotation module 5 in this embodiment may further include a rotation limiting member 55 and a rotation limiting fitting 56, the rotation limiting member 55 and the shaft core 50 are relatively fixed in the circumferential direction of the axis a, and the rotation limiting fitting 56 and the shaft sleeve assembly 51 are relatively fixed in the circumferential direction of the axis a. The rotation limiting member 55 cooperates with the rotation limiting fitting 56 to limit the rotation angle of the sleeve assembly 51 relative to the core 50 about the axis a.

Specifically, in the present embodiment, there are many ways to fix the rotation limiting member 55 and the shaft core 50 relatively in the circumferential direction of the axis a. For example, the rotation stopper 55 may be directly fixed to the shaft core 50. However, considering that the shaft core 50 needs to be sleeved with the shaft sleeve assembly 51 and the torsion assembly 53, the direct fixation of the rotation limiting member 55 on the shaft core 50 may affect the assembly of the shaft sleeve assembly 51 and the torsion assembly 53.

For this purpose, as shown in fig. 10, the rotation limiting fitting 56 is directly fixed on the second sleeve 512 in this embodiment, and as shown in fig. 8 and 9, a fixing notch 501 is provided at one end of the shaft core 50 extending into the first sleeve 510, a part of the rotation limiting member 55 is embedded in the fixing notch 501, and another part of the rotation limiting member 55 is located on the moving track of the rotation limiting fitting 56 when the shaft sleeve assembly 51 rotates around the axis a relative to the shaft core 50.

Referring to fig. 11, during assembly, the first shaft sleeve 510 may be firstly sleeved on the shaft core 50, then the torsion component 53 is sleeved on the shaft core 50 by the installation end 540 and is installed in the annular assembly cavity 54, after the torsion component 53 is installed, the rotation limiting member 55 is embedded in the fixing gap 501, finally the installation end 540 is closed by the second shaft sleeve 512, and the rotation limiting member 55 is fixed in the annular assembly cavity 54 by using the fixing gap 501, the first shaft sleeve 510 and the second shaft sleeve 512, and the rotation limiting member 55 is matched with the rotation limiting mating member 56.

In this embodiment, the central angle range corresponding to the rotation limiting member 55 may be 90 degrees, and the central angle range corresponding to the rotation limiting fitting 56 is also 90 degrees. Thus, the actual circle center angle of the rotation limiting member 55 is 180 degrees, and the relative rotation of the shaft core 50 and the shaft sleeve assembly 51 within the range of 180 degrees can be realized.

The rotating module 5 in this embodiment may further include a core connecting member 57 and a sleeve connecting member 58, the core 50 is provided with a core locking end 502 at a side facing away from the sleeve assembly 51, and the second sleeve 512 is provided with a sleeve locking end 513 at a side facing away from the first sleeve 510. The spindle connector 57 is removably coupled to the spindle locking end 502 by threads, pins, etc., and the sleeve connector 58 is also removably coupled to the sleeve locking end 513.

As shown in fig. 12 and 13, when two lamp poles 2 are rotatably connected, the axial locking end 502 can penetrate into the interior of one lamp pole 2 from the side wall of the connecting end 20 of the lamp pole 2, and then is locked with the axial locking end 502 from the interior of the lamp pole 2 through the axial connecting piece 57, so as to fixedly connect the axial 50 with the lamp pole 2. Similarly, the bushing locking end 513 is inserted into the interior of the lamp post 2 from the side wall of the connecting end 20 of the adjacent lamp post 2, and then is locked with the bushing locking end 513 from the interior of the lamp post 2 through the bushing connecting member 58, so as to fixedly connect the bushing assembly 51 to the lamp post 2.

In order to keep the lamp post 2 fixed relative to the shaft core 50 or the shaft sleeve assembly 51 without relative rotation, the shaft core locking end 502 and the shaft sleeve locking end 513 may be designed with non-circular cross-section, such as a runway type. Meanwhile, a connecting hole 21 with a corresponding shape is arranged on the side wall of the connecting end 20 of the lamp post 2. When the shaft core locking end 502 or the shaft sleeve locking end 513 passes through the connecting hole 21, the hole is not circular, so that the relative rotation between the lamp post 2 and the connected shaft core 50 or the shaft sleeve assembly 51 can be avoided. Further, the cross-sectional profiles of the core locking end 502 and the sleeve locking end 513 may be designed to have a shape of a partially circumscribed circular arc, such as a race type, so that threads may be provided on the core locking end 502 and the sleeve locking end 513, so that the core connecting member 57 and the sleeve connecting member 58 are still connected to the core locking end 502 and the sleeve locking end 513 through the threads, thereby reducing the difficulty of assembly.

For the sake of aesthetic appearance, each lamp post 2 may be provided with an end cap 22, and after the connection between the rotating module 5 and the lamp post 2 is completed, the end of each connecting end 20 is closed by one end cap 22.

Referring to fig. 13, when a product is assembled or sold for sale, the lamp post 2, the rotating module 5 and the electric wire (not shown in the figure) can be assembled into an integrated structure as a table lamp accessory, and after a consumer purchases the table lamp accessory, the lamp post 2 at the outermost end, the lamp holder 1 and the lamp holder 3 are only required to be assembled and connected, so that the table lamp can be upgraded or maintained.

To sum up, the desk lamp that this application embodiment provided has be convenient for fold, small in size, packaging cost is low, the lamp holder control range is wide, the gesture stability is good, adjust a great deal of advantages such as nimble, the assembly is simple and convenient.

The above-mentioned embodiments, which further illustrate the objects, technical solutions and advantages of the present application, should be understood that the above-mentioned embodiments are only examples of the present application and should not be construed as limiting the present application, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (12)

1. A rotating module is provided with an axis and is characterized by comprising a shaft core, a shaft sleeve assembly, a threading hole and a torsion assembly;

the shaft sleeve assembly is sleeved on the shaft core and can rotate relative to the shaft core around the axis, the torque assembly is sleeved on the shaft core, at least one part of the shaft sleeve assembly is clamped by the torque assembly and the shaft core, so that friction force is formed between the shaft sleeve assembly and the torque assembly, and the threading hole is penetrated through the shaft core and the shaft sleeve assembly along the axis.

2. The rotation module of claim 1, wherein the core is provided with a first axial stop portion, the sleeve assembly includes a first sleeve, the first sleeve is sleeved on the core and forms an annular assembly cavity with the core, the annular assembly cavity has a loading end and a limiting end, the torque assembly is assembled in the annular assembly cavity and is relatively fixed with the core along the axis, the first sleeve is provided with a second axial stop portion located in the annular assembly cavity and used for stopping the torque assembly from separating from the annular assembly cavity from the limiting end, and the second axial stop portion is clamped by the torque assembly and the first axial stop portion.

3. The rotation module of claim 2, wherein the bushing assembly further comprises a second bushing, the second bushing is fixedly connected with the first bushing and seals the loading end, the threading holes comprise a first threading hole and a second threading hole, the first threading hole penetrates through the shaft core, and the second threading hole penetrates through the second bushing and is communicated with the first threading hole.

4. The rotation module of claim 3, further comprising a rotation limiting member and a rotation limiting mating member, wherein the rotation limiting member and the shaft core are relatively fixed in the circumferential direction of the shaft axis, the rotation limiting mating member and the shaft sleeve assembly are relatively fixed in the circumferential direction of the shaft axis, and the rotation limiting member and the rotation limiting mating member cooperate to limit the rotation angle of the shaft sleeve assembly relative to the shaft core around the shaft axis.

5. The rotation module of claim 4, wherein the rotation limiting fitting is fixedly disposed on the second bushing, one end of the core shaft extending into the first bushing is provided with a fixing notch, a portion of the rotation limiting fitting is embedded in the fixing notch, and another portion of the rotation limiting fitting is located on a moving track of the rotation limiting fitting when the bushing assembly rotates around the axis relative to the core shaft.

6. The rotation module of claim 5, wherein the rotation limiting member corresponds to a central angle of 90 degrees, and the rotation limiting engagement member corresponds to a central angle of 90 degrees.

7. The rotation module according to any one of claims 3 to 6, further comprising a shaft core connector and a shaft sleeve connector, wherein the shaft core is provided with a shaft core locking end at a side away from the shaft sleeve assembly, the second shaft sleeve is provided with a shaft sleeve locking end at a side away from the first shaft sleeve, the shaft core connector is detachably connected with the shaft core locking end, and the shaft sleeve connector is detachably connected with the shaft sleeve locking end.

8. The rotating module according to any one of claims 3 to 6, wherein the second bushing is fixed with the first bushing in an interference fit.

9. The rotating module according to any one of claims 2 to 6, wherein the torque assembly includes a washer set and a clamping nut, the shaft core is provided with a threaded connection portion, the washer set and the clamping nut are sequentially assembled in the annular assembly cavity, and the clamping nut is fixedly connected with the threaded connection portion in a threaded manner and presses the washer set to clamp the second axial stop portion between the first axial stop portion and the washer set.

10. A desk lamp fitting, comprising the rotating module of any one of claims 1 to 9, an electric wire and at least two lamp posts, wherein the lamp posts are hollow structures, one of the two adjacent lamp posts is fixedly connected with the shaft core, the other is fixedly connected with the shaft sleeve assembly, and the electric wire enters the inside of the other adjacent lamp post through the wire hole from the inside of one lamp post.

11. The desk lamp fitting as claimed in claim 10, further comprising end caps, the number of the end caps being the same as the number of the lamp posts, the lamp posts having connection ends, the shaft core penetrating into the interior of one of the lamp posts through the side wall of the connection end of the lamp post, the shaft sleeve assembly penetrating into the interior of the adjacent lamp post through the side wall of the connection end of the adjacent lamp post, the port of each connection end being closed by the end cap.

12. A desk lamp, comprising a lamp cap, a lamp holder and the desk lamp fitting of claim 10 or 11, wherein the lamp cap and the lamp holder are respectively connected to two lamp posts at the outermost ends of the desk lamp fitting, and the wire is electrically connected to the lamp cap and the lamp holder.

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