CN219674119U - Telescopic boom - Google Patents

Abstract

The utility model discloses a telescopic boom, which comprises a boom component used for being connected with a lamp body, wherein the boom component consists of a fixed rod and an adjusting rod, an elastic ring piece is sleeved on the outer wall of the adjusting rod, a deformation groove is formed in the elastic ring piece, a locking sleeve is sleeved on the outer side of the elastic ring piece, the upper part of the locking sleeve is in threaded connection with the lower part of the fixed rod, the outer wall surface of the lower part of the elastic ring piece is a conical surface, and a ring-shaped extrusion part attached to the conical surface is arranged at the lower part of the locking sleeve. The locking sleeve is directly in threaded connection with the fixed rod, when the locking sleeve is screwed or unscrewed, the locking sleeve moves up and down relative to the elastic ring, and when the locking sleeve moves upwards, the annular extrusion part moves upwards to extrude the elastic ring, so that the elastic ring deforms to clamp the adjusting rod, and the adjusting rod, the elastic ring and the fixed rod are mutually locked. When the annular extrusion part moves downwards along with the locking sleeve, the elastic ring piece is separated from extrusion constraint to recover deformation, and the clamping and fixing of the adjusting rod are released.

Description

Telescopic boom

Technical Field

The present utility model relates to a telescopic boom.

Background

The prior art is like chinese patent document, and the bulletin number is CN215764822U, discloses a telescopic track lamp jib for exhibition, including track, jib, shot-light mount pad, the track is the rectangular structure of U type, and the bottom is equipped with the bar through line hole that sets up along its length direction, and at least two vertically setting's jib are installed at the track top, and a plurality of shot-light mount pad that is used for fixed shot-light is installed to the track bottom. The utility model can change the length of the whole hanging rod through the up-down movable fit between the inner rod and the sleeve, and fix the length of the hanging rod through the locking piece, thereby realizing the function of adjusting the track height; the arc-shaped plate can be contracted inwards by rotating the thread sleeve, and the arc-shaped plate is clamped on the rod body of the inner rod, so that the position between the inner rod and the sleeve is fixed.

The locking piece comprises a fixed ring fixed at the lower end of the sleeve, a plurality of arc plates are uniformly arranged on the lower end face of the fixed ring in a ring mode, the arc plates form a conical sleeve, the conical sleeve body is in threaded fit with a threaded sleeve, the threaded sleeve can be rotated, the arc plates can be contracted inwards through the threaded sleeve, the arc plates are clamped on the rod body of the inner rod, and the position between the inner rod and the sleeve is fixed.

Based on the above, in the prior art, a plurality of arc plates are arranged on the fixed ring, and the arc plates are attached to or separated from the inner rod in the vertical adjustment process through rotating on the arc plates through the threaded sleeve to realize vertical adjustment, so that locking or unlocking is realized. The locking mode has the problems that the fixing ring is fixedly connected with the sleeve by adopting the existing connecting mode such as welding and the like, then the threaded sleeve is in threaded connection with the arc plates, the whole assembly is completed by connecting the thread sleeve with the arc plates twice, and the assembly effect and the production efficiency are influenced due to the fact that the assembly steps are more. Secondly, the conical sleeve formed by a plurality of arc plates is also required to be provided with screw teeth, and the whole conical sleeve is too complex to process and is not beneficial to actual processing and production.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the telescopic boom has a simple structure, is convenient to assemble and reduces the connecting steps.

According to the flexible jib of this purpose design, including being used for the jib subassembly of being connected with the lamp body, the jib subassembly comprises dead lever and regulation pole, the upper end of regulation pole is pegged graft inside the dead lever, the cover is equipped with the elastic ring spare on the regulation pole outer wall, be equipped with on the elastic ring spare and vertically run through the deformation groove of elastic ring spare, the outside cover of elastic ring spare is equipped with the lock sleeve, the upper portion of lock sleeve with the lower part threaded connection of dead lever, the up end of elastic ring spare with the lower terminal surface of dead lever is laminated mutually the lower part outer wall surface of elastic ring spare is the conical surface, the lower part of lock sleeve be equipped with the annular extrusion part that the conical surface laminated mutually.

Preferably, a threaded hole is formed in the outer wall of the locking sleeve, a locking bolt is connected in the threaded hole in a threaded mode, and the locking bolt is attached to the outer wall of the elastic ring piece.

Compared with the prior art, the elastic ring piece is sleeved on the outer wall of the adjusting rod, a deformation groove longitudinally penetrating through the elastic ring piece is formed in the elastic ring piece, a locking sleeve is sleeved on the outer side of the elastic ring piece, the upper portion of the locking sleeve is in threaded connection with the lower portion of the fixing rod, the upper end face of the elastic ring piece is attached to the lower end face of the fixing rod, the outer wall face of the lower portion of the elastic ring piece is a conical face, and a ring-shaped extrusion portion attached to the conical face is arranged on the lower portion of the locking sleeve. According to the utility model, the elastic ring piece is adopted to replace the existing fixed ring and the conical sleeve, and when the device is assembled, the elastic ring piece is only required to be sleeved on the adjusting rod and is attached to the lower end face of the fixed rod, and compared with the existing fixed ring and the conical sleeve, the device has the advantages of more convenient assembly, simpler overall structure and more benefit to production. The locking sleeve is directly in threaded connection with the fixed rod, when the locking sleeve is screwed or unscrewed, the locking sleeve moves up and down relative to the elastic ring, and when the locking sleeve moves upwards, the annular extrusion part moves upwards to extrude the elastic ring, so that the elastic ring is deformed to clamp the adjusting rod, and the adjusting rod, the elastic ring and the fixed rod are mutually locked. When the annular extrusion part moves downwards along with the locking sleeve, the elastic ring piece is separated from extrusion constraint to recover deformation, and the clamping and fixing of the adjusting rod are released.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present utility model;

FIG. 4 is a second schematic cross-sectional view of the present utility model;

FIG. 5 is an enlarged schematic view of the structure of FIG. 4B according to the present utility model;

fig. 6 is a schematic perspective view of an elastic ring member according to the present utility model.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

Referring to fig. 1-6, a telescopic boom comprises a boom assembly 10 connected with a lamp body 20, the boom assembly 10 is composed of a fixed rod 110 and an adjusting rod 120, the upper end of the adjusting rod 120 is inserted into the fixed rod 110, an elastic ring member 140 is sleeved on the outer wall of the adjusting rod 120, a deformation groove 141 longitudinally penetrating through the elastic ring member 140 is formed in the elastic ring member 140, a locking sleeve 130 is sleeved on the outer side of the elastic ring member 140, the upper portion of the locking sleeve 130 is in threaded connection with the lower portion of the fixed rod 110, the upper end face of the elastic ring member 140 is attached to the lower end face of the fixed rod 110, a conical surface 142 is arranged on the outer wall surface of the lower portion of the elastic ring member 140, and a ring-shaped extrusion portion 131 attached to the conical surface 142 is arranged on the lower portion of the locking sleeve 130.

Specifically, the deformation groove 141 is used to divide the elastic ring member 140 into a non-closed ring with a certain deformation space, so that the deformation of the elastic ring member is forced by the ring-shaped pressing portion 131 to clamp the adjustment lever 120 during the up-and-down movement of the locking sleeve 130.

Specifically, referring to fig. 5, the inner wall of the locking sleeve 130 has an internal thread 134, and the lower outer wall of the fixing rod 110 has an external thread 111, and the internal thread 134 is screwed with the external thread 111.

According to the utility model, the elastic ring piece is adopted to replace the existing fixed ring and the conical sleeve, and when the assembly is carried out, the elastic ring piece is only required to be sleeved on the adjusting rod and is attached to the lower end face of the fixed rod, compared with the existing fixed ring and the conical sleeve, the elastic ring piece is required to be fixedly arranged at the upper end of the fixed rod, so that the assembly steps are reduced, and the assembly device has the advantages of being more convenient to assemble, simpler in integral structure and more beneficial to production.

The locking sleeve is directly in threaded connection with the fixed rod, when the locking sleeve is screwed or unscrewed, the locking sleeve moves up and down relative to the elastic ring, and when the locking sleeve moves upwards, the annular extrusion part moves upwards to extrude the elastic ring, so that the elastic ring is deformed to clamp the adjusting rod, and the adjusting rod, the elastic ring and the fixed rod are mutually locked. When the annular extrusion part moves downwards along with the locking sleeve, the elastic ring piece is separated from extrusion constraint to recover deformation, and the clamping and fixing of the adjusting rod are released. The adjusting rod can be adjusted up and down relative to the fixing rod.

Specifically, referring to fig. 5, a threaded hole 132 is formed in the outer wall of the locking sleeve 130, a locking bolt 30 is screwed in the threaded hole 132, and the locking bolt 30 is attached to the outer wall of the elastic ring 140.

The arrangement of the locking screw 30, which can perform a further locking function, can effectively enhance the overall locking stability.

Specifically, the elastic ring member 140 is made of rubber.

What is not described in detail in this specification is prior art known to those skilled in the art.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model, and the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying the number of technical features being indicated.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (3)

1. The utility model provides a flexible jib, includes jib subassembly (10) that are used for being connected with lamp body (20), jib subassembly (10) are constituteed by dead lever (110) and regulation pole (120), the upper end of regulation pole (120) is pegged graft inside dead lever (110), its characterized in that: the utility model discloses a device for adjusting the temperature of a liquid crystal display, including adjusting pole (120) outer wall, cover is equipped with elasticity ring spare (140) on adjusting pole (120), be equipped with on elasticity ring spare (140) and vertically run through deformation groove (141) of elasticity ring spare (140), the outside cover of elasticity ring spare (140) is equipped with lock sleeve (130), the upper portion of lock sleeve (130) with the lower part threaded connection of dead lever (110), the up end of elasticity ring spare (140) with the lower terminal surface of dead lever (110) laminating mutually the lower part outer wall surface of elasticity ring spare (140) is conical surface (142), the lower part of lock sleeve (130) be equipped with annular extrusion portion (131) that conical surface (142) laminated mutually.

2. A telescopic boom according to claim 1, characterized in that: the outer wall of the locking sleeve (130) is provided with a threaded hole (132), the threaded hole (132) is internally connected with a locking bolt (30) in a threaded manner, and the locking bolt (30) is attached to the outer wall of the elastic ring piece (140).

3. A telescopic boom according to claim 1, characterized in that: the elastic ring member (140) is made of rubber.