CN217187641U

CN217187641U - Horizontal bar

Info

Publication number: CN217187641U
Application number: CN202220455040.5U
Authority: CN
Inventors: 徐剑
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-08-16
Anticipated expiration: 2032-03-03

Abstract

The utility model provides a horizontal bar, includes that main part pipe and activity cover establish the flexible pipe on the main part pipe, its characterized in that: the locking device comprises a main body pipe and a telescopic pipe, and is characterized by further comprising a locking sleeve movably sleeved on the telescopic pipe, wherein a limiting groove extending along the length direction of the telescopic pipe is formed in the outer peripheral surface of the telescopic pipe, a limiting protrusion embedded into the limiting groove is arranged on the locking sleeve, a locking protrusion is arranged at the end part of the main body pipe, the locking sleeve is provided with a locking section which can be sleeved at the end part of the main body pipe in an interference fit manner, the locking section is provided with a locking groove in which the locking protrusion can be embedded, the locking sleeve limits the relative rotation of the main body pipe and the telescopic pipe, the locking section is in interference fit with the end part of the main body pipe, the locking sleeve can be kept at a position limiting the relative rotation of the main body pipe and the telescopic pipe, and the locking section is separated from the main body pipe by the interference fit to exert a certain force.

Description

Horizontal bar

Technical Field

The utility model relates to a horizontal bar especially relates to a length-adjustable can support the horizontal bar between two vertical faces.

Background

The known horizontal bar capable of being supported between two vertical surfaces mainly comprises a main body pipe, two telescopic pipes, two fixed seats and a screw-nut pair, wherein the two telescopic pipes are movably sleeved at two ends of the main body pipe, the two fixed seats are fixedly arranged at the end parts of the two telescopic pipes, the screw-nut pair comprises a screw rod fixedly arranged in the main body pipe and a nut fixedly arranged on the telescopic pipes and in threaded fit with the screw rod, the main body pipe and the telescopic pipes can be driven to move in a telescopic manner by relative rotation of the screw-nut pair, so that the length of the horizontal bar is adjusted, the horizontal bar can be reliably supported between the two vertical surfaces, a locking mechanism for limiting the relative rotation of the main body pipe and the telescopic pipes needs to be arranged after the horizontal bar is fixed, and the conventional locking mechanism is complex in structure and high in cost.

Disclosure of Invention

The utility model aims at the not enough of prior art, provide a horizontal bar, this horizontal bar adopts simple structure, with low costs locking mechanical system.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a horizontal bar, includes that main part pipe and activity cover establish the flexible pipe on the main part pipe, its characterized in that: the locking device is characterized by further comprising a locking sleeve movably sleeved on the telescopic pipe, a limiting groove extending along the length direction of the telescopic pipe is formed in the outer peripheral surface of the telescopic pipe, a limiting protrusion embedded into the limiting groove is arranged on the locking sleeve, a locking protrusion is arranged at the end portion of the main pipe, the locking sleeve is provided with a locking section which can be sleeved on the end portion of the main pipe in an interference fit mode, and a locking groove for the locking protrusion to be embedded into is formed in the locking section. Spacing groove and spacing protruding cooperation restriction lock sleeve rotate relative flexible pipe, make the lock sleeve only can follow the axial displacement of telescopic pipe and unable rotation, when the locking section interference cover of lock sleeve was established at main body pipe tip, the protruding embedding lock groove of locking makes the main body pipe unable relative lock sleeve rotate, restrict the relative rotation of main body pipe and flexible pipe promptly, wherein, locking section and main body pipe tip interference fit, can make the lock sleeve keep in restriction main body pipe and flexible pipe relative pivoted position, this interference fit makes the locking section break away from the main body pipe and need exert certain power.

The inner circumferential surface of the locking section is provided with a plurality of circumferentially arranged locking grooves, and the plurality of locking grooves are arranged to ensure that the locking section can enable the locking protrusion to be embedded into one of the locking grooves in most of the angle range to realize locking and positioning.

The locking groove extends along the length direction of the locking section, so that the locking protrusion can be conveniently embedded.

And a positioning bulge which can be in interference fit with the end part of the main pipe is formed between every two adjacent locking grooves. Namely, the positioning bulges are matched with the peripheral surface of the end part of the main body pipe in an interference fit mode.

The positioning bulge extends along the length direction of the locking section, the top surface of the positioning bulge is in contact with the outer peripheral surface of the main body pipe, the friction force between the positioning bulge and the outer peripheral surface of the main body pipe can be increased by the positioning bulge extending along the length direction of the locking section, and the fixing reliability of the locking sleeve is improved.

The end part of the positioning bulge is provided with a guide inclined plane which enables the process that the locking section is sleeved on the main pipe to be smoother.

The locking sleeve comprises a locking section and a sliding section which are connected with each other, the limiting protrusion is formed on the inner wall of the sliding section, the sliding section is in sliding fit with the telescopic pipe, and the locking section is in interference fit with the main pipe.

The inner diameter of the locking section is smaller than that of the sliding section to form a limiting step, and the limiting step can abut against the end part of the main pipe, so that the position of the locking sleeve is limited.

The periphery of the locking sleeve is provided with a protruding annular operating part. The annular operating part can be convenient for operating the locking sleeve.

The main body pipe is made of metal materials, and the locking sleeve is made of plastics. Namely, the hardness of the locking section of the locking sleeve is less than that of the main body pipe and has a certain elastic deformation amount, so that the locking section can be better in interference fit with the main body pipe.

The main body pipe is made of metal materials, and the locking protrusion is formed by stamping the main body pipe. The manufacturing process is simple and the cost is low.

The end part of the main body pipe is sleeved with a guide sleeve, and the guide sleeve is matched with the outer diameter of the telescopic pipe. The guide sleeve can guide the telescopic pipe to slide, and a certain gap is formed between the telescopic pipe and the main pipe.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a sectional view taken along line B-B of fig. 2.

Fig. 5 is an enlarged view of a portion a in fig. 3.

Fig. 6 is an exploded view of a part of the present invention.

Fig. 7 is a partial exploded view of another perspective of the present invention.

Fig. 8 is a perspective view of the locking sleeve.

Detailed Description

Referring to fig. 1 to 8, a horizontal bar includes a main body tube 1, two extension tubes 2, two fixing bases 5, a screw nut pair and a locking sleeve 3, the main body tube 1 and the extension tubes 2 are metal pipe fittings, the two extension tubes 2 are movably sleeved at two ends of the main body tube 1, two ends of the main body tube 1 are sleeved with guide sleeves 13, the guide sleeves 13 are adapted to outer diameters of the extension tubes 2 to guide sliding of the extension tubes 2, and a certain gap is formed between the extension tubes 2 and the main body tube 1. The two fixing seats 5 are fixedly arranged at the free ends of the two extension tubes 2, the screw-nut pair comprises a screw 61 fixedly arranged in the main tube 1 through a pin 611 and a nut 62 fixedly arranged at the end part of the extension tube 2 and in threaded fit with the screw 61, and the relative rotation of the main tube 1 and the extension tube 2 can drive the extension tube 2 to extend and retract so as to adjust the length of a horizontal bar.

The locking sleeve 3 is composed of a locking section 3a and a sliding section 3b, the locking section 3a and the sliding section 3b are coaxially arranged and integrally injection-molded, the locking sleeve 3 is movably sleeved on the telescopic pipe 2, a limit groove 21 extending along the length direction of the telescopic pipe 2 is formed on the outer peripheral surface of the telescopic pipe 2, a limit bulge 34 embedded into the limit groove is formed on the inner wall of the sliding section 3b of the locking sleeve 3, a locking bulge 12 is formed on the outer peripheral surface of the end portion of the main pipe 1 in a stamping mode, the locking section 3a of the locking sleeve 3 can be sleeved on the end portion of the main pipe 1 in an interference mode, namely, the inner diameter of the locking section 3a is slightly smaller than the outer diameter of the main pipe 1, the locking section 3 is provided with a locking groove 31 into which the locking bulge 12 can be embedded, the inner diameter of the locking section 3a is smaller than the inner diameter of the sliding section 3b to form a limit step 35, and the limit step 35 can abut against the end portion of the main pipe 1 so as to limit the position of the locking sleeve 3. The outer diameter of the sliding section 3b of the locking sleeve 3 is enlarged to form a protruded annular operating part 36, the annular operating part 36 can facilitate the operation of the locking sleeve 3, and a plurality of hollow grooves arranged circumferentially are formed on the end surface of the sliding section 3b for saving materials.

The limiting groove 21 and the limiting protrusion 34 cooperate to limit the locking sleeve 3 to rotate relative to the telescopic tube 2, so that the locking sleeve 3 can only move along the axial direction of the telescopic tube 2 and cannot rotate, when the locking section 3a of the locking sleeve 3 is sleeved at the end of the main tube 1 in an interference manner, the locking protrusion 12 is embedded into the locking groove 31, so that the main tube 1 cannot rotate relative to the locking sleeve 3, namely, the relative rotation of the main tube 1 and the telescopic tube 2 is limited, wherein the locking section 3a is in interference fit with the end of the main tube 1, so that the locking sleeve 3 can be kept at a position for limiting the relative rotation of the main tube 1 and the telescopic tube 2, and the interference fit enables the locking section 3a to be separated from the main tube 1 and a certain force needs to be applied.

The inner peripheral surface of the locking section 3a is formed with a plurality of locking grooves 31 which are arranged in a circle and extend along the length direction, the plurality of locking grooves 31 are arranged to enable the locking protrusion 12 to be embedded into one of the locking grooves 31 to realize locking and positioning in most of the angle range of the locking section 3a, and a positioning protrusion 32 which can be in interference fit with the outer peripheral surface of the end part of the main tube 1 is formed between two adjacent locking grooves 31. That is, the positioning protrusions 32 are in interference fit with the outer peripheral surface of the end portion of the main tube 1, the positioning protrusions 32 extend along the length direction of the locking section, the cross section of the positioning protrusions 32 is substantially rectangular, the top surfaces of the positioning protrusions 32 are in contact with the outer peripheral surface of the main tube 1, the positioning protrusions 32 extending along the length direction of the locking section 3a can increase the contact surface between the positioning protrusions 32 and the outer peripheral surface of the main tube 1, friction is improved, and finally the reliability of fixing the locking sleeve 3 is improved, the end portions of the positioning protrusions 32 are provided with the guide inclined surfaces 321, and the guide inclined surfaces 321 enable the process of sleeving the locking section 3 on the main tube 1 to be smoother.

In order to facilitate horizontal adjustment of a horizontal bar, a level instrument seat is arranged in the middle of the main body pipe, a level instrument is mounted on the level instrument seat, and two buffer sleeves 11 located on two sides of the level instrument seat are arranged on the main body pipe 1 in order to facilitate holding of the horizontal bar.

When a horizontal bar needs to be installed, a certain force is applied to enable the locking section 3a of the locking sleeve 3 to be separated from the end portion of the main body pipe 1, the main body pipe 1 and the telescopic pipe 2 are operated to rotate relatively, the main body pipe 1 and the telescopic pipe 2 rotate relatively through the lead screw nut pair, the telescopic pipe 2 is driven to stretch and move in a stretching mode to adjust the length of the horizontal bar, the horizontal bar is supported between two vertical surfaces, after the horizontal bar is installed reliably, a certain force is applied to enable the locking section 3a of the locking sleeve 3 to be sleeved at the end portion of the main body pipe 1 in an interference mode, at the moment, the locking protrusion 12 on the main body pipe 1 is embedded into the locking groove 31, the main body pipe 1 cannot rotate relative to the locking sleeve 3, and the relative rotation of the main body pipe 1 and the telescopic pipe 2 is limited.

The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.

Claims

1. The utility model provides a horizontal bar, includes that main part pipe (1) and activity cover establish flexible pipe (2) on main part pipe (1), its characterized in that: the telescopic pipe is characterized by further comprising a locking sleeve (3) movably sleeved on the telescopic pipe (2), a limiting groove (21) extending along the length direction of the telescopic pipe is formed in the outer peripheral surface of the telescopic pipe (2), a limiting protrusion (34) embedded into the limiting groove (21) is arranged on the locking sleeve (3), a locking protrusion (12) is arranged at the end portion of the main body pipe (1), the locking sleeve (3) is provided with a locking section (3a) which can be sleeved on the end portion of the main body pipe (1) in an interference mode, and a locking groove (31) which can be used for the locking protrusion (12) to be embedded into is formed in the locking section (3 a).

2. A horizontal bar as claimed in claim 1, wherein: the inner circumferential surface of the locking section (3a) is formed with a plurality of locking grooves (31) arranged circumferentially.

3. A horizontal bar as claimed in claim 2, wherein: the locking groove (31) extends in the length direction of the locking section (3 a).

4. A horizontal bar as claimed in claim 2, wherein: a positioning bulge (32) which can be in interference fit with the end part of the main body pipe (1) is formed between two adjacent locking grooves (31).

5. A horizontal bar as claimed in claim 4, wherein: the positioning protrusion (32) extends along the length direction of the locking section (3 a).

6. A horizontal bar as claimed in claim 4, wherein: the end of the positioning projection (32) is formed with a guide slope (321).

7. A horizontal bar according to any one of claims 1 to 6, wherein: the locking sleeve (3) comprises a locking section (3a) and a sliding section (3b) which are connected with each other, and the limiting protrusion (34) is formed on the inner wall of the sliding section (3 b).

8. A horizontal bar as claimed in claim 7, wherein: the inner diameter of the locking section (3a) is smaller than that of the sliding section (3b) to form a limiting step.

9. A horizontal bar according to any one of claims 1 to 6, wherein: the periphery of the locking sleeve (3) is provided with a protruding annular operating part (36).

10. A horizontal bar according to any one of claims 1 to 6 wherein: the main body pipe (1) is made of metal materials, and the locking sleeve (3) is made of plastics.

11. A horizontal bar according to any one of claims 1 to 6, wherein: the main body pipe (1) is made of metal materials, and the locking protrusion (12) is formed by stamping the main body pipe (1).

12. A horizontal bar according to any one of claims 1 to 6, wherein: the end part of the main body pipe (1) is sleeved with a guide sleeve (13), and the guide sleeve (13) is matched with the outer diameter of the extension pipe (2).