Flexible ball head type universal joint adjusted by spring

Abstract

The utility model relates to the technical field of ball head type universal joints, and discloses a spring adjusting flexible ball head type universal joint which comprises a rotating rod, a rotating ball head is arranged at the bottom of the rotating rod, a ball head seat is arranged outside the rotating ball head, an upper ejecting piece is matched with the bottom of the rotating ball head, a sliding rod is arranged at the bottom of the upper ejecting piece, and an upper ejecting spring is arranged outside the sliding rod. After the first elastic ring is opened, the first magnetic attraction ring is fixed to the outer wall of the rotating rod in a magnetic attraction mode, and meanwhile the outer ring is matched with the outer wall of the ball cup and matched with the second elastic ring and the second magnetic attraction ring to be fixed in a magnetic attraction mode. According to the spring adjusting flexible ball head type universal joint, the rubber part can be conveniently covered outside the rotating ball head and the ball head seat, so that the shade of the universal joint can be conveniently replaced when the shade is damaged, and the use convenience of the spring adjusting flexible ball head type universal joint is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball head universal joints, in particular to a spring-adjustable flexible ball head universal joint. Background Art

[0002] The spring-adjustable flexible ball joint is a mechanical connection device that is widely used in systems that need to transmit torque and rotation angle. Its main feature is to adjust the flexibility and damping effect of the ball joint through the pressure of the spring, so that the universal joint can have better buffering and adaptability when bearing load.

[0003] The existing spring-adjustable flexible ball head universal joint is usually composed of a ball head, a ball head seat, an upper member and a spring, and a truncated cone-shaped dust cover made of rubber is provided on the outside of the ball head. The dust cover is usually mounted on the outside of the ball head during installation, and the ball head is usually connected to an external connecting rod. Therefore, when the dust cover is broken, it is inconvenient to mount a new dust cover on the outside of the ball head. The connecting rod and the ball head need to be separated before the dust cover can be mounted. This makes it inconvenient to replace the dust cover and it is not convenient to use the dust cover. For this reason, we propose a spring-adjustable flexible ball head universal joint. Utility Model Content

[0004] The utility model aims to provide a spring-adjustable flexible ball-head universal joint to solve the problem of inconvenience in replacing the dust cover in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a spring-adjustable flexible ball-head universal joint, comprising:

[0006] A rotating rod, wherein a rotating ball head is arranged at the bottom of the rotating rod, a ball head seat is arranged outside the rotating ball head, an upper ejection piece is matched at the bottom of the rotating ball head, a sliding rod is arranged at the bottom of the upper ejection piece, an upper ejection spring is arranged outside the sliding rod, and a bottom rod is arranged at the bottom of the ball head seat;

[0007] Elastic ring 1, wherein a magnetic ring 1 matched with the outer wall of the rotating rod is arranged inside the elastic ring 1, a rubber piece is arranged at the bottom of the elastic ring 1, an outer ring is arranged at the bottom of the rubber piece, an elastic ring 2 is arranged at the bottom of the outer ring, a magnetic ring 2 is arranged inside the elastic ring 2, a Velcro 1 is arranged on the outer wall of the elastic ring 1, and a Velcro 2 is arranged on the outer wall of the outer ring;

[0008] The side piece is arranged outside the rubber piece, a plastic piece is arranged at the bottom of the side piece, and a moisture absorbing strip is arranged inside the plastic piece.

[0009] Preferably, a fitting sheet is provided on the outer wall of the rubber component.

[0010] Preferably, a cavity is provided inside the side piece.

[0011] Preferably, a sealing cover is provided on the side wall of the plastic part.

[0012] Preferably, the outer ring fits into the outer wall of the ball head seat.

[0013] Preferably, the sliding rod is slidably fitted into the bottom of the ball head seat.

[0014] Preferably, the upper push piece fits inside the ball head seat.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model opens the elastic ring 1 and fixes it to the outer wall of the rotating rod by magnetic attraction of the magnetic attraction ring 1, and makes the outer ring cooperate with the outer wall of the ball head seat and also cooperates with the elastic ring 2 and the magnetic attraction ring 2 to magnetically fix the outer ring, and then the Velcro 1 and the Velcro 2 and the bonding sheet are bonded, so that the rubber part can be conveniently covered on the outside of the rotating ball head and the ball head seat, so that the universal joint cover can be easily replaced when the cover is damaged, which increases the convenience of using the spring-adjustable flexible ball head universal joint.

[0017] 2. In the utility model, when the rubber part covers the connection between the ball head seat and the rotating ball head, the moisture absorption strip inside the plastic part can cooperate with the cavity of the side part to absorb moisture from the inside of the rubber part, so as to avoid the problem of excessive moisture at the connection between the ball head seat and the rotating ball head causing rust of the rotating ball head during long-term operation of the universal joint. This is beneficial to the long-term and stable use of the universal joint and has a moisture-proof protection effect on the rotating ball head. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the ball head seat of the utility model;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the rubber member and the outer ring of the utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the plastic part of the utility model.

[0022] In the figure: 100, rotating rod; 110, rotating ball head; 120, ball head seat; 130, bottom rod; 131, upper member; 132, upper spring; 133, sliding rod; 200, elastic ring 1; 201, magnetic ring 1; 210, Velcro 1; 220, rubber part; 221, fitting sheet; 222, outer ring; 223, Velcro 2; 230, elastic ring 2; 231, magnetic ring 2; 300, side member; 301, cavity; 310, plastic part; 311, sealing cover; 312, moisture absorption strip. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example

[0025] See also Figure 1-Figure 4 , a spring-adjustable flexible ball-head universal joint as shown in the figure comprises:

[0026] A rotating ball head 110 is provided at the bottom of the rotating rod 100, a ball head seat 120 is provided outside the rotating ball head 110, an upper push piece 131 is matched at the bottom of the rotating ball head 110, a sliding rod 133 is provided at the bottom of the upper push piece 131, an upper push spring 132 is provided outside the sliding rod 133, and a bottom rod 130 is provided at the bottom of the ball head seat 120;

[0027] The elastic ring 1 200 is provided with a magnetic ring 1 201 matched with the outer wall of the rotating rod 100 inside, the magnetic ring 1 201 and the elastic ring 2 230 are made of common plastic on the market, and a plurality of magnet pieces matched with the outer wall of the rotating rod 100 are embedded in the inner wall of the circumference thereof, a rubber piece 220 is provided at the bottom of the elastic ring 1 200, an outer ring 222 is provided at the bottom of the rubber piece 220, and an elastic ring 2 230 is provided at the bottom of the outer ring 222, the elastic ring 1 200 and the elastic ring 2 230 are made of elastic stainless steel strips commonly used on the market, a magnetic ring 2 231 is provided inside the elastic ring 230, a Velcro 1 210 is provided on the outer wall of the elastic ring 1 200, and a Velcro 2 223 is provided on the outer wall of the outer ring 222;

[0028] The side piece 300 is arranged on the outside of the rubber piece 220. The side wall of the side piece 300 is provided with a hole matched with the cavity 301. The bottom of the side piece 300 is provided with an outer ring 22. The side wall of the outer ring 222 is provided with an air hole matched with the plastic piece 310. At the same time, the outer wall of the rotating ball head 110 is provided with a round hole matched with the air hole. The plastic piece 310 is provided with a moisture absorption strip 312. The moisture absorption strip 312 is made of calcium chloride moisture absorbent commonly available on the market.

[0029] Specifically, the outer wall of the rubber member 220 is provided with a bonding sheet 221 , which is made of a plastic film and has glue coated on the rear side.

[0030] Furthermore, a cavity 301 is provided inside the side piece 300 .

[0031] Furthermore, a sealing cover 311 is disposed on the side wall of the plastic component 310 .

[0032] Furthermore, the outer ring 222 is matched with the outer wall of the ball seat 120 .

[0033] It is worth noting that the sliding rod 133 passes through the bottom of the ball head seat 120 .

[0034] It is worth noting that the upper ejector 131 is fitted into the interior of the ball seat 120 .

[0035] Working principle: After the elastic ring 200 is opened, the magnetic ring 201 is used to fix the outer wall of the rotating rod 100, and the outer ring 222 is matched with the outer wall of the ball head seat 120, and the elastic ring 230 and the magnetic ring 231 are also used to fix the outer ring 222 by magnetic attraction, and then the Velcro 1 210 and the Velcro 2 223 and the bonding sheet 221 are bonded, so that the rubber part 220 can be conveniently covered on the outside of the rotating ball head 110 and the ball head seat 120, so that the universal joint can be conveniently covered when the cover is damaged. The replacement increases the convenience of using the spring-adjustable flexible ball head universal joint; when the rubber member 220 covers the connection between the ball head seat 120 and the rotating ball head 110, the moisture absorption strip 312 inside the plastic member 310 can cooperate with the cavity 301 of the side member 300 to absorb moisture from the inside of the rubber member 220, thereby preventing the connection between the ball head seat 120 and the rotating ball head 110 from being damp, which may cause the rotating ball head 110 to rust during long-term operation of the universal joint. This is beneficial to the long-term and stable use of the universal joint and has a moisture-proof protection effect on the rotating ball head 110.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spring-adjustable flexible ball-head universal joint, characterized in that: include: A rotating rod (100), wherein a rotating ball head (110) is disposed at the bottom of the rotating rod (100), a ball head seat (120) is disposed outside the rotating ball head (110), an upper ejection piece (131) is matched at the bottom of the rotating ball head (110), a sliding rod (133) is disposed at the bottom of the upper ejection piece (131), an upper ejection spring (132) is disposed outside the sliding rod (133), and a bottom rod (130) is disposed at the bottom of the ball head seat (120); An elastic ring (200), wherein a magnetic ring (201) that matches the outer wall of the rotating rod (100) is arranged inside the elastic ring (200), a rubber piece (220) is arranged at the bottom of the elastic ring (200), an outer ring (222) is arranged at the bottom of the rubber piece (220), an elastic ring (230) is arranged at the bottom of the outer ring (222), a magnetic ring (231) is arranged inside the elastic ring (230), a Velcro (210) is arranged on the outer wall of the elastic ring (200), and a Velcro (223) is arranged on the outer wall of the outer ring (222); A side piece (300) is arranged outside the rubber piece (220), a plastic piece (310) is arranged at the bottom of the side piece (300), and a moisture absorption strip (312) is arranged inside the plastic piece (310).

2. A spring-adjustable flexible ball-head universal joint according to claim 1, characterized in that: The outer wall of the rubber piece (220) is provided with a fitting sheet (221).

3. The spring-adjustable flexible ball-head universal joint according to claim 1, characterized in that: A cavity (301) is provided inside the side piece (300).

4. The spring-adjustable flexible ball-head universal joint according to claim 1, characterized in that: A sealing cover (311) is provided on the side wall of the plastic part (310).

5. The spring-adjustable flexible ball-head universal joint according to claim 1, characterized in that: The outer ring (222) is matched with the outer wall of the ball head seat (120).

6. The spring-adjustable flexible ball-head universal joint according to claim 1, characterized in that: The sliding rod (133) is slidably matched with the bottom of the ball head seat (120).

7. The spring-adjustable flexible ball-head universal joint according to claim 1, characterized in that: The upper push piece (131) is fitted into the interior of the ball head seat (120).

Images