Sleeve device for connecting SDS handle

Abstract

The utility model discloses a SDS handle part connecting sleeve device, which comprises an inner pipe, an outer pipe and a spring, the inner pipe comprises a first section and a second section, a first protruding part is arranged at the joint of the first section and the second section, the cross section of the first section is circular, the first section comprises a limiting section and a protruding section, and the limiting section is connected with the protruding section. The spring is arranged on the limiting section in a sleeving mode, the limiting section is provided with four evenly-distributed holes, the holes are symmetrical in a pairwise mode, rotatable steel balls are installed in the holes, a limiting protruding ring extending inwards is arranged at an opening in one end of the outer pipe, a circle of second protruding part is arranged on the inner surface of the middle of the outer pipe, and the second protruding part is arranged on the inner surface of the middle of the outer pipe. The outer pipe is arranged on the inner pipe in a penetrating mode. The SDS handle is simple in structure and convenient to use, the cross section of the inner pipe is circular, and the four steel balls are symmetrically arranged, so that the SDS handle can be stably connected.

Description

Technical Field

[0001] The utility model relates to the technical field of sleeves, in particular to a sleeve device for connecting an SDS shank. Background Art

[0002] A sleeve refers to a socket wrench for short. Since it is sleeved on various wrenches and is in the shape of a cylinder, it is commonly called a sleeve by everyone and is a commonly used production, maintenance, and daily tool. A keychain with a screwdriver bit sleeve is disclosed in Patent CN220384426U, which is convenient to carry and use. However, the sleeve in this patent is only applicable to hexagonal tools and is not applicable to SDS tools with a round shank. Content of the Utility Model

[0003] The purpose of the utility model is to provide a sleeve device for connecting an SDS shank to solve the problems mentioned in the above background art.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] A sleeve device for connecting an SDS shank includes an inner tube, an outer tube, and a spring. The inner tube includes a first section and a second section. A first protrusion is provided at the connection between the first section and the second section. The cross-section of the first section is circular. The first section includes a limiting section and a protruding section. The spring is sleeved on the limiting section. The limiting section is provided with four evenly distributed holes that are symmetric in pairs. Rotatable steel balls are installed in the holes. A limiting convex ring extending inward is provided at the open end of one end of the outer tube. A second protrusion is provided on the inner surface in the middle of the outer tube. The outer tube is sleeved on the inner tube.

[0006] Further, a snap ring groove is provided at one end of the protruding section away from the second section, and a snap ring is placed in the snap ring groove.

[0007] Further, a snap ring limiting groove is provided on the limiting convex ring, and the diameter of the snap ring limiting groove is smaller than the diameter of the snap ring.

[0008] Further, the diameter of the limiting convex ring is smaller than the diameter of the limiting section.

[0009] Further, the diameter of the second protrusion is smaller than the diameter of the spring.

[0010] Further, the diameter of the first protrusion is larger than the diameter of the spring.

[0011] Further, a through hole is provided in the second section.

[0012] Further, the through hole is used to connect a key ring.

[0013] Furthermore, a plurality of third protrusions are provided on the outer surface of one end of the outer tube close to the second section.

[0014] Beneficial effects:

[0015] The SDS handle sleeve device connected in the present application has a simple structure and is easy to use, wherein the cross-section of the inner tube is circular and four steel balls are symmetrically arranged, thereby being able to firmly connect the SDS handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the inner tube of the utility model;

[0018] Figure 3 It is a cross-sectional view of the inner tube in the utility model;

[0019] Figure 4 It is a structural schematic diagram of the outer tube of the utility model.

[0020] Among them: 1. outer tube; 2. inner tube; 3. limit section; 31. hole; 4. protruding section; 5. retaining ring groove; 6. spring; 7. second section; 71. through hole; 8. key ring; 9. steel ball; 10. retaining ring limit groove; 11. second protrusion; 12. third protrusion; 13. first protrusion. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Example

[0023] A sleeve device for connecting an SDS handle, such as Figures 1 to 4 As shown, it includes an inner tube 2, an outer tube 1 and a spring 6, the inner tube 2 includes a first section and a second section 7, and a first protrusion 13 is arranged between the first section and the second section 7, the cross section of the first section is circular, the first section includes a limiting section 3 and a protruding section 4, the spring 6 is sleeved on the limiting section 3, the limiting section 3 is provided with four evenly distributed holes 31, and the holes 31 are symmetrical in pairs, and rotatable steel balls 9 are installed in the holes 31, and a limiting convex ring extending inward is arranged at the opening of one end of the outer tube 1, and the diameter of the limiting convex ring is smaller than the diameter of the limiting section 3, a circle of second protrusions 11 is arranged on the middle inner surface of the outer tube 1, the diameter of the second protrusion 11 is smaller than the diameter of the spring 6, and the diameter of the first protrusion 13 is larger than the diameter of the spring 6, and the outer tube 1 is penetrated on the inner tube 2.

[0024] Specifically, the sleeve device in this embodiment is applicable to the tool connection of the SDS type. It is composed of an outer tube 1 sleeved outside an inner tube 2. Since the cross-section of the shank of the SDS tool is circular and is provided with two grooves and two long holes, the cross-section of the inner tube 2 is circular and adapted to the shank of the SDS, and 4 steel balls 9 are arranged inside the inner tube 2 so that the steel balls 9 correspond to the grooves and holes of the shank of the SDS, thereby limiting and fixing the shank of the SDS. A spring 6 is further arranged outside the inner tube 2 and inside the outer tube 1. One end of the spring 6 contacts a first convex portion 13, and the other end contacts a second convex portion 11. When the second section 7 is pushed, the protruding section 4 can protrude from the opening of the outer tube 1. At this time, the spring 6 is compressed. When the second section 7 is no longer pushed, the outer tube 1 will return to its original position by the elastic force of the spring 6.

[0025] Preferably, a snap ring groove 5 is arranged at one end of the protruding section 4 away from the second section 7. A snap ring is placed in the snap ring groove 5, and a snap ring limiting groove 10 is arranged on the limiting convex ring. The diameter of the snap ring limiting groove 10 is smaller than the diameter of the snap ring. The snap ring is stuck in the snap ring groove 5 and its diameter is larger than the diameter of the snap ring limiting groove 10. When the protruding section 4 is placed inside the outer tube 1, the snap ring can be stuck in the snap ring limiting groove 10, so that when the inner tube 2 moves backward due to the spring 6, the end of the protruding section 4 is limited at the pipe orifice of the outer tube 1, preventing the inner tube 2 from slipping out of the inside of the outer tube 1. When the protruding section 4 protrudes outside the outer tube 1, the snap ring is exposed outside, and the staff can disassemble the outer tube 1 and the inner tube 2 by removing the snap ring, which is convenient for inspection and repair.

[0026] Preferably, the second section 7 is provided with a through hole 71 for connecting a key ring 8. The key ring 8 facilitates the user to carry and use it.

[0027] Preferably, a plurality of third convex portions 12 are arranged on the outer surface of one end of the outer tube 1 close to the second section 7, and grooves are arranged between the third convex portions. Through the third convex portions 12 and the grooves, the friction force of the outer tube 1 is increased, which is convenient for the user to work and avoids affecting the work due to the outer tube 1 being too slippery.

[0028] Although the embodiments of the present invention are described in the specification, these embodiments are only for reference and should not limit the protection scope of the present invention. All omissions, substitutions and changes made within the scope not departing from the gist of the present invention should be included in the protection scope of the present invention.

Claims

1. A connecting SDS shank sleeve device, characterized in that: It includes an inner tube, an outer tube and a spring. The inner tube includes a first section and a second section. A first convex portion is provided at the connection of the first section and the second section. The cross-section of the first section is circular. The first section includes a limiting section and a protruding section. The spring is sleeved on the limiting section. The limiting section is provided with four evenly distributed holes and the holes are symmetric in pairs. Rotatable steel balls are installed in the holes. A limiting convex ring extending inward is provided at the open end of one end of the outer tube. A circle of second convex portions is provided on the inner surface in the middle of the outer tube. The outer tube is sleeved on the inner tube.

2. The connecting SDS shank sleeve device according to claim 1, wherein: A snap ring groove is provided at the end of the protruding section away from the second section, and a snap ring is placed in the snap ring groove.

3. The connecting SDS shank sleeve device according to claim 2, wherein: A snap ring limiting groove is provided on the limiting convex ring, and the diameter of the snap ring limiting groove is smaller than the diameter of the snap ring.

4. The connecting SDS shank sleeve device according to claim 1, characterized in that: The diameter of the limiting convex ring is smaller than the diameter of the limiting section.

5. The connecting SDS shank sleeve device according to claim 1, characterized in that: The diameter of the second convex portion is smaller than the diameter of the spring.

6. The connecting SDS shank sleeve device according to claim 1, characterized in that: The diameter of the first convex portion is larger than the diameter of the spring.

7. The connecting SDS shank sleeve device according to claim 1, characterized in that: The second section is provided with a through hole.

8. The connecting SDS shank sleeve device according to claim 7, wherein: The through hole is used to connect a key ring.

9. The connecting SDS handle sleeve device according to claim 1, wherein: A plurality of third convex portions are provided on the outer surface of the end of the outer tube close to the second section.

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