Elastic connecting mechanism and application

Abstract

The invention discloses an elastic connecting mechanism and application thereof.The elastic connecting mechanism is composed of a sleeve, a spring and a rod body, the spring and the rod body are assembled in an inner cavity of the sleeve, and integrated design is adopted; in one implementation mode, when the spring is in the stretching state, the base of the second rod body abuts against the base of the first rod body, and when the second preset structural part pulls the second rod body to move outwards, the base of the second rod body pushes the spring to contract; when the spring extends, the base of the second rod body rebounds and abuts against the base of the first rod body. Similarly, in another implementation mode, when the second preset structural member pulls the third rod body to move outwards, the base of the third rod body pushes the spring to contract, and when the spring extends, the base of the third rod body rebounds and abuts against the bottom of the cavity. The technical scheme provided by the invention is simple in structure, convenient to produce, assemble, replace and maintain, and suitable for various application scenes such as machinery, numerical control machining equipment, clamps, wearable terminal products and the like.

Description

Technical Field

[0001] The present invention relates to the field of connectors for transmitting rotation, and in particular to an elastic connection mechanism and its application. Background Art

[0002] In devices such as numerical control machining equipment and pneumatic fixtures, connectors for pulling and rotating are commonly used. Their main function is to connect both ends and provide telescopic and rotational movements. However, in production practice, the connectors are usually composed of multiple components, with complex structures, inconvenient production and assembly, high debugging difficulty, and high maintenance costs. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides an elastic connection mechanism, which adopts an integrated design, has a simple structure, and is convenient for production, assembly, replacement, and maintenance.

[0004] An elastic connection mechanism includes a sleeve, a spring, a first rod body, and a second rod body; a through cavity is provided in the sleeve, and steps are provided at the outlet ends of the cavity; both the first rod body and the second rod body include a base matching the diameter of the cavity, and a needle rod with a diameter smaller than the base and integrally connected to the base.

[0005] The base of the first rod body is placed in the cavity and abuts against one side step of the sleeve, and the needle rod of the first rod body extends out of the cavity and is used to connect a first preset structural member.

[0006] The spring is sleeved on the needle rod of the second rod body; the base of the second rod body is placed in the cavity, one end is arranged opposite to the base of the first rod body, and the spring is between the other end and the other side step of the sleeve; the needle rod of the second rod body extends out of the cavity and is used to connect a second preset structural member.

[0007] When the spring is in the extended state, the base of the second rod body abuts against the base of the first rod body; when the second rod body moves away from the first rod body, the base of the second rod body compresses the spring to the compressed state.

[0008] An elastic connection mechanism includes a sleeve, a spring, and a third rod body; a fixed rod is provided at one end of the sleeve, a cavity is provided in the other end of the sleeve, and a step is provided at the outlet of the cavity; the third rod body includes a base matching the diameter of the cavity, and a needle rod with a diameter smaller than the base and integrally connected to the base.

[0009] The fixed rod of the sleeve is used to connect a first preset structural member.

[0010] The spring is sleeved on the needle rod of the third rod body; the base of the third rod body is placed in the cavity, one end of which is oppositely arranged with the bottom of the cavity, and the spring is arranged between the other end and the step of the sleeve; the needle rod of the third rod body extends outside the cavity and is used to connect the second preset structural member;

[0011] When the spring is in the extended state, the base of the third rod body abuts against the bottom of the cavity; when the third rod body moves in the direction away from the bottom of the cavity, the base of the third rod body compresses the spring to the compressed state.

[0012] A device based on an elastic connection mechanism includes the above elastic connection mechanism, a first preset structural member and a second preset structural member; wherein, the first preset structural member and the second preset structural member are respectively connected to the needle rod of the first rod body and the needle rod of the second rod body; alternatively, the first preset structural member and the second preset structural member are respectively connected to the fixed rod of the sleeve and the needle rod of the third rod body.

[0013] The working principle of the elastic connection mechanism and the device applying the mechanism provided by the present invention is as follows: in one implementation, when the spring is in the extended state, the base of the second rod body abuts against the base of the first rod body. When the second preset structural member pulls the second rod body to move outwards, the base of the second rod body pushes the spring to contract; when the spring extends, the base of the second rod body rebounds and abuts against the base of the first rod body. Similarly, in another implementation, when the second preset structural member pulls the third rod body to move outwards, the base of the third rod body pushes the spring to contract, and when the spring extends, the base of the third rod body rebounds and abuts against the bottom of the cavity.

[0014] Compared with the prior art, the elastic connection mechanism of the present invention is composed of a sleeve, a spring and a rod body, and adopts an integrated design, with a simple structure, which is convenient for production, assembly, replacement and maintenance, and is beneficial to cost reduction. At the same time, it can be made into kits of different sizes according to actual needs, and is applicable to various application scenarios such as machinery, numerical control processing equipment, fixtures, wearable terminal products, etc. Description of the Drawings

[0015] Figure 1 It is a perspective view of the elastic connection mechanism in Embodiment 1;

[0016] Figure 2 It is an exploded view of the elastic connection mechanism in Embodiment 1;

[0017] Figure 3 It is a sectional view of the elastic connection mechanism in Embodiment 1;

[0018] Figure 4 It is another sectional view of the elastic connection mechanism in Embodiment 1;

[0019] Figure 5 Stereogram of the elastic connection mechanism in Embodiment 2;

[0020] Figure 6 Exploded view of the elastic connection mechanism in Embodiment 2;

[0021] Figure 7 Cross-sectional view of the elastic connection mechanism in Embodiment 2;

[0022] Figure 8 Stereogram of the watchband unit based on the elastic connection mechanism;

[0023] Figure 9 Exploded view of the watchband unit based on the elastic connection mechanism;

[0024] Figure 10 Cross-sectional view of the watchband unit based on the elastic connection mechanism;

[0025] The markings in the attached drawings of the specification are as follows:

[0026] 100, elastic connection mechanism; 1, sleeve; 11, cavity; 12, step; 13, fixing rod; 2, spring; 31, first rod body; 32, second rod body; 33, third rod body; 34, base; 35, needle rod; 4, positioning shaft; 5, first connection block; 51, through groove; 6, second connection block; 7, third connection block. Detailed implementation manners

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Provide an elastic connection mechanism, as Figures 1 to 7 shown, including two implementation manners. Specifically, in Embodiment 1, the elastic connection mechanism 100 includes a sleeve 1, a spring 2, a first rod body 31 and a second rod body 32; a through cavity 11 is provided inside the sleeve, and steps 12 are provided at the outlet ends of the cavity; both the first rod body and the second rod body include a base 34 matching the diameter of the cavity, and a needle rod 35 with a diameter smaller than the base and integrally connected to the base;

[0029] The base of the first rod body is placed inside the cavity and abuts against the step on one side of the sleeve, and the needle rod of the first rod body extends outside the cavity and is used to connect the first preset structural member;

[0030] The spring is sleeved on the needle rod of the second rod body; the base of the second rod body is placed in the cavity, one end of which is arranged opposite to the base of the first rod body, and the spring is between the other end and the other step of the sleeve; the needle rod of the second rod body extends out of the cavity and is used to connect the second preset structural member.

[0031] Wherein, the first preset structural member and the second preset structural member are arranged at both ends to be connected by the elastic connection mechanism of the present invention. When the spring is in the extended state, the base of the second rod body abuts against the base of the first rod body; when the second rod body moves in the direction away from the first rod body, the base of the second rod body compresses the spring to the compressed state.

[0032] In Embodiment 2, the elastic connection mechanism 100 includes a sleeve 1, a spring 2 and a third rod body 33; a fixing rod 13 is arranged at one end of the sleeve, a cavity 11 is arranged inside the other end of the sleeve, and a step 12 is arranged at the outlet of the cavity; the third rod body includes a base 34 matching the diameter of the cavity and a needle rod 35 with a diameter smaller than the base and integrally connected to the base;

[0033] The fixing rod of the sleeve is used to connect the first preset structural member;

[0034] The spring is sleeved on the needle rod of the third rod body; the base of the third rod body is placed in the cavity, one end of which is arranged opposite to the bottom of the cavity, and the spring is between the other end and the step of the sleeve; the needle rod of the third rod body extends out of the cavity and is used to connect the second preset structural member.

[0035] Wherein, the first preset structural member and the second preset structural member are arranged at both ends to be connected by the elastic connection mechanism of the present invention. When the spring is in the extended state, the base of the third rod body abuts against the bottom of the cavity; when the third rod body moves in the direction away from the bottom of the cavity, the base of the third rod body compresses the spring to the compressed state. The sleeve and its fixing rod adopt an integrated design to replace the sleeve and the first rod body in Embodiment 1, so it has the effect of simpler and more firm structure.

[0036] Further, for the above embodiment, the step 12 is formed by processes such as necking, riveting, Interference fit snap fastening parts or loose parts welding bayonet fastener process, but not limited thereto. In one implementation, the step is in a circular ring shape, and the diameter of the middle hole of the circular ring shape matches the diameter of the needle rod to facilitate the extension of the needle rod.

[0037] Further, the ends of the needle rod of the first rod body, the needle rod of the second rod body, the needle rod of the third rod body and the needle rod of the fixing rod can be any one of knurled needles, pineapple teeth needles, screws, and connecting grooves to connect with the first preset structural member and the second preset structural member.

[0038] Further, the cavity of the sleeve is cylindrical; the bases of the first rod body, the second rod body, and the third rod body are all matched with the shape of the cavity, but the shape of the sleeve cavity is not limited to this.

[0039] Provide a device based on an elastic connection mechanism, including an elastic connection mechanism 100, a first preset structural member, and a second preset structural member; wherein, the first preset structural member and the second preset structural member are respectively connected to the needle rods of the first rod body and the second rod body; or, the first preset structural member and the second preset structural member are respectively connected to the fixing rod of the sleeve and the needle rod of the third rod body.

[0040] In one implementation, as Figures 8 to 10 shown, the device based on the elastic connection mechanism is a watchband unit, and the watchband unit includes a first connection block, and second connection blocks and third connection blocks arranged on both sides of the first connection block; wherein, the first preset structural member and the second preset structural member are respectively equivalent to the second connection block and the third connection block; the elastic connection device is installed on the first connection block, and connects the second connection block and the third connection block through the first rod body and the second rod body, or the third rod body and the fixing rod.

[0041] Specifically, a plurality of watchband units are connected to form a watchband, and each watchband unit includes a positioning shaft 4, an elastic connection mechanism 100, a first connection block 5, and second connection blocks 6 and third connection blocks 7 respectively assembled on both sides of the first connection block; wherein:

[0042] Two through slots 51 are arranged in parallel in the first connection block: a first through slot and a second through slot; after the positioning shaft passes through the first through slot, one end of it is fixedly connected or movably connected to the second connection block in the adjacent watchband unit, and the other end is movably connected to the third connection block in the adjacent watchband unit; the movable connection means that one end of the positioning shaft can be separated from the third connection block. For example, a shaft hole is provided on the third connection block, and one end of the positioning shaft is inserted into the shaft hole to form a movable connection.

[0043] Specifically, when the number of first connection blocks is one, one end of the positioning shaft is fixedly connected to the second connection block, and the other end is movably connected to the third connection block; when the number of first connection blocks is multiple, for the convenience of disassembly and assembly, both ends of the positioning shaft are movably connected to the second connection block and the third connection block respectively.

[0044] After the elastic connection mechanism passes through the second through slot, its two ends are respectively fixedly connected to the second connection block and the third connection block in the current watchband unit.

[0045] In use, for the elastic connection mechanism in Embodiment 1, in the spring extension state, the base of the second rod body abuts against the base of the first rod body. When the third connection block is pulled up, the base of the second rod body moves towards the third connection block and pushes the spring to contract. At the same time, the third connection block moves away from the first connection block, causing the movable connection end of the positioning shaft to disengage from the third connection block. At this time, by rotating the third connection block along the axial direction of the pulling and shrinking rod, disassembly can be achieved. Similarly, for the elastic connection mechanism in Embodiment 2, when the third connection block is pulled up, the base of the third rod body moves towards the third connection block and pushes the spring to contract, and the disengagement of the positioning shaft from the third connection block can be completed.

[0046] In the strap unit based on the elastic connection mechanism, the elastic connection mechanism not only enables the strap unit to be disassembled and assembled by hand, but also has a simpler structure, facilitating production and assembly.

[0047] The above is an elaboration of the elastic connection mechanism of the present invention to help understand the present invention. However, the implementation mode of the present invention is not limited by the above embodiments. Any changes, modifications, substitutions, combinations, and simplifications made without departing from the principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. An elastic connection mechanism, characterized in that, It includes a sleeve, a spring, a first rod body and a second rod body; a through cavity is provided in the sleeve, and steps are provided at the outlets at both ends of the cavity; both the first rod body and the second rod body include a base matching the diameter of the cavity and a needle rod with a diameter smaller than the base and integrally connected to the base. The base of the first rod body is placed in the cavity and abuts against one side step of the sleeve, and the needle rod of the first rod body extends out of the cavity and is used to connect a first preset structural member. The spring is sleeved on the needle rod of the second rod body; the base of the second rod body is placed in the cavity, one end of which is oppositely arranged with the base of the first rod body, and the spring is between the other end and the other side step of the sleeve; the needle rod of the second rod body extends out of the cavity and is used to connect a second preset structural member. When the spring is in the extended state, the base of the second rod body abuts against the base of the first rod body; when the second rod body moves in a direction away from the first rod body, the base of the second rod body compresses the spring to the compressed state.

2. An elastic connection mechanism, characterized in that, It includes a sleeve, a spring and a third rod body; a fixing rod is provided at one end of the sleeve, a cavity is provided in the other end of the sleeve, and a step is provided at the outlet of the cavity; the third rod body includes a base matching the diameter of the cavity and a needle rod with a diameter smaller than the base and integrally connected to the base. The fixing rod of the sleeve is used to connect a first preset structural member. The spring is sleeved on the needle rod of the third rod body; the base of the third rod body is placed in the cavity, one end of which is oppositely arranged with the bottom of the cavity, and the spring is between the other end and the step of the sleeve; the needle rod of the third rod body extends out of the cavity and is used to connect a second preset structural member. When the spring is in the extended state, the base of the third rod body abuts against the bottom of the cavity; when the third rod body moves in a direction away from the bottom of the cavity, the base of the third rod body compresses the spring to the compressed state.

3. The elastic connection mechanism according to claim 1 or 2, characterized in that, The said step consists of a necking, a riveting opening, Interference fit Press-fit and tighten the bayonet fastening and is formed by the process of welding snap fasteners for parts or loose parts.

4. The elastic connection mechanism according to claim 1 or 2, characterized in that, The step is in a circular ring shape, and the diameter of the middle hole of the circular ring shape matches the diameter of the needle rod.

5. The elastic connection mechanism according to claim 1 or 2, characterized in that, The end of the needle rod of the first rod body, the needle rod of the second rod body and the needle rod of the third rod body is any one of a knurled needle, a pineapple needle, a screw and a connecting groove.

6. The elastic connection mechanism according to claim 1 or 2, characterized in that, The cavity of the sleeve is in a cylindrical shape; the bases of the first rod body, the second rod body and the third rod body all match the shape of the cavity.

7. A device based on an elastic connection mechanism, characterized in that, It includes the elastic connection mechanism according to any one of claims 1 to 6, a first preset structural member and a second preset structural member; wherein, the first preset structural member and the second preset structural member are respectively connected to the needle rod of the first rod body and the needle rod of the second rod body; or, the first preset structural member and the second preset structural member are respectively connected to the fixing rod of the sleeve and the needle rod of the third rod body.

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