An elongated linear bearing

Abstract

The application relates to the technical field of linear bearing, in particular to a lengthened linear bearing which comprises a sleeve ring, two protection frames, a first blocking assembly and a second blocking assembly, the sleeve ring is provided with a through hole; one end of the sleeve ring is provided with a first annular groove and a curled edge; the two protection frames are arranged in the through hole; the first blocking assembly is arranged at one end of the sleeve ring, the first blocking assembly is arranged in the first annular groove, and the two ends of the first blocking assembly abut against one protection frame and the curled edge respectively; the second blocking assembly is arranged at the other end of the sleeve ring, the second blocking assembly is threadedly connected with the sleeve ring, and when the second blocking assembly is threadedly connected with the sleeve ring, the second blocking assembly abuts against one protection frame, the lengthened linear bearing has the advantages that when the protection frame needs to be replaced, the second blocking assembly can be screwed down, and the replacement cost is low.

Description

Technical Field

[0001] This application relates to the field of linear bearing technology, and more specifically to an extended linear bearing. Background Technology

[0002] A linear bearing is a precision mechanical component used to guide and support components to move smoothly along a straight path, achieving linear motion. It is usually used in conjunction with a cylindrical shaft.

[0003] Patent document (CN204985334U) discloses an extended linear bearing, including a race, two protective frames, and two blocking assemblies. The race has a through hole, two annular grooves, and two rolled edges. Both protective frames are placed within the through hole, and each annular groove contains one blocking assembly, with both ends of the blocking assembly abutting against the corresponding protective frame and rolled edge. It should be noted that after the protective frame and blocking assembly are inserted, a rolling machine forms rolled edges at both ends of the race, preventing the protective frame from detaching. However, when the steel balls inside the protective frame wear down, due to the rolled edges, it is difficult to replace the protective frame without damaging the rolled edges, resulting in low replacement costs.

[0004] Therefore, there is a need for an extended linear bearing with lower replacement costs. Summary of the Invention

[0005] The main objective of this application is to provide an extended linear bearing, wherein the extended linear bearing includes a race, two protective frames, a first blocking assembly, and a second blocking assembly. The race has a through hole; one end of the race has a first annular groove and a rolled edge; both protective frames are placed in the through hole; the first blocking assembly is located at one end of the race, is disposed in the first annular groove, and its two ends abut against one of the protective frames and the rolled edge, respectively; the second blocking assembly is located at the other end of the race, and is threadedly connected to the race. When the second blocking assembly is threadedly connected to the race, it abuts against one of the protective frames. Because the second blocking assembly is threadedly connected to the race, it can be unscrewed when the protective frames need to be replaced, which has the advantage of lower replacement costs compared to the prior art.

[0006] To achieve at least one of the above-mentioned objectives, this application provides an extended linear bearing, wherein the extended linear bearing comprises: A collar, the collar having a through hole; one end of the collar having a first annular groove and a rolled edge; Two protective frames, both of which are placed in the through hole; The first blocking component is located at one end of the collar, the first blocking component is disposed in the first annular groove, and the two ends of the first blocking component abut against a protective frame and the rolled edge, respectively. A second blocking assembly is located at the other end of the collar, the second blocking assembly is threadedly connected to the collar, and when the second blocking assembly is threadedly connected to the collar, the second blocking assembly abuts against a protective frame.

[0007] In one or more embodiments of this application, the first blocking component includes a first washer and a first pressure ring. The first pressure ring has a first outer ring groove and a first extension end at its two ends, respectively. The first washer is sleeved on the first extension end. The rolled edge extends into the first outer ring groove and abuts against the bottom wall of the first outer ring groove. The end of the first washer facing away from the first pressure ring abuts against the protective frame.

[0008] In one or more embodiments of this application, the second blocking assembly includes a second washer, a second pressure ring, and a screw sleeve. The screw sleeve has a stepped hole. The two ends of the second pressure ring have a second outer ring groove and a second extended end, respectively. The second washer is sleeved on the second extended end. The second outer ring groove abuts against the step of the stepped hole. The end of the sleeve away from the rolled edge has a threaded portion. The end of the stepped hole with a larger diameter is threadedly connected to the threaded portion. The two ends of the second washer abut against the second pressure ring and a protective frame, respectively.

[0009] In one or more embodiments of this application, the through hole has a plurality of diameter reduction groups, the diameter reduction groups are arranged in a ring array around the collar, each of the diameter reduction groups includes two diameter reduction portions arranged at intervals, and each of the diameter reduction portions has a transition tapered surface between its two sides and the hole wall of the through hole.

[0010] In one or more embodiments of this application, each of the protective frames includes a bottom-draining channel, with the reduced diameter portion directly opposite the bottom-draining channel.

[0011] In one or more embodiments of this application, each of the protective frames further includes a bottom sealing channel, which is connected to the bottom leakage channel and forms a closed loop, and steel balls can be rolled in both the bottom sealing channel and the bottom leakage channel.

[0012] In one or more embodiments of this application, the end of the ferrule near the rolled edge has a mounting groove.

[0013] In this embodiment, the extended linear bearing includes a race, two protective frames, a first blocking assembly, and a second blocking assembly. The race has a through hole; one end of the race has a first annular groove and a rolled edge; both protective frames are placed in the through hole; the first blocking assembly is located at one end of the race, is disposed in the first annular groove, and its two ends abut against a protective frame and the rolled edge, respectively; the second blocking assembly is located at the other end of the race, and is threadedly connected to the race. When the second blocking assembly is threadedly connected to the race, it abuts against a protective frame. By connecting the second blocking assembly to the race, the second blocking assembly can be unscrewed when the protective frame needs to be replaced. Compared with the prior art, this design has the advantage of lower replacement cost. Attached Figure Description

[0014] These and / or other aspects and advantages of this application will become clearer and more readily understood from the following detailed description of embodiments of this application taken in conjunction with the accompanying drawings, wherein: Figure 1 The figure shows a structural schematic diagram of an extended linear bearing of this application at a certain angle; Figure 2 The figure shows a structural schematic diagram of an extended linear bearing of this application from another angle; Figure 3 The diagram shows... Figure 1 A magnified view of a portion at point C; Figure 4 The diagram shows... Figure 1 A magnified view of a portion at point D. Detailed Implementation

[0015] The terms and words used in the following specification and claims are not limited to their literal meaning, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined in the appended claims and their equivalents.

[0016] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0017] While ordinal numbers such as "first," "second," etc., will be used to describe various components, there is no limitation on which components are used herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0018] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0019] An example of an extended linear bearing, for reference. Figures 1 to 4 An extended linear bearing according to a preferred embodiment of the present invention includes a raceway 10, two protective frames 20, a first blocking component 30, and a second blocking component 40.

[0020] Specifically, such as Figure 1 As shown, the collar 10 has a through hole 101; one end of the collar 10 has a first annular groove 102 and a rolled edge 103; in addition, both of the protective frames 20 are placed in the through hole 101; furthermore, as Figure 3 As shown, the first blocking component 30 is located at one end of the collar 10, the first blocking component 30 is disposed in the first annular groove 102, and the two ends of the first blocking component 30 abut against a protective frame 20 and the rolled edge 103 respectively; in addition, the second blocking component 40 is located at the other end of the collar 10, the second blocking component 40 is threadedly connected to the collar 10, and when the second blocking component 40 is threadedly connected to the collar 10, the second blocking component 40 abuts against a protective frame 20.

[0021] It should be noted that by providing the rolled edge 103 at one end of the collar 10, the assembler can insert or remove the two protective frames 20 from the other end of the through hole 101. It should also be pointed out that after inserting the two protective frames 20, the second blocking assembly 40 can be tightened to limit the end of the protective frame 20 away from the rolled edge 103. When the steel balls on one or both protective frames 20 wear out, the second blocking assembly 40 can be unscrewed, and the worn protective frame 20 can be replaced. It is evident that, compared to the prior art, this application has the advantage of lower replacement costs.

[0022] Furthermore, to specifically implement the first blocking component 30, such as Figure 3 As shown, the first blocking assembly 30 includes a first washer 301 and a first pressure ring 302. The first pressure ring 302 has a first outer ring groove 3021 and a first extension end 3022 at its two ends. The first washer 301 is sleeved on the first extension end 3022. The rolled edge 103 extends into the first outer ring groove 3021 and abuts against the bottom wall of the first outer ring groove 3021. The end of the first washer 301 facing away from the first pressure ring 302 abuts against the protective frame 20.

[0023] Similarly, to specifically implement the second blocking component 40, such as Figure 4 As shown, the second blocking assembly 40 includes a second washer 401, a second pressure ring 402, and a screwing bar 403. The screwing bar 403 has a stepped hole 4031. The two ends of the second pressure ring 402 have a second outer ring groove 4021 and a second extension end 4022, respectively. The second washer 401 is sleeved on the second extension end 4022. The second outer ring groove 4021 abuts against the step of the stepped hole 4031. The end of the collar 10 away from the rolled edge 103 has a threaded portion. The end of the stepped hole 4031 with a larger diameter is threadedly connected to the threaded portion. The two ends of the second washer 401 abut against the second pressure ring 402 and a protective frame 20, respectively.

[0024] Furthermore, in this application, as Figure 1 and Figure 2 As shown, each of the protective frames 20 includes a bottom-draining channel 201.

[0025] In addition, such as Figure 1 and Figure 2 As shown, each of the protective frames 20 also includes a bottom sealing channel 202, which is connected to the bottom leakage channel 201 and forms a closed loop. That is, the bottom sealing channel 202 and the bottom leakage channel 201 together form a closed ring structure. Steel balls 50 can be rolled inside both the bottom sealing channel 202 and the bottom leakage channel 201.

[0026] It should be noted that during use, the shaft passing through the through hole 101 rolls and rubs against the steel ball 50 in the bottom drain channel 201, causing the steel ball 50 to move back and forth in the bottom drain channel 201 and the bottom sealing channel 202.

[0027] Furthermore, to guide the steel ball 50 at the bottom channel 201, such as... Figure 1As shown, the through hole 101 has a plurality of diameter reduction groups, which are arranged in a ring array around the collar 10. Each diameter reduction group includes two diameter reduction portions 104 arranged at intervals, and each diameter reduction portion 104 has a transition conical surface 1041 between its two sides and the hole wall of the through hole 101. The diameter reduction portion 104 is directly opposite the bottom leakage channel 201.

[0028] In addition, to provide installation conditions for the extended linear bearing and external mounting, the end of the collar 10 near the rolled edge 103 has a mounting groove 105. It should be noted that a connecting flange can be fitted into the mounting groove 105, and the extended linear bearing can be connected to the external sliding component through the connecting flange.

[0029] In summary, the extended linear bearing described in the embodiments of this application is explained, which provides advantages such as lower replacement costs for the extended linear bearing.

[0030] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The function and structural principle of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from these principles.

Claims

1. An extended linear bearing, characterized in that: The extended linear bearing includes A collar, the collar having a through hole; one end of the collar having a first annular groove and a rolled edge; Two protective frames, both of which are placed in the through hole; The first blocking component is located at one end of the collar, the first blocking component is disposed in the first annular groove, and the two ends of the first blocking component abut against a protective frame and the rolled edge, respectively. A second blocking assembly is located at the other end of the collar, the second blocking assembly is threadedly connected to the collar, and when the second blocking assembly is threadedly connected to the collar, the second blocking assembly abuts against a protective frame.

2. The extended linear bearing according to claim 1, characterized in that: The first blocking assembly includes a first washer and a first pressure ring. The first pressure ring has a first outer ring groove and a first extension end at its two ends. The first washer is sleeved on the first extension end. The rolled edge extends into the first outer ring groove and abuts against the bottom wall of the first outer ring groove. The end of the first washer facing away from the first pressure ring abuts against the protective frame.

3. The extended linear bearing according to claim 2, characterized in that: The second blocking assembly includes a second washer, a second pressure ring, and a screw sleeve. The screw sleeve has a stepped hole. The two ends of the second pressure ring have a second outer ring groove and a second extended end, respectively. The second washer is sleeved on the second extended end. The second outer ring groove abuts against the step of the stepped hole. The end of the sleeve away from the rolled edge has a threaded portion. The end of the stepped hole with the larger diameter is threadedly connected to the threaded portion. The two ends of the second washer abut against the second pressure ring and a protective frame, respectively.

4. The extended linear bearing according to claim 3, characterized in that: The through hole has several diameter reduction groups, which are arranged in a ring array around the collar. Each diameter reduction group includes two diameter reduction portions arranged at intervals, and each diameter reduction portion has a transition conical surface between its two sides and the hole wall of the through hole.

5. The extended linear bearing according to claim 4, characterized in that: Each of the protective frames includes a bottom-draining channel, with the reduced diameter portion directly opposite the bottom-draining channel.

6. The extended linear bearing according to claim 5, characterized in that: Each of the protective frames also includes a bottom sealing channel, which is connected to the bottom leakage channel and forms a closed loop. Steel balls can be rolled inside both the bottom sealing channel and the bottom leakage channel.

7. The extended linear bearing according to claim 6, characterized in that: The end of the collar near the rolled edge has a mounting groove.

Images