Adjustable T-shaped bolt
By designing adjustable T-bolts, the combination of spring and nylon locking strips is used to realize automatic adjustment and locking of the bolt head, solving the problem of small application range and looseness and fallout caused by the fixation of the length of traditional T-bolts.
Patent Information
- Application Number
- CN202421536241.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-07-01
AI Technical Summary
The bolt head length of traditional T-bolts is fixed, and cannot adapt to T-shaped grooves of different sizes. It is easy to loosen and fall off in larger grooves, and has a small scope of application.
An adjustable T-bolt is designed, including a bolt head, main screw, movable bar, spring, nylon locking bar and locking block. The compression of the spring makes the bolt head automatically adjust the length after installation, and lock the length through the nylon locking bar and locking block to ensure stability.
After installation, the T-bolt is automatically adjusted and the length is locked, adapting to T-shaped grooves of different sizes to avoid loosening and falling off, and expanding the scope of application.
Smart Images
Figure CN222633614U_ABST
Abstract
Description
[Technical field]
[0001] The utility model relates to the technical field of fasteners, in particular to the technical field of T-bolts. [Background technology]
[0002] T-bolts are usually used to cooperate with T-slots on aluminum profiles to fix parts. Existing T-bolts are usually composed of a bolt head and a screw. The length of the bolt head is fixed. The sizes of T-slots on aluminum profiles of different sizes are also different. The size of the T-slot will increase with the aluminum profile. The length of the bolt head of the traditional T-bolt cannot be adjusted. It is easy to loosen and fall off when placed in a larger T-slot, which makes the application range of the T-bolt small and inconvenient for people to use.
[0003] The existing patent CN220816222U discloses a T-bolt assembly, whose bolt head is adjustable in length. However, the length of the adjustable bolt head needs to be adjusted before the bolt is installed, and the adjusted length is difficult to grasp. [Contents of the utility model]
[0004] The purpose of the utility model is to solve the problems in the prior art and to propose an adjustable T-bolt, which can automatically adjust the length of the bolt head after the T-bolt is installed in the T-slot and can be locked after adjustment. The adjustment is relatively convenient and the adjusted length can well adapt to the T-slot.
[0005] To achieve the above-mentioned purpose, the utility model proposes an adjustable T-bolt, including a bolt head, a main screw, a movable strip, a spring, a nylon locking strip, and a locking block. The bolt head is in the shape of an elongated strip, and a main screw is provided at the bottom center of the bolt head. The bolt head and the main screw are an integrated structure. An elongated mounting hole is provided inside the bolt head, and the length direction of the mounting hole is parallel to the length direction of the bolt head. The mounting hole runs through both ends of the bolt head, and the mounting hole is a rectangular hole. Both ends of the mounting hole are plugged with movable strips, and the movable strips are adapted to the mounting holes. A spring that is always in a compressed state is connected between the movable strips, and the length direction of the spring is parallel to the length direction of the bolt head. An elongated limiting groove is provided on the top wall of the mounting hole, and the length direction of the limiting groove is parallel to the length direction of the bolt head. The length direction of the head is parallel, and a limit screw is screwed on the top of the movable bar, and the head of the limit screw is located inside the limit groove. Nylon locking strips are fixed on the sides of the movable bar that are close to each other, and the length direction of the nylon locking strip is parallel to the length direction of the bolt head. The nylon locking strip is located at the top of the side wall of the movable bar, and an avoidance groove is provided at the top of the movable bar for avoiding the nylon locking strip on the other movable bar. A threaded hole is provided at the bottom end of the main screw, and the threaded hole is connected to the mounting hole. A locking screw is screwed on the threaded hole, and a locking block is provided inside the mounting hole. A groove is provided at the bottom of the locking block, and the locking screw extends into the groove and rests against the top wall of the groove. The top wall of the locking block is provided with anti-slip convex patterns, and the top wall of the locking block presses the lower end surfaces of the two nylon locking strips.
[0006] Preferably, the bolt head is in a rectangular parallelepiped shape, and chamfered corners are provided between intersecting side walls of the bolt head.
[0007] Preferably, the movable strip is a nylon strip, and the movable strip and the nylon locking strip are an integrated structure.
[0008] Preferably, the mutually adjacent sides of the movable bars are provided with mounting grooves, and the two ends of the spring are respectively inserted into the two mounting grooves.
[0009] Preferably, a screwing groove is provided at the bottom of the locking screw, and the bottom end of the locking screw is located inside the threaded hole.
[0010] Preferably, the locking block consists of a main block and side panels, a groove is opened at the bottom end of the main block, two side panels are provided on the upper end surface of the main block, the spring passes through the area clamped by the two side panels, the two side panels correspond to a nylon locking strip respectively, the top walls of the two side panels are provided with anti-slip convex patterns, and the top walls of the side panels are pressed tightly against the lower end surfaces of the corresponding nylon locking strips.
[0011] The beneficial effects of the utility model: the utility model arranges the spring between the two movable bars so that the head of the T-bolt can automatically adjust to a suitable length after being installed in the T-slot, which is more convenient to use; the nylon locking strip, the locking block, and the locking screw cooperate so that the head length of the T-bolt can be locked to avoid length changes due to various reasons during later use.
[0012] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.
Brief Description of the Drawings
[0013] Figure 1 This is the front view of the adjustable T-bolt of the utility model;
[0014] Figure 2 This is a schematic diagram of the matching of the movable strip of the adjustable T-bolt of the utility model;
[0015] Figure 3 It is a schematic diagram of the interior of the mounting hole of the adjustable T-bolt of the utility model.
[0016] In the figure: 1-bolt head, 2-main screw, 3-movable bar, 4-locking block, 10-mounting hole, 11-limiting groove, 20-threaded hole, 21-locking screw, 30-mounting groove, 31-spring, 32-nylon locking strip, 33-avoidance groove, 35-limiting screw, 40-groove, 41-main block, 42-side plate. [Specific implementation method]
[0017] See also Figure 1 , Figure 2 , Figure 3The utility model adjustable T-bolt comprises a bolt head 1, a main screw 2, an active strip 3, a spring 31, a nylon locking strip 32, and a locking block 4. The bolt head 1 is in the shape of an elongated strip, and a main screw 2 is arranged at the bottom center of the bolt head 1. The bolt head 1 and the main screw 2 are an integrated structure. An elongated mounting hole 10 is arranged inside the bolt head 1. The length direction of the mounting hole 10 is parallel to the length direction of the bolt head 1. The mounting hole 10 passes through both ends of the bolt head 1. The mounting hole 10 is a rectangular hole. Both ends of the mounting hole 10 are plugged with active strips 3. The active strips 3 are adapted to the mounting hole 10. A spring 31 which is always in a compressed state is connected between the active strips 3. The length direction of the spring 31 is parallel to the length direction of the bolt head 1. An elongated limiting groove 11 is arranged on the top wall of the mounting hole 10. The length direction of the limiting groove 11 is parallel to the length direction of the bolt head 1. The top of the movable bar 3 is screwed with a limit screw 35, and the head of the limit screw 35 is located in the limit groove 11. The sides of the movable bar 3 that are close to each other are fixed with nylon locking strips 32. The length direction of the nylon locking strip 32 is parallel to the length direction of the bolt head 1. The nylon locking strip 32 is located at the top of the side wall of the movable bar 3. The top of the movable bar 3 is provided with an avoidance groove 33 for avoiding the nylon locking strip 32 on another movable bar 3. The bottom end of the main screw 2 is provided with a threaded hole 20, and the threaded hole 20 is connected to the mounting hole 10. A locking screw 21 is screwed on the threaded hole 20. A locking block 4 is provided inside the mounting hole 10, and a groove 40 is provided at the bottom of the locking block 4. The locking screw 21 extends into the groove 40 and abuts against the top wall of the groove 40. The top wall of the locking block 4 is provided with anti-slip convex patterns, and the top wall of the locking block 4 presses the lower end surfaces of the two nylon locking strips 32 tightly.
[0018] The bolt head 1 is in a rectangular parallelepiped shape, and chamfered corners are arranged between intersecting side walls of the bolt head 1 .
[0019] In order to make the movable bar 3 and the nylon locking strip 32 difficult to separate and convenient to process, the movable bar 3 is a nylon bar, and the movable bar 3 and the nylon locking strip 32 are an integrated structure.
[0020] In order to prevent the spring 31 from being separated from the movable bar 3 , mounting grooves 30 are provided on the mutually adjacent sides of the movable bar 3 , and the two ends of the spring 31 are respectively inserted into the two mounting grooves 30 .
[0021] The bottom of the locking screw 21 is provided with a screwing groove, and the bottom end of the locking screw 21 is located inside the threaded hole 20 .
[0022] In order to prevent the locking block 4 from being easily deflected, the locking block 4 is composed of a main body block 41 and a side plate 42. The groove 40 is opened at the bottom end of the main body block 41. Two side plates 42 are provided on the upper end surface of the main body block 41. The spring 31 passes through the area clamped by the two side plates 42. The two side plates 42 correspond to a nylon locking strip 32 respectively. The top walls of the two side plates 42 are provided with anti-slip convex patterns. The top walls of the side plates 42 are tightly pressed against the lower end surfaces of the corresponding nylon locking strips 32. The distance between the sides of the two side plates 42 that are away from each other is slightly smaller than the width of the mounting hole 10.
[0023] Working process of this utility model:
[0024] When the adjustable T-bolt of the utility model is in operation, in the initial state, the two movable bars 3 are all located inside the mounting hole 10, and the locking block 4 presses the nylon locking strip 32. When the T-bolt is installed on the T-slot, the locking screw 21 is turned, the locking screw 21 no longer presses the locking block 4, and the locking block 4 no longer presses the nylon locking strip 32. The movable bars 3 move away from each other under the action of the spring 31 and extend to the outside of the mounting hole 10 until the two movable bars 3 are respectively supported by the two side walls of the T-slot, and then the locking screw 21 is turned so that the locking screw 21 presses the locking block 4, and the locking block 4 presses the nylon locking strip 32. The anti-skid convex pattern on the locking block 4 is pressed into the nylon locking strip 32. The nylon locking strip 32 is not easy to slide at this time, and the movable bar 3 cannot slide either, so that the length of the T-bolt is fixed and loosening is not easy to occur between the T-bolt and the T-slot.
[0025] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.
Claims
1. Adjustable T-bolt, characterized by: The invention comprises a bolt head (1), a main screw rod (2), a movable bar (3), a spring (31), a nylon locking strip (32), and a locking block (4); the bolt head (1) is in the shape of an elongated strip, a main screw rod (2) is arranged at the bottom center of the bolt head (1), the bolt head (1) and the main screw rod (2) are an integrated structure, a long strip-shaped mounting hole (10) is arranged inside the bolt head (1), the length direction of the mounting hole (10) is parallel to the length direction of the bolt head (1), and the mounting hole (10) passes through the bolt head (1). The mounting hole (10) is a rectangular hole at both ends, and movable bars (3) are plugged at both ends of the mounting hole (10). The movable bars (3) are adapted to the mounting hole (10). A spring (31) which is always in a compressed state is connected between the movable bars (3). The length direction of the spring (31) is parallel to the length direction of the bolt head (1). A long strip-shaped limiting groove (11) is provided on the top wall of the mounting hole (10). The length direction of the limiting groove (11) is parallel to the length direction of the bolt head (1). The movable bars (31) are connected to the mounting hole (10). 3) A limit screw (35) is screwed onto the top end, the head of the limit screw (35) is located inside the limit groove (11), nylon locking strips (32) are fixed to the mutually adjacent sides of the movable bar (3), the length direction of the nylon locking strip (32) is parallel to the length direction of the bolt head (1), the nylon locking strip (32) is located at the top end of the side wall of the movable bar (3), and an avoidance groove (33) is provided at the top end of the movable bar (3) for avoiding the nylon locking strip (32) on another movable bar (3), and the main screw (2) A threaded hole (20) is provided at the bottom end, the threaded hole (20) is connected to the mounting hole (10), a locking screw (21) is screwed on the threaded hole (20), a locking block (4) is provided inside the mounting hole (10), a groove (40) is provided at the bottom of the locking block (4), the locking screw (21) extends into the groove (40) and abuts against the top wall of the groove (40), the top wall of the locking block (4) is provided with anti-slip convex patterns, and the top wall of the locking block (4) is pressed tightly against the lower end surfaces of the two nylon locking strips (32).
2. The adjustable T-bolt according to claim 1, characterized in that: The bolt head (1) is in the shape of a rectangular parallelepiped, and chamfered corners are provided between intersecting side walls of the bolt head (1).
3. The adjustable T-bolt according to claim 1, characterized in that: The movable strip (3) is a nylon strip, and the movable strip (3) and the nylon locking strip (32) are an integrated structure.
4. The adjustable T-bolt according to claim 1, characterized in that: The movable bars (3) are provided with mounting grooves (30) on the sides close to each other, and the two ends of the spring (31) are respectively inserted into the two mounting grooves (30).
5. The adjustable T-bolt according to claim 1, characterized in that: The bottom of the locking screw (21) is provided with a screwing groove, and the bottom end of the locking screw (21) is located inside the threaded hole (20).
6. The adjustable T-bolt according to claim 1, characterized in that: The locking block (4) is composed of a main body block (41) and a side plate (42). The groove (40) is opened at the bottom end of the main body block (41). Two side plates (42) are arranged on the upper end surface of the main body block (41). The spring (31) passes through the area clamped by the two side plates (42). The two side plates (42) correspond to a nylon locking strip (32) respectively. The top walls of the two side plates (42) are provided with anti-slip convex patterns. The top walls of the side plates (42) are pressed tightly against the lower end surfaces of the corresponding nylon locking strips (32).