Simple locking device with no-clearance fit locking function

Abstract

The utility model discloses a simple locking device with no-clearance fit locking. The simple locking device comprises a guide rail groove, a guide rail and a locking mechanism. The locking mechanism comprises a fixed base, a movable locking piece, a locking nut seat and a locking bolt. The fixed base is fixed at the tail end of the guide rail groove and is provided with a first wedge-shaped part; a second wedge-shaped part is arranged at the bottom of the movable locking piece, and the second wedge-shaped part is matched with the first wedge-shaped part and attached to the first wedge-shaped part; the locking nut seat is connected with the movable locking piece through a locking bolt, and one end of the locking nut seat is fixedly connected with the tail end of the guide rail. When locking is carried out, the movable locking piece and the locking nut base are connected into a whole through the locking bolt, the first wedge-shaped part is attached to the second wedge-shaped part, the fixed base limits and blocks the movable locking piece, and a guide rail of the movable locking piece is prevented from stretching out or retracting back; the inclined surfaces of the second wedge-shaped part and the first wedge-shaped part are matched, gaps are prevented from being generated, and the guide rail cannot shake in a locked state.

Description

Technical Field

[0001] The embodiments of the utility model belong to the technical field of locking devices, and more specifically, relate to a simple locking device with no-gap fit and locking. Background Art

[0002] Currently, most positioning and locking mechanisms are latches, which require high position accuracy for the two mechanisms that need to be positioned. If the position accuracy is not high, a gap needs to be reserved in the latch hole, and the reserved gap can easily cause shaking between the two mechanisms.

[0003] Therefore, at this stage, there is an urgent need for a locking device that can lock two mechanisms with low positioning accuracy without gaps. The device is used to lock telescopic steel structures or telescopic guide rail modules. It can be adjusted and locked for the steel structure guide rail itself due to processing deformation, product deformation, errors in telescopic operation, etc., to avoid the generation of gaps and prevent shaking between the two mechanisms. Summary of the invention

[0004] In view of the fact that the locking mechanism of the prior art has gaps which easily lead to shaking between the mechanisms, the utility model provides a simple locking device with no gap fitting and locking to solve such problem.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a simple locking device for gap-free locking, comprising a guide rail groove in which a guide rail is slidably arranged; a fixed base fixedly arranged at the end of the guide rail groove, a first wedge-shaped portion being arranged on the top; a locking nut seat fixedly connected to the end of the guide rail; and a movable locking member connected to the locking nut seat by a locking bolt, a second wedge-shaped portion being arranged on the bottom of the movable locking member, and the second wedge-shaped portion being fitted with the first wedge-shaped portion.

[0006] Furthermore, the movable locking member is an inverted groove-shaped structure, with a first screw hole on the top, a limiting groove in the middle of the bottom, and second wedge-shaped parts at the bottom of the groove walls on both sides.

[0007] Furthermore, the first threaded hole is adapted to the locking bolt, and the height of the movable locking member on the fixed base is adjusted by adjusting the depth of the locking bolt; the limiting groove is adapted to the width of the locking nut seat to limit the horizontal longitudinal displacement of the locking nut seat.

[0008] Furthermore, the locking nut seat is a block structure with a second screw hole provided at the center thereof.

[0009] Furthermore, the inclined surface of the first wedge-shaped portion faces away from the guide rail groove, and the guide rail is retracted and locked by contacting with the second wedge-shaped portion.

[0010] Furthermore, the inclined surface of the first wedge-shaped portion faces the guide rail groove, and the guide rail is extended and locked by contacting with the second wedge-shaped portion.

[0011] Furthermore, the thickness of the narrowest parts of the first wedge-shaped portion and the second wedge-shaped portion is 5 mm or more.

[0012] Furthermore, the guide rail groove is a U-shaped groove, and a limit block is provided in the groove to limit the guide rail so that the guide rail maintains a linear displacement along the horizontal lateral direction.

[0013] Furthermore, the guide rail is a square tube, and its sliding limiter is arranged in the guide rail groove, and performs reciprocating linear displacement along the guide rail groove.

[0014] In general, the above technical solutions conceived by the utility model can achieve the following beneficial effects compared with the prior art:

[0015] (1) The simple locking device of the utility model can adjust the errors of the steel structure guide rail itself due to processing deformation, product deformation, and telescopic operation by sliding the movable locking member upward or downward along the first wedge-shaped portion. When the second wedge-shaped portion is in contact with the first wedge-shaped portion, the gap is avoided and the guide rail is locked to prevent it from shaking.

[0016] (2) The simple locking device of the utility model has a simple structure, low cost, and is easy to operate. It can be applied to scenes where the telescopic precision is not high, and has a high promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a simple locking device for locking with no gap in an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the locking mechanism in the embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the movable locking member in the embodiment of the utility model;

[0020] Figure 4 This is a structural schematic diagram of a locking nut seat in an embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of a state in which the simple locking device in an embodiment of the utility model is retracted and locked;

[0022] Figure 6 This is a schematic diagram of the state in which the simple locking device in the embodiment of the utility model is extended and locked.

[0023] In all the drawings, the same figure marks represent the same technical features, specifically: 1-guide rail groove, 2-guide rail, 3-fixed base, 301-first wedge-shaped portion, 4-movable locking member, 401-second wedge-shaped portion, 402-first screw hole, 403-limiting groove, 5-locking nut seat, 501-second screw hole, 6-locking bolt. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] like Figure 1-6 As shown, the utility model provides a simple locking device with gapless locking, including a guide rail groove 1, a guide rail 2 and a locking mechanism. The locking mechanism includes a fixed base 3, a movable locking member 4, a locking nut seat 5 and a locking bolt 6. The fixed base 3 is fixed to the end of the guide rail groove 1, and is provided with a first wedge-shaped portion 301. When the device is retracted and locked, the first wedge-shaped portion 301 faces away from the guide rail groove 1, and when the device is extended and locked, the first wedge-shaped portion 301 faces the guide rail groove 1; the bottom of the movable locking member 4 is provided with a second wedge-shaped portion 401, and the second wedge-shaped portion 401 is adapted to the first wedge-shaped portion 301, and the two are in close contact; the locking nut seat 5 is connected to the movable locking member 4 through the locking bolt 6, and one end of the locking nut seat is fixedly connected to the end of the guide rail 2. When retracting or extending for locking, the movable locking piece 4 and the locking nut seat 5 are connected as a whole through the locking bolt 6, and the first wedge-shaped portion 301 is fitted with the second wedge-shaped portion 401. At this time, the fixed base 3 limits the movable locking piece 4 to prevent the guide rail 2 from extending or retracting; through the cooperation of the second wedge-shaped portion 401 and the inclined surface of the first wedge-shaped portion 301, when the guide rail 2 slides and an error occurs, the movable locking block 4 can be locked upward or downward, and the generation of gaps is avoided, and the guide rail will not shake when it is locked.

[0026] like Figure 1 As shown, the guide rail groove 1 is a U-shaped groove, and a limit block is provided in the groove to limit the guide rail 2, so that the guide rail 2 can maintain a linear displacement along the horizontal lateral direction; the guide rail 2 is a square tube, and its sliding limit is set in the guide rail groove 1, and can perform reciprocating linear displacement along the guide rail groove 1, and its end is fixedly connected to the side of the locking nut seat 5 by welding.

[0027] like Figure 2As shown, the locking mechanism includes a fixed base 3, a movable locking member 4, a locking nut seat 5 and a locking bolt 6. The locking bolt 6 passes through the movable locking member 4 and is threadedly connected to the movable locking member 4. The movable locking member 4 is fitted with a first wedge-shaped portion 301 provided on the top of the fixed base 4 through a second wedge-shaped portion 401 provided at the bottom, thereby blocking and locking the extension or retraction of the guide rail 2.

[0028] like Figure 3 As shown, the movable locking member 4 is an inverted groove structure, with a first screw hole 402 on the top, a limiting groove 403 in the middle of the bottom, and a second wedge-shaped portion 401 at the bottom of the groove wall on both sides. The first threaded hole 402 is adapted to the locking bolt 6, and the height of the movable locking member 4 on the fixed base 3 can be adjusted by adjusting the depth of the locking bolt 6. The limiting groove 403 is adapted to the width of the locking nut seat 5, which can limit the horizontal and longitudinal displacement of the locking nut seat 5 so that the locking nut seat 5 can be aligned with the locking bolt 6. The second wedge-shaped portion 401 blocks the displacement of the guide rail 2 by fitting with the first wedge-shaped portion 301, thereby performing a locking operation; in order to ensure the structural strength of the second wedge-shaped portion 401, the thickness of the narrowest part thereof is 5 mm or more.

[0029] like Figure 4 The locking nut seat 5 is a block structure, and a second screw hole 501 is provided at the center thereof. The second screw hole 501 is adapted to the locking bolt 6, and the locking nut seat 5 and the movable locking member 5 can be connected as one by threading with the locking bolt 6.

[0030] The fixed base 5 is fixed to the end of the guide rail groove 1 by welding or bolts, and a first wedge-shaped portion 301 is provided on the top thereof. To ensure the structural strength of the first wedge-shaped portion 301, the thickness of the narrowest part thereof is 5 mm or more; the first wedge-shaped portion 301 can be oriented according to the extension locking or retraction locking requirements of the guide rail 2: Figure 5 As shown, when the guide rail 2 needs to be retracted and locked, the inclined surface of the first wedge-shaped portion 301 faces away from the guide rail groove 1, and the second wedge-shaped portion 401 contacts the first wedge-shaped portion 301, limiting the movable locking member 4 from moving to the left, thereby locking the guide rail 2 to prevent it from continuing to extend; Figure 6 As shown, when the guide rail 2 needs to be extended and locked, the inclined surface of the first wedge-shaped portion 301 faces the guide rail groove 1, and the second wedge-shaped portion 401 contacts the first wedge-shaped portion 301, limiting the movable locking member 4 from moving to the right, thereby locking the guide rail 2 to prevent it from further retracting.

[0031] When the locking device of the present invention performs a locking operation, the slide rail 2 drives the locking nut seat 5 to move to the locking point, the limiting groove 403 of the movable locking piece 4 is sleeved on the locking nut seat 5, and the second wedge-shaped portion 401 is fitted with the first wedge-shaped portion 301, and the movable locking piece 4 slides upward or downward along the first wedge-shaped portion 301 until the first screw hole 402 is aligned with the second screw hole 501, so that the central axes of the two in the vertical direction coincide with each other. After completing the alignment work, a locking bolt is used to pass through the first screw hole 402 and the second screw hole 501 in sequence, so that the movable locking piece 4 is connected to the locking nut seat 5 as a whole; the second wedge-shaped portion 401 is in contact with the first wedge-shaped portion 301, so as to avoid the generation of a gap and limit the displacement of the movable locking piece 4, thereby locking the guide rail 2 to prevent it from shaking.

[0032] The simple locking device of the utility model can adjust the errors of the steel structure guide rail itself due to processing deformation, product deformation, and telescopic operation by sliding the movable locking member 4 upward or downward along the first wedge-shaped portion 301. When the second wedge-shaped portion 401 is in contact with the first wedge-shaped portion 301, the gap is avoided and the guide rail 2 is locked to prevent it from shaking.

[0033] The simple locking device of the utility model has a simple structure, low cost, and is easy to operate. It can be applied to scenes where the telescopic precision is not high, and has a high promotion value.

[0034] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A simple locking device with no gap fit and locking, characterized in that: include: A guide rail groove (1) in which a guide rail (2) is slidably arranged; A fixed base (3) fixedly arranged at the end of the guide rail groove (1), with a first wedge-shaped portion (301) being provided on the top thereof; A locking nut seat (5) fixedly connected to the end of the guide rail (2); And a movable locking member (4) connected to a locking nut seat (5) via a locking bolt (6), wherein a second wedge-shaped portion (401) is provided at the bottom of the movable locking member (4), and the second wedge-shaped portion (401) is fitted with the first wedge-shaped portion (301).

2. A simple locking device with no-gap fit and locking according to claim 1, characterized in that: The movable locking member (4) is an inverted slot-shaped structure, with a first screw hole (402) on the top, a limiting slot (403) in the middle of the bottom, and second wedge-shaped portions (401) at the bottom of the slot walls on both sides.

3. A simple locking device with no-gap fit and locking according to claim 2, characterized in that: The first screw hole (402) is matched with the locking bolt (6), and the height of the position of the movable locking member (4) on the fixed base (3) is adjusted by adjusting the screwing depth of the locking bolt (6); the limiting groove (403) is matched with the width of the locking nut seat (5) to limit the horizontal longitudinal displacement of the locking nut seat (5).

4. A simple locking device with gapless locking according to any one of claims 1 to 3, characterized in that: The locking nut seat (5) is a block-shaped structure, and a second screw hole (501) is provided at the center thereof.

5. A simple locking device with gapless locking according to any one of claims 1 to 3, characterized in that: The inclined surface of the first wedge-shaped portion (301) faces away from the guide rail groove (1), and contacts with the second wedge-shaped portion (401), thereby retracting and locking the guide rail (2).

6. A simple locking device with gapless locking according to any one of claims 1 to 3, characterized in that: The inclined surface of the first wedge-shaped portion (301) faces the guide rail groove (1), and by abutting against the second wedge-shaped portion (401), the guide rail (2) is extended and locked.

7. A simple locking device with gapless locking according to any one of claims 1 to 3, characterized in that: The thickness of the narrowest part of the first wedge-shaped portion (301) and the second wedge-shaped portion (401) is 5 mm or more.

8. A simple locking device with gapless locking according to any one of claims 1 to 3, characterized in that: The guide rail groove (1) is a U-shaped groove, and a limit block is provided in the groove to limit the guide rail (2), so that the guide rail (2) maintains linear displacement along the horizontal lateral direction.

9. A simple locking device with gapless locking according to any one of claims 1 to 3, characterized in that: The guide rail (2) is a square tube, and its sliding limiter is arranged in the guide rail groove (1), and performs reciprocating linear displacement along the guide rail groove (1).

Images