Eccentricity adjusting mechanism for pull rod of lock system

Abstract

The invention belongs to the technical field of aircraft system design, and relates to a lock system pull rod eccentricity adjusting mechanism which comprises a first connecting rod, a first eccentric sleeve, a first inner sleeve, a small screw, a second eccentric sleeve, a second inner sleeve and a second connecting rod. The first inner sleeve is arranged at the right end of the first eccentric sleeve, and the first eccentric sleeve and the first inner sleeve are not concentric. The second inner sleeve is arranged at the right end of the second eccentric sleeve, the second eccentric sleeve and the second inner sleeve are not concentric, the right end face of the first inner sleeve makes contact with the left end face of the second eccentric sleeve and are connected through a small screw, and the first inner sleeve and the second eccentric sleeve can rotate around the small screw. One end of a first connecting rod penetrates through the first eccentric sleeve and the first inner sleeve to be in contact with the end face of the small screw to limit axial movement of the first connecting rod, and a second connecting rod penetrates through the second inner sleeve and the second eccentric sleeve to be in contact with the end face of the small screw to limit axial movement of the first connecting rod; the pull rod can be adjusted in any direction in the axial direction and the radial direction, the pull rod can be connected with the front pull rod and the rear pull rod with spatial position dislocation, and non-forced installation of the two pull rods is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft system design and relates to an eccentric adjustment mechanism of a pull rod of a lock system. Background Art

[0002] The canopy lock system is used to fix the movable canopy to the fuselage structure and transmit the pressurization load and aerodynamic load borne by the movable canopy to the fuselage. The cockpit section of a two-seater aircraft is long, and a tie rod needs to be arranged to transmit the lock system movement over a long distance to ensure the coordination and accuracy of the lock mechanism. As the length of the tie rod increases, the deviation generated during the assembly process will cause the tie rod installation to be forced and bent. Therefore, a corresponding adjustment mechanism needs to be designed to adapt to the tie rod assembly error and reduce the assembly stress while ensuring the coordination and accuracy of the movement. Summary of the invention

[0003] Purpose of the present invention:

[0004] The purpose of the present invention is to provide an eccentric adjustment mechanism for a lock system pull rod, which can satisfy the adjustment of the pull rod in any direction in the axial and radial directions, so as to connect the front and rear pull rods with spatial position displacement, thereby realizing the non-forced installation of the two pull rods.

[0005] The technical solution of the present invention:

[0006] A locking system pull rod eccentric adjustment mechanism, comprising a connecting rod 1, an eccentric sleeve 2, an inner sleeve 3, a small screw 4, an eccentric sleeve 7, an inner sleeve 8 and a connecting rod 9;

[0007] The inner sleeve 3 is arranged at the right end of the eccentric sleeve 2, and the eccentric sleeve 2 is not concentric with the inner sleeve 3; the inner sleeve 28 is arranged at the right end of the eccentric sleeve 27, and the eccentric sleeve 27 is not concentric with the inner sleeve 28, the right end face of the inner sleeve 3 contacts the left end face of the eccentric sleeve 27, and is connected by a small screw 4, and the inner sleeve 3 and the eccentric sleeve 27 can rotate around the small screw 4, one end of the connecting rod 1 passes through the eccentric sleeve 2, the inner sleeve 3 contacts the end face of the small screw 4 to limit the axial movement of the connecting rod 1, and the connecting rod 29 passes through the inner sleeve 28, the eccentric sleeve 27 contacts the end face of the small screw 4 to limit the axial movement of the connecting rod 9.

[0008] Furthermore, it also includes a round nut 6, which is arranged at the right end of the small screw 4. The eccentric sleeve 2 7 and the inner sleeve 1 3 are connected through the small screw 4 and the round nut 6.

[0009] Furthermore, it also includes a flat washer 5, which is sleeved on the small screw 4 and is located between the left end surface of the round nut 6 and the inner end surface of the eccentric sleeve 7.

[0010] Furthermore, the round nut 6 is prevented from loosening by punching points.

[0011] Further, the right end of the eccentric sleeve 2 is an open end, and the left end is a closed end, the left end of the inner sleeve 3 is an open end, and the right end is a closed end, the open end of the inner sleeve 3 is connected to the open end of the eccentric sleeve 2, the closed end of the inner sleeve 3 is provided with an opening, and the closed end of the eccentric sleeve 2 is also provided with an opening;

[0012] The right end of the eccentric sleeve 27 is an open end and the left end is a closed end. The left end of the inner sleeve 28 is an open end and the right end is a closed end. The open end of the inner sleeve 28 is connected to the open end of the eccentric sleeve 27. The closed end of the inner sleeve 28 is provided with an opening, and the closed end of the eccentric sleeve 27 is also provided with an opening.

[0013] Furthermore, the opening end of the inner sleeve 1 3 is connected to the opening end of the eccentric sleeve 1 2 through a thread, and the opening end of the inner sleeve 2 8 is connected to the opening end of the eccentric sleeve 2 7 through a thread.

[0014] Furthermore, the connecting rod 1 sequentially passes through the opening of the closed end of the eccentric sleeve 2, the open end of the inner sleeve 3 and contacts the left end face of the small screw 4 to limit the axial movement of the connecting rod 1; the connecting rod 2 9 sequentially passes through the opening of the closed end of the inner sleeve 2 8, the open end of the eccentric sleeve 2 7 and contacts the right end face of the small screw 4 to limit the axial movement of the connecting rod 9.

[0015] Furthermore, an external thread is provided on the outer circumferential surface of the left end of the connecting rod 1 for connecting with one side pull rod; an external thread is provided on the outer circumferential surface of the right end of the connecting rod 2 9 for connecting with the other side pull rod.

[0016] Beneficial effects of the present invention:

[0017] The present invention proposes an eccentric adjustment mechanism for a lock system pull rod, which adopts the combination of two completely identical eccentric sleeves (including an inner sleeve and an eccentric sleeve) to enable it to achieve adjustment in any direction and any offset within a circle with an eccentric distance as a radius on a vertical plane. At the same time, the connecting rods at the front and rear ends of the mechanism have threads of considerable length, so that it can achieve axial length adjustment. The combination of the two enables it to have a certain range of adjustment capabilities in any direction in space. The connecting rod and the small screw in the eccentric adjustment mechanism are in contact with each other, so that the adjustment mechanism can transmit axial forces in different directions, meeting the requirements of the lock system pull rod for transmitting driving force. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an outline diagram of the pull rod eccentric adjustment mechanism of the lock system of the present invention;

[0019] Figure 2 yes Figure 1 Cross-sectional view along AA direction;

[0020] Figure 3 It is a schematic diagram of the eccentric distance of the eccentric sleeve;

[0021] Figure 4 It is a schematic diagram of the change of the center of the connecting rod 9;

[0022] Among them, 1. One connecting rod, 2. One eccentric sleeve, 3. One inner sleeve, 4. Small screw, 5. Flat washer, 6. Round nut, 7. Two eccentric sleeves, 8. Two inner sleeves, 9. Two connecting rods. DETAILED DESCRIPTION

[0023] Embodiment 1:

[0024] like Figure 1 , 2 As shown, a locking system pull rod eccentric adjustment mechanism proposed by the present invention comprises a connecting rod 1, an eccentric sleeve 2, an inner sleeve 3, a small screw 4, an eccentric sleeve 7, an inner sleeve 8 and a connecting rod 9;

[0025] The inner sleeve 3 is arranged at the right end of the eccentric sleeve 2, and the eccentric sleeve 2 is not concentric with the inner sleeve 3; the inner sleeve 28 is arranged at the right end of the eccentric sleeve 27, and the eccentric sleeve 27 is not concentric with the inner sleeve 28, the right end face of the inner sleeve 3 contacts the left end face of the eccentric sleeve 27, and is connected by a small screw 4, and the inner sleeve 3 and the eccentric sleeve 27 can rotate around the small screw 4, one end of the connecting rod 1 passes through the eccentric sleeve 2, the inner sleeve 3 contacts the end face of the small screw 4 to limit the axial movement of the connecting rod 1, and the connecting rod 29 passes through the inner sleeve 28, the eccentric sleeve 27 contacts the end face of the small screw 4 to limit the axial movement of the connecting rod 9.

[0026] It also includes a round nut 6, which is arranged at the right end of the small screw 4. The eccentric sleeve 2 7 and the inner sleeve 1 3 are connected through the small screw 4 and the round nut 6.

[0027] The utility model further comprises a flat washer 5 which is sleeved on the small screw rod 4 and is located between the left end surface of the round nut 6 and the inner end surface of the eccentric sleeve 7 .

[0028] The round nut 6 is prevented from loosening by punching points to prevent it from loosening and causing the small screw 4 to fall off.

[0029] Among them, the specific structure of the eccentric sleeve 2 is: the right end of the eccentric sleeve 2 is an open end, and the left end is a closed end; the specific structure of the inner sleeve 3 is: the left end of the inner sleeve 3 is an open end, and the right end is a closed end; the open end of the inner sleeve 3 is connected to the open end of the eccentric sleeve 2, the closed end of the inner sleeve 3 is provided with an opening, and the closed end of the eccentric sleeve 2 is also provided with an opening; the specific structure of the eccentric sleeve 27 is: the right end of the eccentric sleeve 27 is an open end, and the left end is a closed end; the specific structure of the inner sleeve 28 is: the left end of the inner sleeve 28 is an open end, and the right end is a closed end; the open end of the inner sleeve 28 is connected to the open end of the eccentric sleeve 27, the closed end of the inner sleeve 28 is provided with an opening, and the closed end of the eccentric sleeve 27 is also provided with an opening , wherein the open end of the inner sleeve 3 is connected to the open end of the eccentric sleeve 2 by a thread, and the open end of the inner sleeve 28 is connected to the open end of the eccentric sleeve 27 by a thread; wherein the connecting rod 1 sequentially passes through the opening hole of the closed end of the eccentric sleeve 2, the open end of the inner sleeve 3 contacts the left end face of the small screw 4 to limit the axial movement of the connecting rod 1; the connecting rod 29 sequentially passes through the opening hole of the closed end of the inner sleeve 28, the open end of the eccentric sleeve 27 contacts the right end face of the small screw 4 to limit the axial movement of the connecting rod 9, wherein an external thread is arranged on the outer circumferential surface of the left end of the connecting rod 1 for connecting with one side pull rod; an external thread is arranged on the outer circumferential surface of the right end of the connecting rod 29 for connecting with the other side pull rod.

[0030] Embodiment 2:

[0031] Adjustment mechanism such as Figure 1 As shown, the connecting rod 1, the eccentric sleeve 2, the inner sleeve 3, the small screw 4, the round nut 6, the connecting rod 9, etc. The eccentric sleeves 2, 7, and the inner sleeves 3, 8 are completely identical.

[0032] When assembling the adjustment mechanism, the eccentric sleeve 7 and the inner sleeve 3 are connected with the small screw 4 and the round nut 6 to ensure that the eccentric sleeve 7 and the inner sleeve 3 can rotate freely, and then the round nut is punched to prevent loosening. Then the connecting rods 1, 9, the eccentric sleeve 2, and the inner sleeve 8 are assembled, and the assembly is completed by adjusting the threaded connection between the eccentric sleeve and the inner sleeve to ensure that the connecting rod 1, the connecting rod 9, and the small screw 4 will not move along the axial direction and can rotate freely.

[0033] When connected with the lock system pull rod, the thread on the connecting rod 1 is connected with one side of the pull rod, and the axial position of the adjustment mechanism is adjusted by adjusting the length of the thread screwing in. When connected with the pull rod on the other side, the eccentric sleeves 2 and 8 can be rotated to adjust the position of the connecting rod 9 in the vertical plane of the pull rod, which can ensure that the center line of the connecting rod 9 is positioned at any position within the circle with the eccentric distance 2R as the radius. After adjustment, the connecting rod 9 can be threadedly connected with the other end of the pull rod to realize the assembly of the two-section space pull rod. Since the connecting rod 1, the connecting rod 9, and the small screw 4 have no movement along the axial direction, the load in the axial direction of the pull rod can be transmitted.

[0034] The working principle of the present invention is:

[0035] How it works

[0036] During the product implementation process, the eccentric sleeve 2 and the inner sleeve 3 are not concentric. Figure 2 When the eccentric sleeve 2 and the inner sleeve 3 assembly rotate around the central axis of the connecting rod 1, the center of the through hole on the inner sleeve 3 will be on a circumference line with the center line of the connecting rod 1 as the center and the eccentric distance R as the radius ( Figure 4 Similarly, when the eccentric sleeve 2 7 and the inner sleeve 2 8 assembly rotate around the central axis of the small screw 4, the center of the through hole on the inner sleeve 2 8 will be on a circumference line ( Figure 4 Move on the circle 2).

[0037] At this time, if the two sets of eccentric sleeves rotate simultaneously, the relative position of the center line of the connecting rod 2 9 and the center line of the connecting rod 1 will appear at any position within the circle with a radius of 2R as the angles α and β of the center lines change, thereby adjusting the spatial position deviation of the pull rod.

[0038] The combination of two identical eccentric sleeves (including inner sleeve and eccentric sleeve) enables the adjustment of any direction and any offset within the range of a circle with eccentricity as radius on the vertical plane. At the same time, the connecting rods at both ends of the mechanism have threads of considerable length, which enables the adjustment of the length in the axial direction. The combination of the two enables the adjustment capability within a certain range in any direction in space. The connecting rod and the small screw in the eccentric adjustment mechanism contact each other, so that the adjustment mechanism can transmit axial forces in different directions, meeting the requirements of the lock system pull rod for transmitting driving force.

Claims

1. A locking system pull rod eccentric adjustment mechanism, characterized in that: It includes a connecting rod, an eccentric sleeve, an inner sleeve, a small screw, an eccentric sleeve, an inner sleeve and a connecting rod; The inner sleeve one is arranged at the right end of the eccentric sleeve one, and the eccentric sleeve one is not concentric with the inner sleeve one; the inner sleeve two is arranged at the right end of the eccentric sleeve two, and the eccentric sleeve two is not concentric with the inner sleeve two, the right end face of the inner sleeve one contacts the left end face of the eccentric sleeve two, and are connected by a small screw, and the inner sleeve one and the eccentric sleeve two can rotate around the small screw, one end of the connecting rod one passes through the eccentric sleeve one, the inner sleeve one contacts the end face of the small screw to limit the axial movement of the connecting rod one, and the connecting rod two passes through the inner sleeve two, the eccentric sleeve two contacts the end face of the small screw to limit the axial movement of the connecting rod one.

2. The locking system pull rod eccentric adjustment mechanism according to claim 1, characterized in that: It also includes a round nut, which is arranged at the right end of the small screw rod. The eccentric sleeve 2 and the inner sleeve 1 are connected through the small screw rod and the round nut.

3. The locking system pull rod eccentric adjustment mechanism according to claim 1, characterized in that: It also includes a flat washer, which is sleeved on the small screw rod and is located between the left end surface of the round nut and the second inner end surface of the eccentric sleeve.

4. The locking system pull rod eccentric adjustment mechanism according to claim 2, characterized in that: The round nut is prevented from loosening by punching point.

5. The locking system pull rod eccentric adjustment mechanism according to claim 1, characterized in that: The right end of the eccentric sleeve is an open end, and the left end is a closed end. The left end of the inner sleeve is an open end, and the right end is a closed end. The open end of the inner sleeve is connected to the open end of the eccentric sleeve. The closed end of the inner sleeve is provided with an opening, and the closed end of the eccentric sleeve is also provided with an opening. The right end of the eccentric sleeve 2 is an open end and the left end is a closed end. The left end of the inner sleeve 2 is an open end and the right end is a closed end. The open end of the inner sleeve 2 is connected to the open end of the eccentric sleeve 2. The closed end of the inner sleeve 2 is provided with an opening, and the closed end of the eccentric sleeve 2 is also provided with an opening.

6. The locking system pull rod eccentric adjustment mechanism according to claim 5, characterized in that: An opening end of the inner sleeve is connected to an opening end of the eccentric sleeve through a thread, and a second opening end of the inner sleeve is connected to a second opening end of the eccentric sleeve through a thread.

7. The locking system pull rod eccentric adjustment mechanism according to claim 5, characterized in that: Connecting rod one sequentially passes through the opening of the closed end of eccentric sleeve one, and the open end of inner sleeve one contacts with the left end face of the small screw to limit the axial movement of connecting rod one; connecting rod two sequentially passes through the opening of the closed end of inner sleeve two, and the open end of eccentric sleeve two contacts with the right end face of the small screw to limit the axial movement of connecting rod one.

8. The locking system pull rod eccentric adjustment mechanism according to claim 7, characterized in that: An external thread is arranged on the outer circumferential surface of the left end of the connecting rod 1 for connecting with one side pull rod; an external thread is arranged on the outer circumferential surface of the right end of the connecting rod 2 for connecting with the other side pull rod.

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