A type of bakelite knob-type locking tool
By designing a bakelite knob-type locking and tightening tool that includes a handle, locking screw, connecting rod, and sleeve, the problems of existing tool damage and single-point stress concentration are solved, achieving uniform force distribution and synchronous operation, and reducing maintenance costs and operational difficulty.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHU STATE-OWNED FACTORY OF MACHINING
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-03
Smart Images

Figure CN224445859U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aviation repair technology, specifically a bakelite knob-type locking and tightening tool. Background Technology
[0002] Aircraft avionics commonly use a latching system for securing equipment. One type of latch is the bakelite knob, such as... Figure 1 As shown, the latch a mainly includes a plum blossom-shaped bakelite knob b, a bowl-shaped metal cap c, and a threaded metal locking rod d. The airborne equipment is installed and secured as follows: Place the airborne equipment into the aircraft's dedicated mounting bracket. Use the cap fixed to the latch on the mounting bracket to cover the locking ring on the airborne equipment. Then, slowly tighten the bakelite knob on the latch to firmly press the cap against the locking ring, thus securely fixing the airborne equipment to its mounting bracket.
[0003] In existing technologies, using tools such as O-rings to clamp bakelite knobs during tightening or loosening can easily cause bakelite cracks and chipping, and in severe cases, lead to unnecessary replacement of the latches. Furthermore, for airborne equipment secured with multiple latches, the tightening or loosening of each bakelite knob must be coordinated and consistent to avoid stress concentration at a single point on the airborne equipment, which could damage the product. Current methods involve alternating, small-amplitude, and cyclical tightening and loosening of each knob, which is difficult to operate and requires highly skilled personnel.
[0004] Therefore, it is necessary to design a special bakelite knob-type locking tool that also has the function of coordinating the tightening and loosening of multiple knobs to avoid quality problems during the disassembly and assembly of airborne equipment locks. Utility Model Content
[0005] To solve the above problems, this utility model proposes a bakelite knob-type locking and tightening tool.
[0006] A bakelite knob-type locking and tightening tool includes a handle, two sets of connecting rods connected to the handle by two sets of locking screws, and two sets of sleeves connected to the connecting rods by two sets of pins.
[0007] The handle is an I-shaped structure;
[0008] A rubber pad is provided at the bottom of the locking screw.
[0009] Furthermore, the lower end of the handle has trapezoidal grooves at both ends of the columnar rod.
[0010] Furthermore, the end of the locking screw is in the shape of a trapezoidal lug.
[0011] Furthermore, one end of the connecting rod is a spherical structure with a through hole, the size of which matches the size of the columnar rod at the lower end of the handle.
[0012] Furthermore, the end of the connecting rod away from the spherical structure is a fork-shaped lug with a through hole on the side, and is fixed to the sleeve by a pin.
[0013] Furthermore, the sleeve has a bell-shaped structure with five notches on its cylindrical body. The size of the notches matches the plum blossom-shaped protrusions on the airborne accessory locking bakelite knob.
[0014] The beneficial effects of this utility model are: This utility model ensures that the bakelite knob can be evenly stressed during the tightening and loosening process, avoiding damage to the bakelite knob caused by improper use of tools during equipment maintenance, thus avoiding unnecessary maintenance cycles and costs; At the same time, the tool can also install a matching number of sleeves 5 according to the number of fixed locks of the airborne equipment, ensuring that each lock can be loosened or tightened in one go and in a coordinated manner during the use of the tool, greatly reducing the inconvenience and skill requirements of personnel caused by the traditional method of operating one by one, in small amplitude, and in a cycle, and also avoiding the risk of product damage caused by single-point stress concentration of airborne equipment due to improper operation. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0016] Figure 1 This is a schematic diagram of the product assembly structure in the background art of this utility model;
[0017] Figure 2 This is a schematic diagram of the exploded structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the handle structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the connecting rod structure of this utility model;
[0020] Figure 5 This is a schematic diagram of the sleeve structure of this utility model;
[0021] Figure 6 This is a three-dimensional structural diagram of the product in the background technology of this utility model;
[0022] Reference numerals: 1. Handle; 2. Locking screw; 201. Rubber pad; 3. Connecting rod; 4. Pin; 5. Sleeve; a. Lock; b. Bakelite knob; c. Cap; d. Locking rod. Detailed Implementation
[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the utility model will be further described below.
[0024] like Figures 1 to 6As shown, a bakelite knob-type locking and tightening tool includes a handle 1, two sets of connecting rods 3 connected to the handle 1 by two sets of locking screws 2, and two sets of sleeves 5 connected to the connecting rods 3 by two sets of pins 4. The number of sleeves 5 can be selected according to the number of fixed locks on the airborne equipment, and it has the function of synchronous and coordinated tightening and loosening of different numbers of locks to ensure that no stress concentration occurs on the airborne equipment during operation, which may cause product damage.
[0025] like Figure 2 As shown, the handle 1 has an I-shaped structure;
[0026] The bottom of the locking screw 2 is provided with a rubber pad 201 to ensure that the connecting rod 3 can be reliably locked on the handle 1.
[0027] Based on the above design, this utility model can ensure that the bakelite knob can be evenly stressed during the tightening and loosening process, and avoid damage to the bakelite knob caused by improper use of tools during equipment maintenance, thereby increasing unnecessary maintenance cycle and cost;
[0028] Meanwhile, the tool can also install a matching number of sleeves 5 according to the number of fixed locks on the airborne equipment, ensuring that each lock can be loosened or tightened in one go and in a coordinated manner during the use of the tool. This greatly reduces the inconvenience and skill requirements of personnel caused by the traditional method of operating one by one, in small increments and in cycles. It also avoids the risk of product damage caused by stress concentration at a single point on the airborne equipment due to improper operation.
[0029] like Figure 2 and Figure 3 The handle 1 has trapezoidal grooves at both ends of the columnar rod at the lower end, which facilitates the screw head 2 to be screwed in and tightened.
[0030] The locking screw 2 has trapezoidal lugs at its ends, which facilitates easy manual disassembly and assembly without tools.
[0031] One end of the connecting rod 3 is a spherical structure with a through hole. The size of the through hole matches the columnar rod at the lower end of the handle 1, so that it can be fitted into the columnar rod of the handle.
[0032] The connecting rod 3 has a threaded hole at its top end, which facilitates the screw 2 to be screwed in and lock the connecting rod 3.
[0033] like Figure 2 and Figure 4 As shown, the end of the connecting rod 3 away from the spherical structure is a fork-shaped lug with a through hole on the side, and is fixed to the sleeve 5 by a pin 4. Its left view is shown below. Figure 4 .
[0034] The sleeve 5 has a bell-shaped structure with five notches on its cylindrical body. The size of the notches matches the plum blossom-shaped protrusions on the locking bakelite knob of the machine-mounted accessory, ensuring that it can reliably hold the bakelite knob. The size match ensures that the bakelite knob and the tool have a firm contact and even force during the tightening and loosening of the lock. Its top view is shown below. Figure 5 As shown.
[0035] The steps for loosening the adhesive in this invention are as follows, and are similar in principle to the tightening steps:
[0036] 1. First, select the number of fixing parts for sleeve 5 and connecting rod 3 according to the number of fixing latches for the airborne equipment that needs to be disassembled;
[0037] 2. Next, insert the sleeve 5 into the columnar rod at the lower end of the handle 1, and then place the sleeve 5 onto the bakelite knob of the onboard equipment fixing lock to determine the installation position of the sleeve 5 on the handle;
[0038] 3. Screw the locking screw 2 into the threaded hole at the top of the connecting rod 3 to press and fix the sleeve 5 onto the handle 1;
[0039] 4. Slowly turn handle 1 to loosen the bakelite knob, thereby releasing the onboard equipment fixing lock.
[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A bakelite knob-type locking and tightening tool, characterized in that: Includes a handle (1), two sets of connecting rods (3) connected to the handle (1) by two sets of locking screws (2), and two sets of sleeves (5) connected to the connecting rods (3) by two sets of pins (4); The handle (1) is an I-shaped structure; The bottom of the locking screw (2) is provided with a rubber pad (201).
2. A rubber knob type lock catch tensioning tool according to claim 1, characterized in that: The handle (1) has trapezoidal grooves at both ends of the columnar rod at the lower end.
3. A rubber knob type lock release tool according to claim 1, wherein: The locking screw (2) has a trapezoidal lug at the end.
4. A rubber knob type lock release tool according to claim 1, wherein: One end of the connecting rod (3) is a spherical structure with a through hole, and the size of the through hole matches the columnar rod at the lower end of the handle (1).
5. A rubber knob type lock catch tensioning tool according to claim 1, characterized in that: The connecting rod (3) has a threaded hole at its top, which facilitates the screw (2) to be screwed in and lock the connecting rod (3).
6. A rubber knob type lock release tool according to claim 4, wherein: The connecting rod (3) is a fork-shaped lug at the end away from the spherical structure, with a through hole on the side, and is fixed to the sleeve (5) by a pin (4).
7. A rubber knob type lock release tool according to claim 1, wherein: The sleeve (5) is bell-shaped with five notches on its cylindrical body. The size of the notches matches the plum blossom-shaped protrusions on the airborne accessory locking bakelite knob.