A flush quick release lock connector

Abstract

The utility model relates to a kind of quick-release lock connecting pieces of countersunk head type including upper lock body and lower lock body, and upper lock body includes lock pin, spring, lock cover and pin, lock pin one end is equipped with the radial through pinhole, spring is sleeved on lock pin, lock cover is equipped with the cavity accommodating lock pin and spring, lock pin bottom end extends into cavity, the inner wall of the tight lock section of lower lock body is equipped with the helical slope matched with the circumferential movement track of pin, when installing, after pin is inserted into pinhole at through slot, only need to rotate lock pin, pin slides along helical slope, helical slope provides the path of rotation guide to pin, simplify tight lock action into single rotation action, so that it is more labor-saving when installing, reduce the operation difficulty, improve installation efficiency, pin is clamped into locking recess after rotating in place, realize locking under the pre-tightening force provided by spring compression, ensure the stability of connection, simplify operation process, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sandwich quick-release connection technology, and in particular to a countersunk quick-release lock connector. Background Technology

[0002] In fields such as aviation and automobiles where panels or covers need to be frequently disassembled and reassembled, quick-release locks are widely used because of their smooth surface after installation and convenient operation. Existing quick-release locks of this type usually use spring preload and slot cooperation to lock and release, but in actual operation, users need to press and rotate the lock pin to make the pin at the bottom of the lock pin engage with the specific slot to complete the installation, resulting in low installation efficiency.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model discloses a countersunk quick-release lock connector to solve the problem of low installation efficiency caused by the need to press and rotate the lock pin to engage the pin at the bottom of the lock pin in a specific slot.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A countersunk quick-release lock connector, characterized in that it comprises:

[0007] The locking body includes a locking pin, a spring, a locking cover, and a pin; one end of the locking pin has a radially penetrating pin hole; the spring is sleeved on the locking pin; the locking cover has a cavity for accommodating the locking pin and the spring, the bottom end of the locking pin extends into the cavity, and the pin passes through the pin hole and both ends extend out of the locking pin;

[0008] The lower locking body has its top end connected to the bottom end of the interlayer plate. The lower locking body has an axial through-hole. The locking cover penetrates the interlayer plate and partially extends into the first through-hole. The bottom end of the first through-hole has a locking section. The left and right sides of the locking section have axial through grooves. The front and rear sides of the locking section have locking grooves that can engage the two ends of the pin. The inner wall of the locking section has a spiral inclined surface that matches the circumferential movement trajectory of the pin. The end of the spiral inclined surface near the interlayer plate is connected to the through groove, and the end of the spiral inclined surface away from the interlayer plate is connected to the locking groove.

[0009] In this process, the rotating pin slides from the through groove along the spiral inclined surface to the locking groove, the spring is compressed, and the pin is engaged in the locking groove.

[0010] A further technical solution is that the bottom of the locking groove has an arc-shaped recess, and part of the pin is inserted into the recess.

[0011] A further technical solution is that a second through hole is provided in the sandwich panel, and a funnel-shaped countersunk hole with an upward opening is provided at the top of the second through hole. A funnel-shaped annular portion with an upward opening is provided on the outer side of the top of the lock cover, which matches the countersunk hole. The lock cover is fixed in the second through hole, and the outer side of the annular portion is attached to the inner side of the countersunk hole.

[0012] A further technical solution is that the bottom end of the head of the locking pin is provided with an annular outer edge that matches the inner side of the annular portion, and the annular outer edge can fit into the inner side of the annular portion.

[0013] A further technical solution is that the bottom end of the head of the locking pin is provided with a clamping part, the outer diameter of the clamping part is larger than the inner diameter of the spring, and the top end of the spring abuts against the top end of the clamping part.

[0014] A further technical solution is that a third through hole is provided at the bottom end of the lock cover. The inner diameter of the third through hole is larger than the outer diameter of the lock pin and smaller than the outer diameter of the spring. The top end of the lock pin passes through the third through hole. A blocking part is formed on the inner wall of the bottom end of the lock cover. The top end of the blocking part abuts against the bottom end of the spring.

[0015] A further technical solution is that a stop washer is fitted on the outer wall of the lock cover, the interlayer plate includes an upper plate and a lower plate, the stop washer is located between the upper plate and the lower plate, and a groove is provided at the top of the lower plate to accommodate the stop washer.

[0016] A further technical solution is that the left and right sides of the top of the lower lock body are riveted to the bottom of the lower interlayer plate.

[0017] The beneficial effects of this utility model embodiment are as follows:

[0018] (i) A countersunk quick-release lock connector includes an upper lock body and a lower lock body. The upper lock body includes a locking pin, a spring, a lock cover, and a pin. One end of the locking pin has a radially penetrating pin hole. The spring is sleeved on the locking pin. The lock cover has a cavity for accommodating the locking pin and the spring. The bottom end of the locking pin extends into the cavity. The inner wall of the locking section of the lower lock body has a spiral inclined surface that matches the circumferential movement trajectory of the pin. During installation, after inserting the pin into the pin hole at the through slot, only the locking pin needs to be rotated. The pin slides along the spiral inclined surface. The spiral inclined surface provides a rotational guide path for the pin, simplifying the locking action into a single rotational action. This makes installation easier, reduces the difficulty of operation, and improves installation efficiency. After the pin is rotated into place, it is engaged in the locking groove and locked under the preload provided by the spring compression, ensuring the stability of the connection, simplifying the operation process, and improving work efficiency.

[0019] (ii) Furthermore, the bottom of the locking groove is provided with an arc-shaped recess, into which part of the pin is engaged. When the pin is engaged in the locking groove, the cylindrical surface of the pin can be partially embedded and tightly fitted into the arc surface of the recess, increasing the effective contact area between the pin and the groove. This not only improves the stability of the locking and prevents the pin from fretting or axially moving under vibration, but also enhances the reliability and anti-loosening ability of the locking state.

[0020] (iii) Furthermore, a locking washer is fitted on the outer wall of the lock cover. The interlayer plate includes an upper plate and a lower plate, with the locking washer located between the upper plate and the lower plate. A groove for accommodating the locking washer is opened at the top of the lower plate. The locking washer fitted on the outer wall of the lock cover is accommodated in the groove opened at the top of the lower plate and is clamped between the bottom surface of the upper plate and the top of the groove of the lower plate, preventing the lock cover from coming out of the second through hole of the interlayer plate in a non-disassembled state. This ensures the stable pre-installation of the upper lock body on the interlayer plate without affecting normal locking and disassembly operations. Attached Figure Description

[0021] Figure 1 This is a front view structural diagram of the upper lock body in a countersunk quick-release lock connector of this utility model.

[0022] Figure 2 This is a bottom view of the lower lock body in a countersunk quick-release lock connector according to this utility model.

[0023] Figure 3 This is a side view of the lower lock body in a countersunk quick-release lock connector according to the present invention.

[0024] Figure 4 This is a front view structural diagram of the lower lock body in a countersunk quick-release lock connector of this utility model.

[0025] Figure 5This is a schematic diagram of the pre-installation structure of a countersunk quick-release lock connector according to the present invention.

[0026] Figure 6 This is a schematic diagram of the locking structure of a countersunk quick-release lock connector according to the present invention.

[0027] In the picture:

[0028] 100. Upper locking body; 110. Locking pin; 111. Annular outer edge; 112. Tightening part; 120. Spring; 130. Lock cover; 131. Cavity; 132. Annular part; 133. Third through hole; 134. Blocking part; 140. Pin; 200. Lower locking body; 201. First through hole; 202. Tightening section; 203. Through groove; 204. Locking groove; 205. Spiral inclined surface; 206. Recess; 300. Interlayer plate; 301. Second through hole; 302. Countersunk hole; 310. Upper plate; 320. Lower plate; 400. Stop washer. Detailed Implementation

[0029] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0030] First embodiment:

[0031] A countersunk quick-release lock connector includes an upper locking body 100 and a lower locking body 200.

[0032] like Figures 1-6 As shown, the upper lock body 100 includes a locking pin 110, a spring 120, a lock cover 130, and a pin 140. One end of the locking pin 110 has a radially penetrating pin hole. The spring 120 is sleeved on the locking pin 110. For example, the bottom end of the pin head of the locking pin 110 has a retaining portion 112, the outer diameter of which is larger than the inner diameter of the spring 120, and the top end of the spring 120 abuts against the top end of the retaining portion 112. The bottom end of the lock cover 130 has a third through hole 133, the inner diameter of which is larger than the outer diameter of the locking pin 110 and smaller than the outer diameter of the spring 120, the top end of the locking pin 110 passes through the third through hole 133, and the inner wall of the bottom end of the lock cover 130 forms a blocking portion 134, the top end of which abuts against the bottom end of the spring 120. The lock cover 130 has a cavity 131 inside to accommodate the lock pin 110 and the spring 120. The bottom end of the lock pin 110 extends into the cavity 131, and the pin 140 passes through the pin hole and extends out of the lock pin 110 at both ends.

[0033] like Figures 1-6As shown, the top end of the lower lock body 200 is connected to the bottom end of the interlayer plate 300. For example, the left and right sides of the top end of the lower lock body 200 are riveted to the bottom end of the lower interlayer plate 300. The lower lock body 200 has an axially extending first through hole 201, and the lock cover 130 penetrates the interlayer plate 300 and partially extends into the first through hole 201. The bottom end of the first through hole 201 has a locking section 202. The left and right sides of the locking section 202 have axial through grooves 203, and the front and rear sides of the locking section 202 have locking grooves 204 that can engage the two ends of the pin 140. The inner wall of the locking section 202 has a spiral inclined surface 205 that matches the circumferential movement trajectory of the pin 140. The end of the spiral inclined surface 205 near the interlayer plate 300 connects to the through groove 203, and the end of the spiral inclined surface 205 away from the interlayer plate 300 connects to the locking groove 204.

[0034] In this process, the rotating pin 140 slides from the through groove 203 along the spiral inclined surface 205 to the locking groove 204, the spring 120 is compressed, and the pin 140 is engaged in the locking groove 204.

[0035] like Figures 2-4 As shown, the bottom of the locking groove 204 is provided with an arc-shaped recess 206, and part of the pin 140 is inserted into the recess 206. When the pin 140 is inserted into the locking groove 204, the cylindrical surface of the pin 140 can be partially embedded and tightly fitted into the arc surface of the recess 206, increasing the effective contact area between the pin 140 and the groove. This not only improves the stability of locking and prevents the pin 140 from fretting or axially moving under vibration, but also enhances the reliability and anti-loosening ability of the locking state.

[0036] like Figures 5-6 As shown, further, the sandwich panel 300 has a through second through hole 301, and the top of the second through hole 301 has an upward-opening trumpet-shaped countersunk hole 302. The top outer side of the lock cover 130 has an upward-opening trumpet-shaped annular portion 132 that matches the countersunk hole 302. The lock cover 130 is fixed inside the second through hole 301, and the outer side of the annular portion 132 fits against the inner side of the countersunk hole 302. For example, the bottom end of the head of the locking pin 110 has an annular outer edge 111 that matches the inner side of the annular portion 132. The annular outer edge 111 can fit against the inner side of the annular portion 132. The trumpet-shaped annular portion 132 at the top of the lock cover 130 fits tightly against the inner side of the countersunk hole 302 of the sandwich panel 300, achieving a flat surface and providing radial support. This structure is a countersunk structure type, generally used in aircraft hatches, access doors, maintenance ports, etc. During installation, the lock cover 130 must not protrude from the surface.

[0037] like Figures 5-6As shown, further, a stop washer 400 is fitted on the outer wall of the lock cover 130. The interlayer plate 300 includes an upper plate 310 and a lower plate 320. The stop washer 400 is located between the upper plate 310 and the lower plate 320. The top of the lower plate 320 has a groove to accommodate the stop washer 400. The stop washer 400 fitted on the outer wall of the lock cover 130 is accommodated in the groove at the top of the lower plate 320 and is clamped between the bottom surface of the upper plate 310 and the top of the groove of the lower plate 320. This prevents the lock cover 130 from coming out of the second through hole 301 of the interlayer plate 300 in a non-disassembled state, ensuring the secure pre-installation of the upper lock body 100 on the interlayer plate 300, while not affecting normal locking and disassembly operations.

[0038] In operation, this embodiment is as follows:

[0039] During installation, the upper lock body 100 is pre-installed in the second through hole 301 of the interlayer plate 300. The trumpet-shaped annular portion 132 at the top of the lock cover 130 fits into the trumpet-shaped countersunk hole 302 at the top of the second through hole 301 to achieve countersunk fixation. The annular outer edge 111 at the bottom of the head of the lock pin 110 fits into the inner side of the annular portion 132. The locking washer 400 sleeved on the outer wall of the lock cover 130 is located between the upper plate 310 and the lower plate 320 of the interlayer plate 300 and is accommodated in the groove at the top of the lower plate 320 to prevent the lock cover 130 from moving. The top of the lower lock body 200 is riveted to the bottom of the lower interlayer plate 300. The lock cover 130 extends into the first through hole 201 of the lower lock body 200. The pin 140 is inserted into the pin hole at the bottom of the lock pin 110 through the through grooves 203 on the left and right sides of the locking section 202. Then, using a tool, rotate the locking pin 110. The two ends of the pin 140 contact and slide downward along the spiral inclined surface 205 on the inner wall of the locking section 202 and rotate. During this process, the axial movement of the locking pin 110 relative to the lock cover 130 further compresses the spring 120, generating an axial preload. When the pin 140 rotates to the bottom of the spiral inclined surface 205, under the action of the axial restoring force of the spring 120, the two ends of the pin 140 are inserted into the recesses 206 in the locking grooves 204 on both sides of the locking section 202 to achieve a stable lock. When disassembling, rotate the locking pin 110 counterclockwise. The two ends of the pin 140 overcome part of the pressure of the spring 120 and disengage from the locking groove 204. Slide upward along the spiral inclined surface 205 and rotate back to the position of the through groove 203. Then, the upper lock body 100 can be lifted upward to achieve quick separation.

[0040] In this embodiment, the spiral inclined surface 205 provides a rotational guide path for the pin 140, simplifying the locking action into a single rotational action. This makes installation easier, reduces operational difficulty, and improves installation efficiency. After the pin 140 is rotated into position, it engages with the locking groove 204 and is locked under the pre-tightening force provided by the spring 120, ensuring the stability of the connection, simplifying the operation process, and improving work efficiency.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A countersunk quick-release lock connector, characterized in that, include: The locking body includes a locking pin, a spring, a locking cover, and a pin; the spring is sleeved on the locking pin; the locking cover has a cavity for accommodating the locking pin and the spring, the bottom end of the locking pin extends into the cavity, and the pin passes through the bottom end of the locking pin and extends out of the locking pin at both ends; The lower locking body has its top end connected to the bottom end of the interlayer plate. The lower locking body has an axial through-hole. The locking cover penetrates the interlayer plate and partially extends into the first through-hole. The bottom end of the first through-hole has a locking section. The left and right sides of the locking section have axial through grooves. The front and rear sides of the locking section have locking grooves that can engage the two ends of the pin. The inner wall of the locking section has a spiral inclined surface that matches the circumferential movement trajectory of the pin. The end of the spiral inclined surface near the interlayer plate is connected to the through groove, and the end of the spiral inclined surface away from the interlayer plate is connected to the locking groove. In this process, the rotating pin slides from the through groove along the spiral inclined surface to the locking groove, the spring is compressed, and the pin is engaged in the locking groove.

2. The countersunk quick-release lock connector according to claim 1, characterized in that: The bottom of the locking groove has an arc-shaped recess, and part of the pin is inserted into the recess.

3. The countersunk quick-release lock connector according to claim 1, characterized in that: The interlayer plate has a through second hole, and the top of the second through hole has a funnel-shaped countersunk hole with an upward opening. The top outer side of the lock cover has a funnel-shaped annular portion with an upward opening that matches the countersunk hole. The lock cover is fixed in the second through hole, and the outer side of the annular portion fits against the inner side of the countersunk hole.

4. The countersunk quick-release lock connector according to claim 3, characterized in that: The bottom end of the head of the locking pin is provided with an outer ring that matches the inner side of the annular portion, and the outer ring can fit against the inner side of the annular portion.

5. The countersunk quick-release lock connector according to claim 1, characterized in that: The bottom end of the head of the locking pin is provided with a clamping part, the outer diameter of the clamping part is larger than the inner diameter of the spring, and the top end of the spring abuts against the top end of the clamping part.

6. The countersunk quick-release lock connector according to claim 1, characterized in that: The bottom end of the lock cover has a third through hole. The inner diameter of the third through hole is larger than the outer diameter of the lock pin and smaller than the outer diameter of the spring. The top end of the lock pin passes through the third through hole. The inner wall of the bottom end of the lock cover forms a blocking part, and the top end of the blocking part abuts against the bottom end of the spring.

7. The countersunk quick-release lock connector according to claim 1, characterized in that: The outer wall of the lock cover is fitted with a stop washer, the interlayer plate includes an upper plate and a lower plate, the stop washer is located between the upper plate and the lower plate, and the top of the lower plate has a groove that can accommodate the stop washer.

8. The countersunk quick-release lock connector according to claim 7, characterized in that: The left and right sides of the top of the lower lock body are riveted to the bottom of the lower interlayer plate.

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