Seat expansion support door structure
By setting a spiral guide post and a magnet on the bolt body, the bolt is rotated by the attraction or repulsion of the magnet, which solves the problem of easy mis-locking in traditional unlocking methods and achieves anti-misoperation and simplified design.
Patent Information
- Application Number
- CN202520067570.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-01-13
AI Technical Summary
Traditional magnetic attraction unlocking methods are susceptible to mis-locking due to external magnetic fields, and their complex design poses safety hazards.
The locking tongue body is spirally mounted on a spiral guide post, and the locking tongue rotates due to the attraction or repulsion of a magnet. The design of the spiral guide post and the locking tongue rod enables the locking tongue to be unlocked and locked.
It prevents accidental locking, reduces scratching between the lock tongue and the door, has a simple structure, uses few parts, is easy to assemble, and avoids misoperation.
Smart Images
Figure CN223618676U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle technology, specifically to a seat extension bracket door structure. Background Technology
[0002] In the automotive industry, the design of entertainment screen interfaces has always been a crucial consideration. These interfaces not only need to provide a stable connection but also ensure that users can easily insert and remove entertainment devices. Traditional entertainment screen interface designs often employ the principle of magnetic attraction, using the magnetic attraction to move the latch up and down, thereby locking and unlocking the interface. This design approach, to some extent, meets user needs because it provides a simple and intuitive unlocking method.
[0003] However, with continuous technological advancements and increasingly diverse user needs, this traditional unlocking method has revealed some limitations. First, the magnetic attraction method can be affected by external magnetic fields, leading to unlocking failure or mis-locking. This can cause inconvenience to users and even pose security risks in some cases. Second, this unlocking method may involve certain complexities in design and manufacturing. Therefore, a method is proposed that uses the attraction or repulsion of opposite magnetic poles, combined with a helical mechanism, to rotate the bolt and unlock, thus preventing mis-locking. Utility Model Content
[0004] To solve the above technical problems, this utility model provides a seat extension bracket door structure that can prevent accidental locking.
[0005] The technical solution is as follows: A seat extension bracket door structure includes a bracket door base and a bracket door body. The upper part of the bracket door body is hinged to the bracket door base. The key features are: a latch body is provided on the bracket door body; a spiral guide post is provided in the middle of the bracket door body; the middle part of the latch body is spirally fitted onto the spiral guide post; magnets are arranged side-by-side on the left and right sides of the middle part of the latch body; the latch body can move back and forth and rotate on the spiral guide post under the action of the magnets; a latch rod is provided on the latch body below the magnets; the latch rod can engage in a retaining groove of the bracket door base. With this structure, the middle part of the latch body is spirally fitted onto the spiral guide post of the bracket door body, and the lower latch rod engages in the retaining groove to achieve locking. When the magnet on the latch body moves on the spiral guide post under the attraction or repulsion of an external magnet, and rotates around the spiral guide post, the latch rod rotates out of the retaining groove, thereby unlocking.
[0006] Preferably, the spiral guide post has a hollow internal structure and an axial spiral surface. The spiral surface is located near the side of the support door body, and a spiral line is formed in the middle of the latch body corresponding to the spiral guide post. With this structure, the spiral line in the middle of the latch body and the spiral guide post in the middle of the support door body can be connected, allowing the latch body to move on the spiral guide post under external force.
[0007] Preferably, the end of the spiral guide post away from the bracket door body extends beyond the latch body, and a screw is provided on the extended end. The screw shank extends into the spiral guide post, and the diameter of the screw head is larger than the diameter of the central channel of the latch body. With this structure, the screw can connect the latch body and the bracket door body, and can restrict the movement of the latch body on the spiral guide post, preventing the latch body from falling off the spiral guide post during use.
[0008] Preferably, the retaining groove is an inverted "L" shape, and the locking bolt can be engaged in the retaining groove. The length of the retaining groove is greater than the horizontal cross-sectional length of the locking bolt. With this structure, the locking bolt body moves along the spiral guide post under external force, thereby driving the locking bolt at the lower part of the locking bolt body to move within the retaining groove, thus achieving unlocking.
[0009] Preferably, the support door base is a ring-shaped frame structure. The support door body is installed inside the support door base and can cover the middle of the support door base. Two body lugs are arranged side-by-side on the upper part of the support door body. A base lug is provided on the inner sidewall of the upper part of the support door base corresponding to the body lugs. The same upper rotating shaft passes through the corresponding body lugs and base lugs on the same side. With this structure, the support door body and the support door base can be connected by the upper rotating shaft, and the support door body can rotate forward around the upper rotating shaft.
[0010] Preferably, a torsion spring is fitted onto each of the two upper rotating shafts, with one end of the torsion spring resting against the bracket door base and the other end resting against the bracket door body. With this structure, after unlocking, the bracket door body and the latch body can rotate in the opposite direction under the action of the torsion spring to reset.
[0011] Preferably, magnet mounting cavities are arranged side-by-side on both sides of the central channel of the latch body, and magnets are installed in both of the magnet mounting cavities. With the above structure, the magnets are mounted in the latch body through the magnet mounting cavities. When an external magnet approaches, a force is generated, which drives the latch body to move.
[0012] Preferably, a protruding first cylinder is provided on the outer side of the magnet of the latch body, and a second cylinder is provided on the upper part of the support door body corresponding to the first cylinder. A compression spring is provided between the latch body and the support door body, with one end of the compression spring fitted onto the first cylinder and the other end fitted onto the second cylinder. With the above structure, when locking is required, the latch body can return to its original position under the action of the compression spring to lock.
[0013] Compared with the prior art, the advantages of this utility model are: simple structure, fewer parts, convenient assembly, the magnet inside the lock tongue body can rotate around the spiral guide post under the attraction or repulsion of the unlocking magnet of the unlocking bracket, thereby expanding the door unlocking bracket, preventing scratches, reducing the number of times the unlocking bracket and the door are scratched, and the lock tongue will not rotate when metal parts are close to the door, preventing accidental locking and preventing misoperation. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 for Figure 1 A bottom view;
[0016] Figure 3 This is an exploded view of the present invention;
[0017] Figure 4 This is a schematic diagram illustrating the use of the opposite-shaped magnet unlocking bracket of this utility model;
[0018] Figure 5 for Figure 4 A schematic diagram of the main body 2 of the central support frame;
[0019] Figure 6 This is a schematic diagram illustrating the use of the same-pole magnet unlocking bracket of this utility model;
[0020] Figure 7 for Figure 6 A schematic diagram of the main body 2 of the central support door. Detailed Implementation
[0021] The present invention will be further described below with reference to the embodiments and accompanying drawings.
[0022] like Figure 1 , Figure 2 and Figure 3As shown, a seat extension bracket door structure includes a bracket door base 1 and a bracket door body 2. The upper part of the bracket door body 2 is hinged to the bracket door base 1. A latch body 3 is provided on the bracket door body 2. A spiral guide post 201 is provided in the middle of the bracket door body 2. The middle part of the latch body 3 is spirally fitted onto the spiral guide post 201. Magnets 301 are arranged side by side on the left and right sides of the middle part of the latch body 3. The latch body 3 can move back and forth and rotate on the spiral guide post 201 under the action of the magnets 301. A latch rod 302 is provided on the latch body 3 below the magnets 301. The latch rod 302 can be engaged in the retaining groove 101 of the bracket door base 1.
[0023] The spiral guide post 201 has a hollow structure inside and a spiral surface along its axial direction. The spiral surface is located on the side of the support door body 2. The middle part of the latch body 3 is provided with a spiral line corresponding to the spiral guide post 201. The latch body 3 can rotate around the spiral guide post 201 under the action of external force.
[0024] The spiral guide post 201 extends from the end of the latch body 3 away from the bracket door body 2. A screw 4 is provided on the extended end. The screw 4 extends into the spiral guide post 201. The diameter of the head of the screw 4 is larger than the diameter of the middle channel of the latch body 3, which can restrict the latch body 3 to the spiral guide post 201 and prevent the latch body from falling off the spiral guide post during use.
[0025] The retaining groove 101 has an inverted "L" shape structure. The locking tongue rod 302 can be inserted into the retaining groove 101. The length of the retaining groove 101 is greater than the horizontal cross-sectional length of the locking tongue rod 302. The locking tongue rod 302 can move back and forth within the retaining groove 101.
[0026] The bracket door base 1 is a ring frame structure. The bracket door body 2 is installed inside the bracket door base 1 and can cover the middle of the bracket door base 1. Two body ears 203 are arranged side by side on the upper part of the bracket door body 2. The upper inner side wall of the bracket door base 1 is provided with a base ear 102 corresponding to the body ears 203. The same upper rotating shaft 5 is inserted into the corresponding body ears 203 and base ears 102 on the same side. A torsion spring 6 is sleeved on both upper rotating shafts 5. One end of the torsion spring 6 rests on the bracket door base 1 and the other end rests on the bracket door body 2. After unlocking, the bracket door body 2 can be rotated backward by the action of the torsion spring 8 to reset it.
[0027] Magnet mounting cavities 303 are arranged side by side on the left and right sides of the central channel of the latch body 3. Magnets 301 are installed in both of the magnet mounting cavities 303. A protruding first cylinder 304 is provided on the outer side of the magnets 301 of the latch body 3. A second cylinder 202 is provided on the upper part of the bracket door body 2 corresponding to the first cylinder 304. A compression spring 7 is provided between the latch body 3 and the bracket door body 2. One end of the compression spring 7 is fitted on the first cylinder 304 and the other end is fitted on the second cylinder 202. The compression spring 7 can reset the latch body 3.
[0028] This invention is applicable to two different unlocking methods, corresponding to magnetic attraction or magnetic repulsion respectively.
[0029] Example 1: Magnetic attraction
[0030] like Figure 4 and Figure 5 As shown, an unlocking bracket 8 is provided on the outside of the bracket door base 1. Inside the unlocking bracket 8, two unlocking magnets are provided corresponding to the magnet 301. The unlocking magnets have opposite magnetic properties to the magnet 302. When viewed from bottom to top, the spiral guide post 201 of the bracket door body 2 has a spiral surface arranged clockwise. The middle part of the latch body 3 is provided with a spiral line corresponding to its spiral guide post 201. The latch body 3 and the spiral guide post 201 of the bracket door body 2 are connected by the spiral line and the spiral surface.
[0031] When the unlocking bracket 8 approaches the bracket door base 1, the unlocking magnet can generate a force F in the direction of the unlocking magnet on the magnet 301 on the inner lock tongue body 3. The lock tongue body 3 will generate a component force F1 that rotates around the spiral guide post 201, causing the lock tongue body 3 to move forward and rotate counterclockwise. The slot of the stop groove 101 faces to the right, thus rotating out of the stop groove 101 to unlock. After unlocking, under the action of the compression spring 7 and the torsion spring 6, the lock tongue body 3 is driven back to its original position to lock.
[0032] Example 2: Magnetic repulsion
[0033] like Figure 6 and Figure 7 As shown, an unlocking magnet is provided inside the unlocking bracket 8 corresponding to the magnet 301. The unlocking magnet has the same magnetism as the magnet 302. When viewed from bottom to top, the spiral guide post 201 of the bracket door body 2 has a spiral surface arranged counterclockwise. The middle part of the latch body 3 is provided with a spiral line corresponding to its spiral guide post 201. The latch body 3 and the spiral guide post 201 of the bracket door body 2 are connected by the spiral line and the spiral surface.
[0034] When the unlocking bracket 8 approaches the bracket door base 1, the unlocking magnet can generate a force F` away from the unlocking magnet on the magnet 301 on the inner lock tongue body 3. The lock tongue body 3 will generate a component force F1` that rotates around the spiral guide post 201. When the lock tongue body 3 moves backward and rotates counterclockwise, the slot of the stop groove 101 faces to the right, thus turning out of the stop groove 101 to unlock. After unlocking, under the action of the compression spring 7 and the torsion spring 6, the lock tongue body 3 is driven back to its original position to lock.
[0035] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.
Claims
1. A seat extension bracket door structure, comprising a bracket door base (1) and a bracket door body (2), wherein the upper part of the bracket door body (2) is hinged to the bracket door base (1), characterized in that: A latch body (3) is provided on the bracket door body (2). A spiral guide post (201) is provided in the middle of the bracket door body (2). The middle part of the latch body (3) is spirally fitted onto the spiral guide post (201). Magnets (301) are arranged side by side on the left and right sides of the middle part of the latch body (3). The latch body (3) can move back and forth and rotate on the spiral guide post (201) under the action of the magnets (301). A latch rod (302) is provided on the latch body (3) below the magnets (301). The latch rod (302) can be inserted into the retaining groove (101) of the bracket door base (1).
2. The seat extension bracket door structure according to claim 1, characterized in that: The spiral guide post (201) has a hollow structure inside. The spiral guide post (201) has a spiral surface in the axial direction. The spiral surface is close to the side of the bracket door body (2). The middle part of the latch body (3) is provided with a spiral line corresponding to the spiral guide post (201).
3. The seat extension bracket door structure according to claim 2, characterized in that: The spiral guide post (201) extends out of the latch body (3) at one end away from the bracket door body (2). A screw (4) is provided on the extended end. The screw (4) extends into the spiral guide post (201). The head diameter of the screw (4) is larger than the diameter of the middle channel of the latch body (3).
4. The seat extension bracket door structure according to claim 1, characterized in that: The retaining groove (101) has an inverted "L" shape structure, and the locking tongue rod (302) can be inserted into the retaining groove (101). The length of the retaining groove (101) is greater than the horizontal cross-sectional length of the locking tongue rod (302).
5. The seat extension bracket door structure according to claim 1, characterized in that: The bracket door base (1) is a ring frame structure. The bracket door body (2) is installed inside the bracket door base (1) and can cover the middle part of the bracket door base (1). Two body ears (203) are arranged side by side on the upper part of the bracket door body (2). The upper inner side wall of the bracket door base (1) is provided with a base ear (102) corresponding to the body ear (203). The same upper rotating shaft (5) is inserted in the corresponding body ear (203) and base ear (102) on the same side.
6. The seat extension bracket door structure according to claim 5, characterized in that: A torsion spring (6) is fitted on each of the two upper rotating shafts (5). One end of the torsion spring (6) rests on the bracket door base (1), and the other end rests on the bracket door body (2).
7. A seat extension bracket door structure according to claim 2, characterized in that: Magnet mounting cavities (303) are arranged side by side on the left and right sides of the middle part of the latch body (3), and magnets (301) are installed in both of the magnet mounting cavities (303).
8. The seat extension bracket door structure according to claim 7, characterized in that: A protruding first cylinder (304) is provided on the outer side of the magnet (301) of the latch body (3). A second cylinder (202) is provided on the upper part of the bracket door body (2) corresponding to the first cylinder (304). A compression spring (7) is provided between the latch body (3) and the bracket door body (2). One end of the compression spring (7) is fitted on the first cylinder (304), and the other end is fitted on the second cylinder (202).