Bidirectional self-locking knob

Abstract

The utility model discloses a bidirectional self-locking knob, which is mounted on a panel and comprises a knob cap with a knob shaft, a clutch gear is sleeved on the knob shaft, a spring is sleeved on the outer sides of a gear shaft and the knob shaft, one tail end of the spring is abutted against the gear cap, the other tail end of the spring is abutted against the knob cap, a cylindrical boss is formed on the knob shaft in a protruding manner, and the knob shaft is sleeved on the cylindrical boss. A guide groove matched with the cylindrical boss is formed in the gear shaft, the clutch gear is installed on the panel, one tail end of the shaft sleeve penetrates through the panel, then extends into the clutch gear and is installed together with the rotary knob shaft, a shaft sleeve working end is formed at the other tail end of the shaft sleeve, and the shaft sleeve working end is located on the outer side of the panel. A key groove is concavely formed in the position, located on one side of the shaft sleeve working end, of the shaft sleeve, and a key matched with the key groove is formed on the inner side surface of the clutch gear. When the working end is stressed, the bidirectional self-locking knob can be freely adjusted and is self-locked after being adjusted, so that the knob is prevented from rotating due to reverse force application of the working end.

Description

Technical field:

[0001] The utility model relates to a two-way self-locking knob, which belongs to the technical field of refrigerators. Background technology:

[0002] Refrigerator adjustment knobs are often used to adjust certain parameters, and their working ends are generally free of force. However, in certain environments where force is applied to the working end (such as adjusting the height of glass shelves or panels), the force on the working end can cause the knob to rotate in the opposite direction. Furthermore, in some harsh environments with high-frequency vibrations, the knob can shift.

[0003] Therefore, it is necessary to improve the existing technology to solve the shortcomings of the existing technology. Utility model content:

[0004] The present invention aims to solve the problems existing in the prior art and provides a bidirectional self-locking knob, which can self-lock the operating end when the working end is subjected to force, thereby preventing the working end from rotating under force.

[0005] The utility model adopts the following technical solution: a two-way self-locking knob, which is installed on a panel, including a knob cap with a knob shaft, a clutch gear sleeved on the knob shaft, a spring sleeved on the outer side of the gear shaft and the knob shaft, one end of the spring abuts on the gear cap, and the other end abuts on the knob cap, a protrusion on the knob shaft is formed on a cylindrical boss, a guide groove is formed on the gear shaft and matched with the cylindrical boss, the clutch gear is installed on the panel, one end of the shaft sleeve passes through the panel and extends into the clutch gear and is installed together with the knob shaft, a shaft sleeve working end is formed on the other end of the shaft sleeve, the shaft sleeve working end is located on the outer side of the panel, a key slot is formed in a recessed position on the shaft sleeve on one side of the shaft sleeve working end, and a key matching the key slot is formed on the inner surface of the clutch gear.

[0006] Furthermore, the clutch gear includes a gear cap and a gear shaft connected to each other, and a through hole is formed on the gear cap and communicates with the inner space of the gear shaft.

[0007] Furthermore, a panel tooth groove is formed on the surface of the panel facing the clutch gear and is fitted with a gear cap, and a through hole is formed on the surface of the panel facing away from the clutch gear and is connected to the panel tooth groove, and the clutch gear is installed in the panel tooth groove.

[0008] Furthermore, the knob shaft on the knob cap passes through the gear shaft, the through hole and the through hole and then extends beyond the panel.

[0009] Furthermore, the knob shaft is stepped, comprising a first portion and a second portion, and a diameter of the second portion is smaller than a diameter of the first portion.

[0010] Furthermore, the sleeve is mounted on the second portion of the rotating shaft, and one end of the sleeve passes through the through hole, extends into the gear shaft after being pierced, and abuts against the first portion.

[0011] Furthermore, the second portion of the knob shaft is passed through the shaft sleeve and extends to the outside of the shaft sleeve.

[0012] Furthermore, the working end of the sleeve is a pulley or a gear.

[0013] Furthermore, the number of the cylindrical bosses is two.

[0014] The utility model has the following beneficial effects: the bidirectional self-locking knob of the utility model can be freely adjusted when the working end is subjected to force, and is self-locking after adjustment, thereby preventing the working end from applying reverse force to cause the knob to rotate. Description of the drawings:

[0015] Figure 1 This is an exploded schematic diagram of the bidirectional self-locking knob of the utility model.

[0016] Figure 2 This is another exploded schematic diagram of the bidirectional self-locking knob of the utility model.

[0017] Figure 3 This is a schematic diagram of the two-way self-locking knob of the utility model (with the spring hidden) in the free state.

[0018] Figure 4 This is a schematic diagram of the two-way self-locking knob of the utility model (with the spring hidden) when rotating. Specific implementation method:

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] The present invention's bidirectional, self-locking knob is mounted on a panel 4 and comprises a knob cap 1 with a knob shaft 10. A clutch gear 2 is sleeved onto the knob shaft 10. The clutch gear 2 comprises a connected gear cap 20 and a gear shaft 21. The gear cap 20 has a through-hole (not shown) that intersects the interior of the gear shaft 21. A spring 3 is sleeved around the outside of the gear shaft 21 and the knob shaft 10. One end of the spring 3 abuts the gear cap 20, and the other end abuts the knob cap 1.

[0021] The knob shaft 10 is stepped and comprises a first portion 100 and a second portion 101. The diameter of the second portion 101 is smaller than that of the first portion 100. The first portion 100 is formed with two spaced-apart cylindrical bosses 103. The gear shaft 21 is formed with a guide groove 210 that fits in with the cylindrical bosses 103.

[0022] The surface of the panel 4 facing the clutch gear 2 is recessed with a panel tooth groove 40 that mates with the gear cap 20. A through-hole 41 is formed on the surface of the panel 4 facing away from the clutch gear 2, intersecting the panel tooth groove 40. The clutch gear 2 is mounted within the panel tooth groove 40. The spring 3 is sleeved onto the knob shaft 10. The knob shaft 10 on the knob cap 1 passes through the gear shaft 21, the through-hole, and the through-hole 41, extending beyond the panel 4. The cylinder 103 is now mounted within the guide groove 210 and can move along it.

[0023] A sleeve 5 is mounted on the second portion 101 of the rotating shaft 10. One end of the sleeve 5 passes through the through-hole 41, extends into the gear shaft 21, and abuts against the first portion 100. The other end of the sleeve 5 forms a sleeve working end 50, which can be a pulley or gear, depending on the actual needs. The second portion 101 of the knob shaft 10 is inserted behind the sleeve 5 and extends to the outside of the sleeve 5.

[0024] A keyway 51 is formed on the shaft sleeve 5 at a position on one side of the shaft sleeve working end 50 , and a key 22 is formed on the inner surface of the clutch gear 2 to match the keyway 51 .

[0025] The bidirectional self-locking knob of the present invention operates as follows: In the free state, due to the action of the spring 3, the clutch gear 2 engages with the panel tooth groove 40 on the panel 4, and the clutch gear 2 cannot rotate. When the knob is turned, the cylindrical boss 103 on the knob shaft 10, under the action of the guide groove 210 of the clutch gear 2, moves the clutch gear 2 axially toward one end of the knob cap 1, and the clutch gear 2 disengages from the panel tooth groove 40 on the panel 4. At this time, the rotation of the knob drives the clutch gear 2 to rotate, and the rotation of the clutch gear 2 drives the shaft sleeve 5 to rotate. The rotation of the shaft sleeve 5 means that the shaft sleeve working end 50 is also rotating. When the knob is rotated, the force received by the shaft sleeve working end 50 may be in two situations: one is a force opposite to the direction of rotation, and the other is a force in the same direction as the rotation. When the force applied to the sleeve working end 50 is in the same direction as the rotation, the sleeve 5 drives the clutch gear 2 in the direction of rotation, possibly faster than the hand's rotation. At this point, the centrifugal gear 2, under the action of the guide groove 210 and the spring 3, snaps back into the panel tooth groove 40, locking the sleeve 5. Therefore, when the force applied to the sleeve working end 50 is in the same direction as the rotation, the clutch gear 2 switches back and forth between locked and unlocked states, resulting in a clicky shifting sensation. When the hand is released, the clutch gear 2, under the action of the spring 3, pushes into the panel tooth groove 40 of the panel 4, locking the clutch gear 2 and stopping the sleeve 5 from rotating.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principles of the present invention. These improvements should also be regarded as the scope of protection of the present invention.

Claims

1. A two-way self-locking knob, mounted on a panel (4), characterized in that: The invention comprises a gear shaft (21), a shaft sleeve (5) and a knob cap (1) with a knob shaft (10), wherein the knob shaft (10) is sleeved with a clutch gear (2), and the outer sides of the gear shaft (21) and the knob shaft (10) are sleeved with a spring (3), one end of the spring (3) abuts against the gear cap (20), and the other end abuts against the knob cap (1), a protrusion is formed on the knob shaft (10) on a cylindrical boss (103), and a guide groove (21) is formed on the gear shaft (21) and is mounted and matched with the cylindrical boss (103). 0), the clutch gear (2) is mounted on the panel (4), one end of the shaft sleeve (5) passes through the panel (4) and extends into the clutch gear (2) and is mounted together with the knob shaft (10), the other end of the shaft sleeve (5) is formed with a shaft sleeve working end (50), the shaft sleeve working end (50) is located on the outside of the panel (4), a keyway (51) is formed in a recessed position on one side of the shaft sleeve working end (50) on the shaft sleeve (5), and a key (22) that matches the keyway (51) is formed on the inner surface of the clutch gear (2).

2. The two-way self-locking knob according to claim 1, characterized in that: The clutch gear (2) comprises a connected gear cap (20) and a gear shaft (21); a through hole is formed on the gear cap (20) and is in communication with the internal space of the gear shaft (21).

3. The two-way self-locking knob according to claim 2, characterized in that: A panel tooth groove (40) is formed on the surface of the panel (4) facing the clutch gear (2) and is fitted with the gear cap (20). A through hole (41) is formed on the surface of the panel (4) facing away from the clutch gear (2) and is communicated with the panel tooth groove (40). The clutch gear (2) is installed in the panel tooth groove (40).

4. The two-way self-locking knob according to claim 3, characterized in that: The knob shaft (10) on the knob cap (1) is passed through the gear shaft (21), the through hole and the through hole (41) and then extends beyond the panel (4).

5. The two-way self-locking knob according to claim 4, characterized in that: The knob shaft (10) is stepped and comprises a first portion (100) and a second portion (101), wherein the diameter of the second portion (101) is smaller than the diameter of the first portion (100).

6. The two-way self-locking knob according to claim 5, characterized in that: The shaft sleeve (5) is mounted on the second portion (101) of the knob shaft (10), and one end of the shaft sleeve (5) passes through the through hole (41), extends into the gear shaft (21) after being pierced, and abuts against the first portion (100).

7. The two-way self-locking knob according to claim 6, characterized in that: The second portion (101) of the knob shaft (10) is passed through the shaft sleeve (5) and extends to the outside of the shaft sleeve (5).

8. The two-way self-locking knob according to claim 1, characterized in that: The shaft sleeve working end (50) is a pulley or a gear.

9. The two-way self-locking knob according to claim 1, characterized in that: The number of the cylindrical bosses (103) is two.

Images