High-precision locking washer with inner sawteeth and outer sawteeth

Abstract

The utility model relates to the field of sawtooth locking washers, in particular to a high-precision inner and outer sawtooth locking washer, which comprises a plurality of outer sawteeth, a lower ring, a plurality of inner sawteeth and an upper ring, the plurality of outer sawteeth are fixedly arranged on the outer circumferential surface of the lower ring, the plurality of inner sawteeth are fixedly arranged on the inner ring surface of the upper ring, and a clamping block is arranged on the inner ring surface of the lower ring. A notch is formed in the outer ring face of the upper ring, the width of the notch is not smaller than that of the clamping block, a clamping groove is formed in one side wall of the notch, the thickness of the clamping groove is consistent with that of the clamping block, the clamping groove is in the shape of an unclosed annular section with the central axis of the upper ring as the axis, the clamping block is connected with the clamping groove in a clamped mode, and the thickness of the upper ring is consistent with that of the lower ring. When the gasket is replaced and the mounting bolt is unscrewed, the upper ring and the lower ring cannot rotate synchronously, so that the outer sawteeth or the inner sawteeth can recover from a deformation state, the force applied to a mounting plane by the outer sawteeth and the inner sawteeth is reduced, and the scratch of the mounting plane is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to sawtooth locking washer field, especially to a high-precision internal and external sawtooth locking washer. BACKGROUND

[0002] Sawtooth locking washer is the washer for the small piece on the effect of bolt anti-loose, its size and the three-dimensional plate material stamping piece fastening screw that it uses together cooperate, the size of self-tapping thread screw is adapted. The internal and external sawtooth locking washer of the prior art is provided with sawtooth in the inner ring and the outer ring, so that it can provide friction for the installation plane and the installation bolt, so the anti-loose effect is good, but if it needs to be replaced or disassembled, due to the setting of the internal and external sawtooth, the force received by the bolt will be more easily transmitted through the washer to the installation plane, thereby causing a deeper scratch on the installation plane.

[0003] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at overcoming the defects of the prior art and provides a high-precision internal and external sawtooth locking washer, which is realized by the following technical solutions:

[0005] A high-precision internal and external sawtooth locking washer, comprising a plurality of external sawteeth, a lower ring, a plurality of internal sawteeth and an upper ring, the plurality of external sawteeth are fixedly arranged on the outer circumferential surface of the lower ring, the plurality of internal sawteeth are fixedly arranged on the inner annular surface of the upper ring, the inner annular surface of the lower ring is provided with a clamping block, the outer annular surface of the upper ring is provided with a notch, the width of the notch is not less than the width of the clamping block, one side wall of the notch is provided with a clamping groove, the thickness of the clamping groove is consistent with the thickness of the clamping block, and the clamping groove is in the shape of an unsealed ring segment with the central axis of the upper ring as the axis, the clamping block is clamped with the clamping groove, and the thickness of the upper ring is consistent with the thickness of the lower ring.

[0006] In the technical scheme, the outer sawtooth is used to increase the friction between the installation plane and the installation bolt, and also has a buffering effect; the lower ring is used to set the outer sawtooth and transmit the pressure; the inner sawtooth is used to increase the friction between the installation bolt and the installation plane, and also has a buffering effect; the upper ring is used to set the inner sawtooth and transmit the pressure to the lower ring; the clamping block is used to be clamped with the clamping groove, so that the upper ring starts to rotate after a certain angle of rotation, and then the lower ring starts to rotate due to the contact between the clamping block and one end of the clamping groove; the notch is used to put the clamping block, so that the clamping block can be clamped with the clamping groove; the clamping groove is annular and not closed, so that the clamping block can be in contact with one end of the clamping groove no matter clockwise or counterclockwise rotation; the thickness of the clamping groove is consistent with the thickness of the clamping block, so that the clamping block cannot shake in the axial direction after clamping; the thickness of the upper ring is consistent with the thickness of the lower ring, so that the force applied by the bolt is balanced after the cooperation of the upper ring and the lower ring.

[0007] The utility model discloses further provide that: the outer sawtooth inclines downward, the inner sawtooth inclines upward.

[0008] In the technical scheme, the outer sawtooth inclines downward, and the inner sawtooth inclines upward, the outer sawtooth is used to increase the friction between the installation plane and the installation bolt, and the inner sawtooth is used to increase the friction between the installation bolt and the installation plane.

[0009] The utility model discloses further provide that: the outer sawtooth inclines upward, the inner sawtooth inclines downward.

[0010] In the technical scheme, the outer sawtooth inclines upward, and the inner sawtooth inclines downward, the outer sawtooth is used to increase the friction between the installation plane and the installation bolt, and the inner sawtooth is used to increase the friction between the installation bolt and the installation plane.

[0011] The utility model discloses further provide that: the inner ring surface on the lower ring is provided with first limit ring, and the thickness of first limit ring is less than the thickness of lower ring.

[0012] The utility model discloses further provide that: the upper ring still includes second limit ring, second limit ring sets up on the outer ring surface of upper ring, and the notch and clamping groove all set up on second limit ring, and the thickness of second limit ring is less than the thickness of upper ring.

[0013] In the technical scheme, the cooperation of the first limit ring and the second limit ring makes the position of the cooperation of the upper ring and the lower ring accurate.

[0014] The utility model discloses further provide that: the sum of the thickness of first limit ring and the thickness of second limit ring is consistent with the thickness of upper ring.

[0015] In the technical scheme, the sum of the thickness of the first limiting ring and the thickness of the second limiting ring is consistent with the upper ring, so that the upper ring and the lower ring are matched, and the middle part is flat.

[0016] The utility model discloses a high accuracy inner and outer sawtooth locking washer, compares with prior art,

[0017] 1. The utility model discloses a set up upper ring, lower ring, clamping block and card slot, make when replacing the utility model, loosen the installation bolt, and the upper ring and lower ring do not rotate simultaneously, so that the installation bolt can not influence the installation plane and rotate a certain angle, so that the outer sawtooth or inner sawtooth that contacts with the installation plane can recover from the deformation state, thereby reducing the force that the outer sawtooth and inner sawtooth exert to the installation plane, reducing the scratch of installation plane.

[0018] 2. The utility model discloses still set up first limiting ring and second limiting ring, make the upper ring and lower ring cooperation more accurate, and the process that clamping block is put into the gap and is clamped into the card slot is more simple. DRAWINGS

[0019] Figure 1 It is the schematic view of the first embodiment of the utility model;

[0020] Figure 2 It is the schematic view of the lower ring of the first embodiment of the utility model;

[0021] Figure 3 It is the schematic view of the upper ring of the first embodiment of the utility model;

[0022] Figure 4 It is the schematic view of the second embodiment of the utility model.

[0023] The corresponding component name that the figure number and letter indicate: 10-outer sawtooth;20-lower ring;201-clamping block;202-first limiting ring;30-inner sawtooth;40-upper ring;401-gap;402-card slot;403-second limiting ring. DETAILED DESCRIPTION

[0024] The embodiment of the utility model is explained in detail below, and the embodiment is implemented under the premise of the technical scheme of the utility model, and detailed implementation mode and specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0025] As Figures 1-3As shown in the utility model discloses a high accuracy inner and outer sawtooth locking washer, including several outer sawtooth 10, lower ring 20, several inner sawtooth 30 and upper ring 40, several outer sawtooth 10 fixedly arranged on the outer circumferential surface of lower ring 20, several inner sawtooth 30 fixedly arranged on the inner ring surface of upper ring 40, the inner ring surface of lower ring 20 is provided with the clamping block 201, the outer ring surface of upper ring 40 is provided with the notch 401, the width of notch 401 is not less than the width of clamping block 201, one side wall of notch 401 is provided with the clamping groove 402, the thickness of clamping groove 402 is consistent with the thickness of clamping block 201, and the shape of clamping groove 402 is the non-closed ring segment with the central axis of upper ring 40 as the axis, clamping block 201 is clamped with clamping groove 402, and the thickness of upper ring 40 is consistent with the thickness of lower ring 20. Among them, preferably, the corresponding fan-shaped angle of clamping groove 402 two ends is 270 degrees;The corresponding fan-shaped angle of clamping block 201 should be as small as possible under the condition of guaranteeing structural strength, preferably, 45 degrees.

[0026] As Figures 1-3 shown, the utility model discloses a high accuracy inner and outer sawtooth locking washer, and the outer sawtooth 10 is inclined downward, and the inner sawtooth 30 is inclined upward. Among them, with this structure as the first embodiment, under this embodiment, the inner sawtooth 30 contacts the mounting bolt, the clamping block 201 enters the notch 401, and the upper ring 40 rotates clockwise when the clamping block enters the clamping groove 402.

[0027] As Figures 1-3 shown, the utility model discloses a high accuracy inner and outer sawtooth locking washer, and the outer sawtooth 10 is inclined upward, and the inner sawtooth 30 is inclined downward. Among them, with this structure as the second embodiment, under this embodiment, the outer sawtooth 10 contacts the mounting bolt, the clamping block 201 enters the notch 401, and the lower ring 20 rotates clockwise when the clamping block enters the clamping groove 402.

[0028] As Figures 1-3 shown, the utility model discloses a high accuracy inner and outer sawtooth locking washer, and the inner ring surface on the lower ring 20 is provided with a first limiting ring 202, and the thickness of the first limiting ring 202 is less than the thickness of the lower ring 20. Among them, the first limiting ring 202 is integrally formed with the lower ring 20;Preferably, the bottom surface of the first limiting ring 202 coincides with the bottom surface of the lower ring 20.

[0029] As Figures 1-3As shown, this utility model proposes a high-precision inner and outer serrated locking washer. The upper ring 40 further includes a second limiting ring 403, which is disposed on the outer ring surface of the upper ring 40. The notch 401 and the slot 402 are both disposed on the second limiting ring 403, and the thickness of the second limiting ring 403 is less than the thickness of the upper ring 40. The second limiting ring 403 is integrally formed with the upper ring 40; preferably, the upper surface of the second limiting ring 403 is flush with the upper surface of the upper ring 40.

[0030] like Figures 1-3 As shown, the present invention proposes a high-precision inner and outer serrated locking washer, wherein the sum of the thickness of the first limiting ring 202 and the thickness of the second limiting ring 403 is consistent with the thickness of the upper ring 40.

[0031] The working principle of this utility model is as follows:

[0032] a) Taking the first embodiment as an example, when using this utility model:

[0033] b) First assemble the upper and lower rings, then insert the snap-fit ​​block into the slot;

[0034] c) Place the assembled washer onto the mounting surface and insert the mounting bolts;

[0035] d) Tighten the mounting bolts so that the mounting bolts contact the inner serrations of the inner ring, at which point the outer serrations of the outer ring contact the mounting surface;

[0036] e) Continue tightening. At this time, the inner ring rotates, the position of the locking block is inconvenient, and the locking groove rotates relative to it. At this time, the force of rotation is not transmitted to the outer ring, and the outer ring does not move.

[0037] f) Continue tightening. After rotating a certain angle, the locking block contacts the side wall of the slot. After that, the inner and outer rings rotate synchronously. g) Continue tightening to the specified preload. At this time, both the inner and outer serrations deform to provide additional pressure.

[0038] h) When replacing this utility model;

[0039] i) Loosen the bolts;

[0040] j) The snap-fit ​​block rotates to the other end of the slot. During this process, the outer ring does not rotate, while the inner ring rotates, so that the outer serrations will not scratch the mounting surface.

[0041] k) The locking block rotates to the other end of the slot until it reaches the notch. At this point, the outer serrations recover their deformation, and the additional pressure generated by the deformation is reduced, thereby reducing friction and mitigating subsequent scratches.

[0042] 1) Continue to loosen the screw, rotating the outer ring together with the inner ring, until it can be removed.

[0043] The above merely provides the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

[0044] It should be noted that, in this text, relational terms such as first and second and the like are used merely to distinguish one entity or action from another, without necessarily requiring or implying that there is any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus including the element.

Claims

1. A high-precision internal and external serrated locking washer, characterized in that: The device includes several outer serrations (10), a lower ring (20), several inner serrations (30), and an upper ring (40). The outer serrations (10) are fixedly disposed on the outer circumferential surface of the lower ring (20), and the inner serrations (30) are fixedly disposed on the inner ring surface of the upper ring (40). A snap-fit ​​block (201) is provided on the inner ring surface of the lower ring (20), and a notch (401) is provided on the outer ring surface of the upper ring (40). The width of the notch (401) is... The width of the notch (401) is not less than that of the snap-fit ​​block (201). A slot (402) is provided on one side wall of the notch (401). The thickness of the slot (402) is the same as that of the snap-fit ​​block (201). The shape of the slot (402) is an unclosed annular segment with the central axis of the upper ring (40) as the axis. The snap-fit ​​block (201) snaps into the slot (402). The thickness of the upper ring (40) is the same as that of the lower ring (20).

2. The high-precision internal and external serrated locking washer according to claim 1, characterized in that: The outer serrations (10) are inclined downwards, and the inner serrations (30) are inclined upwards.

3. The high-precision internal and external serrated locking washer according to claim 1, characterized in that: The outer serrations (10) are inclined upwards, and the inner serrations (30) are inclined downwards.

4. A high-precision internal and external serrated locking washer according to claim 2 or 3, characterized in that: A first limiting ring (202) is provided on the inner ring surface of the lower ring (20), and the thickness of the first limiting ring (202) is less than the thickness of the lower ring (20).

5. A high-precision internal and external serrated locking washer according to claim 4, characterized in that: The upper ring (40) further includes a second limiting ring (403), which is disposed on the outer ring surface of the upper ring (40). The notch (401) and the slot (402) are both disposed on the second limiting ring (403), and the thickness of the second limiting ring (403) is less than the thickness of the upper ring (40).

6. A high-precision internal and external serrated locking washer according to claim 5, characterized in that: The sum of the thickness of the first limiting ring (202) and the thickness of the second limiting ring (403) is the same as the thickness of the upper ring (40).

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