Screw locking and releasing structure

Abstract

The utility model belongs to the technical field of locking and releasing structures, and discloses a screw locking and releasing structure which comprises a locking and releasing part, a locking and releasing part and a locking and releasing part. A mounting cavity is formed in the mounting sleeve; the locking and releasing piece is arranged in the mounting cavity; when the locking and releasing part moves in the direction close to the inner wall of the mounting cavity, the locking and releasing cavity contracts and deforms under the acting force of the mounting cavity in the radial direction, so that the locking and releasing part locks the screw rod; and when the locking and releasing part moves in the direction away from the inner wall of the mounting cavity, the locking and releasing cavity loses the acting force of the mounting cavity in the radial direction and expands and deforms, so that the locking and releasing part loosens the screw rod. According to the screw locking and releasing structure, the relative position of the mounting sleeve and the locking and releasing piece is changed by moving the mounting sleeve, the two states of clamping and loosening the screw can be switched, the adjusting, dismounting and mounting efficiency is high, manpower is saved, and user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lock release structures, in particular to a screw lock release structure. Background Art

[0002] In mechanical structures, telescopic sleeve structures are often used in the mechanical field, and the telescopic movement is usually realized by a combined structure of a screw and a nut sleeve.

[0003] However, although the combined structure of the screw and the nut sleeve can achieve stable and controllable telescopic adjustment, the adjustment speed is slow. Especially when the user manually adjusts or needs to remove the screw, it is necessary to rotate the screw or the nut sleeve, which is time-consuming and laborious, and the user experience is not good.

[0004] Therefore, there is an urgent need for a screw lock release structure to solve the above technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a screw lock release structure. By moving the installation sleeve and changing its relative position with the lock release part, it can be switched between two states of clamping and loosening the screw, with high adjustment and disassembly efficiency, labor saving, and improved user experience.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Provide a screw lock release structure, including:

[0008] A lock release part, which is provided with a lock release cavity for the screw to pass through;

[0009] An installation sleeve, which is provided with an installation cavity inside; the lock release part is arranged in the installation cavity;

[0010] When the lock release part moves along the direction close to the inner wall of the installation cavity, the lock release cavity receives the acting force of the installation cavity in the radial direction and contracts and deforms, so that the lock release part locks the screw;

[0011] When the lock release part moves along the direction away from the inner wall of the installation cavity, the lock release cavity loses the acting force of the installation cavity in the radial direction and expands and deforms, so that the lock release part loosens the screw.

[0012] Preferably, the lock release part includes a main body part and at least two lock release parts. At least two lock release parts extend outward from the main body part and are arranged at intervals. The lock release cavity is formed between at least two lock release parts, a partition groove is formed between adjacent two lock release parts, and the lock release part is in close contact with the installation cavity.

[0013] Preferably, a force-bearing surface is provided on the outer peripheral surface of the lock release portion, and a support surface is provided in the installation cavity. When the lock release member moves in a direction close to the support surface, the force-bearing surface receives the support force of the support surface in the radial direction, and the lock release portions move toward each other and control the lock release cavity to shrink and deform inward.

[0014] Preferably, the installation sleeve further includes an active cavity, which is communicated with the installation cavity; the lock release member further includes a movable portion, which extends from the main body in a direction away from the lock release portion, and the movable portion passes through the active cavity.

[0015] Preferably, a clearance cavity communicated with the lock-release cavity is provided in the movable portion, and the clearance cavity is used for the screw rod to pass through.

[0016] Preferably, the outer wall of the lock release portion is provided with a first positioning surface, and the installation cavity is provided with a second positioning surface. When the lock release member is installed in the installation cavity, the first positioning surface is in contact with the second positioning surface to limit the lock release member from rotating around its own axis in the installation sleeve.

[0017] Preferably, a third positioning surface is provided on the outer wall of the movable portion, and a fourth positioning surface is provided in the movable cavity. When the lock release member is installed in the installation cavity, the third positioning surface is in contact with the fourth positioning surface to limit the lock release member from rotating around its own axis in the installation sleeve.

[0018] Preferably, the lock release portion includes a movable portion and a clamping portion, the movable portion extends outward from the main body portion and is arranged opposite to each other, the clamping portion is embedded in the movable portion, the lock release cavity is formed between the clamping portions, the separation groove is formed between two adjacent movable portions, and the movable portion is tightly attached to the installation cavity.

[0019] Preferably, a fixing piece is further included, and a connecting groove is provided at the end of the moving part. The connecting groove is circumferentially opened on the outer wall of the moving part, and the connecting groove is used to connect the fixing piece.

[0020] Preferably, a mounting notch is further provided at the end of the moving part, the mounting notch is extended along the axial direction of the moving part, and the mounting notch is communicated with the connecting groove.

[0021] Beneficial effects of the utility model:

[0022] The screw locking and releasing structure provided by the utility model has a locking and releasing member arranged in a mounting sleeve, and a locking and releasing cavity for the screw to pass through is arranged in the locking and releasing member, and the locking and releasing member can move in the mounting sleeve, and can selectively clamp or release the screw. The user can manually pull the locking and releasing member to move axially in the mounting sleeve: when the locking and releasing member moves in a direction close to the mounting sleeve, the locking and releasing cavity contracts radially inward, so that the locking and releasing member clamps the screw; when the locking and releasing member moves in a direction away from the mounting sleeve, the locking and releasing cavity expands radially outward, so that the locking and releasing member loosens the screw, and the user can directly pull the screw to adjust its position or remove the screw. In summary, the screw locking and releasing structure provided by the utility model does not need to adjust the position of the screw by twisting. The user can switch between the two states of clamping and loosening the screw by moving the locking and releasing member and changing its relative position with the mounting sleeve. The adjustment and disassembly efficiency is high, manpower is saved, and the user experience is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the screw locking and releasing structure provided by the utility model;

[0024] Figure 2 It is a schematic diagram of the state of the screw locking and releasing structure provided by the utility model when the screw is clamped;

[0025] Figure 3 It is a schematic diagram of the state of the screw locking and releasing structure provided by the utility model when the screw is loosened;

[0026] Figure 4 It is a structural schematic diagram of the lock release member provided by the utility model;

[0027] Figure 5 It is a cross-sectional view of the lock release member provided by the utility model;

[0028] Figure 6 It is a partial structural schematic diagram of the lock release member provided by the utility model;

[0029] Figure 7 It is a structural schematic diagram of the installation sleeve provided by the utility model;

[0030] Figure 8 It is a cross-sectional view of the installation sleeve provided by the utility model.

[0031] In the figure:

[0032] 10. Lock release member; 101. Lock release cavity; 102. Separation groove; 11. Main body; 12. Lock release portion; 121. Movable portion; 122. Clamping portion; 1221. Clamping pattern; 123. Force bearing surface; 124. First positioning surface; 13. Moving portion; 131. Displacement cavity; 132. Third positioning surface; 133. Connecting groove; 134. Installation notch;

[0033] 20. Installation sleeve; 201. Installation cavity; 2011. Support surface; 2012. Second positioning surface; 202. Movable cavity; 2021. Fourth positioning surface;

[0034] 100. Screw. Specific embodiments

[0035] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the sake of description, only the parts related to the present utility model are shown in the drawings, rather than all the structures.

[0036] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0037] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below", and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0038] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0039] This embodiment provides a screw locking and releasing structure, which is used to selectively clamp the screw 100: when the screw locking and releasing structure clamps the screw 100, the screw 100 is maintained at a set extended length; when the screw locking and releasing structure releases the screw 100, the user can directly pull the screw 100 to adjust the extended length or remove the screw 100. As Figures 1-7 shown, the screw locking and releasing structure includes a locking and releasing member 10 and a mounting sleeve 20. The locking and releasing member 10 is provided with a locking cavity 101 for the screw 100 to pass through, and a mounting cavity 201 is provided in the mounting sleeve 20; the locking and releasing member 10 is arranged in the mounting cavity 201.

[0040] When the locking and releasing member 10 moves in the direction close to the inner wall of the mounting cavity 201, that is, moves vertically downward, the locking cavity 101 undergoes a radial contraction deformation under the action of the mounting cavity 201, so as to lock the screw 100 by the locking and releasing member 10; when the locking and releasing member 10 moves in the direction away from the inner wall of the mounting cavity 201, that is, moves vertically upward, the locking cavity 101 loses the action of the mounting cavity 201 in the radial direction and expands and deforms, so as to release the screw 100 by the locking and releasing member 10.

[0041] Specifically, for the screw locking and releasing structure provided in this embodiment, the locking and releasing member 10 is arranged in the mounting sleeve 20, and the locking cavity 101 for the screw 100 to pass through is arranged in the locking and releasing member 10. The locking and releasing member 10 can move in the mounting sleeve 20 and can selectively clamp or release the screw 100. The user can manually pull the locking and releasing member 10 to move axially in the mounting sleeve 20: when the locking and releasing member 10 moves in the direction close to the mounting sleeve 20, the locking cavity 101 contracts inward in the radial direction, so that the locking and releasing member 10 clamps the screw 100; when the locking and releasing member 10 moves in the direction away from the mounting sleeve 20, the locking cavity 101 expands outward in the radial direction, so that the locking and releasing member 10 releases the screw 100. At this time, the user can directly pull the screw 100 to adjust its position or remove the screw 100. In summary, for the screw locking and releasing structure provided in this embodiment, there is no need to adjust the position of the screw 100 by screwing. By moving the locking and releasing member 10 and changing its relative position with the mounting sleeve 20, the user can switch between the two states of clamping and releasing the screw 100, with high adjustment and disassembly efficiency, saving manpower and improving the user experience.

[0042] Exemplarily, as Figures 4-6As shown, the unlocking member 10 includes a main body portion 11, at least two unlocking portions 12 and a moving portion 13. The at least two unlocking portions 12 extend outwardly from the main body portion 11 and are spaced apart. The moving portion 13 extends from the main body portion 11 in a direction away from the unlocking portions 12. A relief cavity 131 communicating with the unlocking cavity 101 is provided in the moving portion 13, and the relief cavity 131 is for the screw 100 to pass through. The mounting sleeve 20 further includes a movable cavity 202, and the movable cavity 202 communicates with the mounting cavity 201. The moving portion 13 passes through the movable cavity 202. Specifically, the unlocking portions 12 are provided at the upper end of the main body portion 11, and the moving portion 13 is provided at the lower end of the main body portion 11.

[0043] Further, as Figures 4-6 shown, an unlocking cavity 101 is formed between the at least two unlocking portions 12, a partition groove 102 is formed between two adjacent unlocking portions 12, and the unlocking portions 12 are in close contact with the mounting cavity 201. When the unlocking portions 12 move upward out of the mounting cavity 201, the unlocking portions 12 are gradually expanded and deformed, and the unlocking cavity 101 is gradually increased to loosen the screw 100.

[0044] In this embodiment, as Figures 4-6 shown, the unlocking member 10 includes two unlocking portions 12. The two unlocking portions 12 are symmetrically and spaced apart. A partition groove 102 is formed between the two unlocking portions 12, and the partition groove 102 extends to the main body portion 11. The partition groove 102 provides sufficient space for the deformation of the two unlocking portions 12.

[0045] Exemplarily, as Figures 1-8 shown, a force-receiving surface 123 is provided on the outer peripheral surface of the unlocking portion 12, and a supporting surface 2011 is provided in the mounting cavity 201. When the unlocking member 10 moves in a direction close to the supporting surface 2011, the force-receiving surface 123 receives the supporting force of the supporting surface 2011 in the radial direction, and the unlocking portions 12 move towards each other and control the unlocking cavity 101 to contract and deform inwardly. Specifically, the radial dimension of the unlocking portion 12 gradually increases from bottom to top to form a downwardly inclined force-receiving surface 123, and the upper end of the mounting cavity 201 forms a gradually expanding structure with a radial dimension gradually increasing from bottom to top to form an inclined upward supporting surface 2011. Therefore, when the unlocking member 10 moves downward, or when the screw 100 is subjected to a downward pressure, the force-receiving surface 123 presses against the supporting surface 2011, and as the downward moving distance or the downward load gradually increases, the supporting force of the supporting surface 2011 on the force-receiving surface 123 also gradually increases, and the tightening force of the mounting sleeve 20 on the unlocking portion 12 also gradually increases, and the screw 100 is clamped more tightly, so it has excellent locking stability.

[0046] Exemplarily, as Figures 4-6As shown, the locking and releasing part 12 includes a movable part 121 and a clamping part 122. The movable parts 121 extend outward from the main body part 11 and are arranged oppositely. The clamping part 122 is embedded in the movable part 121. A locking and releasing cavity 101 is formed between the clamping parts 122, and a partition groove 102 is formed between two adjacent movable parts 121. The movable part 121 is closely attached to the installation cavity 201.

[0047] Exemplarily, such as Figure 5 and Figure 6 As shown, the inner side of the clamping part 122 is provided with clamping threads 1221 adapted to the external threads of the screw 100 to increase the clamping force between the clamping part 122 and the screw 100 and improve the stability. Preferably, the clamping threads 1221 can be internal threads or a plurality of channel structures arranged at intervals in the vertical direction.

[0048] Exemplarily, the movable part 121 and the clamping part 122 are integrally formed.

[0049] Exemplarily, both the movable part 121 and the clamping part 122 are made of rubber or plastic. The hardness of the movable part 121 is less than that of the clamping part 122, or the elasticity of the movable part 121 is greater than that of the clamping part 122.

[0050] Exemplarily, the movable part 121 is made of an elastic material such as rubber or plastic, and the clamping part 122 is made of a metal material.

[0051] Exemplarily, such as Figure 3 , Figure 4 , Figure 5 and Figure 8 As shown, the outer wall of the locking and releasing part 12 is provided with a first positioning surface 124, and a second positioning surface 2012 is arranged in the installation cavity 201. When the locking and releasing member 10 is installed in the installation cavity 201, the first positioning surface 124 is attached to the second positioning surface 2012 to limit the locking and releasing member 10 from rotating around its own axis in the installation sleeve 20 and maintain the stable posture of the locking and releasing member 10.

[0052] Exemplarily, two first positioning surfaces 124 and two second positioning surfaces 2012 are symmetrically provided respectively, further improving the stability of preventing the locking and releasing member 10 from rotating.

[0053] Exemplarily, such as Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the outer wall of the moving part 13 is provided with a third positioning surface 132, and a fourth positioning surface 2021 is arranged in the moving cavity 202. When the locking and releasing member 10 is installed in the installation cavity 201, the third positioning surface 132 is attached to the fourth positioning surface 2021 to limit the locking and releasing member 10 from rotating around its own axis in the installation sleeve 20 and maintain the stable posture of the locking and releasing member 10.

[0054] Exemplarily, two third positioning surfaces 132 and two fourth positioning surfaces 2021 are symmetrically provided respectively, further improving the stability of preventing the unlocking member 10 from rotating self.

[0055] Exemplarily, the screw unlocking structure further includes a fixing member (not shown in the figure), such as Figure 4 shown, a connecting groove 133 is provided at the end of the moving part 13. The connecting groove 133 is circumferentially formed on the outer wall of the moving part 13 and is used for connecting the fixing member. Specifically, the fixing member is rotatably connected to the moving part 13 through the connecting groove 133. The fixing member can be connected to the mounting sleeve 20 by means of a threaded structure or the like. When the fixing member rotates relative to the mounting sleeve 20, the unlocking member 10 is driven to move up and down. The settings of the first positioning surface 124, the second positioning surface 2012, the third positioning surface 132 and the fourth positioning surface 2021 enable the unlocking member 10 not to rotate with the fixing member and move up and down while maintaining its original posture.

[0056] Exemplarily, such as Figure 4 shown, an installation notch 134 is further provided at the end of the moving part 13. The installation notch 134 extends along the axial direction of the moving part 13. The installation notch 134 communicates with the connecting groove 133. The setting of the installation notch 134 enables the moving part 13 to have sufficient space for shrinkage deformation so as to facilitate the insertion of the fixing member.

[0057] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A screw locking and releasing structure, characterized in that: include: A lock-release member (10), wherein the lock-release member (10) is provided with a lock-release cavity (101) for the screw rod (100) to pass through; An installation sleeve (20), wherein an installation cavity (201) is provided in the installation sleeve (20); the locking and releasing member (10) is arranged in the installation cavity (201); When the locking release member (10) moves in a direction close to the inner wall of the installation cavity (201), the locking release cavity (101) receives the force of the installation cavity (201) in the radial direction and contracts and deforms, so that the locking release member (10) locks the screw rod (100); When the locking release member (10) moves in a direction away from the inner wall of the installation cavity (201), the locking release cavity (101) loses the force of the installation cavity (201) in the radial direction and expands and deforms, so that the locking release member (10) loosens the screw rod (100).

2. The screw locking and releasing structure according to claim 1, characterized in that: The lock release member (10) comprises a main body (11) and at least two lock release portions (12), wherein the at least two lock release portions (12) extend outward from the main body (11) and are arranged at intervals, wherein the lock release cavity (101) is formed between the at least two lock release portions (12), and a separation groove (102) is formed between two adjacent lock release portions (12), and the lock release portion (12) is closely attached to the installation cavity (201).

3. The screw locking and releasing structure according to claim 2, characterized in that: The outer peripheral surface of the lock release portion (12) is provided with a force-bearing surface (123), and the installation cavity (201) is provided with a supporting surface (2011). When the lock release member (10) moves in a direction close to the supporting surface (2011), the force-bearing surface (123) receives the supporting force of the supporting surface (2011) in the radial direction, and the lock release portion (12) moves towards each other and controls the lock release cavity (101) to shrink and deform inwardly.

4. The screw locking and releasing structure according to claim 2, characterized in that: The installation sleeve (20) further comprises an active cavity (202), wherein the active cavity (202) is communicated with the installation cavity (201); the lock release member (10) further comprises a movable portion (13), wherein the movable portion (13) extends from the main body (11) in a direction away from the lock release portion (12), and the movable portion (13) passes through the active cavity (202).

5. The screw locking and releasing structure according to claim 4, characterized in that: The movable portion (13) is provided with a clearance cavity (131) which is in communication with the lock-release cavity (101), and the clearance cavity (131) is used for the screw rod (100) to pass through.

6. The screw locking and releasing structure according to claim 2, characterized in that: The outer wall of the lock release portion (12) is provided with a first positioning surface (124), and the installation cavity (201) is provided with a second positioning surface (2012). When the lock release member (10) is installed in the installation cavity (201), the first positioning surface (124) fits with the second positioning surface (2012) to limit the lock release member (10) from rotating around its own axis in the installation sleeve (20).

7. The screw locking and releasing structure according to claim 4, characterized in that: The outer wall of the movable portion (13) is provided with a third positioning surface (132), and the movable cavity (202) is provided with a fourth positioning surface (2021). When the locking member (10) is installed in the installation cavity (201), the third positioning surface (132) fits with the fourth positioning surface (2021) to limit the locking member (10) from rotating around its own axis in the installation sleeve (20).

8. The screw locking and releasing structure according to claim 2, characterized in that: The lock-release portion (12) comprises a movable portion (121) and a clamping portion (122); the movable portion (121) extends outward from the main body portion (11) and is arranged opposite to the movable portion (121); the clamping portion (122) is embedded in the movable portion (121); the lock-release cavity (101) is formed between the clamping portions (122); the separation groove (102) is formed between two adjacent movable portions (121); and the movable portion (121) is closely attached to the installation cavity (201).

9. The screw locking and releasing structure according to claim 4, characterized in that: It also comprises a fixing piece, and a connecting groove (133) is provided at the end of the moving part (13), and the connecting groove (133) is circumferentially opened on the outer wall of the moving part (13), and the connecting groove (133) is used to connect the fixing piece.

10. The screw locking and releasing structure according to claim 9, characterized in that: The end of the movable part (13) is also provided with a mounting notch (134), the mounting notch (134) is extended along the axial direction of the movable part (13), and the mounting notch (134) is communicated with the connecting groove (133).

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