A device to prevent screws from tilting

Abstract

The present invention discloses a device for preventing a screw from tilting, comprising: a bushing wall, a bushing body and an elastic clamping piece, wherein the bushing wall and the middle part of the bushing body are hollow structures and are rotatably connected at one end; the elastic clamping piece clamps the bushing wall and the bushing body, restricts the free rotation of the bushing wall relative to the bushing body, and has a groove matching the screw at the other end of the bushing wall. Through the above technical solution, the screw can be released vertically on the product, and the screw can be locked vertically into the product, thereby ensuring the qualified rate of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of electric tools, and in particular to a device for preventing a screw from tilting during a process of tightening the screw. Background Art

[0002] With the progress and development of industry, the requirements for refined operation of the process are becoming higher and higher. In the field of screw locking device technology, screws are often prone to tilting during the locking process using electric tools, resulting in batches of unqualified products, which not only leads to increased costs but also low efficiency. Summary of the Invention

[0003] In order to solve the above technical problem, the present invention provides a device for preventing a screw from tilting.

[0004] The technical solutions of the present invention are as follows:

[0005] A device for preventing a screw from tilting comprises: a bushing wall, a bushing body and an elastic clamping piece, wherein the bushing wall and the middle part of the bushing body are hollow structures and are rotatably connected at one end; the elastic clamping piece clamps the bushing wall and the bushing body, restricting the bushing wall from freely rotating relative to the bushing body, and a groove is provided at the other end of the bushing wall to cooperate with the screw.

[0006] Furthermore, the bushing body includes a base with an annular structure and a plurality of positioning seats, the bottom surface of the base is connected to one end of the positioning seat, the other end of the positioning seat is a free end, and there is a certain gap between adjacent positioning seats.

[0007] Preferably, the upper half of the bushing wall is a protrusion, the protrusion is inserted into the gap, and the end portion is rotatably connected to the base.

[0008] Furthermore, a through hole is provided at the end of the protruding portion, a notch is provided on the base, and the shaft is fixed on both sides of the notch after passing through the through hole.

[0009] Furthermore, a first groove and a second groove are sequentially provided in the inner middle portion of the lower half of the bushing wall, and the first groove and the second groove are used together to accommodate the screw.

[0010] Preferably, a top surface of the lower half has a horizontal portion, and the horizontal portion contacts the free end of the protrusion.

[0011] Preferably, the outer shape of the lower half of the bushing wall is a conical structure.

[0012] Furthermore, an arc-shaped groove is formed on both the protruding portion and the outer wall of the positioning seat, and the elastic clamping piece is sleeved in the arc-shaped groove.

[0013] Preferably, the width of the notch of the arc-shaped groove is greater than the width of other parts.

[0014] Furthermore, it also includes a fixing ring with an annular structure, the base is connected to the fixing ring, and the fixing ring has a connecting hole.

[0015] Beneficial effect: The present invention utilizes the cooperation of the elastic clamping member and the bushing body to enable the bushing wall to clamp the screw, and uses an electric tool or other device to push the screw to overcome the clamping force of the elastic clamping member. Since the bushing wall is rotatably connected to the bushing body, the bushing wall rotates relative to the bushing body, so that the screw is released vertically on the product, and the screw can be locked vertically into the product, ensuring the product's qualified rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the exploded structure of a device for preventing a screw from tilting disclosed in an embodiment of the present invention;

[0018] Figure 2 This is another structural schematic diagram of a device for preventing a screw from tilting disclosed in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the overall structure of a device for preventing a screw from tilting disclosed in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the matching structure of the bushing wall and the bushing body disclosed in an embodiment of the present invention;

[0021] Figure 5 A schematic structural diagram of a first bushing wall disclosed in an embodiment of the present invention;

[0022] Figure 6 This is a schematic structural diagram of the fixing ring disclosed in an embodiment of the present invention.

[0023] The numbers and letters in the figure represent the corresponding component names:

[0024] 1. Bushing wall; 11. First bushing wall; 12. Second bushing wall; 13. First groove; 14. Second groove; 15. Protrusion; 2. Bushing body; 21. Base; 22. Positioning seat; 23. Arc groove; 3. Elastic sleeve; 4. Fixing ring; 5. Screw; 6. Cylindrical pin. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention. Example

[0026] Reference Figures 1 to 6 It includes a bushing wall 1, a bushing body 2, an elastic clamping member, and a fixing ring 4, wherein the bushing wall 1 is relatively arranged to clamp the screw 5, and the bushing body 2 and the elastic clamping member are used to control the bushing wall 1 to provide a certain pressure when its position changes relative to the bushing body 2.

[0027] Specifically, the bushing wall 1 has two, namely a first bushing wall 11 and a second bushing wall 12 . The first bushing wall 11 and the second bushing wall 12 are arranged opposite to each other and clamp the screw portion of the screw 5 from opposite sides of the screw 5 .

[0028] The inner middle part of the lower half of the bushing wall 1 has a first groove 13, which is adapted to the outer diameter of the screw rod of the screw 5. The first bushing wall 11 and the second bushing wall 12 respectively clamp the screw rod from different parts of the outer diameter of the screw rod to keep the screw rod at the required angle.

[0029] There is also a second groove 14 in the inner middle part of the lower half of the bushing wall 1. The second groove 14 is adapted to the outer diameter of the nut of the screw 5. The second groove 14 is connected to the first groove 13. The second groove 14 is located above the first groove 13. The second groove 14 and the first groove 13 together provide a clamping space for the screw 5.

[0030] The inner wall of the second groove 14 may be a conical structure, so as to accommodate nuts of different sizes.

[0031] The upper half of the bushing wall 1 is a protrusion 15 , which extends into the bushing body 2 and is connected to the bushing body 2 .

[0032] The bushing body 2 includes a base 21, which is a circular ring structure. A positioning seat 22 is connected to the base 21. The positioning seat 22 and the base 21 can preferably be connected as one piece, that is, the top of the positioning seat 22 is connected to the base 21, and the bottom end is a free end. There are also two positioning seats 22, including a first positioning seat and a second positioning seat, wherein the first positioning seat and the second positioning seat are positioned opposite to each other, and there is a space between the two. The top of the first positioning seat occupies a part of the inner arc surface of the base 21, and the top of the second positioning seat also occupies a part of the inner arc surface of the base 21. The wall surface of the first positioning seat and the second positioning seat can accommodate the upper half of the bushing wall 1.

[0033] Combine Figure 1 It can be seen that the number of the bushing walls 1 is consistent with the number of the positioning seats 22 , so that there is a bushing wall 1 between adjacent positioning seats 22 .

[0034] In this embodiment, a first bushing wall 11 can be accommodated between the left side of the first positioning seat and the right side of the second positioning seat, and a second bushing wall 12 can be accommodated between the right side of the first positioning seat and the left side of the second positioning seat.

[0035] Preferably, the outer wall and the inner wall of the positioning seat 22 are both arc surface structures, wherein the arc line of the inner wall of the positioning seat 22 is consistent with the arc line of the inner ring of the base 21, that is, the positioning seat 22 and the base 21 form a concentric structure.

[0036] Arc grooves 23 are respectively formed on the outer wall of the positioning seat 22 and the protrusion 15 of the upper half of the bushing wall 1. When the upper half of the bushing wall 1 is inserted between adjacent positioning seats 22, the arc grooves 23 correspond to each other.

[0037] Preferably, two arc-shaped grooves 23 are respectively formed on the positioning seat 22 and the bushing, which are parallel to each other in the upper and lower directions, and an elastic sleeve 3 is sleeved on the arc-shaped groove 23 .

[0038] In addition, the inner wall of the base 21 has a notch, and the top of the protrusion 15 has a through hole. The shaft passes through the through hole and is inserted into the notch of the inner wall, so that the protrusion 15 can swing relative to the base 21.

[0039] The elastic sleeve 3 can exert a centripetal clamping force on the protrusion 15 . When the protrusion 15 swings relative to the base 21 , it needs to overcome the clamping force provided by the elastic sleeve 3 .

[0040] The elastic sleeve 3 is a rubber ring, which is sleeved in the arc groove 23 , facing each other up and down, and can ensure that the protrusion 15 is stably stressed.

[0041] In this embodiment, the bushing body 2 and the bushing wall 1 are connected in this manner, that is, the protrusion 15 is extended upward along the gap between the corresponding first positioning seat and the second positioning seat, and the free end of the protrusion 15 is extended to the notch position of the inner wall, and then the rotating shaft is passed through the free end of the protrusion 15, and the two ends of the rotating shaft are fixed to the notch, so that the positioning seat 22 of the bushing body 2 and the protrusion 15 of the bushing wall 1 essentially form a cylindrical barrel structure, and the elastic sleeve 3 is mounted on the arc groove 23, so that it can be clamped as a whole to prevent the bushing wall 1 from swinging freely relative to the bushing body 2.

[0042] Preferably, the bottom surface of the arc groove 23 cooperates with the elastic sleeve 3, and the width of the top surface is wider than the bottom surface. When the elastic sleeve 3 is mounted on the arc groove 23, the arc groove 23 can play a guiding role, quickly guiding it into the arc groove 23, ensuring the reliability of the connection and preventing it from slipping.

[0043] In practice, multiple elastic sleeves 3 can be placed in the arc groove 23, or multiple arc grooves 23 can be provided, each arc groove 23 having one or more elastic sleeves 3, etc. These are all variations of this embodiment.

[0044] Of course, the free end of the protrusion 15 and the base 21 can also be connected through other rotating mechanisms, such as bearings, etc., but this may increase costs. Therefore, in this embodiment, a cylindrical pin 6 is preferably used for connection.

[0045] In this embodiment, the area of ​​the upper half of the bushing wall 1 is smaller than that of the lower half, that is, a horizontal portion is formed on the top surface of the lower half, and the horizontal portion contacts the end face of the free end of the positioning seat 22. This approach is beneficial when the bushing wall 1 and the bushing body 2 are matched, that is, when the free end of the protrusion 15 is inserted into the notch of the base 21, there is no need to consider whether they correspond, and it is only necessary to contact the horizontal portion with the free end of the positioning seat 22, thereby achieving rapid positioning during assembly.

[0046] Further preferably, the outer shape of the lower half of the bushing wall 1 is a conical structure, which is conducive to observation after clamping the screw 5 and can also reduce costs.

[0047] Of course, in this embodiment, the device for preventing the screw 5 from tilting also includes a fixing ring 4, which is connected to the base 21 of the bushing body 2. The fixing ring 4 is also a circular ring structure, and various connection holes can be arranged on the fixing ring 4 to facilitate connection and coordination with equipment such as a press.

[0048] In practice, it is feasible to open a connection hole on the base 21 for connecting with the corresponding equipment. Specifically, for example, if the base 21 is large in size, there will be enough space for the opening, or if the base 21 is thick, the base 21 can be connected to the corresponding equipment by opening a blind hole, etc. These are also feasible solutions, which are all variations of the present embodiment.

[0049] During operation of this embodiment, by assembling the bushing body 2 and the bushing wall 1 and placing the screw 5 in the first groove 13 and the second groove 14, the placement method can be vertically placed from the middle of the base 21, and the screw 5 can pass through the inner wall of the positioning seat 22 in turn, enter the second groove 14 and the first groove 13, and be clamped by the second groove 14, and the first groove 13 can clamp it.

[0050] When it is necessary to implant the screw 5 into the target object, a tool is used to pass through the middle of the cylinder surrounded by the base 21, the positioning seat 22 and the protrusion 15, and then extend into the second groove 14, and contact the top of the screw 5. During the downward pushing process, when the thrust overcomes the elastic force of the elastic sleeve 3, the first bushing wall 11 and the second bushing wall 12 can be separated in the surrounding directions relative to the positioning seat 22. During the separation process, the screw 5 is gradually released from the clamped state and maintains a vertical state. Finally, as the depth of implantation increases, it is gradually released, thereby completing the process from clamping to implantation. During this process, the screw 5 can effectively avoid tilting, thereby improving the quality of the locking screw 5 in the product.

[0051] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the creative concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A device for preventing a screw from tilting, characterized in that: include: The cam is secured to the base via a secure hook and securely fastened to the cam face, wherein the cam is secured to the base via a secure hook. The cam is secured to the base via a secure hook. The cam is secured to the base via a secure hook. A first groove and a second groove are sequentially provided in the middle of the inner side of the lower half of the bushing wall, and the first groove and the second groove are used to accommodate the screw; The inner wall of the second groove is a conical structure; The first groove is adapted to the outer diameter of the screw rod of the screw, and the second groove is adapted to the outer diameter of the nut of the screw; The lower half of the bushing wall protrudes from the free end of the positioning seat; the lower halves of the bushing wall cooperate with each other; A horizontal portion is provided on the top surface of the lower half, and the horizontal portion contacts the free end of the positioning seat; An arc-shaped groove is formed on the outer wall of the protruding portion and the positioning seat, and the elastic clamping piece is sleeved in the arc-shaped groove.

2. A device for preventing a screw from tilting according to claim 1, characterized in that: The outer shape of the lower half of the bushing wall is a conical structure.

3. The device for preventing a screw from tilting according to claim 1, characterized in that: The width of the notch of the arc-shaped groove is greater than the width of other parts.

4. The device for preventing a screw from tilting according to claim 1, characterized in that: It also includes a fixing ring with an annular structure, the base is connected to the fixing ring, and the fixing ring has a connecting hole.

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