Rotary locking piece and hot melting tool

Abstract

The utility model discloses a rotary locking piece and a hot melting tool, the rotary locking piece is used for locking a rodlike body and comprises a locking piece body, a rodlike body channel with an opening larger than the cross section size of the rodlike body is arranged in the locking piece body, rotating shaft parts are arranged on the locking piece body and located on the two sides of the rodlike body channel, and the rodlike body channel is communicated with the rotating shaft parts. And the inner surface of the rod body channel is provided with a compression locking surface which is matched with the surface of the rod-shaped body for locking in an inclined state. According to the utility model, the pressing locking surface is pressed on the surface of the rod-shaped body, so that the damage to the surface of the rod-shaped body can be effectively reduced, and the breakage of the rod-shaped body is avoided; and double-side locking can be achieved through the double pressing locking faces, the locking effect of the rod-shaped body is better, glue discharging is more stable, deformation, damage and breakage of the rod-shaped body can be avoided through vertical matching, and a user does not need to worry about damage to the rod-shaped body due to excessive pressing any more.

Description

Technical Field

[0001] This utility model relates to a rotary locking component and a hot melt tool incorporating such a rotary locking component. Background Technology

[0002] Hot melt glue guns, hot melt glue pens, and other hot melt tools use a heating structure to heat the glue stick, causing the solid glue stick to melt and thus bond objects together. During installation, the glue stick is attached to the tail end of the hot melt tool's housing. During use, the glue stick is held by a pushing structure and continuously pushed towards the head end of the housing to dispense glue.

[0003] Hot melt glue guns, as a commonly used hot melt tool, traditionally have a locking mechanism to lock the glue stick. The locking mechanism's axis is located on the underside of the glue stick, and other mechanisms drive the locking component to rotate, causing it to contact and lock the glue stick. This has the following disadvantages: 1. To ensure the glue stick does not slip, it often has sharp protrusions or ridges, and the rotation direction is along the diameter of the glue stick, inevitably causing compression and deformation, which can even lead to breakage. 2. Because the glue stick is locked by compression on one side, it is prone to tilting, making stable locking and glue delivery unstable. Moreover, since the tip is usually inserted vertically into the glue stick surface on one side, the glue stick is subjected to greater stress and lacks stable force. 3. When the glue stick is too small, its rotation stroke is limited, the compression effect is not obvious, and it is easy to slip. When the glue stick is too large, excessive pressure can cause significant deformation or even jamming. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a rotary locking component that provides stable locking and avoids extrusion deformation and breakage, as well as a hot melt tool containing such a rotary locking component.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a rotary locking component for locking a rod-shaped body, characterized in that: it includes a locking component body, the locking component body has a rod channel with an opening larger than the cross-sectional size of the rod-shaped body, the locking component body has a rotating shaft on both sides of the rod channel, and the inner surface of the rod channel has a pressing locking surface that is adapted to the surface of the rod-shaped body for locking in an inclined state.

[0006] As a preferred technical solution, the rotation axis of the rotating shaft is perpendicular to the axis of the rod channel.

[0007] As a preferred technical solution, there are two clamping and locking surfaces, which are located at the top and bottom of the rod channel, respectively, and the two clamping and locking surfaces are staggered and located at the front and rear ends of the locking body.

[0008] Alternatively, a clamping and locking surface may be provided, located at the top or bottom of the rod channel, and at the front or rear end of the locking component body.

[0009] As a preferred technical solution, the locking component body is provided with a drive shaft at the upper or lower part of the rod channel.

[0010] As a preferred technical solution, the drive shaft part includes a drive shaft seat disposed on the upper or lower part of the locking member body, and the drive shaft seat is provided with a drive waist hole, a drive round hole or a drive shaft.

[0011] As a preferred technical solution, the rotating shaft includes rotating shaft seats located on both sides of the locking member body, and the rotating shaft seats are provided with a rotating shaft, a rotating shaft hole or a rotating waist hole.

[0012] As a preferred technical solution, the pressing and locking surface is an inwardly concave arc surface, which gradually expands outward from the inside of the locking body towards the outer end face; or the pressing and locking surface is an inwardly concave inclined surface.

[0013] As a preferred technical solution, the surface of the pressing and locking surface is provided with an anti-slip structure.

[0014] Another preferred technical solution is a hot melt tool, which includes a glue gun body, and the aforementioned rotary locking member is rotatably connected to a mounting bracket inside the glue gun body.

[0015] As a preferred technical solution, the mounting bracket is provided with a rod-shaped auxiliary channel that facilitates the passage of the rod-shaped body, and the inner surface of the rod-shaped auxiliary channel is provided with an auxiliary pressing part that can contact the surface of the rubber rod.

[0016] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: Compared with the prior art of inserting the tip into the surface of the rod, the pressing and locking surface of this utility model can effectively reduce the damage to the surface of the rod and avoid the breakage of the rod. In addition, the double pressing and locking surface can achieve double-sided locking, which not only has a better locking effect on the rod and more stable glue dispensing, but also the upper and lower cooperation can prevent the rod from deforming, being damaged or breaking. Users no longer need to worry about excessive pressure causing damage to the rod. At the same time, the two-point cooperation can also lock rods of different diameters, which is suitable for rods of different specifications and maintains the angle of the rod, optimizes the accuracy of its glue dispensing axis, and avoids jamming and slippage caused by the glue stick being too large or too small. Attached Figure Description

[0017] The accompanying drawings are intended only to illustrate and explain the present invention and do not limit the scope of the present invention.

[0018] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention;

[0019] Figure 2This is a structural cross-sectional view of Embodiment 1 of this utility model;

[0020] Figure 3 This is the structural principle of the released state in Embodiment 1 of this utility model. Figure 1 (The drive shaft is located on the upper part of the locking body).

[0021] Figure 4 The structural principle of the locked state in Embodiment 1 of this utility model Figure 1 (The drive shaft is located on the upper part of the locking body).

[0022] Figure 5 This is the structural principle of the released state in Embodiment 1 of this utility model. Figure 2 (The drive shaft is located at the lower part of the locking body).

[0023] Figure 6 The structural principle of the locked state in Embodiment 1 of this utility model Figure 2 (The drive shaft is located at the lower part of the locking body).

[0024] Figure 7 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0025] Figure 8 This is a structural cross-sectional view of Embodiment 2 of this utility model;

[0026] Figure 9 This is a structural schematic diagram of Embodiment 3 of this utility model;

[0027] Figure 10 This is an installation diagram of Embodiment 5 of this utility model;

[0028] Figure 11 This is a structural schematic diagram of the fifth embodiment of the present invention in the released state;

[0029] Figure 12 This is a structural schematic diagram of the locked state of Embodiment 5 of this utility model;

[0030] In the figure: 10-rotary locking component; 11-locking component body; 12-rod channel; 13-rotary shaft; 13a-rotary shaft hole; 14-pressing locking surface; 15-drive shaft; 15a-drive waist hole; 15b-drive round hole; 20-mounting bracket; 20a-rod auxiliary channel; 20b-auxiliary pressing part; 30-rod-shaped body. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0032] Example 1:

[0033] like Figure 1 and Figure 2 As shown, the rotating locking member 10, used to lock the rod-shaped body 30, includes a locking member body 11. The locking member body 11 has a rod-shaped channel 12 with an opening larger than the cross-sectional size of the rod-shaped body 30. The locking member body 11 has rotating shaft portions 13 on both sides of the rod-shaped channel 12. The inner surface of the rod-shaped channel 12 has two pressing locking surfaces 14 that adapt to the surface of the rod-shaped body 30 and lock it simultaneously when tilted. When the locking member body 11 is vertical, the rod-shaped body 30 can enter the rod-shaped channel 12. When the locking member body 11 rotates and tilts around the rotating shaft portion 13, the two pressing locking surfaces 14 simultaneously press against the surface of the rod-shaped body 30, locking the rod-shaped body 30. This embodiment uses this method of pressing the rod-shaped body 30 surface with pressing locking surfaces 14, which, compared to the prior art of inserting a tip into the surface of the rod-shaped body 30, can effectively reduce damage to the surface of the rod-shaped body and avoid breakage.

[0034] In this embodiment, the rod-shaped body 30 is a cylindrical glue rod commonly used in the prior art. Of course, it can also be a non-cylindrical glue rod, such as a square glue rod specially made according to customer needs. Therefore, the rod channel 12 can be an annular channel adapted to the cylindrical glue rod, or it can be a square channel adapted to the square glue rod. Of course, the glue rod channel can also be a non-closed groove channel, as long as it ensures that the rod-shaped body 30 can be sleeved inside the locking member body 11 and can be locked by the pressing and locking surface 14.

[0035] The rod channel 12 is larger than the outer dimensions of the rod 30, ensuring that the rod 30 can be freely inserted. The two pressing and locking surfaces 14 are staggered. When the two pressing and locking surfaces 14 press the rod 30 simultaneously, they can guide and align the rod 30, ensuring that the glue dispensing position of the rod 30 is accurate.

[0036] To ensure the locking effect of the rotating locking member 10, a pressing locking surface 14 is provided on the inner surface of the rod channel 12. The pressing locking surface 14 is an arc-shaped surface adapted to the surface of the rod 30. The rod 30 is locked by friction contact between the pressing locking surface 14 and the surface of the rod 30.

[0037] To further ensure the locking effect of the two pressing and locking surfaces 14, the rotation axis of the rotating shaft 13 is perpendicular to the axis of the rod channel 12. This ensures that the two pressing and locking surfaces 14 simultaneously press the surface of the rod 30.

[0038] See Figure 2 The clamping and locking surface 14 has two parts, one of which is located at the top of the rod channel 12 and at the front end of the locking body 11, and the other is located at the bottom of the rod channel 12 and at the rear end of the locking body 11. Alternatively, one part can be located at the top of the rod channel 12 and at the rear end of the locking body 11, and the other part can be located at the bottom of the rod channel 12 and at the front end of the locking body 11. With a pressing and locking surface 14 on the upper and lower surfaces of the rod 30, double-sided locking can be achieved. This not only improves the locking effect of the rod 30 and makes the glue dispensing more stable, but also prevents the rod 30 from deforming, being damaged, or breaking due to the upper and lower fit. Users no longer need to worry about excessive pressure causing damage to the rod 30. When the size of the rod 30 is perfectly matched, the two pressing and locking surfaces are pressed together and make perfect contact with the surface of the rod 30, making the locking more stable. At the same time, the two-point fit can also lock rods 30 of different diameters, making it suitable for rods 30 of different specifications.

[0039] See Figure 1 and Figure 2 The locking member body 11 is located at the upper part of the rod channel 12 and has a drive shaft 15. The drive shaft 15 is connected to a drive structure that causes the rotating locking member 10 to rotate around the rotating shaft 13, allowing the rotating locking member 10 to switch positions between a vertical and an inclined state. Alternatively, the drive shaft 15 can also be located at the lower part of the rod channel 12, see [reference needed]. Figure 5 and Figure 6 As long as the drive shaft 15 can rotate the rotary locking member 10 when it is in motion, the pressing locking surface 14 can lock the surface of the rod-shaped body 30.

[0040] See Figure 1 and Figure 2The drive shaft portion 15 includes a drive shaft seat located on the upper or lower part of the locking member body 11. The drive shaft seat is provided with a drive waist hole 15a. A pin is provided in the drive waist hole 15a. The pin can slide and rotate along the drive waist hole 15a. When the pin moves, it can push the locking member body 11 to rotate around the rotating shaft portion 13 through the drive waist hole 15a.

[0041] See Figure 1 The rotating shaft portion 13 includes rotating shaft seats located on both sides of the locking member body 11. Each rotating shaft seat has a rotating shaft hole 13a, which is a round hole. The rotating shaft is installed via a pin, enabling the locking and unlocking of the locking member body 11 through rotation. Alternatively, a rotating shaft can be directly connected to the rotating shaft seat for rotational installation.

[0042] See Figure 2 The pressing and locking surface 14 is an inwardly concave arc surface, which gradually expands outward from the inside of the locking body 11 toward the outer end face. When the rod-shaped body 30 is a cylindrical rubber rod, the pressing and locking surface 14 is an arc surface that can fit the outer circumferential surface of the cylindrical rubber rod. When the rod-shaped body 30 is a square rubber rod, the pressing and locking surface 14 is an inwardly concave inclined surface that can fit the outer plane of the square rubber rod.

[0043] In order to increase the friction of the pressing and locking surface 14, the surface of the pressing and locking surface 14 is provided with an anti-slip structure, which is a friction texture or friction strip, etc., to increase the friction.

[0044] The working principle of this embodiment is as follows:

[0045] The drive shaft 15 is connected to a drive structure that causes the rotating locking member 10 to rotate around the rotating shaft 13. When the mechanism is subjected to force, the drive shaft drives the rotating locking member 10 to rotate, so that the rotating locking member 10 can switch positions between a vertical state and an inclined state.

[0046] When the rotary locking member 10 is in the vertical state (initial position) (see...) Figure 3 The rod channel 12 has its largest opening (directly opposite the glue stick hole at the tail end of the hot melt glue gun), and the rod-shaped body 30 can be freely inserted into the rod channel 12. When the rotating locking member 10 is tilted and rotated (see...), Figure 4 As the inclined opening of the rod channel 12 decreases, the two pressing and locking surfaces 14 gradually contact and clamp the surface of the rod 30, thereby locking the rod 30. At this time, the rotating locking member 10 can push the rod 30 to deliver glue. When the rotating locking member 10 returns from the inclined rotation to the vertical state (see...), Figure 3Release the rod-shaped body 30. At this time, the rotating locking member 10 can slide relative to the rod-shaped body 30 to return to the initial position, accurately feeding the next rod-shaped body 30 with glue.

[0047] In summary, the pressing and locking surfaces 14 have a smaller compression angle and appear in pairs, which can effectively reduce the local stress on the glue stick. The two pressing and locking surfaces 14 effectively divide the pressure, and with the double sliding anti-slip texture on them, the glue stick can be clamped and stabilized more effectively.

[0048] The arc surface of the clamping and locking surface 14 can also prevent the rubber rod from being cut when clamped.

[0049] Example 2:

[0050] This embodiment is basically the same in structure as Embodiment 1, with the main difference being the structure of the drive shaft portion 15. In this embodiment, the drive shaft hole is a drive circular hole 15b, where a pin can be installed. The rotation locking member 10 can also be rotated via the drive structure. Of course, a drive shaft can be directly installed on the drive shaft seat, and the drive shaft can be connected to the drive structure, which can also cause the rotation locking member 10 to rotate.

[0051] Example 3:

[0052] This embodiment is basically the same in structure as Embodiment 1, the main difference being the structure of the rotating shaft 13. (See also...) Figure 9 In this embodiment, the rotating shaft hole 13a is a rotating waist hole, where a pin can be installed, and the rotating locking member 10 can also be rotated by a driving structure.

[0053] Example 4:

[0054] This embodiment is basically the same as the first embodiment in terms of structure. The main difference is that the number and position of the pressing and locking surfaces 14 are different. In this embodiment, there is one pressing and locking surface 14, which is located at the top of the rod channel 12 and at the front end of the locking body 11. When the rotating locking component 10 rotates, the pressing and locking surface 14 is in contact with the surface of the rod 30, and the movement of the rod is restricted to achieve the purpose of locking.

[0055] Of course, the pressing and locking surface 14 may be located at the bottom end of the rod channel 12 and at the front end of the locking body 11; or the pressing and locking surface 14 may be located at the top end of the rod channel 12 and at the rear end of the locking body 11; or the pressing and locking surface 14 may be located at the bottom end of the rod channel 12 and at the rear end of the locking body 11.

[0056] Embodiment 5:

[0057] See Figure 10 The hot melt tool includes a glue gun body, and the aforementioned rotary locking member 10 is rotatably connected to the mounting bracket 20 inside the glue gun body. In use, after the rod-shaped body 30 is locked by the rotary locking member 10, the mechanism can drive the rotary locking member 10 and the rod-shaped body 30 to move forward as a whole to deliver glue or to move backward as a whole to return to the original position via the mounting bracket 20.

[0058] In this embodiment, the hot melt tool can be a hot melt glue gun, but it is not limited to a hot melt glue gun; it can also be a hot melt glue pen or other hot melt tools.

[0059] To further improve the locking effect of the rod-shaped body 30, an auxiliary channel 20a is provided on the mounting bracket 20. The inner surface of the auxiliary channel 20a is provided with an auxiliary pressing part 20b that fits against the surface of the rod-shaped body 30. The auxiliary pressing part 20b is an arc-shaped surface adapted to the surface of the rod-shaped body 30. See [reference needed]. Figure 11 and Figure 12 The auxiliary clamping part 20b acts as a clamping point, cooperating with the upper and lower clamping locking surfaces 14 to form a three-point (three arc-shaped surfaces) clamping, which will help to stabilize the clamping of the rod-shaped body 30.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary locking element for locking a rod-shaped body, characterized in that: The device includes a locking body, which has a rod channel with an opening larger than the cross-sectional size of the rod. The locking body has rotating shafts on both sides of the rod channel. The inner surface of the rod channel has a pressing and locking surface that is adapted to the surface of the rod for locking in an inclined state.

2. The rotary locking member as described in claim 1, characterized in that: The axis of rotation of the rotating shaft is perpendicular to the axis of the rod channel.

3. The rotary locking member as described in claim 1, characterized in that: The clamping and locking surfaces are provided in two places, located at the top and bottom of the rod channel, respectively, and the two clamping and locking surfaces are staggered and located at the front and rear ends of the locking body. Alternatively, a clamping and locking surface may be provided, located at the top or bottom of the rod channel, and at the front or rear end of the locking body.

4. The rotary locking member as described in claim 1, characterized in that: The locking component body is located at the upper or lower part of the rod channel and has a drive shaft.

5. The rotary locking member as described in claim 4, characterized in that: The drive shaft portion includes a drive shaft seat located on the upper or lower part of the locking member body, and the drive shaft seat is provided with a drive waist hole, a drive round hole, or a drive shaft.

6. The rotary locking member as described in claim 1, characterized in that: The rotating shaft portion includes rotating shaft seats located on both sides of the locking member body, and the rotating shaft seats are provided with a rotating shaft, a rotating shaft hole, or a rotating waist hole.

7. The rotary locking member as described in claim 1, characterized in that: The pressing and locking surface is an inwardly concave arc surface, which gradually expands outward from the inside of the locking body towards the outer end face; or the pressing and locking surface is an inwardly concave inclined surface.

8. The rotary locking member as described in claim 1, characterized in that: The surface of the pressing and locking surface is provided with an anti-slip structure.

9. A hot melt tool, including a glue gun body, characterized in that: The mounting bracket inside the glue gun body is rotatably connected to a rotary locking member as described in any one of claims 1 to 8.

10. The hot melt tool as described in claim 9, characterized in that: The mounting bracket is provided with a rod-shaped auxiliary channel to facilitate the passage of the rod-shaped body, and the inner surface of the rod-shaped auxiliary channel is provided with an auxiliary pressing part that can contact the surface of the rubber rod.

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