Structure of the extension rod of the quick release tool

Abstract

Provide a structure of an extension rod of a quick release tool that can be firmly and quickly locked. 【Solution means】A structure of an extension rod of a quick release tool including an extension rod, a slide sleeve, and a quick release unit. The extension rod has a rod body, a connection part, and a stop edge. A first alignment ball is fitted into the connection part, a storage hole is recessed, and a spring and an alignment pin are stored therein. The slide sleeve has a first end, a second end, a pilot orifice, an insertion groove, a guide surface, and a reduced diameter part. A through hole is provided in the reduced diameter part, and the through hole stores a second alignment ball. The quick release unit consists of a connection rim, an elastic part, a fastener, and a body part. The body part has an opening at the first end and an opening at the second end smaller than the opening at the first end. The opening at the second end is connected to the body part through an inclined surface part.

Description

Technical Field

[0001] The present invention relates to a structure of an extension rod of a quick release tool, and more particularly to a structure of an extension rod of a quick release tool that can be freely joined to a socket head or a driver head.

Background Art

[0002] So far, the conventionally known quick release tool mainly includes an extension rod body (10), a slide sleeve (20), a spring (30), and an alignment pin (40) as disclosed in Taiwan Utility Model No. M503983. The extension rod body (10) has a circular rod body (11). By forming a plurality of cutting surfaces (12) with the same angle on the side circumference of the rod body (11), a quadrilateral connection part (13) is formed. Due to the reduction of the outer diameter of the cutting surface (12), a stop edge (104) is further formed at the junction of the rod body (11) and the connection part (13). A ball (15) for alignment is fitted in the connection part (13), and a storage hole (16) is recessed. If necessary, a magnetic body can also be embedded in the side end of the connection part (13). The slide sleeve (20) has a first end (21) and a second end (22). A quadrilateral pilot orifice (23) penetrating between the first end (21) and the second end (22) is provided. In the pilot orifice (23), an insertion groove (24) is provided circumferentially adjacent to the first end (21). The insertion groove (24) is connected to the pilot orifice (23) through a guide surface (25) in the direction of the second end (22). Cuts (26) are respectively cut into the center of each side wall of the pilot orifice (23). After sequentially putting the spring (30) and the alignment pin (40) into the storage hole (16) of the extension rod body (10), the slide sleeve (20) has the connection part (13) fitted in the pilot orifice (23). The spring (30) presses the alignment pin (40) to fit it into the insertion groove (24), or only limited sliding movement of the slide sleeve (20) along the extension rod body (10) is performed by the mutual contact between the first end (21) and the stop edge (14).

[0003] When in use, when the slide sleeve (20) is pushed backward, the connecting portion (13) protrudes forward from the pilot orifice (23), and is used to connect with the socket head (50) through the protruding connecting portion (13). When the slide sleeve (20) is pushed backward, its first end (21) and the stop edge (14) abut against each other, so that the slide sleeve (20) can be reliably stopped and prevented from falling off. On the other hand, when the slide sleeve (20) is pushed forward, since the connecting portion (13) is completely inside the pilot orifice (23), a space is formed for inserting the driver head (60) into the pilot orifice (23). When the slide sleeve (20) is pushed forward, due to the tension of the spring (30), the alignment pin (40) is automatically locked in the insertion groove (24), and the position of the maximum stroke of the sliding movement of the slide sleeve (20) is limited.

[0004] However, the above conventional structure still has the following problems in actual application: When the slide sleeve (20) is pushed and moved forward, a space for inserting the driver head (60) into the pilot orifice (23) is formed. However, when simply inserted in such a way, when the slide sleeve (20) is moved backward, the driver head (60) is immediately pushed out of the pilot orifice (23) by the extension rod body (10), so it is necessary to pick up the driver head (60) again, and there is also a risk of further loss, and there is still inconvenience in use.

[0005] Therefore, how to research, develop and improve in response to the above-mentioned disadvantages of the conventional quick-release tool is the research and development goal of the industry. The inventor has come up with an idea for the invention, designed with years of experience, and after many considerations, sample tests and several modifications and improvements, this creation has been made.

Summary of the Invention

Problems to be Solved by the Invention

[0006] When a conventional driver head is once inserted and the slide sleeve is displaced rearward, it is immediately pushed out from the pilot orifice by the extension rod body, which is a technical problem to be solved.

Means for Solving the Problem

[0007] The present invention provides a structure of an extension rod of a quick release tool including an extension rod, a slide sleeve, and a quick release unit. Among them, the extension rod has a circular rod body. By forming a plurality of cutting surfaces at the same angle on the side circumference of the rod body, a quadrilateral connecting portion is formed. Due to the reduction of the outer diameter of the cutting surface, a stop edge is further formed at the boundary between the rod body and the connecting portion. Also, a first alignment ball is fitted and provided in the connecting portion, and a storage hole is recessed. The storage hole is provided for storing a spring and an alignment pin in sequence. The slide sleeve has a first end and a second end. A quadrilateral pilot orifice is provided between the first end and the second end. In the pilot orifice, a plug groove is provided to circle the circumference adjacent to the first end. The plug groove is connected to the pilot orifice through a guide surface in the direction of the second end. Cuts are provided at the centers of at least two opposite sides of the pilot orifice. The slide sleeve is fitted with the connecting portion in the pilot orifice. The spring presses the alignment pin and fits it into the plug groove, or the slide sleeve is restricted to slide only along the extension rod by the mutual contact between the first end and the stop edge. Also, a reduced diameter portion is provided on the outer circumference where the slide sleeve is farthest from the first end. At least one through hole is provided in the reduced diameter portion. The through hole communicates with the pilot orifice and is provided for storing a second alignment ball. The quick release unit is composed of a connection rim, an elastic part, a fastener, and a body portion. The connection rim and the elastic part are sequentially fitted into the reduced diameter portion of the slide sleeve. The reduced diameter portion is used by the fastener to buckle, preventing the elastic part and the fastener from being removed, and enabling the elastic part to be supported between the connection rim and the fastener. The body portion has an opening at the first end and an opening at the second end. The opening at the second end is smaller than the opening at the first end.The opening at the second end is connected to the body through the inclined surface portion. When the body covers the fastener, the elastic part, and the connection rim in the reduced-diameter portion, a tight fit that can be firmly connected to each other is formed between the opening at the first end and the connection rim. After moving and displacing the connection rim through the body or releasing it, it is rebounded by the elastic part again. Therefore, the jumping out or sinking of the second alignment ball can be controlled at the inclined surface portion, thereby obtaining the structure of the extension rod of the quick-release tool.

Advantages of the Invention

[0008] The present invention provides a structure of an extension rod of a quick-release tool. When the driver head is inserted into the pilot orifice using the quick-release unit, the driver head is firmly locked, the slide sleeve is not pushed further backward, and the connection part cannot extend out of the pilot orifice accordingly. With this quick locking method, needless to say, the driver head will not be immediately pushed out of the pilot orifice by the extension rod, and there is no need to pick it up again or the risk of loss. Therefore, the structure of the extension rod of the quick-release tool of the present invention is made more convenient in use.

Brief Description of the Drawings

[0009]

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BEST MODE FOR CARRYING OUT THE INVENTION

[0010] In order to better understand and recognize the object, features, and effects of the present invention, the following will be described in detail by taking the embodiments of the drawings in the brief description of the drawings as examples.

[0011] First, as shown in FIGS. 1 to 3, an extension rod (10), a slide sleeve (20), and a quick release unit (30) are included. The extension rod (10) has a circular rod body (101). By forming a plurality of cutting surfaces (102) with the same angle on the side circumference of the rod body (101), a quadrilateral connection portion (103) is formed. Due to the reduction of the outer diameter of the cutting surface (102), a stop edge (104) is further formed at the boundary between the rod body (101) and the connection portion (103). A first alignment ball (11) is fitted and provided in the connection portion (103), and a storage hole (105) is recessed and provided. The storage hole (105) is provided for the spring (12) and the alignment pin (13) to be sequentially stored therein. The slide sleeve (20) has a first end (201) and a second end (202). A quadrilateral pilot orifice (203) is provided between the first end (201) and the second end (202). In the pilot orifice (203), an insertion groove (204) is provided so as to go around the circumference adjacent to the first end (201). The insertion groove (204) is connected to the pilot orifice (203) through a guide surface (205) in the direction of the second end (202). Cuts (206) are provided at the centers of at least two opposite sides of the pilot orifice (203). The slide sleeve (20) has the connection portion (103) fitted in the pilot orifice (203), and the spring (12) presses the alignment pin (13) to fit it into the insertion groove (204), or the slide sleeve (20) is restricted to only slide along the extension rod (10) by the mutual contact between the first end (201) and the stop edge (104). A reduced diameter portion (207) is provided on the outer circumference where the slide sleeve (20) is farthest from the first end (201). At least one through hole (208) is provided in the reduced diameter portion (207). The through hole (208) communicates with the pilot orifice (203) and is provided for storing a second alignment ball (21). The quick release unit (30) has a connection rim (31),It consists of an elastic part (32), a stop fitting (33), and a body part (34). The connection rim (31) and the elastic part (32) are sequentially fitted into the reduced-diameter part (207) of the slide sleeve (20). Using the stop fitting (33) to buckle the reduced-diameter part (207), it can prevent the elastic part (32) and the stop fitting (33) from being removed, and can support the elastic part (32) between the connection rim (31) and the stop fitting (33). The body part (34) has an opening (341) at the first end and an opening (342) at the second end. The opening (342) at the second end is smaller than the opening (341) at the first end. The opening (342) at the second end is connected to the body part (34) through an inclined surface part (343). When the body part (34) covers the stop fitting (33), the elastic part (32), and the connection rim (31) at the reduced-diameter part (207), due to the tight fit that can be firmly connected to each other between the opening (341) at the first end and the connection rim (31), the connection rim (31) can be moved and displaced through the body part (34), or after being released, it can be bounced back by the elastic part (32). Therefore, the inclined surface part (343) can control the bouncing out or sinking of the second alignment ball (21).

[0012] The present invention provides a structure of an extension rod of a quick-release tool. The rod body (101) has a hexagonal joint part (106) at the other end different from the connection part (103), and a fitting groove (107) is further provided in the joint part (106). The extension rod (10) can be used to connect with an electric tool or a pneumatic tool through the joint part (106) and the fitting groove (107).

[0013] The present invention provides a structure of an extension rod of a quick-release tool. The alignment pin (13) is a cap, and one end of the spring (12) can be fitted into the alignment pin (13) and stopped inside.

[0014] The present invention provides a structure of an extension rod of a quick release tool, a tooth-shaped pattern (311) is formed on the connection rim (31), and the connection rim (31) can be more securely engaged with the body portion (34) through the tooth-shaped pattern (311).

[0015] The present invention provides a structure of an extension rod of a quick release tool, and the fastener (33) is a C-shaped buckle.

[0016] The present invention provides a structure of an extension rod of a quick release tool, and the body portion (34) is firmly fixed directly to the connection rim (31) through the opening (341) at the first end.

[0017] The present invention provides a structure of an extension rod of a quick release tool, and an annular coil (35) is further fitted between the connection rim (31) and the elastic part (32).

[0018] When actually using it, the barrel portion (34) is temporarily moved out of the pilot orifice (203) by moving forward so that the second alignment ball (21) does not receive the locking of the inclined surface portion (343). When the barrel portion (34) can be moved forward, the slide sleeve (20) is also moved forward together, and the connecting portion (103) is completely inside the pilot orifice (203). Thus, a space can be formed for inserting various driver heads (40) into the pilot orifice (203) (as shown in FIG. 4). When the driver head (40) is inserted into the pilot orifice (203) and the hand holding the barrel portion (34) is released, the barrel portion (34) returns to its original position by the rebound of the elastic part (32), and again the second alignment ball (21) receives the locking of the inclined surface portion (343). The driver head (40) is firmly locked in the pilot orifice (203) by the second alignment ball (21) inward (as shown in FIG. 5). Thus, the slide sleeve (20) can no longer be pushed further backward, and the connecting portion (103) can no longer protrude from the pilot orifice (203). Needless to say, there is no risk that the driver head (40) will be immediately pushed out of the pilot orifice (203). Also, when the slide sleeve (20) is moved forward, the alignment pin (13) is automatically locked in the insertion groove (204) under the elastic force of the spring (12), and the position of the maximum stroke of the sliding movement of the slide sleeve (20) is limited.

[0019] On one hand, when the driver head (40) is removed by pushing the body portion (34) forward, the connection portion (103) can be protruded forward from the pilot orifice (203) by pushing the slide sleeve (20) backward again. Thus, the protruding connection portion (103) can be used to connect with the socket head (50) (as shown in FIGS. 6 to 8). When the slide sleeve (20) is pushed backward, the first end (201) of the slide sleeve (20) and the stop edge (104) abut against each other, so that the slide sleeve (20) can be firmly stopped and prevented from falling off.

[0020] With the structure of the above specific embodiment, the following effects can be obtained: When the driver head (40) is inserted into the pilot orifice (203) using the quick release unit (30), the driver head (40) is firmly locked, the slide sleeve (20) is not pushed further backward, and the connection portion (103) cannot correspondingly extend out of the pilot orifice (203). With this quick locking method, needless to say, the situation where the driver head (40) is immediately pushed out of the pilot orifice (203) by the extension rod (10), or the need to pick it up again or the risk of loss is eliminated. The structure of the extension rod of the quick release tool of the present invention is made more convenient in use.

[0021] The above is only one embodiment of the present invention and does not limit the scope of implementation of the present invention. That is, changes, modifications, etc. made within the scope of the claims of this utility model registration should also belong to the scope of the present invention.

Explanation of Reference Numerals

[0022] 10 Extension rod 101 Rod body 102 Cutting surface 103 Connection portion 104 Stop edge 105 Storage hole 106 Joint part 107 Insertion groove 11 First alignment ball 12 Spring 13 Alignment pin 20 Slide sleeve 201 First end 202 Second end 203 Pilot orifice 204 Insertion groove 205 Guide surface 206 Notch 207 Reduced diameter part 208 Through hole 21 Second alignment ball 30 Quick release unit 31 Connection rim 311 Tooth pattern 32 Elastic part 33 Stop fitting 34 Barrel part 341 Opening at the first end 342 Opening at the second end 343 Inclined surface part 35 Annular coil 40 Driver head 50 Socket head

Claims

1. The structure of an extension rod of a quick-release tool including an extension rod, a slide sleeve, and a quick-release unit, wherein the extension rod has a rod body, and a quadrilateral connection portion is formed by forming a plurality of cutting surfaces at the same angle on the side circumference of the rod body. By reducing the outer diameter of the cutting surface, a stop edge is further formed at the boundary between the rod body and the connection portion. A first alignment ball is fitted into the connection portion, and a storage hole is recessed. The storage hole is provided for sequentially storing a spring and an alignment pin therein, the slide sleeve has a first end and a second end, and a quadrilateral pilot orifice is provided between the first end and the second end. A plug groove is provided in a circumferential manner adjacent to the first end in the pilot orifice. The plug groove is connected to the pilot orifice through a guide surface in the direction of the second end. Cuts are provided at the centers of at least two opposite sides of the pilot orifice. The slide sleeve is fitted with the connection portion in the pilot orifice, and the spring presses the alignment pin to fit it into the plug groove, or the slide sleeve is restricted to only slide along the extension rod by the mutual contact between the first end and the stop edge. A reduced-diameter portion is provided on the outer circumference of the slide sleeve farthest from the first end, and at least one through hole is provided in the reduced-diameter portion. The through hole communicates with the pilot orifice and is provided for storing a second alignment ball, The quick release unit described above consists of a connection rim, an elastic part, a fastener, and a body part. The connection rim and the elastic part are sequentially fitted into the reduced diameter part of the slide sleeve. By using the fact that the fastener buckles at the reduced diameter part, the removal of the elastic part and the fastener is prevented, and the elastic part can be supported between the connection rim and the fastener. The body part has an opening at the first end and an opening at the second end. The opening at the second end is smaller than the opening at the first end. The opening at the second end is connected to the body part through an inclined surface part. When the body part covers the fastener, the elastic part, and the connection rim at the reduced diameter part, a tight fit that can be firmly connected to each other is formed between the opening at the first end and the connection rim. By moving and displacing the connection rim through the body part, or after being released, it is bounced back by the elastic part again. Therefore, the extension rod structure of the quick release tool is characterized in that the popping out or sinking of the second alignment ball can be controlled at the inclined surface part.

2. The rod body has a hexagonal joint part at the other end different from the connection part, and a fitting groove is further provided in the joint part. The structure of the extension rod of the quick release tool according to Claim 1 is characterized in that.

3. The alignment pin is a cap, and one end of the spring can be fitted into the alignment pin and stopped inside. The structure of the extension rod of the quick release tool according to Claim 1 is characterized in that.

4. A tooth-shaped pattern is formed on the connection rim. The structure of the extension rod of the quick release tool according to Claim 1 is characterized in that.

5. The fastener is a C-shaped buckle. The structure of the extension rod of the quick release tool according to Claim 1 is characterized in that.

6. An annular coil is further fitted between the connection rim and the elastic part. The structure of the extension rod of the quick release tool according to Claim 1 is characterized in that.

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